RU2665566C2 - Method for determining cyclic fuel supply and device for implementation thereof - Google Patents

Abstract

FIELD: engine building.SUBSTANCE: invention can be used to determine the cyclic fuel supply of a high-pressure fuel pump (HPFP) in a diesel engine. Method for determining the cyclic fuel supply in a diesel engine is that in the regime of free acceleration and stationary mode of the engine, the cyclic fuel supply through the injection pump sections is determined by the phase shift between the pulses, characterizing the movement of the high-pressure fuel-line casing at the injection pump outlet and in front of the injector at the engine speed of the crankshaft, differing by not more than 1% of the preset. Device for carrying out the method is provided with reference frequency determiner 3 connected in series, electronic key 4, correlation meter 1, cyclic fuel supply determiner 2 in the fuel pump and engine sections and setpoint generator 5, connected to the second input of cyclic fuel supply determiner 2 along the fuel pump and engine sections.EFFECT: technical result is the simplification and reduction of the labor intensity of the measurement due to the absence of assortment-assembly operations.8 cl, 7 dwg

Description

The invention relates to a technique for diagnosing diesel internal combustion engines (ICE) and can be used to determine the cyclic supply of fuel in the engine with a high pressure fuel pump (TNVD) both when testing the engine and when checking its technical condition, including operating conditions.

The cyclic supply of g _c fuel is one of the important parameters characterizing the technical condition of the diesel engine, in particular the state of the injection pump. The output of this parameter beyond the permissible values leads to deterioration of the engine, coking of parts of the cylinder-piston group, a decrease in diesel power, an increase in specific fuel consumption. Therefore, the measurement of cyclic fuel supply is extremely important, both during operation and in the repair of a diesel engine.

A known method for determining the cyclic fuel supply in a diesel engine by the phase shift between the beginning of the pulse of increasing fuel pressure in the plunger space of the fuel pump of the engine and the beginning of the pulse of increasing fuel pressure in the head of the fuel pump / 1 /. In the known method, the cyclic feed is measured at certain (starting) constant revolutions of the diesel crankshaft.

The disadvantage of this method is the need to maintain a constant speed of the crankshaft, and so that the fuel injection pump regulator keeps the fuel rail in constant cyclic flow, i.e. it is necessary to create a stable mode of diesel operation, otherwise, with a change in the frequency of rotation of the crankshaft of the diesel engine, the fuel injection pump regulator, acting on the specified rail, changes the cyclic fuel supply. In order to measure the cyclic fuel supply at a constant engine speed, it is necessary to use additional means to stabilize this speed. This is feasible under certain stationary conditions, for example, when installing a diesel engine or a machine with the diesel engine used on it on an appropriate stand with a brake device for loading the diesel engine, which is associated with labor-intensive operations. Therefore, the known method is not applicable for the operational determination of the cyclic fuel supply in operating conditions. In addition, during operation, the diesel engine runs at a starting speed for short periods of time, therefore, the cyclic fuel supply measured at this speed will not be characterized accurately enough.

A device for determining the cyclic supply of fuel in a diesel engine by the phase shift between the beginning of the pulse of increasing the pressure of the fuel in the plunger space of the fuel pump of the engine and the beginning of the pulse of increasing the pressure of the fuel in the head of the fuel pump / 1 /, containing series-connected pressure sensors, amplifiers and a light oscilloscope or instead of the latter, a disk with an angular graduation rigidly connected to the engine crankshaft and a momentoscope.

A disadvantage of the known device is the low efficiency, accuracy and reliability of determining the cyclic fuel supply in operating conditions, and, therefore, the technical condition of the engine.

A known method for determining the cyclic fuel supply in a diesel engine / 2 /, selected by the prototype of the proposed method, which consists in the fact that the phase shift between the beginning of the pulse of increasing fuel pressure in the plunger space of the fuel pump of the engine and the beginning of the pulse of increasing fuel pressure in the head of the fuel pump free acceleration of the engine at a speed of its crankshaft that differs by no more than 1% from the nominal value of the rotational speed, and the free-running mode rooting is created by initially ensuring engine operation at a minimum stable idle speed and subsequent sharp movement of the control element of the engine speed control to the position corresponding to the maximum fuel supply; moreover, the indicated phase shift is determined no earlier than 0.8 s after the specified governing body reaches the position corresponding to the maximum fuel supply, and no later than the moment of operation of the specified regulator to reduce the fuel supply; moreover, the specified phase shift is determined no later than the moment of interruption of the contact of the main lever of the specified controller with the head of the bolt of the installation of the specified nominal speed.

The disadvantage of this method is the complexity of its application in operating conditions and the high complexity caused by the need for assembly and disassembly to install pressure sensors in the high pressure fuel pump and screw contact. In addition, with its help it is impossible to determine the cyclic fuel supply in the sections of the injection pump.

A device for determining the cyclic supply of fuel in a diesel engine by the phase shift between the beginning of the pulse of increasing the pressure of the fuel in the plunger space of the fuel pump of the engine and the beginning of the pulse of increasing the pressure of the fuel in the head of the fuel pump / 2 /, containing series-connected pressure sensors, amplifiers and a light-beam oscilloscope, delay circuits and blocking (prohibition) of pressure sensor readings, screw contact, and the input of the delay circuit for measuring sensor readings The phenomena are connected by the first electric wire with a screw contact, which is in contact with the control element of the engine speed regulator when the latter is in the maximum fuel supply position, the input of the blocking (prohibition) circuit is connected by the second electric wire with the bolt head, the axial arrangement of which and the speed controller the crankshaft are adjusted so that the interruption of the contact of the main lever of the crankshaft speed regulator with the bolt runs when the rated speed of the engine crankshaft, the outputs of the delay circuits and blocking (barring) the measurement readings of pressure sensors connected to the signal input of a light beam of an oscilloscope.

A disadvantage of the known device is the difficulty of its use in operating conditions, due to the need for assembly and disassembly to install pressure sensors in the high pressure fuel pump, a screw contact and the corresponding connections with the circuits of this contact and a bolt in contact with the main lever of the crankshaft speed controller. In addition, with its help it is impossible to determine the cyclic fuel supply by sections of the injection pump, as well as the cyclic fuel supply at various speeds of the crankshaft, the values of which are used to diagnose the fuel system.

The objective of the proposed technical solution is to simplify, reduce the complexity, expand the diagnostic capabilities while ensuring a sufficiently accurate and quick determination of the cyclic fuel supply in a diesel engine, including the sections of the high-pressure fuel pump in operating conditions, which improves the accuracy and reliability of assessing the technical condition of the fuel engine systems.

The problem in the method is solved in that in the mode of free acceleration of the engine determine the cyclic supply of fuel in a diesel engine by determining it in sections of the fuel pump by the phase shift between pulses characterizing the movement of the high pressure fuel pipe body of known length and cross section at the exit of the fuel pump and before nozzle, and the phase shift is determined by the maxima of the mutual correlation function or by the slope of the phase-frequency characteristic of the mutual energy spectrum of the indicated pulses, or at the moment of crossing through zero from the positive to negative values of the mutual correlation function of the pulse at the fuel pump output and the pulse velocity of the fuel line before the nozzle obtained over many cycles, followed by the summation of the cycle fuel supply over all sections of the fuel pump at a speed the crankshaft of the engine, which differs by no more than 1% from the specified, including nominal, speed value.

In the free acceleration mode of the engine, the cyclic fuel supply in the diesel engine is determined by determining it by the sections of the fuel pump by the phase shift between pulses characterizing the movement of the housings adjacent to the flash distribution diagrams along the cylinders of the high pressure fuel lines of known length and cross section at the fuel pump exits or in front of the nozzles moreover, the phase shift is determined by the maxima of the mutual correlation function or by the slope of the phase-frequency characteristic of the mutual the energy spectrum of the indicated pulses, or at the moment of transition through zero from a positive to a negative value of the mutual correlation function of the fuel transfer pulse of the first section and the speed of the fuel transfer pulse of the section adjacent to the outbreaks of the cylinder cylinders obtained over many cycles, with a preliminary determination of the phase shift by one of these methods between pulses characterizing the movement of the cases at the end of the first and the beginning of the second adjacent diagonally mmme of the distribution of flashes along the cylinders of the high pressure fuel pipelines, followed by subtracting this shift from the phase shift between pulses characterizing the movement of the housings adjacent to the flashes of the distribution diagrams on the cylinders of the high pressure pipelines, followed by the summation of the cyclic fuel supply over all sections of the fuel pump at the engine crankshaft speed , differing by no more than 1% from the set, including the nominal, speed value.

In the stationary mode of full engine load, the cyclic fuel supply in a diesel engine is determined by determining it from the sections of the fuel pump by the phase shift between pulses characterizing the movement of the high pressure fuel pipe body of known length and cross section at the output of the fuel pump and before the nozzle, or by the phase shift between pulses characterizing the movement of the bodies adjacent to the outbreaks of the distribution diagrams of the cylinders of the high pressure fuel lines at the fuel outlets pump or in front of the nozzles, as well as with preliminary determination of the phase shift between pulses characterizing the movement of the bodies at the end of the first and the beginning of the second adjacent on the diagram of the distribution of flashes on the cylinders of the high pressure fuel lines with subsequent subtraction of this shift from the phase shift between the pulses characterizing the movement of the bodies of neighboring according to the distribution diagram of outbreaks along the cylinders of the high pressure fuel lines, followed by the summation of the cyclic fuel supply over all projection of the fuel pump at a rotational speed of the engine crankshaft that differs by no more than 1% from the specified, including nominal, value of the rotational speed, and the phase shift between these pulses is determined by the maxima of the mutual correlation function or by the slope of the phase-frequency characteristic of the mutual energy spectrum of pulses, or at the moment of transition through zero from positive to negative values of the mutual correlation function of the first of these pulses and the speed of the second Pulse displacement fuel obtained by a plurality of cycles.

In a diesel engine, the unknown cross section of the fuel line is preliminarily determined by the ratio of phase shifts between pulses characterizing the movement of the high pressure fuel pipe body at the outlet of the fuel pump and in front of the nozzle obtained by installing sensors on one side and on different sides of the high pressure fuel pipe, and the phase shifts between pulses are determined by the maximum of the mutual correlation function or by the slope of the phase-frequency characteristic of the mutual energy sp kra of these pulses, or at the moment of crossing through zero from a positive to a negative value of the mutual correlation function of the first of these pulses and the speed of the second pulse of the fuel line movement, obtained over many cycles, and the cyclic fuel supply through sections and a diesel engine is determined taking into account this cross section of the fuel line high pressure.

The task in the device is solved by the fact that it is equipped with a correlation flow meter, a determinant of the cyclic fuel supply in sections of the fuel pump and the engine as a whole, a determinant of the reference frequency, including the nominal one, of the frequency of measurement of the cyclic fuel supply, an electronic key and a constant adjuster, and the output of the correlation flow meter connected to the first input of the determinant of the cyclic fuel supply in sections of the fuel pump and the engine as a whole, the output of the determinant of the reference frequency for measuring the cyclic fuel supply with one with an electronic key, whose output is connected to the input correlation flowmeter constants a dial connected to a second input of the determinant cyclic fuel feed by sections of the fuel pump and the engine as a whole.

The correlation flow meter contains the first and second vibro-acoustic displacement sensors of the high-pressure fuel pipe body, the first and second pre-treatment devices, the first and second zero-organs, the correlometer, the mutual energy spectrum meter, the differentiator, the first two-position switch, the maximum meter, and the time-shift meter mutual correlation function, second and third switches to two positions, phase-frequency characteristic meter of mutual energy spec tra, a time-shift meter for the mutual energy spectrum, registrars of the mutual correlation function and the mutual energy spectrum, the first and second vibro-acoustic displacement sensors of the housing of the high pressure fuel line are connected to the first and second pre-treatment devices, respectively, the output of the first pre-processing device is connected to the first zero body and with the first inputs of the correlometer and meter of the mutual energy spectrum, the output of the second device A measuring device is connected to the second input of the mutual energy spectrum meter, with the input of the differentiator and through the first switch to two positions in the first position - with the second input of the correlometer, the output of the differentiator through the first switch to two positions in the second position is connected to the second input of the correlometer, the output of the first zero -organ is connected to the first input of the time-shift meter in the mutual energy spectrum, the first and second outputs of the correlometer are connected to the maximum meter and the second respectively, the outputs of which through the second switch to two positions in the first and second positions are connected to the second input of the time-shift meter according to the mutual correlation function, the first output of the mutual energy spectrum meter is connected through the phase-frequency characteristic meter of the mutual energy spectrum to the time-shift meter according to the mutual energy spectrum, the third output of the correlometer is connected to the registrar of the mutual correlation function, and the second output of the meter in of the optimum energy spectrum - with the recorder of the mutual energy spectrum, the outputs of the time shift meter for the mutual correlation function and the time shift meter for the mutual energy spectrum are connected through the third switch to two positions in the first and second positions, respectively, with the output of the correlation flow meter, the third inputs of the correlometer and the meter of mutual energy spectrum are the input of the correlation flow meter.

The determinant of the reference, including the nominal, frequency of measuring the cyclic fuel supply contains a speed sensor, a time interval converter to code, a signal register block, an average speed calculation unit, a level selector, a synchronization sensor, a corner marking origin forming unit, a synchronization unit reference marks of angle marks, counter of angle marks of a cycle, block for forming angle marks of a controlled cylinder, cylinder strobe generator, clock generator, clock master the frequency of measurement of the cyclic fuel supply, the angle gauge for the cycle, the angle gauge for the cylinder numbers, the control device, the key for the angle marks of the cylinder to be controlled, a two-position switch, and the speed sensor is connected through the two-position switch in the first position to the first signal input of the temporary converter interval in the code, the first information and second control outputs of which are connected respectively with the first information and second control inputs of the block of signal registers la, the output of which through the block for calculating the average value of the rotational speed is connected to the first input of the level selector, the synchronization sensor is connected in series through the block for generating the origin of the corner marks and the block for synchronizing the origin of the corner marks with the third input of the signal register block and the second input of the loop angle counter , the first input of which is connected to the output of the speed sensor, the first output - with the fifth control input of the signal register block, and the second output through the corner forming unit of the marks of the controlled cylinder — with a cylinder strobe generator, a clock pulse generator is connected to the second input of the time interval converter into a code, the frequency cyclic fuel feed frequency adjuster is connected to the second input of the level selector, the corner angle marker is connected to the third input of the angle mark counter, and the dial numbers of corner marks of cylinders - with the second input of the block of forming corner marks of the controlled cylinder, and the first input of the key of corner marks of the controlled cylinder is connected to the output of the counter key labels, the second input - with the output of the cylinder gate former, and the output through the switch to two positions in the second position - with the first signal input of the time interval converter to code, the control device is connected to the second control inputs of the average rotation speed calculation unit and the start synchronization unit of reference marks, as well as with the fourth control input of the signal register block, the output of the level selector is the output of the reference determinant, including the nominal frequency ia cyclic fuel supply.

- частота, Гц. На фиг. 5 представлены импульсы на выходе ПИД, полученные в начале s₁(t) и конце s₂(t)=s₁(t-τ_T) ТВД (а), взаимная корреляционная функция R_s(τ) импульсов на выходах ПИД и ее производная

(б), установка датчиков Д₁ и Д₂ (ВИП) по обе стороны ТВД (в), фазочастотная характеристика (г) взаимного энергетического спектра процессов s₁(t) и s₂(t). На фиг. 6 изображены структурные схемы устройства для измерения цикловой подачи топлива в дизельном двигателе по фазовому сдвигу между импульсами, характеризующими состояние топливоподачи (а) и корреляционного расходомера (б). На фиг. 7 изображена структурная схема определителя опорной, в том числе номинальной, частоты измерения цикловой подачи топлива.In FIG. 1, an example of a 4P (D-240L) layout engine shows the experimental dependence of the envelope of vibration pulses (voltages) coming from one of the first cylinders of a vibro-acoustic measuring transducer (VIP) installed in a high-pressure pipeline (HPT) in a stationary mode of internal combustion engine operation at a minimum idle n = 1100 min ^-1 (a) and in acceleration mode when the speed reaches n = 1700-1900 min ^-1 (b). In FIG. Figure 2 shows the timing diagrams of the signals (voltages) at the outputs of the VIP (a), peak inertial detector (b), and the leading edge pulse shaper (c). In FIG. Figure 3 shows the conversion of the detected signal at the output of the peak inertial detector (PID) approximated by a linear exponential pulse (a) to a linear pulse (b). In FIG. Figure 4 shows the normalized autocorrelation function (b) and the energy spectrum (c) of a triangular impulse (a): τ = t _{i + 1} -t _i , t⊂ [t ₁ , t ₂ , ..., t _i , ..., t _n ];

- frequency Hz. In FIG. Figure 5 shows the pulses at the PID output obtained at the beginning of s ₁ (t) and the end of s ₂ (t) = s ₁ (t-τ _T ) TVD (a), the cross-correlation function R _s (τ) of the pulses at the PID outputs and its derivative

(b) installation of sensors D ₁ and D ₂ (VIP) on both sides of the theater (c), phase-frequency characteristic (g) of the mutual energy spectrum of processes s ₁ (t) and s ₂ (t). In FIG. 6 shows structural diagrams of a device for measuring the cyclic fuel supply in a diesel engine by a phase shift between pulses characterizing the state of fuel supply (a) and the correlation flow meter (b). In FIG. 7 shows a structural diagram of a determinant of the reference, including the nominal, frequency measurement of cyclic fuel supply.

The fuel feed cycle of section g _{ts1 of the} high-pressure fuel pump can be determined by the amount of fuel flowing through the theater:

,

- длина ТВД, м; ν_T - скорость потока топлива, м/с; П_T - поперечное сечение (площадь) топливопровода, м².where g _c1 - volumetric fuel supply, m ³ / s; V _T is the volume of fuel, m ³ ;

,

- the length of the fuel assembly, m; ν _T is the fuel flow rate, m / s; P _T - the cross section (area) of the fuel pipe, m ² .

, измерив значение τ_Т, можно определить объемную подачу топлива.Therefore, with the known (unchanged for a specific brand of ICE) values of P _T and

By measuring the value of τ _T , it is possible to determine the volumetric flow of fuel.

друг от друга - у головки ТНВД и у форсунки. Сигналы этих датчиков s₁(t) и s₂(t)≈s₁(t-τ_T), представляют собой импульсные случайные процессы (фиг. 5). Текущая взаимная корреляционная функцию (ВКФ) этих процессовThe measurement of fuel consumption in sections of the fuel pump is as follows. Under operating conditions, two strain gauge or vibroacoustic transducers (sensors, sensors) are installed at a distance on a high pressure pipeline (TVD) of a certain cylinder using clamps, clips, clothespins and other clamps

from each other - at the head of the injection pump and at the nozzle. The signals of these sensors s ₁ (t) and s ₂ (t) ≈ s ₁ (t-τ _T ) are pulsed random processes (Fig. 5). The current cross-correlation function (VKF) of these processes

where M {...} is the mathematical expectation; K ₁₁ (τ) is the autocorrelation function (ACF) of the process s ₁ (t): FIG. 4, b.

The maximum value of K ₁₂ (τ) corresponds to the maximum of the shifted ACF K ₁₁ (τ-τ _T ) at τ = τ _T. Therefore, the measurement of the value of τ _T can be carried out by measuring the time (phase) shift of the maximum value of K ₁₂ (τ) relative to the time of occurrence of the process s ₁ (t) or its ACF (Fig. 4, b, Fig. 5, b).

It is established that over a certain range of ICE rotation frequencies, the pulse train s ₁ (t) is a stationary pulsed random process. Then the measured VKF (2) can be represented as:

where T is the analysis time obtained from the set of ICE cycles.

Mutual energy spectrum (mutual spectral density) of a biased process (one-way)

- энергетический спектр (спектральная плотность) процесса s₁(t).Where

is the energy spectrum (spectral density) of the process s ₁ (t).

The amplitude-frequency and phase-frequency characteristics (frequency response and phase response) of the mutual energy spectrum:

, то по наклону прямой 2πτ_T можно определить смещение τ_T (фиг. 5, г).Since the phase response is a linear function of frequency

, then the slope of the straight line 2πτ _T can be used to determine the displacement τ _T (Fig. 5d).

является комплексной величиной:Mutual energy spectrum

is a complex quantity:

The displacement τ _T is determined from dependences (6):

At low engine speeds, the steepness of the VKF change at τ> 0 can be quite small and noticeable differences from the maximum will appear only with a significant increase in the argument τ.In order to increase the accuracy and sensitivity of measuring the cyclic fuel supply of section g _Ц1 , the following should be done. It is known that the CCF of the random process s (t) and its derivative ds (t) / dt is equal to the derivative of the correlation function R _s (τ) of the process s (t):

обеспечивает более точное определение максимума (фиг. 5,б) и соответственно τ_T.и цикловой подачи топлива секции g_ц1.Therefore measurement

provides a more accurate determination of the maximum (Fig. 5, b) and, accordingly, τ _T. and the cyclic fuel supply of the section g _q1 .

Determination of the cyclic fuel supply of the fuel _assembly section g _{c1 is} carried out according to (1). The values of g _c1 obtained for all ICE sections are summed up to obtain a cyclic fuel supply of the engine as a whole

The measurement of g _c1 in sections can be carried out sequentially by _{moving the} sensors from one theater to another or at the same time when installing sensors on all the theater.

The error in measuring the cyclic feed rate in the sections of the high-pressure fuel pump will be determined by how accurately the fronts of the strain and vibration pulses are highlighted. Therefore, it is advisable to install sensors with a wider spectrum in the high-frequency region, i.e. it is preferable to use sensors in which the upper operating frequency can reach several tens of kilohertz, which include vibroacoustic primary transducers (sensors). Vibroacoustic signals corresponding to the passage of fuel into the fuel assembly and recorded by the vibroacoustic transducer are converted using a matching charge amplifier into an electric voltage having the shape of a pulse with a wide frequency spectrum, which is fed to a peak inertial detector (PID). The task of PID is to isolate the envelope of this pulse. The more accurately the PID tracks the pulse front, the more accurate is the measurement of the amplitude of the detected pulse. In addition, to improve noise immunity, it is necessary to eliminate signals from interference (from individual emissions and from distortion of vibration signals in the acceleration of the engine). Therefore, the PID charge constant is selected as low as possible, and the discharge constant is not less than the value equal to the duration of the fuel passage to the next VIP (Fig. 1, 2).

The pulses at the PID output can be approximated by the linear-exponential dependence s _LE (t) = bte ^{- a t} , where a and b are constant values (Fig. 3, a). Since the width of the spectrum of the pulse is determined by the steepness of the pulse front, i.e. its linear part, it is enough to consider instead of the impulse s _LE (t) the impulse of a symmetrical triangular shape

For this pulse, the amplitude A _m corresponds to the maximum amplitude of the linearly exponential pulse s _max (t) = (1 / a ) e ^{-1 / b} , and the pulse duration τ _c / 2 corresponds to the duration of the linear section of this pulse t _max = (1 / ab).

The amplitude-frequency and energy spectra of such a pulse (Fig. 4):

,

- частота в герцах.Where

,

- frequency in hertz.

The maximum value of the impulse (10), equal to A _{m, is} achieved at t = τ ₁ = 1 / α. When the envelope A (t) is highlighted by a peak detector, its parameters are selected so that the slope of the voltage drop across the capacitance during the discharge is always less than the slope of the pulse cutoff, therefore, when analyzing, it is sufficient to consider the effect on the PID of pulses whose front coincides with (10) until time t = τ ₁ , and the slice is a vertical line, i.e. we put τ = τ ₁ (Fig. 3, b). It is known that the relative measurement error of the envelope A (t) by the peak detector has the form:

where β _s = T _VP / T _s ; γ = t _f / T _VP ; β _p = T _VP / T _p ; T _VP - the period of the vibration pulses; T _s , T _p - time constants of the charge and discharge of the PID; t _f - the duration of the front of the vibration pulse.

For real vibration pulses taken from the theater of operation of autotractor ICEs in the range of rotation frequencies n = 1200-2100 s ^-1 , the front duration is τ ₁ ≈1 ... 2 ms; and the period before fuel is supplied to the adjacent cylinder does not exceed T = 4 ... 6 ms ;. Selecting a pulsed diode with a small output resistance (R _d <10 Ohm), placing a voltage follower with a small output resistance (R _i <10 Ohm) at the PID input and setting the discharge resistance to R = 10 kOhm and the capacitance C = 0.5 μF, we get T _s = (R _i + R _d ) C = 10 μs, T _p = RC = 5 ms. In this case, the error δ _{A is} significantly less than 1%.

The maximum value of K ₁₂ (τ) corresponds to the maximum of the shifted ACF K ₁₁ (τ-τ _T ) at τ = τ _T (1), (2).

The autocorrelation function (ACF) of the pulse (10):

K _m (τ) = K _m (-τ),

.where τ = t _{i + 1} -t _i ; A _m = (1 / a) e ^{-1 / b} ,

.

- для треугольного импульса (10).

- for a triangular impulse (10).

, затем при установке одного из датчиков с другой стороны ТВД (фиг. 5,в):

,

откудаAn unknown cross section of a theater of operations can be determined by installing both sensors first on one side of the theater:

, then when installing one of the sensors on the other side of the theater (Fig. 5, c):

,

where from

In the cross-correlation method, the value of g _c1 can be measured not only by tracking the position of the maximum of the VKF, but also by tracking any other given point of the VKF.

In the free acceleration mode of the engine, the cyclic fuel supply in the diesel engine is determined by determining it by the sections of the fuel pump g _c1 by the phase shift between pulses (1) characterizing the movement of the high pressure fuel pipe body of known length and cross section at the exit of the fuel pump and in front of the nozzle, and the phase shift is determined by the maximum of the mutual correlation function of the indicated pulses (2) ... (3), taking into account (13) obtained over many cycles, followed by the summation of the cycle feeds fuel in all sections of the fuel pump (9) when the engine reaches a crankshaft speed that differs by no more than 1% from the specified value, including the nominal one.

It is known that the reliability of measurement is higher, the more measured parameters (signs) confirm the measurement result.

To increase the reliability of measurements in the free acceleration mode of the engine, the phase shift is additionally determined by the slope of the phase-frequency characteristic of the mutual energy spectrum of the indicated pulses (4) ... (7) obtained over many cycles, followed by the summation of the cycle fuel supply for all sections of the fuel pump (9) at the engine reaches a crankshaft speed that differs by no more than 1% from the specified value, including the nominal value.

To increase the reliability of measurements in the free acceleration mode of the engine, a phase shift is additionally determined between pulses characterizing the displacement of the high-pressure fuel pipe body at the fuel pump outlet and before the nozzle at the moment of transition through zero from the positive to negative values of the mutual correlation function of the pulse at the fuel pump output and the pulse speed moving the fuel line in front of the nozzle (8), taking into account (13) obtained over many cycles, followed by summation cyclic fuel supply for all sections of the fuel pump (9) when the engine reaches a crankshaft speed that differs by no more than 1% from the specified, including nominal, speed value.

In operating conditions, for the convenience of measuring _{gc1, the} second sensor can be installed not at the end of the first pipeline, but at the beginning of the cylinder distribution adjacent to the distribution diagram. At the same time, the existing systematic measurement error τ _T can be taken into account in advance when installing one of the sensors at the end of the first theater of operations, and the second at the beginning of the cylinder distribution adjacent to the diagram and measuring the phase (time) shift between them τ _T12 . The phase shift between pulses and the cyclic fuel supply through the fuel pump sections are determined similarly to the previous methods, with the subsequent subtraction of the shift T _T12 from the phase shift τ _T between pulses characterizing the movement of the bodies of flashes adjacent to the cylinder diagrams of the high pressure fuel pipelines.

To increase the reliability of measurements, in addition to the full load stationary mode, the cyclic fuel supply in a diesel engine is determined by determining it from the sections of the fuel pump similarly to the previous methods.

If the cross section of the fuel assembly is not known, then it is preliminarily determined by the ratio of phase shifts between pulses characterizing the movement of the high pressure fuel pipe body at the outlet of the fuel pump and in front of the nozzle obtained when the sensors were installed on one side and on different sides of the high pressure fuel pipe (14), and phase shifts between pulses are determined similarly to the previous methods.

The device contains a correlation flow meter 1, a determinant of 2 cyclic fuel supply in sections of a fuel pump and the engine as a whole, a determinant 3 of a reference frequency for measuring a cyclic fuel supply, an electronic key 4, a constant adjuster 5.

The correlation flow meter 1 contains a high pressure fuel line 6, vibroacoustic sensors 7, pre-treatment devices 8, first 9 and second 15 null organs (Schmitt triggers), a correlometer 10, a mutual energy spectrum meter 11, a differentiator 12, a first two-position switch 13, maximum 14 meter, time shift meter τ _T according to VKF 16, second 17 and third 20 two-position switches, phase-frequency characteristic meter VES 18, time shift meter τ _T according to VES 19, recorder VKF 21, register Ator Wind Farm 22.

The determinant 3 of the reference measurement frequency, including the nominal, cyclic fuel supply contains a speed sensor 23, a time interval converter to code 24, a signal register block 25, a mean speed calculation unit 26, a level selector 27, a synchronization sensor 28, block 29 the formation of the origin of the reference marks, block 30 synchronization of the origin of the angle marks, the counter of angle marks of the cycle 31, the block 32 of the formation of the angle marks of the controlled cylinder, the strobe of the cylinder 33, the clock generator of pulses 34, the adjuster 35 of the frequency of measuring the cyclic fuel supply, the adjuster 36 of the corner marks of the cycle, the adjuster 37 of the numbers of the corner marks of the cylinder, the control unit 38, the key of the corner marks of the controlled cylinder 39, the switch to two positions 40.

The output of the correlation flow meter 1 is connected to the first input of the determinant of cyclic fuel supply in sections of the fuel pump and the engine as a whole, the output of the determinant of the reference frequency for measuring the cyclic fuel supply 3 is connected to an electronic key 4, the output of which is connected to the input of the correlation flow meter 1, and the constant adjuster 5 connected to the second input of the determinant 2 of the cyclic fuel supply in sections of the fuel pump and the engine as a whole.

In the correlation flow meter 1, the first 7 ₁ and second 7 ₂ vibroacoustic sensors for moving the housing of the high pressure fuel pipe 6 are connected to the first 8 ₁ and second 8 ₂ pre-treatment devices, respectively. The output of the first pretreatment device 8 _{1 is} connected to the first null organ 9 and to the first inputs of the correlometer 10 and the mutual energy spectrum meter 11, the output of the second pretreatment device 8 _{2 is} connected to the second input of the mutual energy spectrum meter 11, with the input of the differentiator 12 and through the first switch to two positions 13 in the first position - with the second input of the correlometer 10. The output of the differentiator 12 through the first switch to two positions 13 in the second position is connected to the second input correlometer 10. The output of the first zero-organ 9 is connected to the first input of the time shift meter τ _T according to VKF 16. The first and second outputs of the correlometer 10 are connected to the maximum meter 14 and the second zero-organ 15, respectively, the outputs of which are through the second switch to two positions 17 in the first and second positions associated with the second input of the measuring time shift τ _T by CCF 16. The first output measuring mutual energy spectrum 11 is connected through the phase-frequency characteristics measurer 18 meter VES time shift τ _T of CEs 19. The third output 10 is connected to a correlation recorder cross correlation function 21 and a second output meter mutual energy spectrum of 11 - with the registrar mutual energy spectrum 22. The outputs of the time shift τ _T meter of CCF 16 and measuring the time shift τ _T of VES 19 are connected via the third switch to two positions 20 in the first and second positions, respectively, with the output of the correlation flow meter 1. The third inputs of the correlometer 10 and the meter of the mutual energy spectrum 11 are the input of the correl flow meter 1.

In the determinant 3 of the reference, including nominal, frequency of measuring the cyclic fuel supply, the rotational speed sensor 23 is connected via a switch 40 to two positions in the first position to the first signal input of the time interval converter 24 into a code, the first information and second control outputs of which are connected respectively to the first information and second control inputs of the signal register block 25, the output of which is connected to the first input of the level selector 27 through the block 26 for calculating the average speed value. Yes a synchronization counter 28 through series-connected block of the formation of the origin of the corner marks and block 30 of the synchronization of the origin of the corner marks is connected to the third input and the second input of the counter of angle marks of the cycle 31, the first input of which is connected to the output of the speed sensor 23, the first output to the fifth the control input of the block 25 of the signal registers, and the second output through the block 32 of the formation of the angular marks of the controlled cylinder with the shaper of the strobe of the cylinder 33. The clock generator 34 is connected to the second input pre the browser 24 of the time interval in the code, the frequency adjuster for measuring the cyclic fuel supply 35 with the second input of the level selector 27, the angle mark for the cycle 36 with the third input of the angle mark counter 31, and the cylinder number for the angle mark of cylinders 37 with the second input of the forming unit 32 corner marks of the controlled cylinder. The first input of the angle mark key 39 of the controlled cylinder is connected to the output of the angle mark counter 31, the second input is connected to the output of the cylinder gate former 33, and the output through the switch 40 to two positions in the second position is connected to the first signal input of the time interval converter 24 into the code. The control unit 38 is connected to the second control inputs of the average rotation speed calculation unit 26 and the angle mark origin synchronization unit 30, as well as to the fourth control input of the signal register block 25. The output of the level selector 27 is the first, and the output of the gate strobe of the cylinder 33 is the second output of the determinant 3 of the reference, including the nominal, frequency of measurement of the cyclic fuel supply.

The pre-processing device 8 is a series-connected matching charge amplifier and a peak inertial detector that selects the envelope of vibration pulses according to (10) ... (12). The zero-organ 9 is made according to the Schmitt analog trigger scheme and serves to highlight the onset of the appearance of the vibration pulse. The correlometer 10 measures the inter-correlation function of the signals arriving at its first and second inputs according to (2), (3), and (13), including if one of the signals is passed through a differentiator (12) and arrives at its second input according to (8). The correlometer 10 can be performed according to a typical scheme in analog or digital form. In the latter case, analog-to-digital converters should be switched on at the inputs of the correlometer. The maximum meter 14 and the second null organ 15 also, depending on the type of correlometer, can be made in analog or digital form according to standard schemes. The meter of the mutual energy spectrum of 11 signals arriving at its first and second inputs implements a wind farm according to (3) ... (6) and can also be performed according to a standard scheme in analog or digital form. The time-shift meter τ _T according to VKF 16 can be performed according to a typical time-interval meter measuring circuit, which measures the time interval τ _T between signals arriving at its first and second inputs. The phase-frequency characteristic meter VES 18 performs the calculations according to (6), using the active and reactive components of the VES obtained in the meter (11), and can also be performed according to the standard scheme in analog or digital form. The measuring instrument of a temporary shift τ _T according to wind farm 19 determines the time interval τ _T according to (7), and can be performed in analog or digital form. In the latter case, a microprocessor special calculator can be used. The calculation results of the VKF and wind farm and phase-frequency characteristics, if necessary, can be displayed on the recorders 21 and 22 (displays or plotters).

As a speed sensor 23, an induction primary converter can be used installed in a housing opposite the flywheel ring gear, followed by the inclusion of a Schmitt trigger and a waiting multivibrator, generating pulses of standardized duration and amplitude, or a crankshaft angular displacement photoelectric converter with a large number of angle marks, mounted on the test bench of the internal combustion engine. The converter 24 of the time interval into code is constructed according to a standard scheme when filling the time intervals with pulses from the clock generator 34. The capacity of the converter 24 and the registers of block 25 is determined by the required error in the conversion of the time interval. Block 26 for calculating the average value of the rotational speed is an arithmetic device (microprocessor special calculator) that performs the operation of finding the arithmetic mean of the numbers coming from block 25 of the signal registers, as well as adding the next one and subtracting the first number if n <n _on . The central processor of block 26 performs: summing 2z of the numbers coming from block 25 of the registers (z is the number of corner marks or the number of time intervals between adjacent corner marks); translation of the obtained number corresponding to the time interval of crankshaft rotation by 720 °, in revolutions / min according to the well-known formula; finding the average value of the rotational speed for two turns; transmitting the resulting number to a level 27 selector (a scheme for comparing number codes). As the synchronization sensor 28, a vibro-acoustic motion sensor of the theater’s enclosure is used, which is installed on the theater near the head of the injection pump of the first section. Block 29 of the formation of the origin of the reference marks includes a serially connected peak inertial detector, an analog differentiator and a pulse shaper (Schmitt trigger). The requirements for the peak inertial detector are similar to the requirements for the same in the pre-processing device 8. The block for synchronizing the start of the reference marks is a static RS-flip-flop, one of the inputs of which receives pulses from block 29, and the signals “0” or pulse are sent to the second "1", which are supplied from the control unit 38 by command or by button. The adjuster 35 of the measurement frequency consists of a set of ten-day switches (four switches), by means of which the required rotational speed, a decoder and a register are set, which generates a code corresponding to this frequency at the output. The set of angle labels 36 of the cycle consists of one or more (depending on the number of brands of monitored engines) decade switches, at each position of which is set to the counter 31 the number 2z of counted angle labels. The setter 37 of the numbers of angle marks of the cylinders consists of a decoder connected to its outputs with the block 32 of the formation of the corner marks of the controlled cylinder, a decimal counter of the number of cylinders connected by its outputs to the control inputs of the decoder; switch brand of the engine connected to its outputs with the information inputs of the decoder. Block 32 forming the corner marks of the controlled cylinder - pulse counter. Shaper of cylinder strobe 33 is a static RS-trigger, at the output of which a strobe is formed, the duration of which is determined by the duration of the working cycle of the controlled cylinder, i.e. 31 installation and reset pulses coming from the counter (first and last pulses).

, которое вводится в определитель 2 цикловой подачи топлива по секциям топливного насоса и двигателя. Предварительно в определителе 3 опорной, в том числе номинальной, частоты измерения цикловой подачи топлива с помощью задатчика частоты измерения цикловой подачи топлива 35 в селекторе уровня 27 устанавливается частота вращения коленчатого вала, при которой предполагается измерить цикловую подачу топлива; с помощью задатчика угловых меток цикла 36 в счетчик угловых меток цикла 31 вводится число угловых меток, поступающих с датчика частоты вращения 23; с помощью задатчика 37 номеров угловых меток цилиндров в блоке 32 формирования угловых меток контролируемого цилиндра устанавливаются угловые метки начала N_ϕн и конца N_ϕк рабочего такта При установке вибродатчиков одновременно на ТВД всех цилиндров устанавливаются угловые метки начала N_ϕн и конца N_ϕк каждого из цилиндров. При подготовке устройства к работе с помощью устройства управления 38 осуществляется сброс информации, хранящейся в регистре сигналов 25, блоке 26 вычисления среднего значения частоты, а также осуществляется подготовка к работе блока 30 синхронизации. Предварительно в корреляционном расходомере 1 устанавливают переключатели на два положения 13, 17 и 20 в первое положение.A device for measuring the cyclic fuel supply in a diesel engine by the phase shift between pulses characterizing the state of fuel supply, operates as follows. Using the adjuster 5, the coefficient value is preliminarily set.

, which is entered in the determinant 2 of the cyclic fuel supply in sections of the fuel pump and engine. Preliminarily, in the determinant 3 of the reference, including the nominal, frequency of measuring the cyclic fuel supply with the help of the frequency adjuster for measuring the cyclic fuel supply 35, the crankshaft speed at which it is supposed to measure the cyclic fuel supply is set in the level selector 27; using the set of angle marks of the cycle 36, the number of angle marks coming from the speed sensor 23 is entered into the counter of angle marks of the cycle 31; via setpoint 37 Room angle marks cylinder block 32 forming angle marks controlled cylinder installed Angular tags beginning N _φn and the end N _φk expansion stroke when installing vibration sensors simultaneously HPT all cylinders installed Angular tags beginning N _φn and the end N _φk each of the cylinders. When preparing the device for operation using the control device 38, the information stored in the signal register 25, the average frequency value calculating unit 26 is reset, and the synchronization unit 30 is prepared for operation. Previously, in the correlation flow meter 1 set the switches to two positions 13, 17 and 20 in the first position.

The sensor 23 generates a standard speed pulses, the frequency of appearance is proportional to the angular rotational speed ω, and the number N _φk angle of rotation φ of the engine crankshaft. The sequence of these pulses is converted in the converter 24 of the time interval into a code into a sequence of numbers (codes), which, through the switch 40 to two positions in the first position, are sequentially fed to the information input of the signal register block 25. The synchronization sensor 28 generates one pulse per cycle of the engine (for a four-stroke ICE - for 720 °), the moment of occurrence of the synchronization pulse corresponds to a certain moment of the cycle. Block 29 of the formation of the reference point of the angle marks selects the leading edge of the pulse of the synchronization sensor 28. If the signal “0” is on the control input of the block of synchronization of the reference point of the angle marks 30, a signal prohibiting the recording of information to the third control input of the block 25 of signal registers registers. If the control input of block 30 received a pulse signal "1", then with the arrival of the first pulse from block 29, the trigger of block 30 is set to another stable state. In this case, the first input of block 30 is blocked, from the output of block 30, the signal is supplied to the third input of block 25 of signal registers, which allows writing to this block the code of the number following from the converter 24 of the time interval into the code. Thus, the first time interval recorded in the block 25 of the signal registers corresponds to the same angle mark immediately following the start of fuel injection into the cylinder, on which the synchronization sensor 28 is installed. Since the input of block 30 is blocked, then in block 25 are stored samples starting at the first corner mark. Further, the indicated angle mark serves as a reference and determines the numbering of the samples stored in block 25. The error introduced by the mismatch of the reference pulse with the injection pulse does not exceed the interval between adjacent angle marks and, with a sufficiently large number (more than one hundred), the introduced error is negligible.

The time slot codes coming from the converter 24 are then written alternately in the block 25 of the signal registers. The number of recorded codes is determined by the number of angle marks per engine cycle (for a four-stroke ICE it is equal to twice the number z of angle marks on the crankshaft), i.e. the number of registers for which write permissions were received from the master 36 angle labels of the cycle, which are counted by the cycle counter 31 and when it is filled, a signal is sent from the first output of the counter 31 to the fifth input of the block 25 of the registers a signal that prohibits writing to this block of numbers. The information stored in the block 25 of the signal registers enters the block 26 calculating the average value of the speed. The code number corresponding to the average value of the rotational speed is fed to a level selector 27, where it is compared with the code set by the dial 35 for measuring the cyclic fuel supply. The level selector 27 continuously monitors the speed changing in acceleration and in stationary mode and fixes the moment the engine reaches the set frequency value n _on , at which it is necessary to determine the cyclic fuel supply of the engine, including by sections. In the case of equality n = n _{on, the} signal from the output of the selector 27 is fed to the fifth control input of the block 25 of the registers, which stops further recording of numbers in it. If the measured n is less than the required n <n _on , then the block 26 for calculating the average value of the rotational speed adds the code of the following number: (2z-1) th or (4z-1) th and subtracts the code of the first number. Block 25 of the signal registers stores numbers corresponding to 2z (or 4z) time intervals between adjacent corner marks. Due to the randomness of the fuel injection and combustion processes, the determination of the rotation speed n _on and the cyclic fuel supply of the engine, including the sections, is carried out according to the set of (at least 30) cycles (acceleration), therefore, the error in determining these values is insignificant. Simultaneously, the signal output from the selector 27 is supplied through the electronic switch 4 to the control input of the correlation meter 1. The acceleration and in the steady state in the correlation flowmeter 1 meter continuously measured time shift τ _T 16 TCF of phase (temporal) shift τ _T between the signal coming from the first null-organ 9, which corresponds to the front of the pulse measured by the vibration sensor 7 ₁ (and passed through the pre-processing device 8 ₁ ), and the signal supplied through the second switch 17 to two positions in position from the output of the maximum meter 14, which corresponds to the maximum of the cross-correlation function measured by the cross-correlation function meter 10. The phase (time) shift τ _T between the signals coming from the vibration sensors 7 ₁ and 7 is continuously measured by the time-shift meter τ _T at the wind farm 19 ₂ through the pretreatment unit 8 ₁ and 8 ₂ on the meter inputs mutual energy spectrum 11, which is transmitted from the output value (s) for the active and the imaginary components in the WEC meter fazochasto hydrochloric characteristics windfarm 18, the output of which enters into this characteristic measuring the time shift τ _T of WEC 19. When a control input of the correlation meter 1 further measurement signal TCF, WES and phase characteristics of VES blocks 10, 11 18 is stopped. The last value of the time shift τ _T obtained by the time shift meter τ _T according to VKF 16 through the third switch 20 to two positions in the first position is fed to the input of the determinant 2 of the cyclic fuel supply through the fuel pump and engine sections. The value of the cyclic feed section calculated in the determinant 2 of the cyclic fuel supply sections of the fuel pump and engine is displayed on its digital display. The value of the time shift τ _{T is} also displayed on this panel and can be used to determine the cross section of the theater of operations. When the third switch 20 is set to two positions in the second position, the last value of the time shift τ _T obtained by the time shift meter τ _T at wind farm 19 is fed to the input of the determinant 2 of the cyclic fuel supply through the fuel pump and engine sections, the operation of which is similar to that described. The last obtained dependences of the VKF and VES can also be displayed on the registrars 21 and 22. When reinstalling the vibration sensors on the corresponding theater, including the adjacent theater, the operation of the device is similar. If necessary, the values of cycle feeds for all sections can be summarized in determinant 2.

When the first 13 and the second 17 switches are set to two positions in the second position in the correlometer 1, the phase (time) shift τ _T between the signal coming from the first null-organ 9, which corresponds to the pulse front, is continuously measured by a time shift meter τ _T according to VKF 16 measured vibration pick January ₇ (and passed through the pretreatment device 8 ₁₎ and a signal output through the second switch 17 at two positions in the second position from the output of the zero-body 15 which corresponds to zero vza me correlation function of the measured cross-correlation function meter 10 when at its second input receives the output signal of differentiator 12, which corresponds to the derivative (rate) pulse measured vibration pick July ₂ (and passed through the pretreatment device 8 _2). Otherwise, the operation of the device is similar to that described.

To increase the acceleration accuracy of measuring the cyclic fuel supply of the injection pump section of the controlled cylinder, as well as the entire engine, it is necessary that the measurement of the cyclic fuel supply of all sections of the injection pump is carried out with the most accurate measurement of the frequency n _on . In this case, the switch 40 to two positions is set to the second position and the frequency adjuster 35 sets the fuel frequency n _on / i _c (i _c is the number of ICE cylinders). The second control input of the key 39 of the angle marks of the controlled cylinder receives an output signal from the output of the cylinder gate generator 33 for transmitting the angle marks from the counter 31 during the cylinder stroke to the time interval converter 24 into the code. In the future, the operation of the device is similar to that described.

The proposed method and device for measuring the cyclic fuel supply in a diesel engine by the phase shift between pulses characterizing the state of fuel supply can be used both to study the working process of the internal combustion engine and automate its operation control, and to determine the technical condition of the internal combustion engine and its components production and operating conditions. The method and device allows you to quickly and accurately get an objective conclusion about the cycle supply (consumption) of fuel, and also significantly facilitate the troubleshooting of the fuel system of the engine.

Information sources

1. Patent No. 2161725 RU, IPC F02M 65/00. A method for determining the cyclic fuel supply in a diesel engine. Claim 08/18/98, No. 98115893/28, publ. 01/10/2001.

2. Patent No. 2223413 RU, IPC F02M 65/00, G01M 15/00. A method for determining the cyclic fuel supply in a diesel engine. Claim 07/30/2002. No. 2002120155/06, publ. 02/10/2004.

Claims (8)

1. The method of determining the cyclic fuel supply in a diesel engine by the phase shift between pulses characterizing the fuel supply state, characterized in that in the free acceleration mode of the engine, the cyclic fuel supply in the diesel engine is determined by determining it from the fuel pump sections by the phase shift between pulses characterizing the movement of the housing of the high pressure fuel line of known length and cross section at the outlet of the fuel pump and in front of the nozzle, and the phase shift is determined they are determined by the maximum of the mutual correlation function or by the slope of the phase-frequency characteristic of the mutual energy spectrum of the indicated pulses obtained over many cycles, followed by the summation of the cyclic fuel supply over all sections of the fuel pump at a rotational speed of the engine crankshaft that differs by no more than 1% from the specified including nominal, speed value. 2. The method according to p. 1, characterized in that in the free acceleration mode of the engine, a phase shift is determined between pulses characterizing the movement of the high-pressure fuel pipe body at the outlet of the fuel pump and in front of the nozzle at the moment of transition through zero from positive to negative values of the cross-correlation function of the pulse at the output of the fuel pump and the pulse velocity of the fuel line in front of the nozzle, obtained over many cycles, followed by the summation of the cycle fuel supply over all sections of the fuel pump at a crankshaft speed of the engine that differs by no more than 1% from the specified, including nominal, speed value. 3. The method according to p. 1, characterized in that in the mode of free acceleration of the engine determine the cyclic supply of fuel in a diesel engine by determining it by sections of the fuel pump by the phase shift between pulses characterizing the movement of bodies adjacent to the outbreaks of the distribution diagrams along the cylinders of high pressure fuel pipelines of known length and cross section at the exits of the fuel pump or in front of the nozzles, and the phase shift is determined by the maximum mutual correlation function, or by the slope of the phases frequency characteristics of the mutual energy spectrum of the indicated pulses, or at the moment of crossing through zero from positive to negative values of the mutual correlation function of the fuel pulse of the first section of the fuel line and the speed of the pulse of the fuel line of the section adjacent to the outbreaks of the cylinders obtained over many cylinders, with preliminary determination of the phase shear one of these methods between pulses characterizing the movement of the cases at the end of the first and the beginning of the second flare adjacent to the cylinder diagram of the high pressure fuel lines with the subsequent subtraction of this shift from the phase shift between pulses characterizing the movement of the housings adjacent to the flare distribution diagram along the cylinder of the high pressure fuel lines, followed by the summation of the cycle fuel feeds over all sections of the fuel pump at engine speed, which differs by no more than 1% from the set, including nominal, frequency rotation. 4. The method according to p. 1, characterized in that in the stationary mode of full engine load determine the cyclic supply of fuel in a diesel engine by determining it by sections of the fuel pump by the phase shift between pulses characterizing the movement of the high-pressure fuel pipe body of known length and cross section by the output of the fuel pump and in front of the nozzle, or by the phase shift between pulses characterizing the movement of the bodies adjacent to the outbreaks in the distribution diagram of the fuel pipe cylinders in high pressure at the exits of the fuel pump or in front of the nozzles, as well as with preliminary determination of the phase shift between pulses characterizing the movement of the bodies at the end of the first and the beginning of the second flare distribution adjacent to the cylinders of the high pressure fuel lines with subsequent subtraction of this shift from the phase shift between pulses , characterizing the movement of the bodies adjacent to the outbreaks in the distribution diagram of the cylinders of the high pressure fuel lines, followed by summation by the cycle of fuel deliveries for all sections of the fuel pump at an engine crankshaft speed that differs by no more than 1% from a given, including nominal, speed value, and the phase shift between these pulses is determined by the maxima of the mutual correlation function, or by the slope of the phase-frequency characteristic of the mutual energy spectrum of these pulses, or at the time of transition through zero from positive to negative values of the mutual correlation function of the first of the decree pulses and the speed of movement of the second pulse of the fuel produced by the plurality of cycles. 5. The method according to claim 1, characterized in that the unknown cross-section of the fuel pipe is preliminarily determined in the diesel engine by the ratio of phase shifts between pulses characterizing the movement of the high-pressure fuel pipe body at the outlet of the fuel pump and in front of the nozzle obtained by installing sensors on one side and from different sides of the high pressure fuel line, and the phase shifts between pulses are determined by the maximum of the mutual correlation function, or by the slope of the phase-frequency nature the sources of the mutual energy spectrum of the indicated pulses, or at the moment of transition through zero from the positive to the negative values of the mutual correlation function of the first of these pulses and the speed of the second fuel pipe displacement pulse, obtained over many cycles, and the cyclic fuel supply through the sections and the diesel engine is determined with this in mind cross section of a high pressure fuel line. 6. A device for measuring the cyclic fuel supply in a diesel engine by a phase shift between the sensor pulses characterizing the fuel supply state, characterized in that it is equipped with a correlation flow meter, a cyclic fuel supply determinant in the fuel pump and engine sections, a reference determinant, including the nominal one, the frequency of measuring the cyclic fuel supply, an electronic key and a constant adjuster, and the output of the correlation flow meter is connected to the first input of the determinant of the cyclic feed In sections of the fuel pump and engine, the output of the reference frequency determinant for measuring the cyclic fuel supply is connected to an electronic key, the output of which is connected to the input of the correlation flow meter, and the constant adjuster is connected to the second input of the determinant of the cyclic fuel supply through the fuel pump and engine sections. 7. The device according to claim 6, characterized in that the correlation flow meter comprises first and second vibro-acoustic displacement sensors of the high pressure fuel pipe body, first and second pre-treatment devices, first and second zero-organs, a correlometer, a mutual energy spectrum meter, a differentiator, the first two-position switch, maximum meter, time-shift meter for mutual correlation function, second and third two-position switches, phase-frequency meter the reciprocal of the energy spectrum, a time-shift meter for the reciprocal of the energy spectrum, registrars of the cross-correlation function and the reciprocal of the energy spectrum, the first and second vibro-acoustic displacement sensors of the high-pressure fuel pipe body being connected to the first and second pre-treatment devices, respectively, the output of the first pre-processing device is connected to the first zero-organ and with the first inputs of the correlometer and the meter of mutual energy about the spectrum, the output of the second pre-processing device is connected to the second input of the mutual energy spectrum meter, with the input of the differentiator and through the first switch to two positions in the first position - with the second input of the correlometer, the output of the differentiator through the first switch to two positions in the second position is connected to the second the input of the correlometer, the output of the first zero-organ is connected to the first input of the time-shift meter according to the mutual energy spectrum, the first and second outputs of the correlometer connected to the maximum meter and the second zero-organ, respectively, the outputs of which through the second switch to two positions in the first and second positions are connected to the second input of the time-shift meter according to the mutual correlation function, the first output of the meter of the mutual energy spectrum is connected through the meter of the phase-frequency characteristic of the mutual energy spectrum with a time-shift meter for the mutual energy spectrum, the third output of the correlometer is connected to the registrar of the mutual correl function, and the second output of the reciprocal energy spectrum meter with the registrar of the mutual energy spectrum, the outputs of the time shift meter for the mutual correlation function and the time shift meter for the mutual energy spectrum are connected through the third switch to two positions in the first and second positions, respectively, with the output of the correlation flow meter , the third inputs of the correlometer and the mutual energy spectrum meter are the input of the correlation flow meter. 8. The device according to p. 6, characterized in that the determinant of the reference, including nominal, measurement frequency of the cyclic fuel supply contains a speed sensor, a time interval converter into a code, a signal register block, an average speed calculation unit, a level selector, a synchronization sensor, a block for generating a reference point of angle marks, a block for synchronizing a reference point for corner marks, a counter of angle marks of a cycle, a block for generating angle marks of a controlled cylinder, a cylinder strobe former, a clock pulse generator, a frequency adjuster for measuring the cyclic fuel supply, a set of angle markers for a cycle, a set for numbers of angle marks for the cylinders, a control device, an angle mark key for the cylinder to be controlled, a two-position switch, and the rotational speed sensor is connected through a two-position switch in the first position to the first signal input of the time interval converter to code, the first information and second control outputs of which are connected respectively to the first information and second the control inputs of the signal register block, the output of which through the average speed calculation unit is connected to the first input of the level selector, the synchronization sensor is connected to the third input of the signal register block and the second input counter of corner marks of the cycle, the first input of which is connected to the output of the speed sensor, the first output - with the fifth control input of the signal register block, and in the second output through the block of forming the angle marks of the controlled cylinder — with the cylinder strobe generator, the clock pulse generator is connected to the second input of the time interval converter to the code, the frequency measuring loop of the fuel supply frequency meter is connected to the second input of the level selector, and the angle marking clock generator is connected to the third counter input angle marks, and the cylinder angle number indexer with the second input of the corner marking unit of the controlled cylinder, the first input of the angle mark key being controlled the cylinder to be connected to the output of the angle mark counter, the second input to the output of the cylinder strobe former, and the output through the switch to two positions in the second position to the first signal input of the time interval converter to code, the control device is connected to the second control inputs of the average value calculation unit speed and synchronization block of the origin of the corner marks, as well as with the fourth control input of the signal register block, the output of the level selector is the output of the identifier different, including nominal, frequency of measurement of cyclic fuel supply.

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