EP0314680A1 - Fuel injection process. - Google Patents
Fuel injection process.Info
- Publication number
- EP0314680A1 EP0314680A1 EP87903859A EP87903859A EP0314680A1 EP 0314680 A1 EP0314680 A1 EP 0314680A1 EP 87903859 A EP87903859 A EP 87903859A EP 87903859 A EP87903859 A EP 87903859A EP 0314680 A1 EP0314680 A1 EP 0314680A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- synchronization
- signals
- fuel injection
- opening
- phase
- 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
- F02D41/30—Controlling fuel injection
- F02D41/32—Controlling fuel injection of the low pressure type
- F02D41/36—Controlling fuel injection of the low pressure type with means for controlling distribution
- F02D41/365—Controlling fuel injection of the low pressure type with means for controlling distribution with means for controlling timing and distribution
-
- 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
Definitions
- the invention relates to a method for fuel injection according to the preamble of the main claim.
- the method for fuel injection according to the invention with the characterizing features of the main claim gives the advantage of quickly switching to sequential fuel injection.
- the fuel allocation takes place once per ignition over all one injection valves at the same time during a first phase, and is delayed by a time t1 to the reference signal and in a predefinable opening interval T1.
- the opening interval T1 is smaller than after the synchronization and depends in particular on the engine temperature, the speed and the number of cylinders. The result is an improved cold start behavior with minimization of fuel injection into open intake valves.
- FIG. 1 shows a time diagram with the signals for opening the injection valves of an internal combustion engine with six cylinders, the successive fuel injection taking place after the reference signal of the first cylinder has been recognized
- FIG. 2 shows a time diagram similar to FIG. 1, but in addition the synchronization also takes place after the fourth cylinder has been recognized.
- FIG. 1 shows the time diagram of the signals for opening the one-injection valves E1 to E6 of an internal combustion engine with six cylinders.
- the top line shows the reference marks or reference signals of the respective cylinders 1 to 6. It is known when starting the internal combustion engine or after If the synchronization between the internal combustion engine and the control unit, by means of which the fuel injection is carried out, a phase-correct fuel allocation is not possible. For example, assume that the reference signal B2 for the second cylinder occurs after starting the internal combustion engine. Here, as shown in the bottom line, the first ignition takes place. In a first phase a, an opening signal is now given once per ignition for all injection valves, and thus the fuel is allocated to all cylinders.
- the opening signals are delayed by a time t1 with respect to the reference signals B2 to Bö, which are synchronous to the crankshaft.
- the delay time t1 depends in particular on the engine temperature and the speed.
- the time period T1 of the opening signals is significantly shorter than the opening time T2 after synchronization has taken place.
- the opening time T1 is particularly dependent on the engine temperature, the speed and the number of cylinders. There is a minimization of the fuel injection in the open intake cylinder, whereby a good cold start behavior is achieved.
- the synchronization is recognized with the reference signal B1 for the first cylinder.
- the fuel injection is now gradually switched to sequential operation. During this phase of the changeover, fuel will continue to be allocated to the remaining cylinders in parallel until the first time their intake valves are closed.
- the sequential force Substance fine injections are delayed by the delay time t2 in relation to the associated reference signals B1 to B6.
- This delay time t2 and the opening time T2 depend in the usual way on the parameters to be taken into account for the fuel injection, in particular the engine speed, the load, the engine temperature, lambda and the acceleration.
- the sequential fuel injection takes place exclusively.
- the injections framed by dashed lines are made according to the invention in addition to the injections or openings of the valves after the first reference signal B2.
- FIG. 2 shows a special embodiment in which the synchronization takes place not only by recognizing the first cylinder, but also by recognizing the fourth cylinder.
- the synchronization thus begins considerably earlier, in this embodiment after the third ignition. Due to the rapid switching to sequential fuel injection, there is a further minimization of fuel injection into open intake valves.
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)
Abstract
Procédé d'injection de carburant dans un moteur à combustion interne multi-cylindres. En fonction de signaux de référence synchrones avec le vilebrequin, des signaux d'ouverture sont produits pour les soupapes injectrices respectives de chaque cylindre, toutes les soupapes injectrices étant d'abord actionnées ensemble après mise sous tension de l'allumage et les signaux d'ouverture en vue de l'injection séquentielle de carburant étant produits après la reconnaissance de la synchronisation. Le problème à résoudre est de pouvoir, après lancement du moteur ou après mauvais fonctionnement de la synchronisation, passer rapidement à l'injection séquentielle de carburant, la quantité de carburant injectée dans les soupapes d'admission ouvertes devant être réduite au minimum. On propose à cet effet que dans une phase (a) jusqu'à la reconnaissance de la synchronisation, au moins en cas de nouvel allumage, les signaux soient amenés, notamment simultanément, aux soupapes injectrices. De plus, dans une phase (b) suivant la reconnaissance de la synchronisation, les signaux d'ouverture sont amenés simultanément aux soupapes injectrices pour les cylindres n'étant pas encore passés au mode de fonctionnement séquentiel.Method of injecting fuel into a multi-cylinder internal combustion engine. According to reference signals synchronous with the crankshaft, opening signals are produced for the respective injector valves of each cylinder, all the injector valves being first actuated together after switching on the ignition and the signals of opening for sequential fuel injection being produced after recognition of synchronization. The problem to be solved is to be able, after starting the engine or after malfunctioning of the synchronization, to quickly switch to sequential fuel injection, the quantity of fuel injected into the open intake valves having to be reduced to the minimum. It is proposed for this purpose that in a phase (a) until recognition of the synchronization, at least in the event of a new ignition, the signals are brought, in particular simultaneously, to the injector valves. In addition, in a phase (b) following recognition of the synchronization, the opening signals are brought simultaneously to the injector valves for the cylinders which have not yet switched to the sequential operating mode.
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3623042 | 1986-07-09 | ||
DE19863623042 DE3623042A1 (en) | 1986-07-09 | 1986-07-09 | FUEL INJECTION METHOD |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0314680A1 true EP0314680A1 (en) | 1989-05-10 |
EP0314680B1 EP0314680B1 (en) | 1990-08-22 |
Family
ID=6304734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87903859A Expired - Lifetime EP0314680B1 (en) | 1986-07-09 | 1987-06-23 | Fuel injection process |
Country Status (5)
Country | Link |
---|---|
US (1) | US4941449A (en) |
EP (1) | EP0314680B1 (en) |
JP (1) | JPH01503248A (en) |
DE (2) | DE3623042A1 (en) |
WO (1) | WO1988000287A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5680846A (en) * | 1995-05-15 | 1997-10-28 | Siemens Aktiengesellschaft | Fuel injection method for multicylinder internal combustion engines |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0823333B2 (en) * | 1989-06-12 | 1996-03-06 | 株式会社日立製作所 | Ignition timing control device for internal combustion engine |
DE3923478C2 (en) * | 1989-07-15 | 2000-02-03 | Bosch Gmbh Robert | Sequential fuel injection with pre-spray |
US5088465A (en) * | 1991-05-24 | 1992-02-18 | Ford Motor Company | Fast start fueling for fuel injected spark ignition engine |
JPH05214985A (en) * | 1992-02-05 | 1993-08-24 | Fuji Heavy Ind Ltd | Fuel injection control method for engine |
DE4306252C1 (en) * | 1993-03-01 | 1994-05-19 | Daimler Benz Ag | Operating system for multi-cylinder engine with fuel injection - uses signal from pressure sensor for high pressure fuel supply line for emergency engine operating mode |
DE4317635A1 (en) * | 1993-05-27 | 1994-12-01 | Bosch Gmbh Robert | Method and device for changing from single-cylinder synchronous to sequential fuel injection |
JPH0932605A (en) * | 1995-07-24 | 1997-02-04 | Yamaha Motor Co Ltd | Control method and controller for timing when multi-cylinder internal combustion engine is started |
JP3858328B2 (en) * | 1997-03-31 | 2006-12-13 | トヨタ自動車株式会社 | Fuel injection control device for internal combustion engine |
FR2765628B1 (en) * | 1997-07-07 | 1999-09-10 | Siemens Automotive Sa | METHOD FOR INJECTING FUEL ON THE START OF AN INTERNAL COMBUSTION ENGINE |
JP2000179387A (en) * | 1998-12-15 | 2000-06-27 | Sanshin Ind Co Ltd | Fuel injection control unit |
DE10056863C1 (en) | 2000-11-16 | 2002-03-14 | Siemens Ag | Fuel injection method for start phase of multi-cylinder IC engine uses fuel pre-injection for providing wall film in each engine cylinder |
JP2013213445A (en) | 2012-04-02 | 2013-10-17 | Suzuki Motor Corp | Engine fuel injection device |
US10442986B2 (en) | 2016-05-31 | 2019-10-15 | Multi-Chem Group, Llc | Determining residual friction reducer concentrations for subterranean treatment fluids |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57203825A (en) * | 1981-06-10 | 1982-12-14 | Honda Motor Co Ltd | Controlling device for electronic fuel injection of multi cylinder internal-combustion engine |
JPS58167837A (en) * | 1982-03-30 | 1983-10-04 | Toyota Motor Corp | Control method of fuel injection in internal-combustion engine |
JPS5918248A (en) * | 1982-07-22 | 1984-01-30 | Nippon Denso Co Ltd | Fuel injection controlling method for internal combustion engine |
JPS59138734A (en) * | 1983-01-28 | 1984-08-09 | Hitachi Ltd | Engine controller |
JPS603456A (en) * | 1983-06-21 | 1985-01-09 | Honda Motor Co Ltd | Fuel feed controlling method for multicylinder internal-combustion engine |
JPS6181549A (en) * | 1984-09-25 | 1986-04-25 | Honda Motor Co Ltd | Fuel feed control method for multicylinder internal-combustion engine |
IT1184957B (en) * | 1985-06-04 | 1987-10-28 | Weber Spa | FUEL SUPPLY SYSTEM AT THE START OF AN ENDOTHERMAL ENGINE INCLUDING AN ELECTRONIC INJECTION SYSTEM |
-
1986
- 1986-07-09 DE DE19863623042 patent/DE3623042A1/en not_active Withdrawn
-
1987
- 1987-06-23 DE DE8787903859T patent/DE3764473D1/en not_active Expired - Lifetime
- 1987-06-23 US US07/301,752 patent/US4941449A/en not_active Expired - Fee Related
- 1987-06-23 JP JP62503587A patent/JPH01503248A/en active Pending
- 1987-06-23 WO PCT/DE1987/000281 patent/WO1988000287A1/en active IP Right Grant
- 1987-06-23 EP EP87903859A patent/EP0314680B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO8800287A1 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5680846A (en) * | 1995-05-15 | 1997-10-28 | Siemens Aktiengesellschaft | Fuel injection method for multicylinder internal combustion engines |
Also Published As
Publication number | Publication date |
---|---|
DE3764473D1 (en) | 1990-09-27 |
DE3623042A1 (en) | 1988-01-14 |
WO1988000287A1 (en) | 1988-01-14 |
US4941449A (en) | 1990-07-17 |
JPH01503248A (en) | 1989-11-02 |
EP0314680B1 (en) | 1990-08-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0314680A1 (en) | Fuel injection process. | |
DE69301280T2 (en) | Cylinder identification method for the control of an electronic injection system of an internal combustion engine | |
EP1590563B1 (en) | Method for controlling a direct injection of an internal combustion engine | |
EP0287580A1 (en) | Fuel injection device for internal combustion engines, in particular diesel engines. | |
EP0784745A1 (en) | Electronic control system for an internal combustion engine | |
DE4333617A1 (en) | Method and device for controlling fuel injection in a direct injection engine | |
DE10328834A1 (en) | Control device for an internal combustion engine and control method | |
WO2002040847A2 (en) | Method for injecting fuel during the starting phase of an internal combustion engine | |
AU629623B2 (en) | Process for reducing the fuel supply to an engine cylinder | |
EP0272290B2 (en) | Fuel metering process | |
WO2008080817A1 (en) | Method for starting an internal combustion engine | |
DE4121561C2 (en) | Ignition control system for an internal combustion engine with fuel injection | |
DE69208749T2 (en) | Fast start of fuel supply for an internal combustion engine | |
EP1336041B1 (en) | Method for injecting fuel during the start phase of an internal combustion engine | |
DE3923478C2 (en) | Sequential fuel injection with pre-spray | |
DE19741966C2 (en) | Method for injecting fuel in a multi-cylinder internal combustion engine | |
DE4418578B4 (en) | Device for detecting the phase position in an internal combustion engine | |
DE10342703A9 (en) | Method for starting a multi-cylinder internal combustion engine and internal combustion engine | |
DE3623040A1 (en) | Method of fuel injection | |
DE602004003358T2 (en) | METHOD FOR SYNCHRONIZING INJECTION WITH THE PHASE OF AN ENGINE WITH ELECTRONICALLY ASSEMBLED FUEL INJECTION NOZZLES | |
DE69107311T2 (en) | PISTON OF A PISTON INTERNAL COMBUSTION ENGINE. | |
DE4414906C1 (en) | Fuel injection method for a fuel-injected compression-ignition engine with secondary and primary injection | |
DE3836854C2 (en) | ||
EP1303692A1 (en) | Method for synchronizing an internal combustion engine | |
DE102014213034A1 (en) | Method for starting an internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19881126 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR IT |
|
17Q | First examination report despatched |
Effective date: 19900130 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR IT |
|
ET | Fr: translation filed | ||
REF | Corresponds to: |
Ref document number: 3764473 Country of ref document: DE Date of ref document: 19900927 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
ITTA | It: last paid annual fee | ||
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19980824 Year of fee payment: 12 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19990622 Year of fee payment: 13 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20000503 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010228 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20050623 |