Compression control system for an internal combustion engine and

Details Compression control system for an internal combustion engine and Compression control system for an internal combustion engine and

1983-02-10

1985-09-03

Lall, Parshotam S.

Internal-combustion engines

Four-cycle

Having subcharger associated with the cylinder

123 9011, F01L 1308

Patent

active

045385696

ABSTRACT:
A compression control system for an internal combustion engine for preventing the engine from knocking and for improving starting characteristics including an air/fuel mixture feedback circuit for feeding some of an air/fuel mixture in an engine combustion chamber back to the intake duct at a controlled rate. The feedback rate of the air/fuel mixture is determined on the basis of the engine operational condition and is controlled by a compression control valve inserted in the feedback circuit. The compression control valve is associated with a controller which detects the engine operating condition and determines the open period of the compression control valve in accordance with the engine operating condition. The controller also detects the engine operational position in the engine revolution cycle to synchronize the operation of the compression control valve with the engine revolution so that the compression control valve is opened for the controlled duration during the compression stroke of the engine.

REFERENCES:
patent: 3919986 (1975-11-01), Goto
patent: 3935846 (1976-02-01), Zelenka
patent: 4103648 (1978-08-01), Jarry
patent: 4442809 (1984-04-01), Nohira et al.

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