Idle speed control system for direct injection spark ignition en

Details Idle speed control system for direct injection spark ignition en Idle speed control system for direct injection spark ignition en

1997-10-16

1999-11-02

Wolfe, Willis R.

Internal-combustion engines

Engine speed regulator

Idle speed control

12333914, 123295, F02M 300

Patent

active

059750480

ABSTRACT:
An idle speed control system for a direct injection spark ignition engine controlled to operate in either homogeneous air/fuel modes or stratified air/fuel modes. When operating in a stratified air/fuel mode, engine idle speed is controlled by controlling the engine air/fuel during unthrottled operation. When operating stratified and also throttled, engine idle speed is controlled by both controlling air/fuel and controlling the throttle. When operating in the homogeneous modes, engine idle speed is controlled by controlling both the throttle and ignition timing.

REFERENCES:
patent: 4721082 (1988-01-01), Hibino et al.
patent: 5031594 (1991-07-01), Morikawa
patent: 5203300 (1993-04-01), Orzel
patent: 5628290 (1997-05-01), Iida et al.
patent: 5630394 (1997-05-01), Grizzle et al.
patent: 5894828 (1999-04-01), Sivashankar et al.

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