Control system for engine with mechanical supercharger

Details Control system for engine with mechanical supercharger Control system for engine with mechanical supercharger

1993-04-13

1995-06-06

Thorpe, Timothy S.

Internal-combustion engines

Charge forming device

Supercharger

123 9015, F02B 3300

Patent

active

054213088

ABSTRACT:
A control system for an engine with a mechanical supercharger supercharges intake air. The control system has a valve timing variable mechanism for varying an opening and closing timing of an intake valve, a fuel injector delivering fuel in an intake stroke of each of the cylinders of the engine in a high load and low speed region of the engine, and a controller for controlling the valve timing variable mechanism. In a high load region of the engine, an overlapping period of an intake valve and an exhaust valve is longer in a high speed region than in a low speed region. A closing time of the intake valve is earlier than a predetermined optimum closing time and a closing time of the intake valve in a high speed region is later than in the low speed region.

REFERENCES:
patent: 4458606 (1990-09-01), Hitomi et al.
patent: 5076222 (1991-12-01), Kawamura
patent: 5233831 (1993-08-01), Hitomi et al.

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