Antidissipation apparatus for evaporated fuel vapor

Details Antidissipation apparatus for evaporated fuel vapor Antidissipation apparatus for evaporated fuel vapor

1998-05-12

2000-01-18

Miller, Carl S.

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

123516, F02M 3704

Patent

active

060149582

ABSTRACT:
An antidissipation apparatus for evaporated fuel vapor for an internal combustion engine. A purge passage connects the intake manifold and the fuel tank. A canister is installed in the purge passage and adsorbs evaporated fuel vapor generated in the fuel tank. A purge pump is installed in the purge passage and delivers the adsorbed evaporated fuel vapor to the intake manifold. Since the purge pump is driven by at least a part of a fuel flow in the fuel passage, the purge pump can change its discharge amount of the adsorbed evaporated fuel vapor to the intake manifold according to an amount of the fuel flow in the fuel passage. Therefore, the evaporated fuel vapor which is adsorbed at the canister can be supplied (purged) to the intake manifold by the purge pump forcibly even if the engine is a lean-burn type which can not employ large negative pressure of the intake manifold.

REFERENCES:
patent: 5377644 (1995-01-01), Krohm
patent: 5390645 (1995-02-01), Cook
patent: 5411004 (1995-05-01), Busato
patent: 5460141 (1995-10-01), Denz
patent: 5474047 (1995-12-01), Cochard
patent: 5483942 (1996-01-01), Perry
patent: 5499613 (1996-03-01), Bayerle
patent: 5511529 (1996-04-01), Blumenstock
patent: 5596972 (1997-01-01), Sultan

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