EP0795077A1 - Verfahren und vorrichtung zur überwachung eines kraftstoffzumesssystems - Google Patents
Verfahren und vorrichtung zur überwachung eines kraftstoffzumesssystemsInfo
- Publication number
- EP0795077A1 EP0795077A1 EP96913445A EP96913445A EP0795077A1 EP 0795077 A1 EP0795077 A1 EP 0795077A1 EP 96913445 A EP96913445 A EP 96913445A EP 96913445 A EP96913445 A EP 96913445A EP 0795077 A1 EP0795077 A1 EP 0795077A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- pressure
- signal
- detected
- fuel
- 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
- F02D41/22—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
- 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
- F02D41/3827—Common rail control systems for diesel engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/025—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining temperatures inside the cylinder, e.g. combustion temperatures
-
- 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
- F02D41/221—Safety or indicating devices for abnormal conditions relating to the failure of actuators or electrically driven elements
-
- 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
- F02D2041/224—Diagnosis of the fuel system
-
- 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
- F02D2200/0602—Fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/31—Control of the fuel pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder 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
- F02D41/30—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
Definitions
- the invention relates to a method and a device for monitoring a fuel metering system according to the preambles of the independent claims.
- the invention is based on the object of being able to detect faults as reliably and simply as possible in a device and a method for monitoring a fuel metering system of the type mentioned at the outset. This object is achieved by the features characterized in the independent claims.
- errors in the metering system can be reliably and easily identified.
- defective injectors can be reliably detected in common rail systems.
- DE-OS 44 40 700 a method is known in which, in the event of an accident, which is detected by means of an airbag sensor, an electromagnetic high-pressure regulator on the downstream side of the
- High pressure line opens completely. This leads to a pressure drop in the high pressure part of the fuel metering device.
- FIG. 1 shows a block diagram of the device according to the invention and FIGS. 2, 3 and 4 each show a flow diagram of an embodiment of the method according to the invention.
- the device according to the invention is illustrated below using the example of a self-igniting internal combustion engine in which the fuel metering is controlled by means of a solenoid valve.
- the one shown in Figure 1 is illustrated below using the example of a self-igniting internal combustion engine in which the fuel metering is controlled by means of a solenoid valve. The one shown in Figure 1
- Embodiment relates to a so-called common rail system.
- the procedure according to the invention is not restricted to these systems. It can be used in all systems in which a corresponding fuel metering is carried out.
- 100 denotes an internal combustion engine which is supplied with fresh air via an intake line 105 and emits exhaust gases via an exhaust line 110.
- the internal combustion engine shown is a four-cylinder internal combustion engine.
- An injector 120, 121, 122 and 123 is assigned to each cylinder of the internal combustion engine.
- Fuel is metered into the injectors via solenoid valves 130, 131, 132 and 133.
- the fuel passes from a so-called rail 135 via the injectors 120, 121, 122 and 123 into the cylinders of the internal combustion engine 100.
- the fuel in the rail 135 is brought to an adjustable pressure by a high-pressure pump 145.
- High-pressure pump 145 is connected to a fuel delivery pump 155 via a solenoid valve 150.
- the fuel delivery pump communicates with a fuel reservoir 160.
- the valve 150 comprises a coil 152.
- the solenoid valves 130, 131, 132 and 133 contain coils 140, 141, 142 and 143, each of which can be supplied with current by means of an output stage 175.
- the output stage 175 is preferably arranged in a control unit 170, which also controls the coil 152.
- a sensor 177 is provided, which detects the pressure in the rail 135 and sends a corresponding signal to the control unit 170.
- sensors are designated that detect the temperature in the combustion chambers of the individual cylinders. These sensors are connected to a control unit 180 which applies a signal to the controller 170.
- the control unit can be designed as an independent control unit. However, it can also be integrated in the controller 170.
- a pressure regulating valve or a pressure limiting valve 190 is arranged between the high pressure pump 145 and the rail 135.
- the pressure relief valve 190 is arranged between the connecting line between the high pressure pump 145 and the rail 135 and a return line 195. Fuel returns to the storage container 160 via the return line 195.
- the pressure control valve can be controlled by the control 170 and, when a corresponding control signal is present, releases the connection between the rail 135 and the return line 195 and thus the storage container 160.
- the sensors 181 to 184 are designed as pressure sensors. These sensors record the combustion chamber pressure in the combustion chambers of the individual cylinders.
- the fuel feed pump 155 delivers the fuel from the reservoir via the valve 150 to the high-pressure pump 145.
- the high-pressure pump 145 builds a rail 135 predefinable pressure on. Pressure values greater than 800 bar are usually achieved in Rail 135.
- the corresponding solenoid valves 130 to 133 are activated.
- the control signals for the coils determine the start of injection and the end of injection of the fuel by injectors 120 to 123.
- the control signals are determined by the control unit depending on various operating conditions, such as the driver's request, the speed and other variables.
- Example occur if the solenoid valve is permanently energized or the injector is stuck or has a leak. This can lead to an undesired increase in pressure in a cylinder and can even lead to engine destruction if the cylinder tip pressures or the permissible temperatures are exceeded.
- the temperature in the combustion chamber of each engine cylinder is measured using sensors 181 to 184. If the temperature of one of the cylinders exceeds a predetermined one
- Threshold the fuel supply is throttled or switched off or other emergency driving measures are initiated.
- the senor is integrated in the glow plug. This has the advantage that no additional drilling in the engine is required. It when the electrical resistance of the glow plug is used as a temperature signal is particularly advantageous. This resistance changes by a factor of 2 to 4 in the temperature range 0 to 1100 ° C. Alternatively, the Thermal effect of the glow plugs can be evaluated to provide a temperature signal.
- the target temperature in the combustion chamber is saved depending on the target fuel quantity and the engine speed N. This setpoint temperature is compared with the temperature measured in the combustion chamber. If the actual temperature in the combustion chamber exceeds ts by more than a temperature difference ⁇ for longer than a time, an error is recognized and the amount of fuel is greatly reduced or switched off.
- the amount of fuel can be influenced before an engine failure or the amount of fuel can be reduced before the vehicle accelerates unintentionally. If only engine damage is to be prevented, it is sufficient in a simplified embodiment to store the target temperature as a function of the speed.
- step 200 a counter t is set to zero. Then in step 210, the current combustion chamber temperature TI, the fuel quantity QKS and speed N are recorded. All fuel quantity signals present in the controller 170, such as, for example, the target or the actual fuel quantity, can be used as the fuel quantity QKS.
- step 220 the setpoint temperature becomes the map
- the query 230 checks whether the amount of the difference between the actual temperature TI and the target temperature Ts is less than ⁇ . If this is the case, step 210 follows again. If this is not the case, ie the actual temperature deviates significantly from the target temperature, the time counter t is increased by 1 in step 240. The query 250 checks whether the time counter t is greater than or equal to a threshold value ts. If this is not the case, step 210 follows again. If this is the case, an error is recognized in step 260 and appropriate measures are initiated.
- step 300 the temperature signal of the first
- Cylinder ZI detected. Accordingly, the temperature signal of the second cylinder Z2 is detected in step 300. In steps 302 and 303, the temperature signal of the cylinders Z3 and Z4 is detected. In step 310, the amplitudes of the four signals are summed up and divided by 4. This results in the mean value M of the four temperature signals.
- step 320 a counter i is set to 0 and increased by 1 in the subsequent step 330.
- the query 340 checks whether the difference between the values Zi of the i-th cylinder and the mean value M is greater than a threshold value S. If this is not the case, query 350 checks whether i is greater than or equal to 4. If this is not the case, step 330 takes place again, or if i is greater than or equal to 4, step 300 follows. 97/12137 PC17DE96 / 00749
- query 340 recognizes that the amount of the difference between the values of the i-th cylinder Zi and the mean value M is greater than the threshold value S, then errors are recognized in step 360 and appropriate measures are initiated.
- the illustrated method was described using the example of a four-cylinder internal combustion engine. By appropriate selection of the parameters, in particular i, the method can also be applied to internal combustion engines with a different number of cylinders.
- a check is carried out to determine whether the temperature increases by more than a tolerance value within a predefinable period.
- a corresponding exemplary embodiment is shown as a flow chart in FIG.
- a time counter t is set to zero.
- one of the temperature sensors 181 to 184 detects a temperature value Z (k) of the combustion chamber temperature.
- the time counter is then incremented by one in step 420.
- the subsequent query 430 checks whether a waiting time tw has expired. If this is not the case, step 420 follows again.
- Step 450 forms the difference ZA between the old value Z (k) and the new value Z (k + 1).
- This difference ZA is a measure of the temperature rise during the waiting time tw.
- the subsequent query 460 checks whether the difference ZA is greater than a threshold value SA. Is this not the case, the old value Z (k) is overwritten with the new value Z (k + 1) in step 470. Step 420 then follows. If query 460 recognizes that the temperature rise is greater than a permissible value, step 480 detects errors.
- the device recognizes both an increased and a reduced injection quantity.
- the pressure in the rail is reduced by means of a pressure limiting valve. Furthermore, by shutting off the valve 150, the fuel supply to the high-pressure pump 145 can be prevented.
- the pressure in the rail can be set to a value just above the opening pressure of the nozzles.
- a separate high pressure pump, a separate rail and a separate pressure relief valve is used.
- only the cylinder group in which a combustion chamber with an excessively high temperature was diagnosed can be switched off. With the second Emergency operation can be maintained in the cylinder group.
- a particularly advantageous alternative is obtained if, instead of or in addition to the temperature sensors 181 to 184, at least one pressure sensor is used which delivers a signal which corresponds to the pressure in the respective combustion chamber. The error detection takes place accordingly, as with the temperature measurement. Instead of the temperature signals, pressure signals are processed.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19536109 | 1995-09-28 | ||
DE19536109A DE19536109A1 (de) | 1995-09-28 | 1995-09-28 | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems |
PCT/DE1996/000749 WO1997012137A1 (de) | 1995-09-28 | 1996-04-24 | Verfahren und vorrichtung zur überwachung eines kraftstoffzumesssystems |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0795077A1 true EP0795077A1 (de) | 1997-09-17 |
EP0795077B1 EP0795077B1 (de) | 2001-10-04 |
Family
ID=7773435
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96913445A Expired - Lifetime EP0795077B1 (de) | 1995-09-28 | 1996-04-24 | Verfahren und vorrichtung zur überwachung eines kraftstoffzumesssystems |
Country Status (6)
Country | Link |
---|---|
US (1) | US5816220A (de) |
EP (1) | EP0795077B1 (de) |
JP (1) | JPH10512345A (de) |
KR (1) | KR980700509A (de) |
DE (2) | DE19536109A1 (de) |
WO (1) | WO1997012137A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108730054A (zh) * | 2017-04-20 | 2018-11-02 | 福特环球技术公司 | 用于表征进气道燃料喷射器的方法和系统 |
Families Citing this family (36)
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US6002252A (en) | 1991-05-22 | 1999-12-14 | Wolff Controls Corporation | Compact sensing apparatus having transducer and signal conditioner with a plurality of mounting pins |
DE19626690B4 (de) * | 1996-07-03 | 2008-12-11 | Robert Bosch Gmbh | Verfahren und Vorrichtung zur Überwachung eines Kraftstoffzumeßsystems einer Brennkraftmaschine |
DE19651671C2 (de) * | 1996-12-12 | 2001-10-04 | Daimler Chrysler Ag | Steuerung einer Einspritzanlage für eine mehrzylindrige Brennkraftmaschine |
JP3695046B2 (ja) * | 1997-02-07 | 2005-09-14 | 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 |
US6220217B1 (en) * | 1997-08-11 | 2001-04-24 | Sanshin Kogyo Kabushiki Kaisha | Fuel supply system for direct injected system for engines |
US6763807B1 (en) * | 1997-11-28 | 2004-07-20 | Clean Fuel Technology, Inc. | Apparatus and method for controlling a fuel injector assembly of an internal combustion engine during cold operation thereof |
US6076504A (en) * | 1998-03-02 | 2000-06-20 | Cummins Engine Company, Inc. | Apparatus for diagnosing failures and fault conditions in a fuel system of an internal combustion engine |
AU4698799A (en) * | 1998-06-23 | 2000-01-10 | H.R. Krueger Machine Tool, Inc. | Flowmeter |
DE19860468A1 (de) * | 1998-12-28 | 2000-07-06 | Bosch Gmbh Robert | Kraftstoffeinspritzanlage |
DE19927901B4 (de) * | 1999-06-18 | 2005-10-20 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Überwachung einer Brennkraftmaschine |
US6321593B1 (en) * | 1999-11-18 | 2001-11-27 | Ford Global Technologies, Inc. | Electronic fuel pump, sender and pressure transducer tester |
DE10003906A1 (de) * | 2000-01-29 | 2001-08-09 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Kalibrieren eines Drucksensors |
DE10022953A1 (de) * | 2000-05-11 | 2001-11-15 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Kraftstoffeinspritzung |
DE10036868B4 (de) * | 2000-07-28 | 2004-07-29 | Robert Bosch Gmbh | Injektor für ein einen Hochdrucksammelraum umfassendes Einspritzsystem |
US20020152985A1 (en) * | 2001-04-20 | 2002-10-24 | Wolff Peter U. | System, apparatus including on-board diagnostics, and methods for improving operating efficiency and durability of compression ignition engines |
DE10137315A1 (de) | 2001-07-31 | 2003-02-20 | Volkswagen Ag | Schaltungsanordnung und Verfahren zur Regelung einer elektrischen Kraftstoffpumpe in einem rücklauffreien Kraftstoff-Fördersystem |
DE10148221A1 (de) * | 2001-09-28 | 2003-07-31 | Bosch Gmbh Robert | Verfahren, Computerprogramm sowie Steuer- und/oder Regelgerät zum Betreiben einer Brennkraftmaschine, sowie Brennkraftmaschine |
US7124746B2 (en) * | 2002-07-16 | 2006-10-24 | Brocco Douglas S | Method and apparatus for controlling a fuel injector |
JP4161690B2 (ja) * | 2002-11-20 | 2008-10-08 | 株式会社デンソー | 蓄圧式燃料噴射装置 |
DE10259358B4 (de) * | 2002-12-18 | 2005-02-24 | Siemens Ag | Verfahren zur Überwachung einer Brennkraftmaschine |
US7006910B2 (en) * | 2003-06-03 | 2006-02-28 | Caterpillar Inc. | Engine power loss compensation |
US6708507B1 (en) | 2003-06-17 | 2004-03-23 | Thermo King Corporation | Temperature control apparatus and method of determining malfunction |
JP4218465B2 (ja) * | 2003-08-22 | 2009-02-04 | トヨタ自動車株式会社 | 内燃機関の燃料噴射量制御装置 |
DE102004012491B4 (de) * | 2004-03-15 | 2008-12-24 | Continental Automotive Gmbh | Verfahren zur Bestimmung von defekten Aktoren einer Brennkraftmaschine |
US6976390B2 (en) * | 2004-03-25 | 2005-12-20 | General Motors Corporation | Engine cylinder deactivation test apparatus and method for using |
US7428893B2 (en) * | 2004-11-12 | 2008-09-30 | Caterpillar Inc | Electronic flow control valve |
US20100082219A1 (en) * | 2008-09-30 | 2010-04-01 | Gm Global Technology Operations, Inc. | Engine Using Glow Plug Resistance For Estimating Combustion Temperature |
US7950371B2 (en) * | 2009-04-15 | 2011-05-31 | GM Global Technology Operations LLC | Fuel pump control system and method |
JP4858578B2 (ja) | 2009-06-19 | 2012-01-18 | 株式会社デンソー | 燃料温度検出装置 |
DE102011081928A1 (de) * | 2011-08-31 | 2013-02-28 | Man Diesel & Turbo Se | Verfahren zur Überwachung von in Gaszufuhrleitungen eines Gasmotors angeordneten Rückschlagventilen |
DE102012203097B3 (de) * | 2012-02-29 | 2013-04-11 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Bestimmen eines Fehlers einer Druckmessung in einem Druckbehälter |
JP5928395B2 (ja) * | 2013-04-02 | 2016-06-01 | トヨタ自動車株式会社 | インジェクタの診断装置 |
CN105164401B (zh) * | 2014-04-04 | 2018-07-24 | 本田技研工业株式会社 | 缸内压力检测装置 |
AT515859B1 (de) * | 2014-06-12 | 2019-10-15 | Innio Jenbacher Gmbh & Co Og | Brennkraftmaschine |
DE102019212214B3 (de) | 2019-08-14 | 2020-10-15 | Mtu Friedrichshafen Gmbh | Verfahren zur Diagnose einer Injektorleckage bei einer Brennkraftmaschine, Brennkraftmaschine sowie Computerprogrammprodukt |
DE102019212215B3 (de) * | 2019-08-14 | 2020-12-31 | Mtu Friedrichshafen Gmbh | Verfahren zur Diagnose einer Injektorenfunktionsfähigkeit bei einer Brennkraftmaschine mit einer Mehrzahl von Injektoren, Brennkraftmaschine zur Durchführung eines solchen Verfahrens und Computerprogrammprodukt |
Family Cites Families (10)
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US3916622A (en) * | 1971-09-04 | 1975-11-04 | Volkswagenwerk Ag | Combustion engine with at least one exhaust gas cleaning arrangement |
DE2330258A1 (de) * | 1973-06-14 | 1975-01-09 | Bosch Gmbh Robert | Einrichtung zur abgasentgiftung von brennkraftmaschinen |
JPS5813134A (ja) * | 1981-07-18 | 1983-01-25 | Nippon Soken Inc | 過給式デイ−ゼルエンジンの安全装置 |
US4499876A (en) * | 1981-10-30 | 1985-02-19 | Nippondenso Co., Ltd. | Fuel injection control for internal combustion engines |
US4466408A (en) * | 1983-03-10 | 1984-08-21 | The United States Of America As Represented By The Secretary Of The Army | Apparatus for closed-loop combustion control in internal combustion engines |
JPS59201943A (ja) * | 1983-04-30 | 1984-11-15 | Hino Motors Ltd | エンジンの燃料噴射装置 |
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 |
JPH0569374U (ja) * | 1992-02-28 | 1993-09-21 | 富士重工業株式会社 | 筒内直噴式エンジンの異常警告装置 |
DE4335171C1 (de) * | 1993-10-15 | 1995-05-04 | Daimler Benz Ag | Kraftstoffeinspritzanlage für eine mehrzylindrige Dieselbrennkraftmaschine |
JP3133586B2 (ja) * | 1993-11-18 | 2001-02-13 | 富士重工業株式会社 | 高圧燃料噴射式エンジンの燃料圧力制御装置 |
-
1995
- 1995-09-28 DE DE19536109A patent/DE19536109A1/de not_active Withdrawn
-
1996
- 1996-04-24 JP JP9513045A patent/JPH10512345A/ja active Pending
- 1996-04-24 DE DE59607829T patent/DE59607829D1/de not_active Expired - Lifetime
- 1996-04-24 EP EP96913445A patent/EP0795077B1/de not_active Expired - Lifetime
- 1996-04-24 WO PCT/DE1996/000749 patent/WO1997012137A1/de not_active Application Discontinuation
- 1996-04-24 US US08/836,027 patent/US5816220A/en not_active Expired - Lifetime
- 1996-04-24 KR KR1019970703502A patent/KR980700509A/ko not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO9712137A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108730054A (zh) * | 2017-04-20 | 2018-11-02 | 福特环球技术公司 | 用于表征进气道燃料喷射器的方法和系统 |
CN108730054B (zh) * | 2017-04-20 | 2022-07-01 | 福特环球技术公司 | 用于表征进气道燃料喷射器的方法和系统 |
Also Published As
Publication number | Publication date |
---|---|
EP0795077B1 (de) | 2001-10-04 |
JPH10512345A (ja) | 1998-11-24 |
DE19536109A1 (de) | 1997-04-03 |
DE59607829D1 (de) | 2001-11-08 |
US5816220A (en) | 1998-10-06 |
KR980700509A (ko) | 1998-03-30 |
WO1997012137A1 (de) | 1997-04-03 |
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