CN106988895A - For the method and apparatus for the fuel distributing system for controlling internal combustion engine - Google Patents
For the method and apparatus for the fuel distributing system for controlling internal combustion engine Download PDFInfo
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- CN106988895A CN106988895A CN201710042326.4A CN201710042326A CN106988895A CN 106988895 A CN106988895 A CN 106988895A CN 201710042326 A CN201710042326 A CN 201710042326A CN 106988895 A CN106988895 A CN 106988895A
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- Prior art keywords
- pressure
- delivery pump
- feature
- pump
- combustion engine
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Classifications
-
- 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
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2438—Active learning methods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
-
- 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
- F02D41/30—Controlling fuel injection
- F02D41/3082—Control of electrical fuel pumps
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The present invention relates to a kind of method for being used to control the fuel distributing system of internal combustion engine, wherein, the fuel distributing system includes delivery pump and high-pressure pump, when starting the internal combustion engine, the manipulation signal of the delivery pump is raised, and obtains at least one of pressure in high-pressure area and shows the feature of characteristic.
Description
Technical field
The present invention is using the apparatus and method of the preamble according to independent claims as starting point.
Background technology
A kind of known method for being used to control the fuel distributing system of internal combustion engine from the A1 of DE 198 53 823.The combustion
Expect that allocating system includes delivery pump and high-pressure pump.The delivery pump is by fuel from fuel reserve container（Vorratsbehälter）
High-pressure pump is delivered to by area of low pressure.The high-pressure pump delivers into fuel into high-pressure area, and the high-pressure area is outstanding
It is to include so-called rail.Fuel reaches the injector of the single combustion chamber of the internal combustion engine from the rail（Injektor）.
In the system used now in volume production, the fuel distributing system is made up of low-pressure system and high-pressure system.
The low-pressure system is substantially made up of the delivery pump.The high-pressure system is substantially by high-pressure pump and pressure sensor group
Into.Here, preferably using the low-pressure system being previously controlled, the low-pressure system being previously controlled is not having due to cost
Also must be enough in the case of having the pressure sensor in the low-pressure system.People to be pointed out in such systems
It is：Because in the absence of the pressure information of pressure sensor, using a kind of pre-control for the delivery pump.Due to especially
It is the reason for the reason for being the different tolerances of the delivery pump and other boundary conditions, this to depend on pressure and/or defeated
The pre-control for the amount of sending is defective, and does not thus provide the desired low pressure exactly.
Due to intensity, abrasion and functional reason, the high-pressure pump supplied by the low-pressure system is necessarily required to one
Fixed precompression（Vordruck）, the steam pressure that the precompression must partly substantially in used fuel
（Dampfdruck）On.In order to avoid possible pressure underflow, pressure is less than rated value in other words
（Druckunterschreitung）, the tolerance must give preposition in the pre-control（vorhalten）.In volume production
In, this causes the precompressed value being unduly increased on average.Because the low pressure generation carried out by the delivery pump needs vehicle-mounted
The energy of power network, in this way for the fuel consumption of vehicle because tolerance is preposition（Toleranzvorhalt）'s
Reason is not optimal.
The content of the invention
With independent claims feature, the method according to the invention, which correspondingly has, to be had the advantage that：Can be by sample
This tolerance（Exemplartoleranzen）It is compared, and can result in the significant saving of energy whereby.
It is arranged according to the present invention, in the method for the fuel distributing system for controlling internal combustion engine（Institute in the method
State delivery pump and the high-pressure pump in high-pressure system that fuel distributing system is included in low-pressure system）In, it is described interior when starting
During combustion engine, the manipulation signal jump shape of the delivery pump（Sprungförmig）Rise so that the pressure in high-pressure area
, at least one show that the feature of characteristic is acquired.
Whereby, can characteristic that is very simple and showing the delivery pump being arranged in the vehicle exactly, and
And the manipulation signal of the delivery pump can be corrected in a straightforward manner.
Particularly advantageous characteristics is for showing the characteristic of the delivery pump, and following amounts is recognized according to of the invention：
The duration of pressure rise, the greatest gradient of pressure rise and/or absolute pressure differential.These are characterized in easily to determine
, and depend strongly on the characteristic of the delivery pump.It the only one in these features can be used or can also be many
Individual feature.
Particularly advantageously, the manipulation signal is placed in a kind of base value when starting（Basiswert）, and with this base
It is worth and is raised for starting point jump shape.Here, the base value is so selected so that carried out just in the high-pressure system a small amount of
Pressure rise.
By the measure enumerated in the dependent claims, the favourable of the device that provides in the independent claim is realized
Modification and improvement project.
On the other hand, can be in control for setting up the present invention relates to a kind of new program code with process instruction
The computer program run on device processed, especially band compiling instruction（Compilieranweisung）And/or link instruction
（Verlinkungsanweisung）Source code, wherein, if described program code is changed according to the process instruction（Especially
It is compiling and/or link）For a kind of computer program that can be run, then described program code is just drawn for implementing to be retouched
A kind of computer program of all steps of method in the method stated.Especially, this program code can be by following source generations
Code（Quellcode）Provide：The source code can be for example from internet server download.
Brief description of the drawings
Embodiments of the invention are shown in the drawings, and are further illustrated in following description.Accompanying drawing
Show：
Fig. 1：Fuel feed system（Kraftstoffzuführsystem）Primary element；
Fig. 2：The different amounts described in time；With
Fig. 3：For illustrating the plan of establishment according to the present invention（Vorgehensweise）Flow chart.
Embodiment
Figure 1 illustrates a kind of fuel distributing system（Kraftstoffzumesssystem）Primary element.In Fig. 1
In, delivery pump（Förderpumpe）With 100 marks.Fuel is passed through a kind of check-valves by the delivery pump from tank 110（R
ückschlagventil）115 and low-pressure tube（Niederdruckleitung）It is delivered at high-pressure pump 120.The high-pressure pump
120 set up pressure in high-pressure area.Especially, the high-pressure area includes pressure reservoir（Druckspeicher）, the pressure
Power memory is also referred to as rail（Rail）130.In addition, arranging pressure sensor 140 in the high-pressure area.From the rail
130 cause fuel to be entered by the injector 150 in the combustion chamber of the internal combustion engine.By control device 160 come for
Set up by the pressure of the high-pressure pump 120, the opening and closing of the injector 150, the power output of the delivery pump 100
It is controlled.This control device 160 also analyzes the output signal of the pressure sensor 140.
Region between the delivery pump 100 and the high-pressure pump 120 is referred to as area of low pressure.This area of low pressure passes through
Pressure limiting valve 170 is connected with the tank 110.Comprising check-valves 115 due to, the pressure once set up is kept
In the low-pressure tube.Due to leakage effect（Leckageeffekt）The reason for, in fact it could happen that a small amount of pressure reduction.
Preferably, the delivery pump is driven with electricity, and applies arteries and veins to the delivery pump by the control device 160
Rush width modulated（pulsweitenmodulierte）Signal.The delivery pump has expanded certain in the area of low pressure
Fuel pressure.If the fuel pressure has exceeded a kind of value of determination, then the pressure limiting valve 170 is with regard to the near fuel reserve
The connection of container 110 is opened.This is carried out under following backgrounds first：It is determined that running status in, in the area of low pressure
In do not have to carry out unintentional pressure to set up.This is the situation for example when closing the internal combustion engine, in this case, by institute
The heating of fuel is stated, the pressure in the area of low pressure may be raised tempestuously.
The high-pressure pump 120 establishes a kind of pressure correspondingly needed for injection in the rail 130.By institute
State fuel quantity and therefore the pressure in the rail can be by using described 160 pairs of institutes of control device that high-pressure pump 120 conveyed
High-pressure pump is stated to carry out corresponding manipulation to adjust.
A kind of combined characteristic is implemented in the control device（Kennfeld）, the root in the combined characteristic
A kind of dutycycle is deposited according to different operation characteristic values（Tastverhältnis）（The delivery pump is manipulated using the dutycycle
100）, so as to come convey it is described in requisition for fuel quantity, or set up in the area of low pressure a kind of corresponding pressure.
It is according at least to desired, the to be conveyed fuel quantity and in the area of low pressure, wait to adjust in the combined characteristic
Whole goal pressure come deposit it is described manipulation signal, especially described dutycycle.In advantageous embodiment, additionally it is possible to institute
State combined characteristic and other input values are set（Eingangsgröße）.
Due to tolerance, in same manipulation signal, the different samples conveying of usual identical delivery pump is different
Conveying capacity.This is also referred to as sample distribution（Exemplarstreuung）.Now, it is set to according to of the invention：By means of one
Plant adaptive method（Adaptionsverfahren）Or the method for performance characteristic（Charakterisierungsverfahren）Come
It is determined that or the estimation delivery pump tolerance.By means of the understanding to tolerance, (this is meaningful for following knowledge：It is described defeated
Pump is sent to delivered more or less pressure or conveying capacity than a kind of nominal pump), for the manipulation phase of the delivery pump
Should be optimized, without preposition being manipulated with larger to the pump.With purely by the system of pre-control compared with,
By the delivery pump, the pre-control that improves, at the same time during lower manipulation power, additionally it is possible to preferably in accordance with described
Low pressure recycle（Niederdruckkreis）In, desired rated pressure.
This method obtained with tolerance for performance characteristic（Toleranzerfassung）Implement as described below.
When the engine cold-start, typically in opening car door or when starting the internal combustion engine the latest, to the delivery pump
100 carry out the manipulation of several seconds.This is commonly referred to as delivery pump-prerun（Förderpumpen-Vorlauf）.If described
Shut down before engine the long period and in the area of low pressure and the pressure in the high-pressure area very big
If declining in degree, then occurred as soon as a kind of cold start-up.It is preferred that by car door contact-making switch（Türkontaktschalter）
To recognize the unlatching of the car door.By means of so-called folder portion（Klemme）15 recognize the startup of the internal combustion engine, the folder
Portion shows that igniting is connected.This purpose of manipulation that carries out before activation or when starting is：Rapidly and already described
The full of engine turns（Durchdrehen）Low pressure is for high voltage startup necessary to providing for before
（Hochdruckstart）.After the delivery pump-prerun, even if not manipulated to the delivery pump, by comprising
In the delivery pump-outlet（Förderpumpen-Ausgang）Pressure in the check-valves 115 at place, the low pressure recycle
Also largely it is maintained（Deduct the leakage that may exist on a small quantity）.
In the method according to the invention, when beginning setting up pressure, the pressure is not to be promoted to a kind of maximum at once
Value, but slowly raised with rank.In this regard, the delivery pump 100（The delivery pump is generally possible to manipulate by PWM-
（PWM-Ansteuerung）Infinitely it is adjusted in the conveying capacity）With special, step-like change in duty cycle process
（Tastverhältnisverlauf）Manipulated.Then, the pressure in the high-pressure area also just with the low pressure
Similar mode is raised in region.This rise in the high-pressure area can be as described in the high-pressure area
Rail pressure sensor is identified.Pressure in the fuel system is raised stairstepping in the way of showing characteristic, wherein,
The dynamic of the low-pressure system（Dynamik）Play very big effect.By pressure storage capacity and according to boundary condition, institute
Stating fuel system has the dynamic feature for showing characteristic.The boundary condition is substantially determined by following amounts：Pass through rubber
The flexibility of the fuel system of conduit, temperature, modulus of elasticity.It is described dynamic by analyzing when the step-like pressure rises
The pressure rise of state, have identified the difference in the conveying power of the delivery pump.
In order to be analyzed, in developing stage, with a kind of delivery pump nominally conveyed and with boundary position
（grenzlagig）Delivery pump come implement measurement.Here, in order to carry out the test manipulation, their dynamic value is stored in
In the memory of the control device.When the measurement of feature is represented described in during the prerun of the delivery pump, then
Just the dynamic characteristic value currently obtained and the characteristic value that is stored in the memory are compared.Thus, by comparing
It was found that：The delivery pump, the sample that is present in the vehicle which kind of tolerance position there is（Toleranzlage）.Correspondingly
The manipulation signal of the delivery pump is modified.Preferably, to the pre-control value of the delivery pump（Vorsteuerwert）
Corrected accordingly.For example, the output signal of the combined characteristic is improved or the corresponding value of reduction.But
It can be provided that, correspondingly change the value of the combined characteristic.
For the feature for showing characteristic（Next it is also referred to as characteristic value）The determination of progress, it is currently real as follows
Apply.Methods described is substantially divided into two parts, and the zero-bit conveying is obtained first（Nullförderung）Dutycycle TVb.
This is essential, also intactly to give the system by the jump of the dutycycle in method later.Only
When the dutycycle TVb that the zero-bit is conveyed is exceeded, the delivery pump just starts conveying.The dutycycle of this zero-bit conveying
Next TVb is also referred to as base value TVB.If the jump is accessed in less dutycycle（aufschalten）, then jump
A part for jump is not conveyed in this region just to be lost, and has distorted feature description
（Charakterisierung）Result.Next, in one section of stand-by period（Wartezeit）Afterwards, by the jump DTV
Give the dutycycle.Increased it means that the dutycycle is jumped with described value DTV amplitude to shape.Then, in institute
State the pressure in area of low pressure and the rail pressure power in the high-pressure area is raised in the way of showing characteristic.At one section etc.
After treating the time, if reach the starting of oscillation of the rail pressure power（eingeschwungen）State, then just calculate three
Plant characteristic value（Kenngröße）, three kinds of characteristic values are also referred to as showing the feature of characteristic.
Depict the manipulation signal TV on time t in fig. 2 a, depict in figure 2b on time t in height
Pressure P in intermediate pressure section.In moment t0, the manipulation of the method according to the invention is proceeded by.Until moment t1, the manipulation letter
Number it is increased to described value TVb.It is ensured that in this manipulation signal：So that the delivery pump conveying fuel.As a result,
Pressure rise in the high-pressure area is to value PS0.
In the stand-by period（The stand-by period is so measured（bemessen）：So that a kind of state of stabilization is able to
Reach, and cause the pressure P in the high-pressure area definitely to reach value PS0）Afterwards, in moment ts, the manipulation
Value TVS is increased to signal jump shape with described value DTV amplitude.As a result, the pressure P is increased to value PS90.This
Value is reached in moment t2.In moment t3, the dutycycle is increased to its maximum of T VM.It is caused by this, the pressure P
Until moment t4 reaches its maximum PS100.
The change procedure of the amount is only qualitatively depicted in fig. 2.
Obtained ensuing amount as the feature for showing characteristic.Fisrt feature is a kind of pure time-related spy
Levy.By following duration（Zeitdauer）Obtained as fisrt feature：The pressure rise needs the duration,
At the time of to change with jumping shape by the manipulation signal, a kind of pressure of determination is increased to from the output pressure PS0
Force value.Preferably, following duration are used as fisrt feature：The pressure needs the duration, to rise
Up to described value PS90.Therefore, the poor t2-ts that this feature corresponded between described two moment.
Second feature corresponds to following maximum gradient dp/dt：The pressure is set up and presents this most during jumping
Big gradient.During the dutycycle-jump, it is determined in the interval defined.In fig. 2, this feature corresponds to
Ratio between DP and t2-ts.During actual pressure change, the Pressure versus Time t in this interval is asked micro-
Point（differenzieren）, and by the derivative of the pressure change process（Ableitung）Maximum be used as the second table
The feature of bright characteristic is used.
Third feature correspond to the value before the jump PS0 accessed and after a jump described in by starting of oscillation
Pressure differential DP between pressure value P S100.Alternative solution is can also to use the pressure value P S90.
Then the feature is either individually or collectively continued with, will pass through and be stored in the control device
The characteristic for the nominal-delivery pump, the worst-situation-delivery pump and best-situation-delivery pump
（Kenndaten）Comparison obtain the tolerance position of the delivery pump.Time accordingly, for after, to the delivery pump
Pre-control be corrected.Until effective feature description measurement next time（Charakterisierungs Messung）All
Use these values.If the feature for showing characteristic correspond to the worst a kind of-situation-delivery pump, then just make the duty
Than being improved with a kind of amplitude of the value of determination.If the feature for showing characteristic correspond to a kind of best-situation-conveying
Pump, then just make the dutycycle using a kind of value of determination as amplitude to reduce.It is accomplished that by this set scheme, in institute
The sample used in vehicle is stated to be loaded with the manipulation signal exactly（beaufschlagen）, the manipulation signal is to need
Want, so as to which desired fuel quantity is conveyed in desired pressure.
The conveying of the delivery pump carries out stronger, and compared with nominal-delivery pump, pressure rise obtains faster.This
The fisrt feature is shown when reduction.In other words, until reaching that the duration of the pressure value P S90 diminishes
.Because make it that the high pressure is reached more quickly by the delivery pump, stronger conveying, correspond to
The maximum pressure gradient of the second feature becomes greatly on the contrary.The third feature has also made same reaction.By institute
Delivery pump effectively is stated, also some changes are big by the maximum pressure PS100.It is corresponding with this to be, the worst-feelings
The performance of condition-delivery pump is opposite, by more inefficient conveying, and the worst-situation-delivery pump result in one kind and carry
Smaller gradient, slower and somewhat smaller pressure is set up.
Figure 3 illustrates for methods described, exemplary flow chart.
The plan of establishment is started with step 300.Inquiry（Abfrage）305 check：Whether delivery pump should be transported in advance
OK.Examined, whether driver is wanted in a short time by vehicle launch.For example, this is come by means of car door contact
It is identified.If it is not the case, then re-starting the inquiry 305.If have identified the pre- fortune of the delivery pump
OK, then inquiry 310 is checked：Since the internal combustion engine last time is run, minimum time（Mindestzeit）Whether expire
.It is ensured that the pressure in the area of low pressure and described high-pressure area have decreased to ring by means of this inquiry
Border pressure.If this time conditions is not met also, then the normal manipulation with regard to carrying out the delivery pump in step 370.
If the inquiry 310 recognizes the time conditions and is satisfied, then just in step 315 with minimum duty
The delivery pump is manipulated than TV0, is ensured that in the minimum duty cycle, the delivery pump is not conveyed also.
Then, the pressure value P S0 attached troops to a unit, in this manipulation of the delivery pump, the pressure attached troops to a unit are obtained in step 320
Force value is appeared in the high-pressure area.
In step 325, the manipulation signal TV of the delivery pump is improved.Inquiry 330 afterwards is checked：Whether can recognize
To pressure rise.If it is not the case, so just re-starting step 325.If it is the case, so just in step
Stored in 335 using the value of current dutycycle as the dutycycle TVb that the zero-bit is conveyed.
In step 340, until there is a kind of pressure value of stabilization, one section of stand-by period has been waited.It is preferred that waiting one section
Regular time.Then, in step 345, the dutycycle is made to be improved using the jump value DTV as amplitude.After
Step 350 in, until there is a kind of pressure value of stabilization, waited one section of stand-by period.Here, it is also preferred that waiting one section admittedly
The fixed time.
In step 355 after, show the feature of characteristic described in acquisition.In step 360 after, value is modified
（Korrekturwert）Acquisition, the correction value be used for manipulate the delivery pump.
Then, in step 370, in the case where using the correction value got, the delivery pump is being carried out just
Often manipulation.In step 380, methods described terminates.
Delivery pump with conventional rectifier motor is described the method for the suggestion, the conventional rectifier motor one
As manipulated by the PWM- signals with variable dutycycle.Here, being adjusted by the dutycycle by described defeated
The electric current of pump is sent, and therefore adjusts the rotating speed substantially of the motor.Certainly, methods described is for electric rectification motor
（elektrisch kommutierter Elektromotor）, so-called BLDC motors are also well suited for.Institute
State electric rectification motor providing and manipulated in advance by rotating speed.If it is in the manipulation, be previously controlled it is oblique
Slope and jump be not with the dutycycle but currently manipulated with the rotating speed provided in advance, and equivalently by described turn
Speed recognizes to implement to be used for tolerance（Toleranzerkennung）Analysis, then proposed method currently just similarly rises
Effect.
Claims (8)
1. the method for the fuel distributing system for controlling internal combustion engine, wherein, the fuel distributing system is included in area of low pressure
In delivery pump（100）And high-pressure pump（120）, when starting the internal combustion engine, by the manipulation signal of the delivery pump（TV）
Raise to jump shape so that at least one of pressure in high-pressure area shows that the feature of characteristic is obtained.
2. according to the method described in claim 1, it is characterised in that use at least one in following amounts as feature：
The duration of pressure rise, the greatest gradient of pressure rise（dP/dt）And/or absolute pressure differential（DP）.
3. the manipulation signal according to the method described in claim 1, it is characterised in that when starting, is arranged on a kind of base
Value（TVb）On, and raised by starting point of this base value.
4. the method according to any one of the claims, it is characterised in that based on it is described at least one show characteristic
Feature correct the manipulation signal of the delivery pump.
5. computer program, the computer program is configured to, implement method according to any one of claim 1 to 5
In a method all steps.
6. machine readable storage medium, computer according to claim 6 is stored on the machine readable storage medium
Program.
7. control device, the control device is configured to, implement in method according to any one of claim 1 to 5
All steps of one method.
8. for setting up program code computer program, with process instruction that can be run on control device, wherein
Described program code building computer program according to claim 6, if it changed according to the process instruction
If a kind of computer program that can be run.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016200716.5A DE102016200716A1 (en) | 2016-01-20 | 2016-01-20 | Method and device for controlling a fuel metering system of an internal combustion engine |
| DE102016200716.5 | 2016-01-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106988895A true CN106988895A (en) | 2017-07-28 |
| CN106988895B CN106988895B (en) | 2022-05-24 |
Family
ID=59256177
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710042326.4A Active CN106988895B (en) | 2016-01-20 | 2017-01-20 | Method and device for controlling a fuel metering system of an internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN106988895B (en) |
| DE (1) | DE102016200716A1 (en) |
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| CN101446246A (en) * | 2007-11-29 | 2009-06-03 | 罗伯特·博世有限公司 | Fuel system operating method for internal-combustion engine |
| CN102076947A (en) * | 2008-08-01 | 2011-05-25 | 欧陆汽车有限责任公司 | Method for adapting the performance of a fuel prefeed pump of a motor vehicle |
| CN103201486A (en) * | 2010-10-21 | 2013-07-10 | 罗伯特·博世有限公司 | Method for operating an internal combustion engine |
| DE102011005663A1 (en) * | 2011-03-16 | 2012-09-20 | Bayerische Motoren Werke Aktiengesellschaft | Operating method of electric fuel pump in low pressure fuel system of internal combustion engine, involves changing opening timing of pressure limiting valve such that the actual performance reproaching value of fuel system is obtained |
| CN104454281A (en) * | 2013-09-16 | 2015-03-25 | 罗伯特·博世有限公司 | A method for operating an internal combustion engine in an emergency operating mode |
| JP2015121108A (en) * | 2013-12-20 | 2015-07-02 | 株式会社デンソー | Pump control device |
| DE102014205919A1 (en) * | 2014-03-31 | 2015-10-01 | Robert Bosch Gmbh | Method for operating an electromagnetically operated switching drive, apparatus for carrying out the method, computer program and computer program product |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016200716A1 (en) | 2017-07-20 |
| CN106988895B (en) | 2022-05-24 |
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