System and method of managing pressure in a fuel system

Details System and method of managing pressure in a fuel system System and method of managing pressure in a fuel system

2005-05-10

2005-05-10

Miller, Carl S. (Department: 3747)

Internal-combustion engines

Charge forming device

Having fuel vapor recovery and storage system

C137S557000, C073S301000, C073S749000

Reexamination Certificate

active

06889669

ABSTRACT:
A system and method of managing fuel vapor pressure in a fuel system. The direction of air flow between first and second ports on either side of a chamber is controlled by a liquid that divides the chamber into first and second portions. A leak detection test, excess vacuum venting, and pressure blow-off of the fuel system are controlled by displacement of the liquid.

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