CN107299863A - Method for the supply unit of the high-pressure injection system that controls internal combustion engine - Google Patents
Method for the supply unit of the high-pressure injection system that controls internal combustion engine Download PDFInfo
- Publication number
- CN107299863A CN107299863A CN201710241059.3A CN201710241059A CN107299863A CN 107299863 A CN107299863 A CN 107299863A CN 201710241059 A CN201710241059 A CN 201710241059A CN 107299863 A CN107299863 A CN 107299863A
- Authority
- CN
- China
- Prior art keywords
- returns
- capacity
- pressure
- supply unit
- combustion engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
- F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
- F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
-
- 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
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/06—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by means dependent on pressure of engine working fluid
-
- 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
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
-
- 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
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/025—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by means dependent on engine working temperature
-
- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
-
- 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
- F02D41/38—Controlling fuel injection of the high pressure type
-
- 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
- F02D2200/0606—Fuel temperature
-
- 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
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
-
- 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
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
- F02D2200/703—Atmospheric pressure
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Invention is related to a kind of method for being used to control the supply unit of the high-pressure injection system of internal combustion engine, wherein according to desired capacity of returns come the manipulation of the previously given supply unit, the desired capacity of returns is wherein obtained based at least one first capacity of returns, at least one previously given described first capacity of returns is carried out according at least to environmental pressure.
Description
Technical field
The present invention relates to a kind of supply unit for being used to control the fuel system of the high-pressure injection system for internal combustion engine
Method.
Background technology
Become known for controlling the side of the supply unit of the high-pressure injection system of internal combustion engine by the A1 of DE 10 2,008 001 240
Method.In the method, the desired value for the pressure in return line is obtained based on capacity of returns.Based on in return line
Pressure desired value and actual value comparison, correspondingly manipulate the supply unit.
It is exhausted before not allowing to be less than high-pressure pump in order to ensure the function and durability of the high-pressure pump in high-pressure injection system
To entrance pressure.In low tension loop this enter pressure generally by following parameter and constitute：In the high-pressure pump or
The pressure difference of so-called overflow valve before the high-pressure pump and the return line dependent on the throttle effect of flow and in storage
Pressure present in case.Here, the pressure present in storage tank nearly corresponds to atmospheric pressure.
Pressed to be not less than absolute the entering needed before the high-pressure pump in the height above sea level that atmospheric pressure is gradually reduced
Power is selectively so high in the pressure difference design of the overflow valve so far so as to be pressed in maximum height above sea level also in compliance with entering
Power requirement.The pressure difference corresponds to the pressure difference across the overflow valve, and the overflow valve described in the pressure difference is opened.So the pressure
Difference also referred to as opens pressure.
For the design of this very high set opening pressure with the overflow valve, disadvantageously：Low
When being run in height above sea level, the low altitude area carries higher atmospheric pressure herein, and actual entrance pressure shows before the high-pressure pump
Write on the entrance pressure needed.
The fuel supply of high-pressure injection system generally ensures by the supply unit in storage tank.Usually using electricity
Fuel transfer pump is used as the supply unit.The pump has following characteristic, and required electric current and thus required power are needed
Ask direct associated with discharge pressure the need for the supply unit.With regard to the choosing described above of the opening pressure of overflow valve
Select for the high entrance pressure related to this in low geodetic height above sea level with high-pressure pump, disappeared in the supply unit
The power demand of consumption is more than power demand required in a hydrodynamic manner.This causes unnecessary energy and unnecessary fuel
Consumption.
The content of the invention
Provide in the method according to the invention, according to desired capacity of returns come the behaviour of the previously given supply unit
Control, the desired capacity of returns is obtained based at least one first capacity of returns, and previously given institute is come according at least to environmental pressure
State at least one first capacity of returns.
First capacity of returns corresponds to the capacity of returns dependent on environmental pressure, it is necessary to the backflow dependent on environmental pressure
Measure to compensate the decline of environmental pressure.
The processing mode has advantages below：Reached in any atmospheric pressure necessary into pressure before the high-pressure pump
Power, without consuming energy unnecessary herein.Thereby, it is possible to which the power demand of the supply unit is kept into relatively low and energy
Enough reduce CO2Discharge.Particularly advantageous here is do not need pressure sensor in the low tension loop.So this is especially obtained
To realize, quantitatively controlled when using so-called（Mengengesteuert）During design, the design quantitatively controlled is generally sharp
Realized with the electric fuel pump of the adjustable rotating speed with brushless drive device.
Particularly advantageously, according to the operation characteristic parameter of the internal combustion engine come previously given second capacity of returns.This second
Capacity of returns corresponds to actual capacity of returns, and the actual capacity of returns is by spraying in the actual running status of internal combustion engine
The demand of system is drawn in the following cases：Amount of cooling water and lubrication amount the need for considering in said case for high-pressure pump.
Particularly advantageously, at least one rotating speed and/or load parameter are used as to the operation characteristic parameter of the internal combustion engine.
Particularly advantageously, by from the MAXIMUM SELECTION in first capacity of returns and second capacity of returns to select
State desired capacity of returns.
Particularly advantageously, additionally based on temperature parameters, especially fuel temperature come previously given first capacity of returns.
In another aspect, refer to the present invention relates to a kind of together with the new program code of process instruction, particular with compiling
Order and/or the source code of link instruction, described program code are used to work out the computer program that can be run on the controller, its
In, changed according to the process instruction when described program code, be namely especially compiled and/or be linked into and can run
Computer program when, residing program code is produced based on all steps by performing a method in described method
Calculation machine program.Program hair code enables in particular to provide by source code, and the source code for example can be from internet
Server is downloaded.
Brief description of the drawings
The case study on implementation of the present invention is shown in the drawings and is expanded on further in discussion below.Wherein：
Fig. 1 shows the main element of the high-pressure injection system of internal combustion engine；And
Fig. 2 shows the block diagram of the control according to the present invention.
Embodiment
Figure 1 illustrates the main element of the high-pressure injection system of internal combustion engine.Supply unit is represented with 100.The conveying
The preferred structure of unit is set to electric petrolift, and the electric petrolift preferably has brushless drive device.The supply unit 100 is by fuel
High-pressure pump 120 is conveyed to from storage tank 105 by low pressure line and filter 110.The storage tank 105, the low pressure line and institute
State filter 110 and be also referred to as area of low pressure below.The high-pressure pump 120 is by fuel with high-pressure delivery to pressure accumulating tube 130
In.Pressure-regulating valve 135 is disposed with the pressure accumulating tube 130, by the pressure-regulating valve, fuel can pass through return duct
Road 138 is discharged in storage tank 105.Fuel reaches the combustion chamber of the internal combustion engine from the pressure accumulating tube 130 by injector 140
In.
The input of the high-pressure pump 120 is equally connected by overflow valve 145 with the return line 138.Control unit
160 not only manipulate the supply unit but also manipulate the injector 140 and manipulate the pressure tune in a not shown manner
Save valve 135.In addition, the output signal of analysis different sensors 165.
In order to realize the operation according to regulation of the high-pressure pump 120, it is necessary to exist in the input end of the high-pressure pump
Specific pressure.The specific pressure commonly known as enters pressure PH.Must be by the corresponding of the supply unit 100
Manipulation enters pressure to provide this.
It ensure that the pressure before the high-pressure pump is not risen in the value not allowed by the overflow valve 145.
The design of the overflow valve is difficult.If the opening pressure DP ü of the overflow valve are selectively too high, then in the high pressure
Too high pressure is set up before pump, and is applied with the unnecessary energy of the supply unit to provide the high pressure.If overflow
Flowing pressure DP ü are selectively too low, then following situations are especially likely to occur in the case of High aititude：Before the high-pressure pump
It is too low into pressure PH.It is applied to following formula for the entrance pressure PH before the high-pressure pump：
PH=PA+DPR+DPÜ.Wherein, the atmospheric pressure that parameter PA corresponds in the storage tank, pressure DP ü correspond to described open and pressed
Power crosses over the pressure difference of the overflow valve 145, and the pressure that pressure difference DPR corresponds between the storage tank and following tie points in other words
Difference, the tie point is between the overflow valve 145 and the return line 138.
According to regulation now of the invention, the opening pressure of the overflow valve 145 is selected in the following manner：So that the opening
Pressure in normal operation in small spillway discharge in the case of be enough to ensure that high-pressure pump in normal height above sea level before entrance pressure PH.
When for example vehicle is travelled in High aititude, the atmospheric pressure PA declines, then the capacity of returns in the return line 138 is such
Improve so that the pressure difference DPR rises in the return line, and therefore, the atmospheric pressure PA of decline is in the overflow valve 145
Output end is no longer valid.
It means that in the following manner come select open valve 145 pressure difference：So that in desired medium capacity of returns
In the case of, for the environmental pressure corresponding to such as 1000m height above sea level, reach conveyed entrance pressure.Set this
In meter, the supply unit is run with low energy requirement.When vehicle is travelled in High aititude at present, atmospheric pressure is correspondingly
Decline.According to the present invention, the loss of atmospheric pressure is spent by means of improving the throttling by the return line in the same amount now
Effect is compensated.Therefore, lifting the capacity of returns according to actual fuel temperature and atmospheric pressure.Therefore ensure that the pump of needs enters
Enter pressure.
Generally there is the information on the atmospheric pressure in described control unit 160.According to present invention provide that, control
Constantly calculated in unit 160：How many capacity of returns are actually needed according to the atmospheric pressure and the fuel temperature, to ensure needs
Entrance pressure PH.In addition, calculating the actual capacity of returns existed based on actual operation characteristic parameter.If based on reality
The operation characteristic parameter on border and the actual capacity of returns that conveys is less than the returning dependent on environmental pressure needed based on atmospheric pressure
Flow, then manipulate the supply unit in the following manner：So that needed based on atmospheric pressure dependent on environmental pressure
Capacity of returns is set.
Corresponding processing mode is schematically illustrated in fig. 2.Corresponding characterisitic family is represented with 200, described
The capacity of returns dependent on environmental pressure, the sensing are saved according to the output signal of sensor 205 and 210 in characterisitic family
Device provides the signal on atmospheric pressure PA fuel temperature T in other words.Instead of the sensor, it can also use single in the control
The signal on these parameters that the inside of member 160 is present.
In addition, calculating the desired capacity of returns in the high-pressure injection system in described control unit 160.The backflow
Operating point and the fuel temperature T of the calculating of amount in particular according to the internal combustion engine.For example, with the rise of fuel temperature, institute
Capacity of returns rise is stated, because needing more amount of cooling water for the high-pressure pump in this case, the amount of cooling water is from described
High-pressure pump is back in the storage tank.
Calculating in 220, operating point and the fuel temperature T based on the internal combustion engine calculate described actual return
Flow, the operating point is detected by sensor 230.Can also provide herein, these parameters detected by sensor or
Person exists and is subsequently used as internal parameter.It is preferred that rotating speed and/or load parameter are used as into operation characteristic parameter.This
A little operation characteristic parameters define the operating point of internal combustion engine.For example the fuel quantity sprayed can be used as load parameter.
Situations below is likely to occur under corresponding running status：The actual capacity of returns is sufficiently high, so that
Necessary inhibitory action can also be produced in the return line in High aititude operation（Stauwirkung）.For
MAXIMUM SELECTION 240 is additionally defined for such case, by the actual capacity of returns with being counted in the MAXIMUM SELECTION
The capacity of returns dependent on environmental pressure calculated compares.The MAXIMUM SELECTION 240 selects parameter larger in the two parameters,
And the larger parameter is transferred into calculating 250, that is to say, that for situations below：The actual capacity of returns
It is too low, higher is just used as desired capacity of returns dependent on the value that environmental pressure is calculated.It is described to calculate 250 based on the expectation
Capacity of returns calculate the conveying capacity of needs, the conveying capacity of the needs provides by the supply unit 100.It is described to calculate
Corresponding manipulation signal is transferred to the supply unit 100 by 250.
Claims (9)
1. the method for the supply unit of the high-pressure injection system for controlling internal combustion engine, wherein according to desired capacity of returns come in advance
Give the manipulation of the supply unit, it is characterised in that the desired backflow is obtained based at least one first capacity of returns
Amount, at least one previously given described first capacity of returns is carried out according at least to environmental pressure.
2. the method as described in claim 1, it is characterised in that according to the operation characteristic parameter of the internal combustion engine come previously given
Second capacity of returns.
3. the method as described in claim 2, it is characterised in that at least one rotating speed and/or load parameter are used as in described
The operation characteristic parameter of combustion engine.
4. the method as described in claim 2, it is characterised in that by from first capacity of returns and second capacity of returns
MAXIMUM SELECTION select the desired capacity of returns.
5. the method as any one of the claims, it is characterised in that additionally based on temperature parameters, especially fuel
Temperature carrys out previously given first capacity of returns.
6. computer program, the computer program is configured to：In the method as any one of claim 1 to 5 of execution
A method all steps.
7. machine readable storage medium, is stored with based on described in claim 6 on the machine readable storage medium
Calculation machine program.
8. controller, the controller is configured to：A side in the method as any one of claim 1 to 5 of execution
All steps of method.
9. together with the program code of process instruction, described program code is used to work out the computer journey that can be run on the controller
Sequence, wherein, when described program code is converted into the computer program that can be run according to the process instruction, described program
Code produces the computer program as described in claim 6.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016206429.0 | 2016-04-15 | ||
| DE102016206429.0A DE102016206429A1 (en) | 2016-04-15 | 2016-04-15 | Method for controlling a delivery unit of a high-pressure injection system of an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107299863A true CN107299863A (en) | 2017-10-27 |
| CN107299863B CN107299863B (en) | 2022-06-14 |
Family
ID=59980343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710241059.3A Active CN107299863B (en) | 2016-04-15 | 2017-04-13 | Method for controlling a delivery unit of a high-pressure injection system of an internal combustion engine |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR102218949B1 (en) |
| CN (1) | CN107299863B (en) |
| DE (1) | DE102016206429A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06287195A (en) * | 1990-06-21 | 1994-10-11 | Union Carbide Chem & Plast Co Inc | Preparation of trimethoxysilane by methanol-silicon reaction accompanied with recirculation |
| EP0884467B1 (en) * | 1997-06-13 | 2003-05-14 | Toyota Jidosha Kabushiki Kaisha | Fuel injection apparatus of a diesel engine |
| WO2003069145A1 (en) * | 2002-02-13 | 2003-08-21 | Robert Bosch Gmbh | Fuel injection device for an internal combustion engine |
| WO2007083448A1 (en) * | 2006-01-20 | 2007-07-26 | Toyota Jidosha Kabushiki Kaisha | Fuel supply device, automobile having the fuel supply device, and fuel supply method |
| CN101377168A (en) * | 2007-08-31 | 2009-03-04 | 株式会社电装 | Injection control device of internal combustion engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10127516A1 (en) * | 2001-06-06 | 2002-12-12 | Bosch Gmbh Robert | Operating internal combustion engine involves switching on additional electrically driven fuel pump at least for starting process to feed fuel directly to common fuel rail at raised pressure |
| JP3969454B1 (en) * | 2006-06-27 | 2007-09-05 | いすゞ自動車株式会社 | Diesel engine diesel engine |
| DE102008001240A1 (en) * | 2007-11-13 | 2009-05-14 | Robert Bosch Gmbh | Method and device for controlling a fuel supply system |
| DE102008036122B4 (en) * | 2008-08-01 | 2014-07-10 | Continental Automotive Gmbh | Method for adapting the power of a fuel feed pump of a motor vehicle |
-
2016
- 2016-04-15 DE DE102016206429.0A patent/DE102016206429A1/en active Pending
-
2017
- 2017-04-13 CN CN201710241059.3A patent/CN107299863B/en active Active
- 2017-04-14 KR KR1020170048279A patent/KR102218949B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06287195A (en) * | 1990-06-21 | 1994-10-11 | Union Carbide Chem & Plast Co Inc | Preparation of trimethoxysilane by methanol-silicon reaction accompanied with recirculation |
| EP0884467B1 (en) * | 1997-06-13 | 2003-05-14 | Toyota Jidosha Kabushiki Kaisha | Fuel injection apparatus of a diesel engine |
| WO2003069145A1 (en) * | 2002-02-13 | 2003-08-21 | Robert Bosch Gmbh | Fuel injection device for an internal combustion engine |
| WO2007083448A1 (en) * | 2006-01-20 | 2007-07-26 | Toyota Jidosha Kabushiki Kaisha | Fuel supply device, automobile having the fuel supply device, and fuel supply method |
| CN101377168A (en) * | 2007-08-31 | 2009-03-04 | 株式会社电装 | Injection control device of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102218949B1 (en) | 2021-02-23 |
| KR20170118615A (en) | 2017-10-25 |
| CN107299863B (en) | 2022-06-14 |
| DE102016206429A1 (en) | 2017-10-19 |
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