Fuel pressure control method and system for direct fuel injectio

Details Fuel pressure control method and system for direct fuel injectio Fuel pressure control method and system for direct fuel injectio

1993-12-07

1995-03-07

Nelli, Raymond A.

Internal-combustion engines

Starting device

Condition responsive control of starting device

12317917, 123516, F02M 3720

Patent

active

053948440

ABSTRACT:
Based on the output signal of the fuel sensor, it is judged whether or not the fuel (liquid fuel) is detected in the high pressure fuel system. When the fuel is detected, the count value for counting the detecting time is compared with the predetermined value. If the count value is equal to or larger than the predetermined value, the electromagnetic type high pressure fuel regulator is rendered closed and the starter motor prohibition flag is cleared to admit energizing the starter motor. As a result of this, the engine is permitted to be started and thus the high pressure fuel pump starts to produce the high pressure in the high pressure fuel system, whereby a sticking or a scuffing in the fuel pump due to poor lubrication can be prevented and an overshoot of the fuel pressure or a void injection in the fuel injector can be avoided.

REFERENCES:
patent: 4329951 (1982-05-01), Seilly
patent: 4370967 (1983-02-01), Gmelin et al.
patent: 4622930 (1986-11-01), Hamano et al.
patent: 4807583 (1989-02-01), Thornthwaite et al.
patent: 4875443 (1989-10-01), Sano et al.
patent: 4878474 (1989-11-01), Hack, Jr.
patent: 4905641 (1990-03-01), Miller
patent: 4984554 (1991-01-01), Ariga et al.

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