EP1336040A2 - Verfahren zum einspritzen von kraftstoff während der startphase einer brennkraftmaschine - Google Patents
Verfahren zum einspritzen von kraftstoff während der startphase einer brennkraftmaschineInfo
- Publication number
- EP1336040A2 EP1336040A2 EP01996678A EP01996678A EP1336040A2 EP 1336040 A2 EP1336040 A2 EP 1336040A2 EP 01996678 A EP01996678 A EP 01996678A EP 01996678 A EP01996678 A EP 01996678A EP 1336040 A2 EP1336040 A2 EP 1336040A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- crankshaft
- internal combustion
- combustion engine
- injector
- cylinder
- 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
Links
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
- F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
-
- 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
- F02D41/047—Taking into account fuel evaporation or wall wetting
-
- 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
- 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
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
Definitions
- the present invention relates to a method for injecting fuel into a multi-cylinder internal combustion engine.
- the cylinders are divided into a first and a second cylinder group depending on the two different levels of the camshaft signal.
- the cylinders of the first group are supplied with the pre-injectors (group injectors) immediately after a start detection, while the cylinders of the second group are supplied with the pre-injectors with a time delay, either in a predetermined order or in a normal sequential order, depending on whether synchronization between the camshaft and crankshaft has already taken place.
- the present invention is based on the object of specifying a method for injecting fuel into a multi-cylinder internal combustion engine, which enables an emission-optimized quick start of the internal combustion engine.
- the present invention is based on the knowledge that an internal combustion engine is disengaged after being switched off
- n standstill angle positions are initially unknown.
- the number of unknown standstill angular positions can be reduced to n / 2.
- a cylinder can be selected which is the first to be supplied with a pre-injector, while the other pre-injectors are released later.
- the first cylinders are not supplied with the pilot injectors at the same time, but always at different times.
- the standstill angular positions are divided into two groups, and that group is determined which comprises the current standstill angular position at which the internal combustion engine has stopped.
- the first group whose inlet valve is closed or at least predominantly closed when the first pilot injector is dispensed is the first to be supplied with a pilot injector.
- the angular distance between the angular position at which the first pre-injector is delivered and the angular position of the first synchronization pulse are expediently compared with the angular distance between two adjacent stored standstill angular positions and as a function of this comparison determines the order of the next pre-injections.
- the method according to the invention ensures that all pre-injectors actually take part in the combustion, so that the pollutant emissions, in particular the HC emissions, drop to the level of a sequential start. Nevertheless, an early fuel injection is possible, so that the method according to the invention enables a faster start compared to a sequential starting method.
- Figure 1 is a schematic sectional view of an internal combustion engine in the form of a gasoline engine with gasoline injection;
- FIGS. 2 and 3 are diagrams in which speed, camshaft, crankshaft, injector and intake valve signals are plotted over time.
- FIG. 1 shows a schematic partial section through an internal combustion engine which, in the exemplary embodiment described, is designed for illustration purposes as a four-cylinder gasoline engine with gasoline injection.
- a common electronic control unit 1 is assigned to the internal combustion engine 3, which controls the ignition, fuel injection and other processes of the internal combustion engine.
- At least one inlet valve 6 and at least one injection valve 2 are assigned to each cylinder 7.
- the injection valve 2 injects fuel into the intake manifold immediately before or onto the valve plate of the intake valve 6.
- the crankshaft 8 is assigned a crankshaft sensor 4 with a toothed sensor wheel, which generates a crankshaft signal CRK representing the crankshaft angle (see lower half of FIGS. 2 and 3).
- the camshaft 5, which controls the intake valves 6 and rotates at half the speed of the crankshaft 8, is assigned a camshaft sensor 9 for generating a camshaft signal CAM (see lower half of FIGS. 2 and 3).
- the camshaft 5 can be connected to the crankshaft 8 in a rotationally fixed manner or can also be adjustable in angle relative to it.
- crankshaft signal CRK corresponds to one tooth of the transmitter wheel, a double tooth gap after every 60 teeth serving as synchronization pulse S for one full revolution of the crankshaft 8.
- the camshaft signal CAM has two different levels, which are assigned to two successive revolutions of the crankshaft.
- the camshaft signal CAM and the crankshaft signal CRK with its synchronization pulses S allow the crankshaft position to be clearly assigned in the work cycle.
- the camshaft signal can also have other pulse and level shapes; however, it should be ensured that the camshaft signal allows each work cycle to be divided into two segments (360 °) corresponding to two successive crankshaft revolutions (720 °).
- the injection valves 2 can therefore be controlled and actuated in the usual sequential injection mode with the aid of the crankshaft signal and camshaft signal.
- the crankshaft position and thus the position of the pistons is not yet known, and there may also be no synchronization between the camshaft and the crankshaft. Injection in sequential injection mode is therefore not possible.
- the speed N of the internal combustion engine is plotted over time.
- the control signals IV1-IV4 for the four injection valves are plotted over time for the four cylinders 1 to 4 of the four-cylinder internal combustion engine, the four pilot injectors I being designated II-14.
- the control signals EV1 - EV4 for the four intake valves are plotted over time, the opening impulses for the opening of the intake valves being designated E1 - E4.
- the top two dead lines of FIG. 2 show the pulses for the top dead center (TDC1-TDC4) of the four cylinders and top dead center (TDC1) of the cylinder 1.
- a starter identification E is provided for starting the internal combustion engine.
- the camshaft signal CAM is either high or low, in the example of FIG. 2 low.
- the cylinders 1 to 4 can be divided into two groups (in the example the Figure 2 in a first group with the cylinders 3, 4 and a second group with the cylinders 1, 2).
- this also makes it known whether the internal combustion engine has stopped in the first two standstill angular positions or the second two standstill positions. In other words, the number of unknown standstill angular positions is reduced to two.
- the two cylinders 3, 4 of the first cylinder group are supplied with the pre-injectors at a predetermined angular distance from the starter detection E (for example after eight recognized and valid teeth of the crankshaft sensor), as indicated by the pre-injectors 13 'and 14.
- the pre-injector 13 ′ would be dispensed shortly before the associated intake valve EV3 was closed, which would lead to over-riching of the fuel-air mixture and to the discharge of unburned fuel.
- Starter detection E supplies only the cylinder whose inlet valve is closed or predominantly closed with the pre-injector; in the example of FIG. 2, this is the cylinder 4 with the pre-injector 14.
- the pre-injector 13 ' is not dispensed at this time, as indicated by a dotted line P.
- the crankshaft has stopped 20 teeth before the first synchronization pulse S. Therefore, if the first synchronization pulse S has already occurred after 28 teeth from start detection E (ie 20 teeth after the first pre-injector 14) (which is the case in the example in FIG. 2), it can be seen that the crankshaft had stopped 20 teeth before the synchronization pulse S. As soon as the synchronization pulse S has occurred, the internal combustion engine is synchronized, and thus a defined sequence of the pre-injections occurring after the synchronization pulse S can be determined by the central control unit 1.
- start detection E ie 20 teeth after the first pre-injector 14
- the diagram in FIG. 3 corresponds to that in FIG. 2, apart from the fact that at the time of the start detection E the camshaft signal CAM is high and the internal combustion engine 50 ( ⁇ 7) teeth of the crankshaft sensor has stopped before the first synchronization pulse S. Since the camshaft signal CAM is high-level at the time of the start detection E, the first cylinder group is formed by the cylinders 1, 2 and the second cylinder group by the cylinders 3, 4. In this case (after eight recognized and valid teeth of the crankshaft sensor) only the cylinder 2 is supplied with the pre-sprayer 12, while that in the previously known one
- Method provided pre-injector II 'for the cylinder 1 is omitted. Since, in this example, 28 teeth after the start detection E no synchronization pulse S has yet occurred, the next or the next pre-injector with a predetermined angular distance from the angular position at which the first pre-injector was emitted is delivered. As soon as the first synchronization pulse S has occurred, the sequence of the following pre-injectors can be determined again by the central control unit 1 in sequential injection mode.
Landscapes
- Engineering & Computer Science (AREA)
- 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)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10056862 | 2000-11-16 | ||
DE10056862A DE10056862C1 (de) | 2000-11-16 | 2000-11-16 | Verfahren zum Einspritzen von Kraftstoff während der Startphase einer Brennkraftmaschine |
PCT/DE2001/004313 WO2002040847A2 (de) | 2000-11-16 | 2001-11-15 | Verfahren zum einspritzen von kraftstoff während der startphase einer brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1336040A2 true EP1336040A2 (de) | 2003-08-20 |
EP1336040B1 EP1336040B1 (de) | 2005-08-03 |
Family
ID=7663546
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01996678A Expired - Lifetime EP1336040B1 (de) | 2000-11-16 | 2001-11-15 | Verfahren zum einspritzen von kraftstoff während der startphase einer brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
US (1) | US6880531B2 (de) |
EP (1) | EP1336040B1 (de) |
DE (2) | DE10056862C1 (de) |
WO (1) | WO2002040847A2 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10221393B4 (de) * | 2002-05-14 | 2005-12-22 | Siemens Ag | Vorrichtung und Verfahren zum Starten einer mehrzylindrigen Brennkraftmaschine |
DE10228147B3 (de) * | 2002-06-24 | 2004-01-22 | Siemens Ag | Verfahren zum Bestimmen der Start-Winkelposition einer Brennkraftmaschine |
US6931840B2 (en) * | 2003-02-26 | 2005-08-23 | Ford Global Technologies, Llc | Cylinder event based fuel control |
US8100822B2 (en) * | 2004-03-16 | 2012-01-24 | Macroplata Systems, Llc | Anoscope for treating hemorrhoids without the trauma of cutting or the use of an endoscope |
US7415348B1 (en) * | 2007-02-20 | 2008-08-19 | Gm Global Technology Operations, Inc. | Multiple injection blend for direct injected engines |
GB2461552A (en) * | 2008-07-03 | 2010-01-06 | Gm Global Tech Operations Inc | Method of starting an internal combustion engine |
DE102010028167A1 (de) * | 2010-04-23 | 2011-10-27 | W.O.M. World Of Medicine Ag | Invasives Instrument zur Bearbeitung von Gefäßen und ein Verfahren |
DE102010027213A1 (de) | 2010-07-15 | 2012-01-19 | Continental Automotive Gmbh | Verfahren und Steuergerät zum Steuern einer Brennkraftmaschine |
DE102010027215B4 (de) | 2010-07-15 | 2013-09-05 | Continental Automotive Gmbh | Verfahren und Steuergerät zum Steuern einer Brennkraftmaschine |
DE102010027214B4 (de) | 2010-07-15 | 2013-09-05 | Continental Automotive Gmbh | Verfahren und Steuergerät zum Steuern einer Brennkraftmaschine |
US11131567B2 (en) | 2019-02-08 | 2021-09-28 | Honda Motor Co., Ltd. | Systems and methods for error detection in crankshaft tooth encoding |
US11162444B2 (en) * | 2019-02-08 | 2021-11-02 | Honda Motor Co., Ltd. | Systems and methods for a crank sensor having multiple sensors and a magnetic element |
US11199426B2 (en) * | 2019-02-08 | 2021-12-14 | Honda Motor Co., Ltd. | Systems and methods for crankshaft tooth encoding |
US11181016B2 (en) | 2019-02-08 | 2021-11-23 | Honda Motor Co., Ltd. | Systems and methods for a crank sensor having multiple sensors and a magnetic element |
US11959820B2 (en) | 2021-03-17 | 2024-04-16 | Honda Motor Co., Ltd. | Pulser plate balancing |
CN112983666B (zh) * | 2021-03-26 | 2022-09-13 | 中国第一汽车股份有限公司 | 汽车快速启动方法、装置、设备及存储介质 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6069247A (ja) | 1983-09-27 | 1985-04-19 | Nissan Motor Co Ltd | 内燃機関の燃料噴射制御装置 |
DE3864829D1 (de) * | 1988-11-28 | 1991-10-17 | Siemens Ag | Verfahren zum einspritzen von kraftstoff in eine brennkraftmaschine. |
JPH03260344A (ja) * | 1990-03-08 | 1991-11-20 | Honda Motor Co Ltd | 内燃エンジンの制御方法 |
US5165373A (en) * | 1991-05-24 | 1992-11-24 | Cheng Dah Y | Electro-thermal pulsed fuel injector and system |
DE4304163A1 (de) * | 1993-02-12 | 1994-08-25 | Bosch Gmbh Robert | Einrichtung zur Steuerung der Kraftstoffeinspritzung bei einer Brennkraftmaschine |
US5450829A (en) * | 1994-05-03 | 1995-09-19 | Servojet Products International | Electronically controlled pilot fuel injection of compression ignition engines |
DE19741966C2 (de) * | 1997-09-23 | 2002-11-07 | Siemens Ag | Verfahren zum Einspritzen von Kraftstoff bei einer Mehrzylinderbrennkraftmaschine |
US6032640A (en) * | 1998-10-02 | 2000-03-07 | The University Of British Columbia | Control method for spark-ignition engines |
US6612292B2 (en) * | 2001-01-09 | 2003-09-02 | Nissan Motor Co., Ltd. | Fuel injection control for diesel engine |
-
2000
- 2000-11-16 DE DE10056862A patent/DE10056862C1/de not_active Expired - Fee Related
-
2001
- 2001-11-15 EP EP01996678A patent/EP1336040B1/de not_active Expired - Lifetime
- 2001-11-15 US US10/432,139 patent/US6880531B2/en not_active Expired - Lifetime
- 2001-11-15 DE DE50106997T patent/DE50106997D1/de not_active Expired - Lifetime
- 2001-11-15 WO PCT/DE2001/004313 patent/WO2002040847A2/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0240847A2 * |
Also Published As
Publication number | Publication date |
---|---|
EP1336040B1 (de) | 2005-08-03 |
WO2002040847A2 (de) | 2002-05-23 |
DE10056862C1 (de) | 2002-05-08 |
US6880531B2 (en) | 2005-04-19 |
US20040020472A1 (en) | 2004-02-05 |
WO2002040847A3 (de) | 2003-02-20 |
DE50106997D1 (de) | 2005-09-08 |
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