EP0764777B1 - Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine - Google Patents
Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine Download PDFInfo
- Publication number
- EP0764777B1 EP0764777B1 EP96110218A EP96110218A EP0764777B1 EP 0764777 B1 EP0764777 B1 EP 0764777B1 EP 96110218 A EP96110218 A EP 96110218A EP 96110218 A EP96110218 A EP 96110218A EP 0764777 B1 EP0764777 B1 EP 0764777B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- internal combustion
- metered
- combustion engine
- fault
- 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.)
- Expired - Lifetime
Links
Images
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
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
- F02D2041/223—Diagnosis of fuel pressure sensors
Definitions
- the invention relates to a method and a device for controlling an internal combustion engine according to the generic terms of independent claims.
- Such a method and such a device for control an internal combustion engine are known.
- a safety shut-off valve is provided that in the event of a fault a safety shutdown is guaranteed.
- Such one Safety shutoff valve is used in diesel internal combustion engines referred to as ELAB.
- DE 43 44 190 A1 is a Fuel injector with high pressure accumulator known.
- the memory injection system is with a High pressure fuel pump for continuous filling a high-pressure fuel accumulator.
- downstream of the fuel storage are via lines Injectors on the internal combustion engine with fuel provided.
- Injectors differential pressure and / or flow-controlled check valves upstream.
- the Check valves block the fuel supply safe if an injector fails.
- the invention has for its object in a method and a device for controlling an internal combustion engine a safety shutdown of the type mentioned to ensure the fastest possible shutdown guaranteed. This task is carried out in the Features characterized independent claims solved.
- the procedure according to the invention has the advantage that Fast shutdown even with so-called common rail systems is possible in the event of an error. At the same time, the Pressure in the high pressure section is quickly reduced in the event of a fault. The The usual shut-off valve and its control can be omitted, which means a considerable saving in costs. On Test of the facility is not necessary as this is through normal operation is ensured.
- FIG. 1 shows an injection system according to the invention and Figure 2 different Injection pulses plotted over time.
- the device according to the invention is based on the example a self-igniting internal combustion engine, where the fuel metering by means of a solenoid valve is controlled.
- the embodiment shown in Figure 1 relates to a so-called common rail system.
- the invention Approach is not on these systems limited.
- suction line 105 receives fresh air and emits 110 exhaust gases via an exhaust line.
- the internal combustion engine shown is a four-cylinder internal combustion engine. Every cylinder the Internal combustion engine is an injector 120, 121, 122 and 123 assigned. The injectors are connected via solenoid valves 130, 131, 132 and 133 fuel metered. The fuel arrives from a so-called rail 135 via the injectors 120, 121, 122 and 123 into the cylinders of internal combustion engine 100.
- the fuel in the rail 135 is from a high pressure pump 145 brought to an adjustable pressure.
- the high pressure pump 145 is via a solenoid valve 150 with a fuel delivery pump 155 connected.
- the fuel delivery pump 155 communicates with a fuel tank 160.
- the valve 150 comprises a coil 152.
- the solenoid valves 130, 131, 132 and 133 include coils 140, 141, 142 and 143 that be supplied with current by means of an output stage 175 can.
- the output stage 175 is preferably in a control unit 170 arranged, which corresponds to the coil 152 controls.
- a sensor 177 is provided, which the pressure in Rail 135 detects and a corresponding signal to the control unit 170 directs.
- An error detection 176 evaluates various signals and in the event of a fault, the power amplifier 175 and the valve 152 with a corresponding signal.
- each Flow restrictors 180, 181, 182 and 183 arranged there is between the rail 135 and the injectors 120 to 123 each Flow restrictors 180, 181, 182 and 183 arranged.
- the flow limiter can also between the solenoid valve and the rail or between the solenoid valve and the respective injector his.
- the flow restrictors are designed such that the connection between the Rail 135 and the injectors interrupt if more than one through this line predetermined amount of fuel flows.
- the flow restrictor closes when a particular one Amount of fuel would be metered. That amount is like that chosen that it is larger than the largest in the error-free Operation occurring quantity. It is therefore larger than that Full load quantity or the start quantity.
- the crowd is also like this chosen to be less than the amount at which the Internal combustion engine is damaged.
- the fuel delivery pump 155 delivers the fuel from the reservoir via valve 150 to high pressure pump 145.
- the high pressure pump 145 builds a predefinable pressure in the rail 135 on.
- Pressure values of about 10 to 2000 bar achieved.
- the corresponding Solenoid valves 130 to 133 controlled.
- the procedure according to the invention is now as follows. Recognize that Error monitoring 175 an error, the error monitoring switches 175 to an emergency driving program. This means, that the valve 150 is brought into its closed state becomes. This ensures that no more fuel is provided by the fuel pump 155. As another Measure will be the solenoid valves 140, 141, 142 and 143 controlled so that they the fuel metering release in an angular position of the crankshaft, in the the injection makes no contribution to the torque of the internal combustion engine supplies. It is particularly advantageous if the fuel metering in the area of bottom dead center is released. This means the fuel metering takes place immediately before opening the exhaust valves Internal combustion engine.
- the fuel metering is carried out as large as possible Angular range, so that the injected amount a larger Assumes value as the amount that high pressure pump 145 delivers.
- Figure 2a are the angular ranges at which the fuel metering usually done by crankshaft degrees applied.
- the fuel is usually metered in the area of the top dead center OT of the respective cylinder.
- the duration of the metering is between 0 ° and 40 ° crankshaft.
- FIG. 2b The situation in the event of a fault is plotted in FIG. 2b.
- the injection now takes place in the area of bottom dead center UT, the duration of the injection being essential is longer than in normal operation.
- the duration in the event of an error the injection is chosen so that by the injector flowing fuel takes such a value that address the flow restrictor and thereby the other Cut off the fuel supply to the cylinders.
- the Amount at which the flow limiters respond so too choose that this quantity does not damage the Internal combustion engine occurs.
- the injection for emergency shutdown is preferably carried out outside the compression stroke, that is, between 0 degrees Crankshaft and 270 degree crankshaft. As particularly cheap was the angular range from approx. 100 ° to 200 ° crankshaft recognized after top dead center.
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)
- Fuel-Injection Apparatus (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19535418 | 1995-09-23 | ||
DE19535418 | 1995-09-23 | ||
DE19605417 | 1996-02-14 | ||
DE19605417 | 1996-02-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0764777A2 EP0764777A2 (de) | 1997-03-26 |
EP0764777A3 EP0764777A3 (de) | 1998-12-23 |
EP0764777B1 true EP0764777B1 (de) | 2003-03-19 |
Family
ID=26018872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96110218A Expired - Lifetime EP0764777B1 (de) | 1995-09-23 | 1996-06-25 | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0764777B1 (ja) |
JP (1) | JP4071838B2 (ja) |
KR (1) | KR100413711B1 (ja) |
DE (2) | DE59610232D1 (ja) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2762358B1 (fr) * | 1997-04-16 | 1999-07-09 | Peugeot | Dispositif de controle du fonctionnement d'un moteur diesel, notamment de vehicule automobile |
JP3713918B2 (ja) * | 1997-08-29 | 2005-11-09 | いすゞ自動車株式会社 | エンジンの燃料噴射方法及びその装置 |
DE19945375A1 (de) * | 1999-09-22 | 2001-03-29 | Opel Adam Ag | Verfahren zur Steuerung der Kraftstoffeinspritzung bei einer direkt einspritzenden Dieselbrennkraftmaschine |
JP4343762B2 (ja) * | 2004-05-12 | 2009-10-14 | 三菱電機株式会社 | 内燃機関の燃料噴射制御装置 |
JP4221332B2 (ja) * | 2004-05-12 | 2009-02-12 | 三菱電機株式会社 | 内燃機関の燃料噴射制御装置 |
CN100422526C (zh) * | 2005-06-23 | 2008-10-01 | 通用汽车环球科技运作公司 | 动态发动机泵气功的估计算法 |
JP4922906B2 (ja) * | 2007-12-10 | 2012-04-25 | 日立オートモティブシステムズ株式会社 | 内燃機関の高圧燃料供給装置および制御装置 |
DE102008001444A1 (de) | 2008-04-29 | 2009-11-05 | Robert Bosch Gmbh | Verfahren zum Bestimmen eines Überdrucks in einem Kraftstoffspeicher eines Einspritzsystems einer Brennkraftmaschine |
EP2123890A1 (en) * | 2008-05-21 | 2009-11-25 | GM Global Technology Operations, Inc. | A method and system for controlling operating pressure in a common-rail fuel injection system, particularly for a diesel engine |
JP4909973B2 (ja) | 2008-11-14 | 2012-04-04 | 日立オートモティブシステムズ株式会社 | 内燃機関の制御装置 |
JP5273310B2 (ja) * | 2011-05-13 | 2013-08-28 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
KR20150036030A (ko) * | 2012-07-12 | 2015-04-07 | 바르질라 스위츠랜드 리미티드 | 결함 인젝터의 제어 방법 |
JP6303944B2 (ja) * | 2014-09-16 | 2018-04-04 | 株式会社デンソー | 燃料噴射制御装置 |
DE102019208018A1 (de) * | 2019-05-31 | 2020-12-03 | Robert Bosch Gmbh | Verfahren zum Erkennen eines leckagebehafteten Kraftstoffinjektors |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3033214B2 (ja) * | 1991-02-27 | 2000-04-17 | 株式会社デンソー | 複数の燃料圧送手段による蓄圧式燃料供給方法及び装置と、複数の流体圧送手段を有する機器における異常判断装置 |
DE4229409C2 (de) * | 1992-09-03 | 2003-06-18 | Bayerische Motoren Werke Ag | Sicherheitseinrichtung zum selbsttätigen Abschalten einer Kraftstoffpumpe einer Brennkraftmaschine |
DE4344190A1 (de) * | 1993-12-23 | 1995-06-29 | Orange Gmbh | Kraftstoffeinspritzvorrichtung mit Hochdruck-Kraftstoffspeicher |
-
1996
- 1996-06-25 EP EP96110218A patent/EP0764777B1/de not_active Expired - Lifetime
- 1996-06-25 DE DE59610232T patent/DE59610232D1/de not_active Expired - Lifetime
- 1996-08-08 JP JP21013796A patent/JP4071838B2/ja not_active Expired - Fee Related
- 1996-09-07 DE DE19636397A patent/DE19636397A1/de not_active Withdrawn
- 1996-09-20 KR KR1019960041020A patent/KR100413711B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE19636397A1 (de) | 1997-03-27 |
KR100413711B1 (ko) | 2004-03-30 |
JPH09112319A (ja) | 1997-04-28 |
JP4071838B2 (ja) | 2008-04-02 |
EP0764777A2 (de) | 1997-03-26 |
KR970016070A (ko) | 1997-04-28 |
DE59610232D1 (de) | 2003-04-24 |
EP0764777A3 (de) | 1998-12-23 |
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