[특허]Fail safe device for temperature sensor

Fail safe device for temperature sensor 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02D-041/22 G06F-015/20
출원번호	US-0498041 (1990-03-22)
우선권정보	JP-0188377 (1988-07-29)
발명자 / 주소	Hashimoto Toru (Kyoto JPX) Chino Masashi (Kyoto JPX) Takahashi Akira (Kyoto JPX)
출원인 / 주소	Mitsubishi Jidosha Kogyo Kabushiki Kaisha (Tokyo JPX 03)
인용정보	피인용 횟수 : 31 인용 특허 : 0

초록 ▼

An engine control system for controlling an engine in response to an output from a temperature sensor for detecting a coolant temperature of the engine, comprising temperature sensor output monitoring device for monitoring an output of the temperature sensor during operation of the engine, temperature sensor fail judging device for judging the temperature sensor to be failed when the temperature sensor output monitoring device does not detect for a predetermined length of time a change in output of the temperature sensor corresponding to an increase in coolant temperature while the temperature sensor is outputting a signal corresponding to the coolant temperature during the operation of the engine, and dummy signal outputting device for outputting a dummy signal corresponding to a predetermined temperature in place of an output signal from the temperature sensor when the temperature sensor is judged as failed by the temperature sensor fail judging device, which, in addition to engine control with a normal temperature sensor, can detect a malfunction of the temperature sensor due to a short circuit, an open circuit, or a resistance increase to fix the temperature sensor output, thereby providing positive engine control, and enables fixing of the engine speed to a desired value in the idle rotation speed control, suppression of an unnecessary fuel enrichment in the fuel control, and suppression of an advance in ignition timing in the ignition control.

대표청구항 ▼

A fail safe device for a temperature sensor with an engine control device for controlling an engine in response to an output from said temperature sensor for detecting a coolant temperature of the engine, comprising temperature sensor output monitoring means for monitoring an output of said temperature sensor, and dummy signal outputting means for outputting a dummy signal corresponding to a setting temperature in place of an output signal from said temperature sensor to said engine control device when said temperature sensor output monitoring means detects that a temperature of said temperature sensor changes to a lower side than said setting temperature set equal to or lower than an after-warm-up temperature of the engine.

이 특허를 인용한 특허 (31)

Taniguchi Satoru,JPX, Abnormality detecting apparatus for an air temperature sensor.
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Mitsutani Noritake,JPX ; Fujita Tomohiro,JPX ; Mizuno Hideaki,JPX, Abnormality detector apparatus for a coolant apparatus for cooling an engine.
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Higashiyama, Norikazu; Satoya, Koichi; Mizutani, Koichi, Abnormality diagnosis apparatus and method for water temperature sensor.
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Musashi,Kazuhiro; Miura,Osamu, Air intake device, sensor unit, two-wheeled vehicle, and intake air temperature detection method.
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McKissick ; Jr. Garry W ; Booms Chris J ; Johnson Thomas M, Ambient temperature/inlet air temperature sensor dither.
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Houtz Phillip J. ; Weller Brian R., Apparatus for controlling fuel delivery of an engine.
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Kumar, D V J Ravi; Srinivas, Theertham; Ghorpade, Gururaj, Background sensor diagnostic for multi-channel ADC.
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Masuda, Shun; Muto, Hirohumi; Yamazaki, Eisei, Controller of an internal combustion engine for determining a failure of a thermostat.
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Uchiyama Katsuaki,JPX, Diagnostic apparatus of coolant temperature sensor, diagnostic apparatus of cooling apparatus and method.
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Taniguchi Satoru,JPX ; Katoh Kazunori,JPX ; Mizutani Koichi,JPX ; Mori Hideo,JPX, Diagnostic system for a cooling water temperature sensor.
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Lin, George; Gambhir, Gurpreet; Gete, Zenebe, Engine cooling system onboard diagnostic strategy.
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Okayasu, Kouji; Ishihara, Yoshinori, Exhaust gas temperature sensor inspecting apparatus.
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Bruedigam Claus,DEX ; Eppinger Klaus,FRX ; Pfeufer Thomas,DEX, Method and apparatus for controlling an internal combustion engine.
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Ley, Andre; Sweet, Benjamin D., Method and apparatus for testing at least one temperature sensor in a vehicle.
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Kirkpatrick, William E.; Leach, Harley, Method and apparatus for varying the duration of a fuel injector cycle pulse length.
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Rahman,Mahfuzur; Simpson,Kenneth M.; Tranquilli,Paulo F. R., Method and apparatus to evaluate an intake air temperature monitoring circuit.
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Dölker, Armin, Method for automatically controlling an internal combustion engine.
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Jung Chul-Hwa,KRX, Method for controlling engine during malfunction of coolant temperature sensor.
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Wakahara, Keiji; Ichikawa, Akira, Method for detecting malfunction of a cooling system based on detected coolant temperature.
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Wakahara,Keiji; Ichikawa,Akira, Method for detecting malfunction of a cooling system based on detected coolant temperature.
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Yoo In Kwang ; Simpson Kenneth M. ; Majkowski Stephen F., Model-based diagnostic method for an engine cooling system.
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Wichowski, Robert P.; Sears, Patrick J.; Hawes, Kevin G., Sensor and control systems for electrical machines.
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Cohen, Alexander J.; Jung, Edward K.Y.; Levien, Royce A.; Lord, Robert W.; Malamud, Mark A.; Rinaldo, Jr., John D., Sensor emulation using mote networks.
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Cohen, Alexander J.; Rinaldo, Jr., John D.; Lord, Robert W.; Malamud, Mark A.; Levien, Royce A.; Jung, Edward K. Y., Sensor emulation using mote networks.
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Rasbornig, Friedrich, Speed sensor device, speed sensor method, electronic control unit and control method.
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Wakahara, Keiji; Ichikawa, Akira, Thermostat malfunction detecting system for engine cooling system.
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Wakahara,Keiji; Ichikawa,Akira, Thermostat malfunction detecting system for engine cooling system.
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Wakahara,Keiji; Ichikawa,Akira, Thermostat malfunction detecting system for engine cooling system.
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Wakahara,Keiji; Ichikawa,Akira, Thermostat malfunction detecting system for engine cooling system.
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Wakahara,Keiji; Ichikawa,Akira, Thermostat malfunction detecting system for engine cooling system.
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Magarida, Naofumi; Hattori, Fumiaki; Nakatani, Koichiro; Furuhashi, Michio; Kogo, Tomoyuki; Ishiyama, Shinobu, Vehicle having idling stop control and control methods thereof.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Fail safe device for temperature sensor 원문보기

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이 특허를 인용한 특허 (31)

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Fail safe device for temperature sensor 원문보기

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이 특허를 인용한 특허 (31)

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