Fuel vapor recirculation device for vehicle

Details Fuel vapor recirculation device for vehicle Fuel vapor recirculation device for vehicle

2008-11-13

2010-12-07

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

C123S519000

Reexamination Certificate

active

07845337

ABSTRACT:
A fuel vapor recirculation device may includes: a canister that is connected with a fuel tank through a vapor line and a purge line configured with a pressure control solenoid valve; a vapor control valve that is disposed on the vapor line and selectively connects the fuel tank and the canister corresponding to operation of an engine control unit; a vapor recirculation valve unit that is connected with the canister, receives fuel vapor from the canister, discharges the fuel vapor to the atmosphere or recirculates the fuel vapor to the canister, and supplies air to the canister; and a one-way check valve that is disposed between the purge line and the canister, wherein the one-way check valve supplies air to the vapor recirculation valve unit when a negative pressure is generated in the purge line.

REFERENCES:
patent: 5635630 (1997-06-01), Dawson et al.
patent: 5878729 (1999-03-01), Covert et al.
patent: 6499472 (2002-12-01), Weldon et al.

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