Fuel pressure control method for high pressure direct fuel injec

Details Fuel pressure control method for high pressure direct fuel injec Fuel pressure control method for high pressure direct fuel injec

1993-09-28

1994-07-12

Miller, Carl S.

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

123514, 12317917, F02M 3704

Patent

active

053278720

ABSTRACT:
The fuel pressure is kept high for a specified time or until an engine temperature goes down below a specified value after an engine stop under a hot condition of engine in order to prevent vapor lock in the fuel system. Also, a starter motor is prohibited from being switched on until a fuel pressure reaches a specified value in order to prevent a high pressure fuel pump from being operated, whereby preventing sticking or scuffing in the high pressure fuel pump.

REFERENCES:
patent: 3974809 (1976-08-01), Stumpp
patent: 4346687 (1982-08-01), Bauder
patent: 4370967 (1983-02-01), Gmelin
patent: 4530329 (1985-07-01), Maisch
patent: 4562816 (1986-01-01), Dorr
patent: 4732131 (1988-03-01), Hensel
patent: 4984554 (1991-01-01), Ariga
patent: 5074272 (1991-12-01), Bostick

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