Air duct for engine

Details Air duct for engine Air duct for engine

2008-12-05

2011-12-27

Huynh, Hai (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

C123S590000, C123S184210, C123S19800E

Reexamination Certificate

active

08082906

ABSTRACT:
An air duct13connected to the intake system of an engine12has a duct main body13A and a cylindrical fuel adsorption filter19having air permeability. The fuel adsorption filter19is located in the duct main body13A. The fuel adsorption filter19is arranged to be coaxial with respect to the duct main body13A. A gap21is defined between the inner circumferential surface of the duct main body13A and the outer circumferential surface of the fuel adsorption filter19. An opening22for drawing air flow into the gap21is formed between an air flow upstream side of the gap21and an air passage area of the duct main body13A.

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