Apparatus for electronically controlling internal combustion eng

Details Apparatus for electronically controlling internal combustion eng Apparatus for electronically controlling internal combustion eng

1984-01-05

1986-11-11

Gruber, Felix D.

Boots, shoes, and leggings

123417, 123479, 371 11, F02P 508, F02P 1106

Patent

active

RE0322865

ABSTRACT:
An apparatus for electronically controlling an internal combustion engine of automobiles, in which a processor comprising a CPU, a RAM and a ROM is determined to be in the state of its normal operation when the processor delivers a predetermined pulse train in response to an interrupt signal having a predetermined period and supplied to the processor, and in which a backup circuit is actuated by a discriminant signal indicating the abnormal operation of the processor so that the operation of controlling the internal combustion engine, normally performed by the processor, is performed by the backup circuit.

REFERENCES:
patent: 3082374 (1963-03-01), Buuck
patent: 3816717 (1974-06-01), Yoshida et al.
patent: 3906207 (1975-09-01), Rivere et al.
patent: 3969614 (1976-07-01), Moyer et al.
patent: 4099495 (1978-07-01), Kiencke et al.
patent: 4119070 (1978-10-01), Asano
patent: 4245315 (1981-01-01), Barman et al.
patent: 4255789 (1981-03-01), Hartford et al.
Chrysler Corporation; 1977 Service Manual; Electronic Lean Burn System, pp. 8-62 of interest.

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