Fuel discharge preventive device of gas engine

Internal-combustion engines – Charge forming device – Having fuel vapor recovery and storage system

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Details

123519, 123529, F02M 3302, F02B 4300

Patent

active

057552100

ABSTRACT:
In a fuel discharge preventive device of a gas engine, in order to prevent high-pressure gaseous fuel remaining in a fuel distributing pipe when an engine is stopped, from leaking out of a gaseous fuel injection valve to be discharged to the open air, a fuel shut-off valve is provided in a fuel feed passage through which gaseous fuel is fed to the gaseous fuel injection valve, and a suction passage communicating with a gaseous fuel storing portion is branched off from the fuel feed passage between the gaseous fuel injection valve and the fuel shut-off valve, so that the gaseous fuel in a potion of the fuel feed passage located between the gaseous fuel injection valve and the fuel shut-off valve is stored in the gaseous fuel storing portion after the engine is stopped and hence the fuel shut-off valve is closed, while the stored fuel is purged to the engine when the engine is being operated.

REFERENCES:
patent: 4606319 (1986-08-01), Silva
patent: 4721078 (1988-01-01), Watanabe et al.
patent: 5357935 (1994-10-01), Oxley et al.
patent: 5509393 (1996-04-01), Leaf et al.
patent: 5522369 (1996-06-01), Povinger
patent: 5540208 (1996-07-01), Kikutani
patent: 5592387 (1997-01-01), Shelef et al.

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