Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1988-03-25
1989-06-13
Miller, Carl Stuart
Internal-combustion engines
Charge forming device
Fuel injection system
123179L, F02M 3900
Patent
active
048382302
ABSTRACT:
A fuel injection control system for an internal combustion engine achieves efficient combustion during starting the engine and reduces excess fuel consumption. While the engine has not warmed yet after starting, extra fuel is supplied to the engine by a starting fuel supply means. When the engine rotational speed exceeds a predetermined first speed corresponding to an almost complete combustion state, the fuel injection amount from the starting fuel supply means is gradually decreased. When the engine rotational speed is determined to exceed a predetermined second speed corresponding to a stable combustion state, the extra fuel from the starting fuel supply means is terminated, and the fuel injection amount based on the engine start control is changed over to the amount based on an air-fuel ratio control for post-starting state.
REFERENCES:
patent: 4516550 (1985-05-01), Buck
patent: 4653452 (1987-03-01), Sawada
patent: 4681079 (1987-07-01), Kaneta
patent: 4705004 (1987-11-01), Takahashi
patent: 4712522 (1987-12-01), Anzai
patent: 4739741 (1988-04-01), Iwata
patent: 4751909 (1988-06-01), Otobe
Miller Carl Stuart
Toyota Jidosha & Kabushiki Kaisha
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