Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Chang Hyun Shin0
Date of Patent
June 24, 2008
Patent Application Number
11022231
Date Filed
December 23, 2004
Patent Primary Examiner
Patent abstract
A fuel pump noise-reduction apparatus in a Liquefied Petroleum Injection (LPI) vehicle comprises a Liquefied Petroleum Gas (LPG) switch. A plurality of shut off valves are configured for activation upon stoppage of battery power via the LPG switch. A fuel pump in a fuel tank is configured for activation upon stoppage of battery power via the LPG switch. The shut off valves close and the fuel pump stops simultaneously when the LPG switch is deactivated, contributing to a reduction in noise and engine output consumption due to unnecessary operation of the fuel pump when the engine stops.
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