Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1988-03-25
1989-02-21
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Fuel injection system
36443111, F02B 3712, F02B 7700, F02P 1100, G05B 902
Patent
active
048055760
ABSTRACT:
A fault detection system for detecting a fault of a subcontrol apparatus as well as a main control apparatus backed up thereby in controlling the operation of an actuator for an internal combustion engine control apparatus such as a throttle control apparatus is disclosed. A second fault detection apparatus for the subcontrol apparatus is made up of a CPU constituting the main control apparatus, so that the fault detection apparatus for the subcontrol apparatus operates under condition that the main control apparatus is normal and the engine is preferably under a light load of operation. Each of the main control and the backup subcontrol apparatuses includes a fault detection apparatus, thereby preventing simultaneous fault of the two control apparatuses for improved safety of the vehicle drive.
REFERENCES:
patent: 4034732 (1977-07-01), van Burkleo
patent: 4502447 (1985-03-01), Schnurle et al.
patent: 4718389 (1988-01-01), Honig et al.
patent: 4718395 (1988-01-01), Iwata
patent: 4748566 (1988-05-01), Sasaki et al.
patent: 4748567 (1988-05-01), Sumizawa et al.
Abe Tomoaki
Kiyono Masashi
Takao Mitsunori
Nelli Raymond A.
Nippondenso Co. Ltd.
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