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Fuel pump noise-reduction apparatus in liquefied petroleum injection vehicle

US-7389761-B2

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.

Patent figures（4）

US-7389761-B2 figure 1
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US-7389761-B2 figure 2
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US-7389761-B2 figure 3
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US-7389761-B2 figure 4
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