Fuel pump manifold
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United States of America Patent
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-
Nov 8, 1994
Grant Date -
N/A
app pub date -
Feb 8, 1993
filing date -
Feb 8, 1993
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel pump manifold for a no-return fuel system for an automotive engine. The manifold has inlet and outlet passages with a check valve which opens when fuel is supplied to the engine and closes to prevent reverse flow of fuel when the outlet pressure is greater than the inlet pressure and a vent valve between the outlet and inlet and in parallel with the check valve which is normally closed and opens when the outlet pressure exceeds the inlet pressure by at least a predetermined minimum value which is usually the desired minimum pressure of fuel supplied to the operating engine when idling. Preferably, a normally closed pressure relief valve also communicates with the outlet to relieve overpressure of the outlet fuel supplied to the engine.
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