Control of induction system hydrocarbon emissions

Details Control of induction system hydrocarbon emissions Control of induction system hydrocarbon emissions

2007-06-05

2007-06-05

Miller, Carl S. (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel flow regulation between the pump and the charge-forming...

C123S467000

Reexamination Certificate

active

11122174

ABSTRACT:
A method and apparatus for reducing or preventing hydrocarbon emissions from an air induction system of an automotive vehicle during diurnal periods opens the fuel line to ambient fuel tank pressure when fuel pressure in the fuel line decreases due to cooling of the fuel.

REFERENCES:
patent: 4972869 (1990-11-01), Takasaki
patent: 5074272 (1991-12-01), Bostick et al.
patent: 5655892 (1997-08-01), Cherniawski et al.
patent: 5823169 (1998-10-01), Strohl et al.
patent: 6047686 (2000-04-01), Bohringer et al.
patent: 6530364 (2003-03-01), Romanek

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