Apparatus and method to detect fuel leak in a zero-vapor fuel system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Sep 30, 2003
Grant Date -
Oct 25, 2001
app pub date -
Jan 25, 2001
filing date -
Jan 26, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A fuel delivery system of an automobile that eliminates the vapor canister and includes leak detection of the fuel tank while also permitting failsafe operation when there is a leak in the fuel tank. The fuel tank includes a flexible member defining a first chamber that stores fuel in a chamber devoid of air while a second chamber is at ambient pressure. The fuel system can be formed as a module for installation or retrofitting to various applications using an internal combustion engine, including automobiles. A method of operating the fuel system to purge fuel vapor is also disclosed. A method of preventing fuel leaks is additionally disclosed.
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