JPS54141926A - Method and device for compensating abnormal operation of temperature sensor - Google Patents
Method and device for compensating abnormal operation of temperature sensorInfo
- Publication number
- JPS54141926A JPS54141926A JP4875878A JP4875878A JPS54141926A JP S54141926 A JPS54141926 A JP S54141926A JP 4875878 A JP4875878 A JP 4875878A JP 4875878 A JP4875878 A JP 4875878A JP S54141926 A JPS54141926 A JP S54141926A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- temperature
- circuit
- voltage
- abnormal operation
- 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.)
- Pending
Links
Landscapes
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
PURPOSE: To raise the reliability of operation of an internal combustion engine in the abnormal operation of a temperature sensor, by comparing the electric signal of the sensor with a reference signal and by using an abnormality compensation electric signal as a temperature signal when the abnormal operation of the temperature sensor is detected.
CONSTITUTION: A control unit 10 for the engine comprises a temperature signal circuit 12 connected to a thermosensitive element 13 such as a thermistor which produces an output signal corresponding to the temperature of cooling water or lubricating oil, and a fuel supply controlling electronic circuit 11 which receives parameters such as an ignition signal, an intake quantity signal, etc. to apply a control signal to a supplied fuel quantity regulating valve 14. If a voltage VS of the temperature signal circuit 12 exceeds a reference voltage VR because of the wire snapping of the thermosensititve element 13, the ouput level of a comparator 20 becomes high and a switching transistor 23 is turned on. As a result, a solenoid 18a is energized and a changeover switch 18 is shifted so that an abnormality compensating voltage VC is applied to said electronic circuit 11 through a voltage follower circuit 19.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4875878A JPS54141926A (en) | 1978-04-26 | 1978-04-26 | Method and device for compensating abnormal operation of temperature sensor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4875878A JPS54141926A (en) | 1978-04-26 | 1978-04-26 | Method and device for compensating abnormal operation of temperature sensor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54141926A true JPS54141926A (en) | 1979-11-05 |
Family
ID=12812170
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4875878A Pending JPS54141926A (en) | 1978-04-26 | 1978-04-26 | Method and device for compensating abnormal operation of temperature sensor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54141926A (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57137632A (en) * | 1981-02-20 | 1982-08-25 | Honda Motor Co Ltd | Electronic fuel injection device of internal combustion engine |
JPS5811824A (en) * | 1981-07-15 | 1983-01-22 | Hitachi Ltd | Detecting circuit for short circuit of piezoelectric knock sensor |
JPS58202336A (en) * | 1982-05-20 | 1983-11-25 | Honda Motor Co Ltd | Fuel feed controlling method in time of trouble happening in temperature sensor |
DE3424086A1 (en) * | 1983-06-30 | 1985-01-10 | Honda Giken Kogyo K.K. | DEVICE FOR DETERMINING AN IRREGULARITY FOR DEVICES FOR DETERMINING OPERATING PARAMETERS OF AN INTERNAL COMBUSTION ENGINE |
DE3422868A1 (en) * | 1983-06-21 | 1985-01-10 | Honda Giken Kogyo K.K., Tokio/Tokyo | METHOD FOR DETECTING ABNORMALITIES BY INCORRECT DIAGNOSIS |
US4493304A (en) * | 1982-12-27 | 1985-01-15 | Honda Giken Kogyo Kabushiki Kaisha | Temperature measuring device for internal-combustion engine |
US4587615A (en) * | 1982-10-01 | 1986-05-06 | Fuji Jukogyo Kabushiki Kaisha | System for diagnosing an internal combustion engine |
JPH01100346A (en) * | 1987-10-14 | 1989-04-18 | Daihatsu Motor Co Ltd | Fail-safe system for water temperature sensor failure |
US5207091A (en) * | 1990-03-16 | 1993-05-04 | Nippondenso Co., Ltd. | Control system with malfunction detecting device for use in motor vehicle |
-
1978
- 1978-04-26 JP JP4875878A patent/JPS54141926A/en active Pending
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57137632A (en) * | 1981-02-20 | 1982-08-25 | Honda Motor Co Ltd | Electronic fuel injection device of internal combustion engine |
JPH0136567B2 (en) * | 1981-07-15 | 1989-08-01 | Hitachi Ltd | |
JPS5811824A (en) * | 1981-07-15 | 1983-01-22 | Hitachi Ltd | Detecting circuit for short circuit of piezoelectric knock sensor |
JPS58202336A (en) * | 1982-05-20 | 1983-11-25 | Honda Motor Co Ltd | Fuel feed controlling method in time of trouble happening in temperature sensor |
US4531495A (en) * | 1982-05-20 | 1985-07-30 | Honda Giken Kogyo Kabushiki Kaisha | Fuel supply control method having fail-safe function for abnormalities in engine temperature detecting means at the start of the engine |
JPH0156259B2 (en) * | 1982-05-20 | 1989-11-29 | Honda Motor Co Ltd | |
US4587615A (en) * | 1982-10-01 | 1986-05-06 | Fuji Jukogyo Kabushiki Kaisha | System for diagnosing an internal combustion engine |
US4493304A (en) * | 1982-12-27 | 1985-01-15 | Honda Giken Kogyo Kabushiki Kaisha | Temperature measuring device for internal-combustion engine |
DE3422868A1 (en) * | 1983-06-21 | 1985-01-10 | Honda Giken Kogyo K.K., Tokio/Tokyo | METHOD FOR DETECTING ABNORMALITIES BY INCORRECT DIAGNOSIS |
DE3424086A1 (en) * | 1983-06-30 | 1985-01-10 | Honda Giken Kogyo K.K. | DEVICE FOR DETERMINING AN IRREGULARITY FOR DEVICES FOR DETERMINING OPERATING PARAMETERS OF AN INTERNAL COMBUSTION ENGINE |
DE3424086C2 (en) * | 1983-06-30 | 1986-11-27 | Honda Giken Kogyo K.K. | Device for determining an irregularity of a device for determining a value of an operating parameter of an internal combustion engine |
JPH01100346A (en) * | 1987-10-14 | 1989-04-18 | Daihatsu Motor Co Ltd | Fail-safe system for water temperature sensor failure |
US5207091A (en) * | 1990-03-16 | 1993-05-04 | Nippondenso Co., Ltd. | Control system with malfunction detecting device for use in motor vehicle |
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