WO2006061296A1 - Verfahren und vorrichtung zum überprüfen von temperaturwerten eines temperatursensors einer brennkraftmaschine - Google Patents
Verfahren und vorrichtung zum überprüfen von temperaturwerten eines temperatursensors einer brennkraftmaschine Download PDFInfo
- Publication number
- WO2006061296A1 WO2006061296A1 PCT/EP2005/055772 EP2005055772W WO2006061296A1 WO 2006061296 A1 WO2006061296 A1 WO 2006061296A1 EP 2005055772 W EP2005055772 W EP 2005055772W WO 2006061296 A1 WO2006061296 A1 WO 2006061296A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- combustion engine
- temp1
- internal combustion
- value
- Prior art date
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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
- F02D41/22—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/16—Indicating devices; Other safety devices concerning coolant temperature
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2031/00—Fail safe
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the invention relates to a method and a corresponding device for checking temperature values of a temperature sensor of an internal combustion engine.
- monitoring of temperature values of a coolant temperature sensor for permanent retention within a predetermined temperature range for motor vehicles from model year 2006 onwards for the US market is prescribed because incorrect engine coolant temperature sensor temperatures may increase raw engine emissions, ie emissions without exhaust aftertreatment.
- the monitoring measures should ensure low-emission operation and maintain driving safety. This includes that in the event of errors, an emergency run of the internal combustion engine ensured and consequential damage can be avoided. If necessary, the driver of the motor vehicle is informed about the malfunction, so that the latter can initiate a check and / or repair in a workshop.
- a control device of the internal combustion engine stores information about the errors that have occurred, such as a type of error, a location of the fault and possibly the operating conditions under which the malfunction has occurred. This information can be evaluated in a workshop and thus support the repair work.
- the object of the invention is to provide a method and a corresponding device with which the temperature values of a temperature sensor can be checked.
- the invention is characterized by a method and a corresponding device for checking temperature values of a temperature sensor of an internal combustion engine, in which a first actual temperature value is detected during a first predetermined period of time close to an end of an operation of the internal combustion engine.
- a second actual temperature value is detected during a second predetermined period of time, close to an operating state of the start of the internal combustion engine.
- a shutdown period of the internal combustion engine is determined between the termination of the operation and the subsequent start of the operation of the internal combustion engine.
- a temperature setpoint is determined depending on the first actual temperature value and the shutoff time duration.
- An error of the th temperature actual value is detected depending on the second actual temperature value and the temperature setpoint.
- the advantage is that the second actual temperature value can easily be compared with the temperature setpoint.
- the temperature setpoint can be determined so that this corresponds to an expected temperature of the internal combustion engine after the end of the shutdown period. If the second temperature actual value deviates from the temperature setpoint, the error of the second actual temperature value can be easily detected.
- the first predetermined period of time preferably comprises a period of time during which the internal combustion engine is heated up by its operation, preferably to its operating temperature.
- the first temperature actual value is preferably detected shortly before or after termination of the operation of the internal combustion engine, so that the first actual temperature value substantially corresponds to a temperature of the internal combustion engine when the operation of the internal combustion engine is ended.
- the second predetermined period of time preferably includes a period of time during which the temperature of the internal combustion engine is not or only slightly heated by the current operation of the internal combustion engine, the second actual temperature substantially corresponds to the temperature of the internal combustion engine at the start of the operation of the internal combustion engine on the completion of the operation after the shutdown period follows.
- the second actual temperature value is preferably detected immediately after the operating state of the start, but can also be detected before the operating state of the start or during the operating state of the start.
- the temperature setpoint is determined depending on a first physical model of the cooling process of the internal combustion engine. The advantage is that the temperature setpoint can be accurately determined if a suitable physical model is available for the engine cooling process.
- the error of the second actual temperature value is detected if the second actual temperature value is greater by a predetermined amount or a predetermined factor than the temperature setpoint value.
- a predetermined amount or a predetermined factor can be suitably specified accordingly.
- an ambient temperature value is determined within the second predetermined period of time and the temperature setpoint is determined as a function of the ambient temperature value.
- the ambient temperature value is determined by means of a further temperature sensor.
- the ambient temperature value is particularly easy and precise to determine.
- a third temperature actual value is detected by means of the further temperature sensor during the first predetermined period of time.
- a fourth temperature actual value is detected by means of the further temperature sensor during the second predetermined period of time.
- the ambient temperature value is determined as a function of the third actual temperature value, the fourth actual temperature value and the shutdown time duration.
- the ambient temperature value is determined as a function of a second physical model of the cooling process of the internal combustion engine.
- the advantage is that the ambient temperature value can be determined precisely if the second physical model of the cooling process of the internal combustion engine is suitably predetermined.
- Figure 1 shows an internal combustion engine with a control unit
- Figure 2 is a temperature-time diagram of a cooling process
- An internal combustion engine (FIG. 1) comprises an intake tract 1, an engine block 2, a cylinder head 3 and an exhaust tract 4.
- the engine block 2 comprises a plurality of cylinders, which have pistons and connecting rods via which they are coupled to a crankshaft 21. Furthermore, a feed device 5 is provided for fuel.
- the cylinder head 3 includes a valvetrain with a gas inlet valve, a gas outlet valve and valve actuators.
- the cylinder head 3 further includes an injection valve 34 and a spark plug.
- the engine block 2 is designed such that coolant, for example water with additives, flows through regions of it in a cooling circuit 6.
- coolant for example water with additives
- the heat generated in the engine block 2 during operation is dissipated to a radiator, which is arranged in the cooling circuit outside of the engine block 2 and is preferably surrounded by air.
- the dissipated by the flowing coolant from the engine heat is released into the air.
- a coolant temperature sensor 7 is provided, which is ademit- teltemperaturwert detected.
- the coolant temperature value is dependent on a temperature of the engine block 2.
- the internal combustion engine is associated with a control device 9, which can also be referred to as a device for checking temperature values of a temperature sensor of the internal combustion engine.
- the control device 9 is designed to execute programs which are stored in the control device 9 or in a memory which is coupled thereto.
- the control device 9 are associated with sensors which detect different measured variables and in each case determine the measured value of the measured variable.
- the control device 9 determines dependent on at least one of the measured variables manipulated variables, which are then converted into corresponding control signals for controlling actuators by means of corresponding actuators.
- the sensors are, for example, a pedal position sensor which detects the position of an accelerator pedal, a crankshaft angle sensor 10, which detects a crankshaft angle and is then assigned a rotational speed, an air mass meter, the coolant temperature sensor 7, which detects the coolant temperature value, an oil temperature sensor 8, the one An oil temperature value detected, a torque sensor 11 or an intake air temperature sensor 12.
- a pedal position sensor which detects the position of an accelerator pedal
- a crankshaft angle sensor 10 which detects a crankshaft angle and is then assigned a rotational speed
- an air mass meter the coolant temperature sensor 7, which detects the coolant temperature value
- an oil temperature sensor 8 the one An oil temperature value detected
- torque sensor 11 a torque sensor 11 or an intake air temperature sensor 12.
- any subset of the sensors or additional sensors may be present.
- the actuators are designed, for example, as gas inlet or gas outlet valves, injection valves 34, spark plug or throttle valve.
- the internal combustion engine also has other cylinders, which are then assigned corresponding actuators.
- FIG. 2 shows a temperature-time diagram with a first temperature curve TEMPI and a second temperature curve TEMP2.
- the first temperature curve TEMPI shows a profile, for example, of the coolant temperature, which is detected by means of the coolant temperature sensor 7.
- the first temperature curve TEMPI may also be e.g. show the course of the oil temperature, which is detected by the oil temperature sensor 8, or the course of temperatures that are detected by means of another temperature sensor of the internal combustion engine.
- the second temperature curve TEMP2 shows, for example, the profile of an intake air temperature, which is detected by means of the intake air temperature sensor 12.
- the operation of the internal combustion engine is terminated at a time t STOP.
- the internal combustion engine then cools down during a shut-off period TA until the operation of the internal combustion engine is restarted at a time t START.
- the shut-off time TA corresponds to a time difference between the time t_START and the time t_STOP.
- the internal combustion engine has assumed an ambient temperature after about eight hours, which may be detected as an ambient temperature value TEMP_AMB.
- the period of time after which the internal combustion engine has approximately reached the ambient temperature depends, for example, on the type and size of the internal combustion engine and on the temperature which it has at the time t_STOP.
- a program for checking temperature values is in a Step S1 started.
- the step S1 is preferably carried out at the termination of the operation of the internal combustion engine.
- a first actual temperature value TEMP1_STOP is detected and stored at the time t_STOP.
- the first actual temperature TEMP1_STOP is detected within a first predetermined time period close to the end of the operation of the internal combustion engine. During the first predetermined period of time, the temperature of the internal combustion engine essentially corresponds to its temperature at the time t_STOP.
- the first temperature actual value TEMP1_STOP can be detected before or after the end of the operation, as long as the temperature of the internal combustion engine has not changed significantly compared to its temperature at the time t STOP.
- a second temperature actual value TEMP1_START and the time t_START is detected.
- the second actual temperature value TEMP1_START is detected within a second predetermined period of time, close to the operating state of the start of the internal combustion engine.
- the actual temperature of the internal combustion engine substantially corresponds to its temperature at the time t START.
- the second actual temperature value TEMP1_START can be detected before, after or during the operating state of the start, as long as the actual temperature of the internal combustion engine has not changed significantly with respect to its temperature at the time t START or is still sufficiently distinguishable from the actual temperature of the internal combustion engine Internal combustion engine had within the first predetermined period of time.
- a temperature setpoint TEMPI S is determined as a function of the first actual temperature value TEMP1_STOP and of the shutoff time period TA.
- a step S5 it is checked whether the second actual temperature TEMP1_START is greater than a sum of the temperature setpoint TEMPI S and a predetermined temperature threshold TEMP1_THR. If the condition is met, an error ERR is detected in a step S6 and the program sequence is ended in a step S7. However, if the condition is not satisfied in step S5, then the program flow is ended in step S7.
- the predetermined temperature threshold value TEMPI THR is suitably predetermined, so that the error ERR can be reliably detected. Is the predetermined temperature threshold TEMP1_THR example 1O 0 C, then the error ERR is detected if the second actual temperature TEMPI START more than 1O 0 C is greater than the temperature set point TEMP1_S.
- the ambient temperature value TEMP_AMB may be detected, for example by means of a further temperature sensor, e.g. is a separate temperature sensor for detecting the ambient temperature value TEMP AMB or the intake air temperature sensor.
- the temperature target value TEMP1_S may be determined in a step S9 replacing the step S4 depending on the first actual temperature value TEMP1_STOP, the shutoff time period TA and the ambient temperature value TEMP AMB.
- the ambient temperature value TEMP_AMB is preferably detected within the second predetermined period of time.
- the further temperature sensor is arranged so that the temperature values detected by it are dependent on the Temperature of the internal combustion engine, then it is advantageous to take into account for these temperatures, the cooling of the internal combustion engine.
- the steps S2, S3 and S8 are replaced by the steps Sl0, Sil or S12.
- step S10 which replaces step S2
- a third actual temperature value TEMP2_STOP is detected and stored in addition to the first actual temperature value TEMP1_STOP and the time t_STOP.
- the third actual temperature value TEMP2_STOP is detected by means of the further temperature sensor within the first predefined period of time and corresponds, for example, to the intake air temperature at the time t_STOP.
- step S11 which replaces step S3
- a fourth actual temperature value TEMP2_START is detected in addition to the second actual temperature value TEMPI START and the time t_START.
- the fourth actual temperature value TEMP2_START is detected by means of the further temperature sensor within the second predetermined period of time and corresponds, for example, to the intake air temperature at the time t_START.
- step S12 which replaces step S8, the ambient temperature value TEMP AMB is determined depending on the third actual temperature value TEMP2_STOP, the fourth actual temperature value TEMP2_START and the shutoff time period TA.
- the thus determined ambient temperature value TEMP_AMB is then taken into account in the step S9 in the determination of the temperature setpoint TEMP1_S.
- the temperature setpoint TEMP1_S and / or the ambient temperature value TEMP AMB are dependent on a respective physical model of the cooling process of the internal combustion engine. machine determined. Cooling is generally done according to an exponential function with negative exponent.
- the temperature setpoint TEMP1_S at the time t_START can be determined, for example, according to the following formula:
- TEMP1_S TEMP_AMB + (TEMP1_STOP-TEMP_AMB) * exp (-fl * TA),
- Fl is a first predetermined factor specific to the internal combustion engine.
- the first factor Fl depends on a first effective, heat-emitting surface Al, on a first effective volume V1, on a first heat transfer coefficient OCl, on a first density R1, and on a first heat capacity c1 of the volume V1.
- the first predetermined factor Fl can be determined according to the formula
- the ambient temperature value TEMP AMB can be determined according to the following formula:
- TEMP_AMB (TEMP2_START-TEMP2_STOP * exp (-F2 * TA)) / (1-exp (- F2 * TA)).
- F2 is a second predetermined factor specific to the internal combustion engine and is determined according to the following formula:
- F2 (0C2 * A2) / (r2 * c2 * V2), where A2 is a second effective heat-emitting surface, V2 is a second effective volume, ⁇ 2 is a second heat transfer coefficient, r2 is a second density, and c2 is a second heat capacity of the volume V2.
- the first predetermined factor Fl and the second predetermined factor F2 are dependent on the location at which the temperature sensor or the further temperature sensor are arranged, and on the type and size of the internal combustion engine and are correspondingly predetermined.
- the first predetermined factor Fl and the second predetermined factor F2 are preferably determined in advance by measurement, for example on a test bench.
- the internal combustion engine When the internal combustion engine is cooled via the refrigeration cycle 6 during operation and the engine cooling is terminated upon completion of the engine operation, the internal combustion engine may slow down more slowly during a period immediately following completion of operation is indicated by the exponential function.
- the cooling of the internal combustion engine in accordance with the exponential function then prevails only after expiration of this period of time, which is for example about two hours.
- the cooling of the internal combustion engine during this period of time is dependent on the type and size of the internal combustion engine and the cooling circuit 6.
- the temperature setpoint TEMP1_S and / or the ambient temperature value TEMP AMB are determined only after the expiration of the time duration corresponding to the exponential function. In this case, the cooling of the internal combustion engine during the time period is preferably taken into account.
- shut-off period TA is so long that the temperature of the internal combustion engine has dropped to the ambient temperature, for example after about eight hours, then this can be used to determine the ambient temperature value TEMP_AMB and / or to check the second temperature actual value TEMP1_START.
- the fourth temperature actual value TEMP2_START is then approximately equal to the ambient temperature value TEMP AMB.
- the temperature setpoint TEMP1_S is then preferably also approximately equal to the ambient temperature value TEMP AMB.
- the second actual temperature TEMP1_START should be equal to the ambient temperature value TEMP AMB, so that the error ERR of the second temperature TEMP1_START can be very easily detected if this example to more than 1O 0 C, or by a different predetermined amount or predetermined factor is greater than the Temperature setpoint TEMP1_S, the ambient temperature value TEMP AMB or the fourth actual temperature value TEMP2_START.
- the ambient temperature value TEMP_AMB and / or the temperature setpoint TEMP1_S depending on the respectively associated physical model can then be dispensed with.
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- 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 (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05807980A EP1819919A1 (de) | 2004-12-10 | 2005-11-04 | Verfahren und vorrichtung zum ]berpr]fen von temperaturwerten eines temperatursensors einer brennkraftmaschine |
US11/792,543 US7534033B2 (en) | 2004-12-10 | 2005-11-04 | Method and device for checking temperature values of a temperature sensor of a combustion engine |
KR1020077001714A KR101230569B1 (ko) | 2004-12-10 | 2005-11-04 | 연소기관의 온도 센서의 온도 값들을 검사하기 위한 방법및 장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004059685.9 | 2004-12-10 | ||
DE102004059685A DE102004059685B4 (de) | 2004-12-10 | 2004-12-10 | Verfahren und Vorrichtung zum Überprüfen von Temperaturwerten eines Temperatursensors einer Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006061296A1 true WO2006061296A1 (de) | 2006-06-15 |
Family
ID=35789207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/055772 WO2006061296A1 (de) | 2004-12-10 | 2005-11-04 | Verfahren und vorrichtung zum überprüfen von temperaturwerten eines temperatursensors einer brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US7534033B2 (de) |
EP (1) | EP1819919A1 (de) |
KR (1) | KR101230569B1 (de) |
DE (1) | DE102004059685B4 (de) |
WO (1) | WO2006061296A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102777589A (zh) * | 2011-05-10 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | 用于确定干式离合器变速器中初始温度的方法 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100570325B1 (ko) * | 2004-01-07 | 2006-04-11 | 주식회사 케피코 | 자동변속기의 유온센서 단락, 단선결함 검출방법 |
US9267443B2 (en) | 2009-05-08 | 2016-02-23 | Gas Turbine Efficiency Sweden Ab | Automated tuning of gas turbine combustion systems |
US9671797B2 (en) | 2009-05-08 | 2017-06-06 | Gas Turbine Efficiency Sweden Ab | Optimization of gas turbine combustion systems low load performance on simple cycle and heat recovery steam generator applications |
US9354618B2 (en) | 2009-05-08 | 2016-05-31 | Gas Turbine Efficiency Sweden Ab | Automated tuning of multiple fuel gas turbine combustion systems |
US8437941B2 (en) | 2009-05-08 | 2013-05-07 | Gas Turbine Efficiency Sweden Ab | Automated tuning of gas turbine combustion systems |
CN101825496B (zh) * | 2010-05-04 | 2012-09-05 | 奇瑞汽车股份有限公司 | 一种计算发动机温度传感器的温度替代值的装置 |
JP5510684B2 (ja) * | 2010-06-08 | 2014-06-04 | トヨタ自動車株式会社 | 内燃機関の制御装置 |
Citations (2)
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JP2000230453A (ja) * | 1999-02-09 | 2000-08-22 | Honda Motor Co Ltd | 温度センサの故障診断装置 |
US20040184507A1 (en) * | 2003-02-20 | 2004-09-23 | Toshinori Tsukamoto | Failure diagnosing apparatus for an engine cooling water temperature sensor |
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DE3990872T1 (de) * | 1988-07-29 | 1990-07-19 | Mitsubishi Motors Corp | Failsafe-vorrichtung fuer einen temperatursensor |
JPH0828337A (ja) * | 1994-07-19 | 1996-01-30 | Unisia Jecs Corp | 内燃機関の燃料温度検出装置における自己診断装置 |
US6279390B1 (en) * | 1996-12-17 | 2001-08-28 | Denso Corporation | Thermostat malfunction detecting system for engine cooling system |
DE19954177A1 (de) * | 1999-11-10 | 2001-05-23 | Bosch Gmbh Robert | Verfahren zur Prüfung der Funktionsfähigkeit und/oder zum Abgleichen eines Abgastemperatursensors |
US6463892B1 (en) * | 2000-03-15 | 2002-10-15 | Ford Global Technologies, Inc. | Method for detecting cooling system faults |
US6556901B2 (en) * | 2000-06-29 | 2003-04-29 | Denso Corporation | Electronic control unit and method measuring and using electric power-off period |
DE10120968C2 (de) * | 2001-04-27 | 2003-04-30 | Audi Ag | Verfahren und Schaltungsanordnung zur Überwachung der Funktionsfähigkeit eines Temperatursensors einer Brennkraftmaschine |
JP3565800B2 (ja) * | 2001-07-05 | 2004-09-15 | 本田技研工業株式会社 | 温度センサの故障判定装置 |
DE10316606A1 (de) * | 2003-04-11 | 2004-11-18 | Bayerische Motoren Werke Ag | Fehlererkennungssystem zur Erkennung eines fehlerhaften Temperatursensors in Kraftfahrzeugen |
-
2004
- 2004-12-10 DE DE102004059685A patent/DE102004059685B4/de not_active Expired - Fee Related
-
2005
- 2005-11-04 WO PCT/EP2005/055772 patent/WO2006061296A1/de active Application Filing
- 2005-11-04 KR KR1020077001714A patent/KR101230569B1/ko active IP Right Grant
- 2005-11-04 EP EP05807980A patent/EP1819919A1/de not_active Withdrawn
- 2005-11-04 US US11/792,543 patent/US7534033B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000230453A (ja) * | 1999-02-09 | 2000-08-22 | Honda Motor Co Ltd | 温度センサの故障診断装置 |
US20040184507A1 (en) * | 2003-02-20 | 2004-09-23 | Toshinori Tsukamoto | Failure diagnosing apparatus for an engine cooling water temperature sensor |
Non-Patent Citations (2)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 2000, no. 11 3 January 2001 (2001-01-03) * |
See also references of EP1819919A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102777589A (zh) * | 2011-05-10 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | 用于确定干式离合器变速器中初始温度的方法 |
CN102777589B (zh) * | 2011-05-10 | 2015-02-18 | 通用汽车环球科技运作有限责任公司 | 用于确定干式离合器变速器中初始温度的方法 |
Also Published As
Publication number | Publication date |
---|---|
DE102004059685A1 (de) | 2006-06-14 |
KR101230569B1 (ko) | 2013-02-06 |
KR20070090139A (ko) | 2007-09-05 |
DE102004059685B4 (de) | 2008-05-15 |
US20080019413A1 (en) | 2008-01-24 |
EP1819919A1 (de) | 2007-08-22 |
US7534033B2 (en) | 2009-05-19 |
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