Discharging by-pass for high pressure direct injection pump
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United States of America Patent
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-
Jan 9, 2001
Grant Date -
N/A
app pub date -
Oct 29, 1999
filing date -
May 9, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention concerns a relief device for a high-pressure direct-injection pump supplying petrol to an automobile vehicle engine injector manifold, the pump being supplied with fuel by a low-pressure electric fuel pump communicating with a fuel tank and the high pressure delivered being regulated by a pressure regulator, said pressure regulator taking the form of a three-way valve supplying fuel to the manifold via the fuel pump below a predetermined engine rotation speed threshold and then supplying the manifold via the top part of the injection pump when the engine speed is above the predetermined threshold.
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