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Inertia Valve (Non Return) Fuel Feed / Return Line

IP.com Disclosure Number: IPCOM000033662D
Publication Date: 2004-Dec-21
Document File: 1 page(s) / 7K

Publishing Venue

The IP.com Prior Art Database

Abstract

81040149 This invention has been driven by events seen on disel vehicles, post test crash. Typically, diesel vehicles have a number of fuel system components (filter/pump/hand primer/temp manifold/fuel lines & connectors)located in the engine compartment. It is known that these components can be damaged during a high speed frontal crash event. Rollover rig tests have shown that it is possible for the damaged components to leak fuel, from the fuel tank, via the fuel feed/return lines

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This invention has been driven by events seen on diesel vehicles, post test crash. Typically, diesel vehicles have a number of fuel system components (filter/pump/hand primer/temp manifold/fuel lines & connectors) located in the engine compartment. It is known that these components can be damaged during a high speed frontal crash event. Rollover rig tests have shown that it is possible for the damaged components to leak fuel, from the fuel tank, via the fuel feed/return lines. Proposed valve will restrict/eliminate fuel flow from the fuel tank (siphonic action) via the fuel feed line, in the event of a frontal crash event & subsequent rollover. The valve is activated by the g loads induced by the impact.

With respect to the fuel return tube, controlling fuel flow can be achieved by the fitment of a `duck bill` valve to the fuel delivery module located in the tank. Due to the direction of the fuel flow, the feed line is more difficult.

Valve incorporates a steel ball which is held in position by flexible legs. Under normal operating conditions, the position of the ball is such that it will not influence the flow of fuel in the feed & return lines. The valve is positioned inline with the vehicles longitudinal axis. During a frontal impact event, g loads will induce the ball to be displaced into a position which will restrict the flow of fuel from the fuel tank. The fingers are so designed to hold the ball in the shut position. It is also that the valve is incorporated in a sta...