Purge system for internal combustion engine

Details Purge system for internal combustion engine Purge system for internal combustion engine

2007-10-23

2007-10-23

Gimie, Mahmoud (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

Reexamination Certificate

active

11723381

ABSTRACT:
A canister is connected with a fuel tank to adsorb fuel vapor generated in the fuel tank. The canister is also connected to a downstream side point of an intake air pipe, which is on a downstream side of a supercharging device, through a first purge line. The canister is also connected to an upstream side point of the intake air pipe, which is on an upstream side of the supercharging device, through a second purge line. An ECU opens a first valve of the first purge line and a second valve of the second purge line to generate an air flow through the first connection passage, the canister and the second connection passage to desorb the fuel vapor from the adsorbent and to purge the desorbed fuel vapor into the intake air passage in an operational period of the supercharging device.

REFERENCES:
patent: 5005550 (1991-04-01), Bugin et al.
patent: 5183023 (1993-02-01), Hanson
patent: 5979418 (1999-11-01), Saruwatari et al.
patent: 6138644 (2000-10-01), Saruwatari et al.
patent: 11-287162 (1999-10-01), None

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