WO1990002873A1 - Elektronische motorsteuerung mit funktionsprüfung für die zündungsendstufe - Google Patents
Elektronische motorsteuerung mit funktionsprüfung für die zündungsendstufe Download PDFInfo
- Publication number
- WO1990002873A1 WO1990002873A1 PCT/DE1989/000515 DE8900515W WO9002873A1 WO 1990002873 A1 WO1990002873 A1 WO 1990002873A1 DE 8900515 W DE8900515 W DE 8900515W WO 9002873 A1 WO9002873 A1 WO 9002873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- ignition
- engine
- sensor
- control according
- engine control
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P17/12—Testing characteristics of the spark, ignition voltage or current
-
- 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
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
-
- 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
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
-
- 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
- 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
- F02D2200/1015—Engines misfires
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
- F02P2017/003—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines using an inductive sensor, e.g. trigger tongs
Definitions
- the invention relates to an electronic engine control with a functional test for the ignition output stage in accordance with the preamble of the main claim.
- Electronic engine control systems which have a processor which controls engine operation taking into account various engine parameters.
- the optimal fuel injection quantity and the optimum ignition timing are determined as a function of engine speed, engine temperature, position of the foot control and taking engine characteristics or engine-specific maps into account.
- the motor parameters listed above are determined by suitable sensors.
- the engine speed can be determined, for example, on the camshaft, the engine temperature by means of a thermocouple, and the position of the foot control by a displacement sensor or indirectly by an angle sensor, which determines the position of the throttle valve.
- Such an engine control is known from DE-OS 35 41 731.
- an electronic engine control with the features of the main claim has the advantage that a failure of the ignition output stage is recognized and a corresponding fault detection is provided.
- the error detection can serve on the one hand to activate an error display.
- the fault detection is preferably used to switch off the gasoline injection, the gasoline injection remaining switched off until no further fault is detected and the fuel supply switched on again, taking into account the respective engine operating state.
- a further development of the invention provides that the fault detection is supplied to a counter as a counting pulse and that when a predetermined comparison counter reading is reached, the fuel injection is switched off.
- the comparison counter reading can be adapted to the exhaust system or to the design of the catalytic converter and the engine, so that, for example, the use of fuel is only switched off after five misfires detected in succession. If the presence of the correct ignition voltage on the ignition cable is ascertained after the fuel injection has been switched off, the counter is reset and the fuel injection is switched on again. However, this preferably only takes place under the condition that an overrun cut-off is immediately me of the pedestrian was determined.
- This condition has the advantage that no sudden switching on of the fuel injection and thus an unexpected acceleration is triggered.
- the fuel injection is switched on in the overrun fuel cut-off operating state, the fuel injection is released, but initially fuel is not injected as long as the fuel cut-off operating state is maintained. The normal fuel injection then takes place only after the foot pedal is actuated again.
- An inductive sensor is preferably arranged in the region of an ignition cable leading to a spark plug, the sensor output signal of which is converted into a rectangular pulse by means of a signal converter. This rectangular pulse can then be digitally processed directly in the processor.
- each ignition output stage is assigned a sensor and a counter so that a function test can be carried out separately for each ignition output stage.
- FIG. 1 shows the basic structure of the motor control
- Figure 2 is a circuit diagram of the engine control with an ignition output stage
- FIG. 3 shows a functional diagram of that in FIG. 1 and FIG. Gur 2 shown engine control.
- FIG. 1 shows the basic structure of a motor control with a functional test for the ignition output stage.
- a sensor 1 that is associated with an ignition cable 2 / output side outputs from a sensor output signal SO at occurrence of an ignition voltage.
- the sensor output signal SO is converted into a square-wave signal SI and fed to the input of a motor control 4.
- the engine control system in turn controls the injection system 5 and the ignition 6 of an internal combustion engine.
- the sensor 1 can be arranged on the cable 30 between the ignition coil 11 and the distributor 9. If the position of the distributor finger 9 or the crankshaft is known, the occurrence of an ignition voltage for each spark plug 8 can be determined in a cylinder-specific manner by means of a single sensor. If no value is placed on a cylinder-specific determination, the crankshaft position or the position of the distributor finger 9 need not be known. Here it is sufficient to observe the type of sensor signals SO.
- Engine-specific characteristic curves and / or characteristic maps are stored in the engine control system and are taken into account by the engine control system for the control tasks.
- the control of engine operation on the basis of the characteristic curves and maps is known per se and is not the subject of the present invention, which is why a more detailed description of the implementation of the engine control is not dealt with here.
- FIG. 2 shows a more detailed block diagram with ignition devices.
- An inductive sensor 1 encloses the ignition cable 2, which leads from an output of an ignition distributor 7 to a spark plug 8 or the cable 30.
- the ignition distributor 7 has a total of six outputs AI to A6, each leading to a spark plug.
- a distributor finger 9 rotating in the direction of the arrow connects the outputs AI to A6 in succession to the output 10 of an ignition coil 11, which is activated by an ignition output stage 12.
- the sensor 1 In the event of an ignition voltage appearing on the ignition cable 2 or on the cable 30, the sensor 1 outputs a sensor output signal SO to a filter 13, the output of which is connected to the input of a rectifier 14.
- the output signal of the rectifier 14 is fed to the positive input of a differential amplifier 15, at the negative input of which a threshold value voltage Us is present. If the output signal of the rectifier 14 exceeds the voltage value of the threshold voltage Us, a positive voltage occurs at the output of the differential amplifier 15 until the output signal of the rectifier 14 drops below the value of the threshold voltage Us again.
- a square-wave signal SI occurs at the output of the differential amplifier 15 whenever a sensor output signal SO occurs.
- the filter 13, the rectifier 14 and the differential amplifier 15 together form the signal converter 3, as shown in FIG. 1.
- the square-wave signal SI is fed to an input of a processor CPU, which checks whether a square-wave signal SI also arrives when an ignition voltage is triggered via the ignition output stage 12. Since in the present exemplary embodiment a sensor 1 is only arranged at the ignition distributor output A2, this check is only carried out when the distributor finger 9 is in the position shown.
- a counter Z connected to the processor CPU is increased by 1 with respect to its counter reading.
- the current count is stored in a memory RAM connected to the counter Z and to the processor CPU.
- the Memory RAM is battery-buffered, that is to say that a battery B backs up the memory content even if the supply voltage to the motor controller fails or is switched off.
- the processor 16 is connected, in which a comparison counter reading is stored, which is continuously compared in the processor with the current counter reading for agreement. As soon as a match is found between the comparison counter reading and the current counter reading, the processor outputs an error detection to the battery-buffered memory 17.
- the fuel injection is switched off simultaneously with the fault detection. This takes place in that the injection output stage 18, which is controlled by the processor CPU, is switched off, so that no more fuel K is injected into the combustion chamber of the engine by means of the injection nozzle 19 connected downstream of it.
- the injection output stage 18 can be activated again, whereby this should take place under the condition that a release or activation of the injection output stage 18 after an error detection only in the loading operating state "overrun cut-off".
- the processor carries out a recurring routine which begins by first checking whether a sensor output signal SO is present. In the event of a fault in the ignition output stage 12 or the ignition devices 11, 7 connected downstream of it, the sensor output signal is missing, which results in an incrementation of the counter Z. Thereupon will , the current counter reading is compared with the permanently stored, predetermined comparison counter reading. If this question is answered in the negative, the next cycle will be the
- an identifier which is usually referred to as a flag, acts in the battery-buffered memory 17.
- test routine is continued and the injection shutdown remains until the start of the fifth test cycle that a sensor output signal SO is present. Now the content of the memory 17 is first checked to see whether a flag is set. If so, the injection is switched on again and the flag is cleared, but only when the operating state "overrun cut-off" 1 is ascertained, so that the driver does not experience an unexpected sudden acceleration.
- the counter 17 is reset or set to 0.
- test routine 0 cannot run or be ineffective, for example if a predetermined minimum engine temperature has not yet been reached. It can also be provided that no test routine is carried out during the engine starting phase. Depending on the requirements, an interruption of the test routine can be provided during the overrun cutoff and / or during an acceleration enrichment.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1508336A JPH07502316A (ja) | 1988-09-02 | 1989-08-05 | 点火終段のための動作検査機能を有する電子エンジン制御装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3829797A DE3829797A1 (de) | 1988-09-02 | 1988-09-02 | Elektronische motorsteuerung mit funktionspruefung fuer die zuendungsendstufe |
DEP3829797.3 | 1988-09-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1990002873A1 true WO1990002873A1 (de) | 1990-03-22 |
Family
ID=6362124
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1989/000515 WO1990002873A1 (de) | 1988-09-02 | 1989-08-05 | Elektronische motorsteuerung mit funktionsprüfung für die zündungsendstufe |
Country Status (5)
Country | Link |
---|---|
US (1) | US5159912A (de) |
EP (1) | EP0432176A1 (de) |
JP (1) | JPH07502316A (de) |
DE (1) | DE3829797A1 (de) |
WO (1) | WO1990002873A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5336434A (en) * | 1989-10-02 | 1994-08-09 | Allergan, Inc. | Methods, compositions and apparatus to disinfect lenses |
US5400760A (en) * | 1992-09-11 | 1995-03-28 | Ngk Spark Plug Co., Ltd. | Misfire detector device for internal combustion engine |
DE4338740C1 (de) * | 1993-11-12 | 1995-01-26 | Bosch Gmbh Robert | Verfahren zum Reduzieren der Abgasemissionen beim Abstellen von Brennkraftmaschinen |
US5715161A (en) * | 1993-12-28 | 1998-02-03 | Hyundai Motor Company | System and method for eliminating error code of an automatic transmission and related control |
US5383350A (en) * | 1994-01-13 | 1995-01-24 | Gas Research Institute | Sensor and method for detecting misfires in internal combustion engines |
US5622053A (en) * | 1994-09-30 | 1997-04-22 | Cooper Cameron Corporation | Turbocharged natural gas engine control system |
US6418324B1 (en) | 1995-06-01 | 2002-07-09 | Padcom, Incorporated | Apparatus and method for transparent wireless communication between a remote device and host system |
US6392315B1 (en) * | 1999-04-05 | 2002-05-21 | Delphi Technologies, Inc. | Compensation circuit for an automotive ignition sensing system |
US20040236495A1 (en) * | 2003-05-22 | 2004-11-25 | Robert Koenen | Data analysis system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033939A2 (de) * | 1980-02-06 | 1981-08-19 | Fialla, Dieter | Vorrichtung zur Regelung der Brennstoffzufuhr zu Verbrennungsmotoren über die Leerlaufdüse |
US4366794A (en) * | 1980-04-08 | 1983-01-04 | Nippondenso Co., Ltd. | Fuel injection control method for internal combustion engines |
US4503822A (en) * | 1981-08-13 | 1985-03-12 | Toyota Jidosha Kabushiki Kaisha | Electronic engine control system |
US4512316A (en) * | 1982-10-01 | 1985-04-23 | Fuji Jukogyo Kabushiki Kaisha | Fuel injection system for an internal combustion engine |
EP0171523A2 (de) * | 1984-05-24 | 1986-02-19 | Dante Chierico | Elektronische Einrichtung, auf einen Benzin oder Gas brauchenden Kraftfahrzeug, zu montieren bestimmt |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4117807A (en) * | 1977-02-02 | 1978-10-03 | The Bendix Corporation | Fuel injection cut off means for over temperature protection of exhaust treatment device |
JPS5337241A (en) * | 1977-09-30 | 1978-04-06 | Automob Antipollut & Saf Res Center | Mis-spark detecting system |
JPS60198377A (ja) * | 1984-03-21 | 1985-10-07 | Nippon Kokan Kk <Nkk> | 火花点火機関の失火監視装置 |
US4887574A (en) * | 1987-04-21 | 1989-12-19 | Hitachi, Ltd. | Control apparatus for internal combustion engines |
US4918389A (en) * | 1988-06-03 | 1990-04-17 | Robert Bosch Gmbh | Detecting misfiring in spark ignition engines |
JPH02104978A (ja) * | 1988-10-13 | 1990-04-17 | Mitsubishi Electric Corp | 内燃機関の失火検出装置 |
-
1988
- 1988-09-02 DE DE3829797A patent/DE3829797A1/de not_active Withdrawn
-
1989
- 1989-08-05 US US07/654,647 patent/US5159912A/en not_active Expired - Fee Related
- 1989-08-05 JP JP1508336A patent/JPH07502316A/ja active Pending
- 1989-08-05 EP EP19890908813 patent/EP0432176A1/de not_active Ceased
- 1989-08-05 WO PCT/DE1989/000515 patent/WO1990002873A1/de not_active Application Discontinuation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0033939A2 (de) * | 1980-02-06 | 1981-08-19 | Fialla, Dieter | Vorrichtung zur Regelung der Brennstoffzufuhr zu Verbrennungsmotoren über die Leerlaufdüse |
US4366794A (en) * | 1980-04-08 | 1983-01-04 | Nippondenso Co., Ltd. | Fuel injection control method for internal combustion engines |
US4503822A (en) * | 1981-08-13 | 1985-03-12 | Toyota Jidosha Kabushiki Kaisha | Electronic engine control system |
US4512316A (en) * | 1982-10-01 | 1985-04-23 | Fuji Jukogyo Kabushiki Kaisha | Fuel injection system for an internal combustion engine |
EP0171523A2 (de) * | 1984-05-24 | 1986-02-19 | Dante Chierico | Elektronische Einrichtung, auf einen Benzin oder Gas brauchenden Kraftfahrzeug, zu montieren bestimmt |
Also Published As
Publication number | Publication date |
---|---|
EP0432176A1 (de) | 1991-06-19 |
DE3829797A1 (de) | 1990-03-15 |
US5159912A (en) | 1992-11-03 |
JPH07502316A (ja) | 1995-03-09 |
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