Apparatus for controlling an internal pressure of a fuel tank in

Details Apparatus for controlling an internal pressure of a fuel tank in Apparatus for controlling an internal pressure of a fuel tank in

1993-07-12

1994-11-01

Miller, Carl S.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123516, F02M 3302

Patent

active

053599780

ABSTRACT:
A fuel pressure control apparatus includes a valve for controlling an internal pressure of a fuel tank, the valve including a valving member, a valve seat, and an actuating member for pressing the valving member on the valve seat under a set pressure; and a pressure adjusting part for adjusting the set pressure of the actuating member of the valve to a first set pressure when an engine is operating, the first set pressure being higher than an atmospheric pressure and allowing the internal pressure of the fuel tank to be in equilibrium with the first set pressure, and for adjusting the set pressure of the actuating member to a second set pressure when the engine stops operating, the second set pressure being higher than the first set pressure, thus allowing the internal pressure of the fuel tank to be increased, when the engine stops operating, to a pressure higher than the first set pressure.

REFERENCES:
patent: 927895 (1992-08-01), Kidokoro et al.
patent: 4044743 (1977-08-01), Eaton
patent: 4153025 (1979-05-01), Thornburgh
patent: 4343281 (1982-08-01), Oozumi
patent: 4702216 (1987-10-01), Haruta
patent: 5123459 (1992-06-01), Toshihiro
patent: 5211151 (1993-05-01), Nakajima et al.
patent: 5220898 (1993-06-01), Kidokoro
patent: 5235955 (1992-08-01), Osaki
patent: 5267547 (1993-12-01), Chikamatsu

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