CN105888864B - A kind of high pressure co-rail diesel engine autoelectrinic speed regulation device and method - Google Patents
A kind of high pressure co-rail diesel engine autoelectrinic speed regulation device and method Download PDFInfo
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- CN105888864B CN105888864B CN201610357003.XA CN201610357003A CN105888864B CN 105888864 B CN105888864 B CN 105888864B CN 201610357003 A CN201610357003 A CN 201610357003A CN 105888864 B CN105888864 B CN 105888864B
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- 239000003990 capacitor Substances 0.000 claims description 55
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- 230000001105 regulatory effect Effects 0.000 claims description 6
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- 239000000446 fuel Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000002463 transducing effect Effects 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 3
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
- F02D31/007—Electric control of rotation speed controlling fuel supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D2041/1409—Introducing closed-loop corrections characterised by the control or regulation method using at least a proportional, integral or derivative controller
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
A kind of high pressure co-rail diesel engine autoelectrinic speed regulation device disclosed by the invention, it is characterised in that：Circuit, output processing and protection circuit, ECU are adjusted including sequentially connected PID; it further include the tach signal given circuit for adjusting circuit connection with PID respectively, revolving speed processing and conditioning circuit; and the speed probe being connect with revolving speed processing and conditioning circuit; wherein ECU is connect with diesel engine, and speed probe is mounted in diesel engine.The present invention controls the distributive value output size of ECU by automatically controlling the throttle signal size of ECU, reaches engine in the case where different output power, automatically keeps specific revolving speed.
Description
Technical field
The present invention relates to control of engine speed field, in particular to a kind of high pressure co-rail diesel engine autoelectrinic tune
Speed variator and method.
Background technique
High-pressure common rail (Common Rail) electric jet technology technology is the Fuel Injection Mechanism of Diesel Engine control technology of a new generation, is referred to
In the closed-loop system of high-pressure oil pump, pressure sensor and electronic control unit (ECU) composition, the generation and injection of pressure will be sprayed
A kind of process fuel system completely separate from each other.It is that high pressure fuel is transported to common feeder line by high-pressure oil pump, is passed through
Oil pressure in common feeder line realizes accurate control, keeps high pressure pipe pressure size unrelated with the revolving speed of engine, can be substantially
Degree reduces the degree that Fuel Injection Mechanism of Diesel Engine pressure changes with engine speed.There is better power compared to conventional diesel
Property, fuel economy and more environmentally friendly emission performance, power to volume ratio, which also has, to be obviously improved.
High pressure co-rail diesel engine is used as vehicular engine more, and rotation speed change uses gas pedal and controlled,
It can not be adjusted the speed automatically, therefore high pressure co-rail diesel engine can not carry out secondary development on this basis at present, for example use
Make the power source of generating set.Its main cause, first, its repacking is complex；Second, on the market without special controller
Automatically it is adjusted the speed, cannot achieve the automatic control of revolving speed using gas pedal.Above-mentioned two reason, especially second because
Element is to limit the key point as other purposes of high pressure co-rail diesel engine.As develop it is a kind of based on high-pressure common rail
Diesel generating set, revolving speed is fluctuated with the variation of load will be unable to carry out using needing for the revolving speed of engine to be fixed on
The output of one metastable value, rear end generator could be relatively stable.
Increasingly attention with country to the environmental protection of energy conservation discharge, high pressure co-rail diesel engine is according to its fuel-economy
Property, discharge environment-friendly type the advantages that, application also can be more and more.It is therefore desirable to provide a kind of new high pressure co-rail diesel hair
Motivation autoelectrinic speed regulation device carrys out meet demand.
Summary of the invention
The purpose of the present invention is to overcome the shortcomings of the existing technology with it is insufficient, provide a kind of high pressure co-rail diesel engine from
Dynamic electrically-actuated throttle device.
Another object of the present invention is to provide a kind of high pressure co-rail diesel engine autoelectrinic speed regulating methods.
The purpose of the present invention is realized by the following technical solution：
A kind of high pressure co-rail diesel engine autoelectrinic speed regulation device, including sequentially connected PID adjust circuit, output
Processing and protection circuit, ECU (i.e. Electronic Control Unit, electronic control unit), further include respectively with PID tune
Tach signal given circuit, revolving speed processing and the conditioning circuit of circuit connection are saved, and is connect with revolving speed processing and conditioning circuit
Speed probe, wherein ECU is connect with diesel engine, and speed probe is mounted in diesel engine.
It includes rail-to-rail operational amplifier N1, resistance R1, R2, R3, R4 that the PID, which adjusts circuit, further include capacitor C1,
C2, C3, C4 and the first power source deoupling circuit and rear end export pressure filter circuit, and wherein one end of resistance R1 connects revolving speed
The output end of signal feeding circuit, the other end connect the non-inverting input terminal of operational amplifier N1；One end of resistance R2 connects revolving speed
The output end of processing and conditioning circuit, the other end connect the reverse input end of operational amplifier N1；First power source deoupling circuit is set
In the power supply incoming end of operational amplifier N1；One end is successively connected with resistance R3, R4 after capacitor C1, C2, C3 are in parallel, resistance
The other end of R4 is electrically connected with the reverse input end of operational amplifier N1, and the other end and operation after capacitor C1, C2, C3 are in parallel are put
The output end connection of big device N1；One end of capacitor C4 is electrically connected with the reverse input end of operational amplifier N1, the other end and operation
The output end of amplifier N1 connects；One end of rear end output pressure filter circuit is connect with the output end of operational amplifier N1, separately
The input terminal of one end connection output processing and protection circuit.The part is speed regulation core circuit, can be by adjusting different location
Resistance value and capacitance deploy pid parameter, realize system optimization；Wherein the output end of tach signal given circuit exports
It is given voltage Vset, revolving speed is handled and that the output end of conditioning circuit exports is speed feedback signal Vback.
First power source deoupling circuit includes capacitor C5, C6, one end and operation amplifier after wherein capacitor C5, C6 is in parallel
The power supply incoming end of device N1 is connected, other end ground connection.
Rear end output pressure filter circuit includes resistance R5, R6 and capacitor C7, wherein one end of resistance R5 and fortune
Calculate the input terminal of the output end connection of amplifier N1, other end connection output processing and protection circuit；Resistance R6 and capacitor C7 are simultaneously
The input terminal of one end connection output processing and protection circuit after connection, other end ground connection.
The output processing and protection circuit include operational amplifier N2, resistance R7, R8, R9, R10, further include the second electricity
Source decoupling circuit, pressure limiting and reverse-connection protection circuit, wherein one end connection PID of resistance R7 adjusts the output end of circuit, the other end
Connect the non-inverting input terminal of operational amplifier N2；The inverting input terminal of a termination operational amplifier N2 of resistance R8, another termination
Ground；The inverting input terminal of a termination operational amplifier N2 of resistance R9, the output end of another termination operational amplifier N2；Resistance
The output end of a termination operational amplifier N2 of R10, another termination pressure limiting and reverse-connection protection circuit；Second source decoupling circuit is set
In the power supply incoming end of operational amplifier N2.Output processing signal and protection circuit signal are finally by the real-time of PID circuit
The voltage signal of adjustment carries out level-one and follows (Vout1) and 2 times of enhanced processings (Vout2) of second level, finally by pressure limiting and reversal connection
Protection processing.Wherein Vout1 is connected to one end of R7, and the other end of R7 is connected to the 3rd foot (i.e. non-inverting input terminal) of N2, R7,
R8, R9 and op-amp N2 composition amplification network (2 times of amplification), have the 1st foot (i.e. output end) of N2 to be connected to R10 progress defeated
Out, level-one follow voltage (Vout1) be connected to ECU Oil Switch 1 end of pedal transducing signal, 2 times of amplifying circuits of second level
(Vout2) it is connected to 2 end of pedal transducing signal of the Oil Switch of ECU.It is the first via that two-way voltage, which must keep the second tunnel,
Twice of relationship, engine could normally accelerate, and otherwise, engine is in idling guard mode.
The second source decoupling circuit includes capacitor C8, C9, one end and operation amplifier after wherein capacitor C8, C9 is in parallel
The power supply incoming end of device N2 is connected, other end ground connection.
The pressure limiting and reverse-connection protection circuit include capacitor C10, tunnel diode V1, wherein capacitor C10, tunnel diode
A termination ECU after V1 is in parallel, other end ground connection.The purpose of purpose of the circuit is pressure limiting is to prevent output voltage excessively high, is caused
High engine speeds are out of control, damage to rear end electrical equipment；Reverse connecting protection is to prevent negative pressure from entering the damage that ECU causes ECU.
Revolving speed processing and conditioning circuit include operational amplifier N3, resistance R11, R12, R13, further include capacitor C10,
C11, C12, wherein one end of resistance R11 connects speed probe, and the other end connects the non-inverting input terminal of operational amplifier N3；Electricity
Hinder the inverting input terminal of one end connection operational amplifier N3 of R12, other end ground connection；One end of resistance R13 connects operation amplifier
The inverting input terminal of device N3, the output end of another termination operational amplifier N3；One end connection operational amplifier N3's of capacitor C10
Non-inverting input terminal, other end ground connection；One end and the power supply incoming end phase of operational amplifier N3 after capacitor C11, C12 are in parallel
Connection, other end ground connection；The output end connection PID of operational amplifier N1 adjusts circuit.Revolving speed processing and conditioning circuit are by revolving speed
The signal that sensor provides is by compositions such as the circuits such as amplification, filtering.The effect of speed probe is detection revolving speed, and revolving speed is believed
It number is converted to voltage signal and is output to revolving speed processing and conditioning circuit, amplify by amplifying circuit, carried out by filter circuit
The feedback end (- end) that PID adjusts circuit is given to after noise filtering.In circuit, signals of rotational speed sensor is connected to the one of R11
End is directly connected to the 3rd foot (i.e. non-inverting input terminal) of N3 after the other end connection C10 filtering of R11, and forms with R12, R13
Operational amplifier circuit is directly exported by the 1st foot (i.e. output end) of N3.Last output signal is connected to the Vback that PID adjusts circuit
End.
The tach signal given circuit includes MCU chip, operational amplifier N4, resistance R14, R15, further includes capacitor
C13, C14, C15, C16, wherein the one of resistance R14 terminates MCU chip, the non-inverting input terminal of another termination operational amplifier N4；
One end of capacitor C13 is grounded, the non-inverting input terminal of another termination operational amplifier N4；The inverting input terminal of operational amplifier N4 with
The output end of operational amplifier N4, the output end of a termination operational amplifier N4 of resistance R15, the other end connect PID and adjust electricity
Road；One end after capacitor C14, C15 are in parallel is connected with the power supply incoming end of operational amplifier N4, other end ground connection；Electricity
Hold the output end of a termination operational amplifier N4 of C16, other end ground connection.One end that resistance R15 connection PID adjusts circuit is to turn
The output end output of fast signal feeding circuit is given voltage Vset.
Another object of the present invention is realized by the following technical solution：
A kind of high pressure co-rail diesel engine autoelectrinic speed regulating method, includes the steps that following sequence：
S1. it is in running order to power on rear ECU, starts engine, the engine start about 5s time, (the specific time regarded environment
Situations such as it is uncertain), after starting successfully ECU export 5V voltage, automatic speed regulation system work once electrified；
After S2.MCU timing a period of time, output voltage is slowly given, to achieve the purpose that move back integral saturation, and judges machine
The state that device needs now, if given voltage allows machine to be in idling state in idling mode；If with setting speed
It operating normally (such as 1500rmp), then given voltage allows machine to be in setting speed state, at this point, machine rotational speed is stablized, system work
Make normal；
S3. when load changes, PID system is automatically adjusted the setting speed for making machine be in stable always at any time
Degree operation：
(1) tach signal is acquired, the tach signal of acquisition is analog signal, digital signal is converted analog signals into, and
It is transmitted to PID and adjusts circuit；
(2) parameter for giving PID gradually adds up given in the when progress of starting, carries out moving back saturated process and use
Analog circuit is given, and moves back saturated circuit using integral；
(3) parameter for adjusting P, I, D item accords with regulation when stability bandwidth and sudden unloading process of its revolving speed in stable state
Close its requirement；
S4. after work, the state of engine is adjusted to idling mode, cooling machine, rear power-off shutdown, entirely
The course of work terminates.
Compared with prior art, the present invention having the following advantages that and beneficial effect：
The present invention acquires engine rotational speed signal, simulates autoelectrinic throttle to tach signal progress closed loop PID control,
The distributive value output size of ECU is controlled by automatically controlling the throttle signal size of ECU, reaches engine in different output works
In the case where rate, specific revolving speed is automatically kept.
Detailed description of the invention
Fig. 1 is the control principle drawing of ECU.
Fig. 2 is a kind of structural schematic diagram of high pressure co-rail diesel engine autoelectrinic speed regulation device of the present invention.
Fig. 3 is that the PID of speed regulation device described in Fig. 2 adjusts the circuit diagram of circuit.
Fig. 4 is the output processing of speed regulation device described in Fig. 2 and the circuit diagram of protection circuit.
Fig. 5 is the circuit diagram of the tach signal given circuit of speed regulation device described in Fig. 2.
Fig. 6 is revolving speed processing and the circuit diagram of conditioning circuit of speed regulation device described in Fig. 2.
Fig. 7 is a kind of flow chart of high pressure co-rail diesel engine autoelectrinic speed regulating method of the present invention.
50% stable state speed regulation effect picture is loaded in Fig. 8 embodiment of the present invention.
The speed regulation effect picture of 50% sudden unloading process is loaded in Fig. 9 embodiment of the present invention.
The effect picture of 100% sudden unloading process is loaded in Figure 10 embodiment of the present invention.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited
In this.
Such as Fig. 1, it is presented in Fig. 1 the complex control signal schematic representation of ECU, from the figure we can see that ECU passes through
Complicated number and analog quantity carries out real-time control to the rail pressure of diesel engine, to carry out the control of distributive value by electronic oil-jet
System, and then realize the different load capacity of diesel engine, the output power of the diesel engine in the identical situation of revolving speed and big with oil mass
Size has direct relationship, finally show be exactly in control circuit given voltage sizes values.
Such as Fig. 2, a kind of high pressure co-rail diesel engine autoelectrinic speed regulation device, including sequentially connected PID adjust electricity
Road, output processing and protection circuit, ECU (i.e. Electronic Control Unit, electronic control unit), further include difference
Tach signal given circuit, revolving speed processing and the conditioning circuit of circuit connection are adjusted with PID, and electric with revolving speed processing and conditioning
The speed probe of road connection, wherein ECU is connect with diesel engine, and speed probe is mounted in diesel engine.
Such as Fig. 3, it includes rail-to-rail operational amplifier N1, resistance R1, R2, R3, R4 that the PID, which adjusts circuit, further includes
Capacitor C1, C2, C3, C4 and the first power source deoupling circuit and rear end export pressure filter circuit, and wherein one end of resistance R1 connects
Switch through the output end of fast signal feeding circuit, the other end connects the non-inverting input terminal of operational amplifier N1；One end of resistance R2 connects
Switch through the output end of speed processing and conditioning circuit, the other end connects the reverse input end of operational amplifier N1；First power decoupling
Circuit is placed in the power supply incoming end of operational amplifier N1；One end is successively gone here and there with resistance R3, R4 after capacitor C1, C2, C3 are in parallel
Connection, the other end of resistance R4 are electrically connected with the reverse input end of operational amplifier N1, the other end after capacitor C1, C2, C3 are in parallel
It is connect with the output end of operational amplifier N1；One end of capacitor C4 is electrically connected with the reverse input end of operational amplifier N1, another
End is connect with the output end of operational amplifier N1；Rear end exports one end of pressure filter circuit and the output end of operational amplifier N1
The input terminal of connection, other end connection output processing and protection circuit.The part is speed regulation core circuit, can be by adjusting difference
The resistance value and capacitance of position deploy pid parameter, realize system optimization；The wherein output end of tach signal given circuit
Output is given voltage Vset, and revolving speed is handled and that the output end of conditioning circuit exports is speed feedback signal Vback.
First power source deoupling circuit includes capacitor C5, C6, one end and operation amplifier after wherein capacitor C5, C6 is in parallel
The power supply incoming end of device N1 is connected, other end ground connection.
Rear end output pressure filter circuit includes resistance R5, R6 and capacitor C7, wherein one end of resistance R5 and fortune
Calculate the input terminal of the output end connection of amplifier N1, other end connection output processing and protection circuit；Resistance R6 and capacitor C7 are simultaneously
The input terminal of one end connection output processing and protection circuit after connection, other end ground connection.
Such as Fig. 4, the output processing and protection circuit include operational amplifier N2, resistance R7, R8, R9, R10, further include
Second source decoupling circuit, pressure limiting and reverse-connection protection circuit, wherein one end connection PID of resistance R7 adjusts the output end of circuit,
The non-inverting input terminal of other end connection operational amplifier N2；The inverting input terminal of a termination operational amplifier N2 of resistance R8, separately
One end ground connection；The inverting input terminal of a termination operational amplifier N2 of resistance R9, the output end of another termination operational amplifier N2；
The output end of a termination operational amplifier N2 of resistance R10, another termination pressure limiting and reverse-connection protection circuit；Second source decoupling electricity
Road is placed in the power supply incoming end of operational amplifier N2.Output processing signal and protection circuit signal are finally by PID circuit
The voltage signal that adjusts in real time carries out level-one and follows (Vout1) and 2 times of enhanced processings (Vout2) of second level, finally by pressure limiting with
Reverse connecting protection processing.Wherein Vout1 is connected to one end of R7, and the other end of R7 is connected to the 3rd foot (i.e. non-inverting input terminal) of N2,
R7, R8, R9 and op-amp N2 composition amplification network (amplification 2 times), have the 1st foot (i.e. output end) of N2 be connected to R10 into
Row output, level-one follow voltage (Vout1) be connected to ECU Oil Switch 1 end of pedal transducing signal, 2 times of amplifications of second level are electric
Road (Vout2) is connected to 2 end of pedal transducing signal of the Oil Switch of ECU.It is the first via that two-way voltage, which must keep the second tunnel,
Twice of relationship, engine could normally accelerate, and otherwise, engine is in idling guard mode.
The second source decoupling circuit includes capacitor C8, C9, one end and operation amplifier after wherein capacitor C8, C9 is in parallel
The power supply incoming end of device N2 is connected, other end ground connection.
The pressure limiting and reverse-connection protection circuit include capacitor C10, tunnel diode V1, wherein capacitor C10, tunnel diode
A termination ECU after V1 is in parallel, other end ground connection.The purpose of purpose of the circuit is pressure limiting is to prevent output voltage excessively high, is caused
High engine speeds are out of control, damage to rear end electrical equipment；Reverse connecting protection is to prevent negative pressure from entering the damage that ECU causes ECU.
Such as Fig. 6, it further includes electricity that the revolving speed processing and conditioning circuit, which include operational amplifier N3, resistance R11, R12, R13,
Hold C10, C11, C12, wherein one end of resistance R11 connects speed probe, and the other end connects the same mutually defeated of operational amplifier N3
Enter end；The inverting input terminal of one end connection operational amplifier N3 of resistance R12, other end ground connection；One end of resistance R13 connects fortune
Calculate the inverting input terminal of amplifier N3, the output end of another termination operational amplifier N3；One end of capacitor C10 connects operation amplifier
The non-inverting input terminal of device N3, other end ground connection；The power supply of one end and operational amplifier N3 after capacitor C11, C12 are in parallel connects
Enter end to be connected, other end ground connection；The output end connection PID of operational amplifier N1 adjusts circuit.Revolving speed processing and conditioning circuit
The signal that speed probe is provided is by compositions such as the circuits such as amplification, filtering.The effect of speed probe is detection revolving speed, will
Tach signal is converted to voltage signal and is output to revolving speed processing and conditioning circuit, amplifies by amplifying circuit, is passing through filtered electrical
Road is given to the feedback end (- end) that PID adjusts circuit after carrying out noise filtering.In circuit, signals of rotational speed sensor is connected to R11
One end, be directly connected to the 3rd foot (i.e. non-inverting input terminal) of N3 after the other end connection C10 filtering of R11, and with R12, R13
Operational amplifier circuit is formed, is directly exported by the 1st foot (i.e. output end) of N3.Last output signal is connected to PID and adjusts circuit
The end Vback.
Such as Fig. 5, the tach signal given circuit includes MCU chip, operational amplifier N4, resistance R14, R15, further includes
Capacitor C13, C14, C15, C16, wherein the one of resistance R14 terminates MCU chip, the homophase input of another termination operational amplifier N4
End；One end of capacitor C13 is grounded, the non-inverting input terminal of another termination operational amplifier N4；The anti-phase input of operational amplifier N4
The output end at end and operational amplifier N4, the output end of a termination operational amplifier N4 of resistance R15, the other end connect PID tune
Economize on electricity road；One end after capacitor C14, C15 are in parallel is connected with the power supply incoming end of operational amplifier N4, another termination
Ground；The output end of a termination operational amplifier N4 of capacitor C16, other end ground connection.Resistance R15 connection PID adjusts the one of circuit
End be tach signal given circuit output end output be given voltage Vset.
Such as Fig. 7, a kind of high pressure co-rail diesel engine autoelectrinic speed regulating method includes the steps that following sequence：
S1. it is in running order to power on rear ECU, starts engine, the engine start about 5s time, (the specific time regarded environment
Situations such as it is uncertain), after starting successfully ECU export 5V voltage, automatic speed regulation system work once electrified；
After S2.MCU timing a period of time, output voltage is slowly given, to achieve the purpose that move back integral saturation, and judges machine
The state that device needs now, if given voltage allows machine to be in idling state in idling mode；If with setting speed
It operating normally (such as 1500rmp), then given voltage allows machine to be in setting speed state, at this point, machine rotational speed is stablized, system work
Make normal；
S3. when load changes, PID system is automatically adjusted the setting speed for making machine be in stable always at any time
Degree operation：
(1) tach signal is acquired, the tach signal of acquisition is analog signal, digital signal is converted analog signals into, and
It is transmitted to PID and adjusts circuit；
(2) parameter for giving PID gradually adds up given in the when progress of starting, carries out moving back saturated process and use
Analog circuit is given, and moves back saturated circuit using integral；
(3) parameter for adjusting P, I, D item accords with regulation when stability bandwidth and sudden unloading process of its revolving speed in stable state
Close its requirement；
S4. after work, the state of engine is adjusted to idling mode, cooling machine, rear power-off shutdown, entirely
The course of work terminates.
In Fig. 8, in the case where band carries 50%, steady-state speed band≤0.5% meets the requirements GJB5785-2009
《Military internal combustion engine generator group general specification》Related request；
Fig. 9 is the speed regulation effect picture that 50% sudden unloading process is loaded in the embodiment of the present invention, and transient state regulation≤8% returns
Multiple time≤3S, meets the requirements GJB5785-2009《Military internal combustion engine generator group general specification》Related request；
Load the effect picture of 100% sudden unloading process in Figure 10 embodiment of the present invention, transient state regulation≤10%, when reply
Between≤3S, meet the requirements GJB5785-2009《Military internal combustion engine generator group general specification》Related request.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (10)
1. a kind of high pressure co-rail diesel engine autoelectrinic speed regulating method, which is characterized in that include the steps that following sequence：
S1. it is in running order to power on rear ECU, starts engine, ECU exports 5V voltage, automatic speed regulation system after starting successfully
Work once electrified；
After S2.MCU timing a period of time, output voltage is slowly given, and judge the state that machine needs now, if in idling
State, then given voltage allows machine to be in idling state；If being operated normally with setting speed, given voltage is allowed at machine
In setting speed state, at this point, machine rotational speed is stablized, system is working properly；
S3. when load changes, PID system is automatically adjusted the setting speed fortune for making machine be in stable always at any time
Row：
(1) tach signal is acquired, the tach signal of acquisition is analog signal, converts analog signals into digital signal, and transmit
Circuit is adjusted to PID；
(2) parameter for giving PID, starting when gradually add up given, carry out moving back saturated process and using simulation
Circuit is given, and moves back saturated circuit using integral；
(3) parameter for adjusting P, I, D items, makes regulation when stability bandwidth and sudden unloading process of its revolving speed in stable state meet it
It is required that；
S4. after work, the state of engine is adjusted to idling mode, cooling machine, rear power-off shutdown is entire to work
Process terminates.
2. a kind of high pressure co-rail diesel engine autoelectrinic speed regulation device, for realizing high-pressure common rail bavin described in claim 1
Oil turbine autoelectrinic speed regulating method, it is characterised in that：Circuit, output processing and protection are adjusted including sequentially connected PID
Circuit, ECU, further include respectively with PID adjust circuit connection tach signal given circuit, revolving speed processing and conditioning circuit, with
And the speed probe being connect with revolving speed processing and conditioning circuit, wherein ECU is connect with diesel engine, speed probe installation
In diesel engine.
3. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 2, it is characterised in that：The PID
Adjusting circuit includes rail-to-rail operational amplifier N1, resistance R1, R2, R3, R4, further includes capacitor C1, C2, C3, C4, Yi Ji
One power source deoupling circuit and rear end export pressure filter circuit, and wherein one end connection tach signal given circuit of resistance R1 is defeated
Outlet, the other end connect the non-inverting input terminal of operational amplifier N1；One end connection revolving speed processing of resistance R2 and conditioning circuit
Output end, the other end connect the reverse input end of operational amplifier N1；First power source deoupling circuit is placed in operational amplifier N1's
Power supply incoming end；One end is successively connected with resistance R3, R4 after capacitor C1, C2, C3 are in parallel, the other end of resistance R4 and operation
The reverse input end of amplifier N1 is electrically connected, and the output end of the other end and operational amplifier N1 after capacitor C1, C2, C3 are in parallel connects
It connects；One end of capacitor C4 is electrically connected with the reverse input end of operational amplifier N1, the output end of the other end and operational amplifier N1
Connection；One end of rear end output pressure filter circuit is connect with the output end of operational amplifier N1, and the other end connects output processing
And the input terminal of protection circuit.
4. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 3, it is characterised in that：Described first
Power source deoupling circuit includes capacitor C5, C6, and the power supply of one end and operational amplifier N1 after wherein capacitor C5, C6 is in parallel connects
Enter end to be connected, other end ground connection.
5. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 3, it is characterised in that：The rear end
Exporting pressure filter circuit includes resistance R5, R6 and capacitor C7, the wherein output of one end of resistance R5 and operational amplifier N1
The input terminal of end connection, other end connection output processing and protection circuit；One end after resistance R6 is in parallel with capacitor C7 connect defeated
Handle and protect out the input terminal of circuit, other end ground connection.
6. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 2, it is characterised in that：The output
Processing and protection circuit include operational amplifier N2, resistance R7, R8, R9, R10, further include second source decoupling circuit, pressure limiting with
Reverse-connection protection circuit, wherein one end connection PID of resistance R7 adjusts the output end of circuit, and the other end connects operational amplifier N2's
Non-inverting input terminal；The inverting input terminal of a termination operational amplifier N2 of resistance R8, other end ground connection；A termination fortune of resistance R9
Calculate the inverting input terminal of amplifier N2, the output end of another termination operational amplifier N2；A termination operational amplifier of resistance R10
The output end of N2, another termination pressure limiting and reverse-connection protection circuit；Second source decoupling circuit is placed in the power supply of operational amplifier N2
Power access end.
7. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 6, it is characterised in that：Described second
Power source deoupling circuit includes capacitor C8, C9, and the power supply of one end and operational amplifier N2 after wherein capacitor C8, C9 is in parallel connects
Enter end to be connected, other end ground connection.
8. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 6, it is characterised in that：The pressure limiting
It include capacitor C10, tunnel diode V1 with reverse-connection protection circuit, the termination after wherein capacitor C10, tunnel diode V1 are in parallel
ECU, other end ground connection.
9. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 2, it is characterised in that：The revolving speed
Processing and conditioning circuit include operational amplifier N3, resistance R11, R12, R13, further include capacitor C10, C11, C12, wherein resistance
One end of R11 connects speed probe, and the other end connects the non-inverting input terminal of operational amplifier N3；One end of resistance R12 connects
The inverting input terminal of operational amplifier N3, other end ground connection；The anti-phase input of one end connection operational amplifier N3 of resistance R13
End, the output end of another termination operational amplifier N3；The non-inverting input terminal of one end connection operational amplifier N3 of capacitor C10, separately
One end ground connection；One end after capacitor C11, C12 are in parallel is connected with the power supply incoming end of operational amplifier N3, another termination
Ground；The output end connection PID of operational amplifier N1 adjusts circuit.
10. high pressure co-rail diesel engine autoelectrinic speed regulation device according to claim 2, it is characterised in that：Described turn
Fast signal feeding circuit includes MCU chip, operational amplifier N4, resistance R14, R15, further includes capacitor C13, C14, C15, C16,
A wherein termination MCU chip of resistance R14, the non-inverting input terminal of another termination operational amplifier N4；A termination of capacitor C13
Ground, the non-inverting input terminal of another termination operational amplifier N4；The inverting input terminal of operational amplifier N4 is with operational amplifier N4's
Output end, the output end of a termination operational amplifier N4 of resistance R15, the other end connect PID and adjust circuit；Capacitor C14, C15
One end after parallel connection is connected with the power supply incoming end of operational amplifier N4, other end ground connection；A termination fortune of capacitor C16
Calculate the output end of amplifier N4, other end ground connection.
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| CN107401461B (en) * | 2017-09-25 | 2023-04-07 | 安徽合力股份有限公司 | External engine speed limiter |
| CN112761802B (en) * | 2021-02-23 | 2023-02-17 | 上海新动力汽车科技股份有限公司 | Sudden unloading speed regulating method for diesel engine |
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| DE10315881B4 (en) * | 2003-04-08 | 2005-07-21 | Mtu Friedrichshafen Gmbh | Method for speed control |
| CN102005999A (en) * | 2009-09-02 | 2011-04-06 | 张怀亮 | Energy-saving controller for internal combustion generating set |
| CN103410619B (en) * | 2013-08-27 | 2016-01-27 | 南车戚墅堰机车有限公司 | Diesel engine of diesel locomotive Closed-Loop Speed Governing System and speed regulating method thereof |
| CN103485914B (en) * | 2013-09-26 | 2016-01-06 | 南车戚墅堰机车有限公司 | Diesel engine of diesel locomotive rotational speed setup signal scaling system and controlling method thereof |
| CN103670747A (en) * | 2013-12-18 | 2014-03-26 | 哈尔滨工程大学 | Method for controlling rotation speed of diesel engine |
| CN205669439U (en) * | 2016-05-25 | 2016-11-02 | 海华电子企业(中国)有限公司 | A kind of high pressure co-rail diesel engine autoelectrinic arrangements for speed regulation |
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