Variable compression-ratio control device for an internal combus

Details Variable compression-ratio control device for an internal combus Variable compression-ratio control device for an internal combus

1988-07-13

1989-05-30

Okonsky, David A.

Internal-combustion engines

Adjustable combustion chamber

Piston in head adjusted

731173, F02B 7504

Patent

active

048340316

ABSTRACT:
A variable compression ratio control device includes a mechanism for varying a compression ratio of an engine in response to engine driving conditions, at least between a higher stage and a lower stage, a compression ratio detecting sensor for detecting a current compression ratio, a sensor fault detecting unit for detecting a malfunction of the compression ratio detecting sensor, and a fail-safe unit for lowering and fixing the compression ratio when the sensor fault detecting unit detects a malfunction of the compression ratio detecting sensor.

REFERENCES:
patent: 4375672 (1983-03-01), Kato et al.
patent: 4505152 (1985-03-01), Haddox
patent: 4687348 (1987-08-01), Naruoka et al.

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