Fuel-injection system
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United States of America Patent
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Oct 19, 2004
Grant Date -
Mar 6, 2003
app pub date -
Aug 2, 2002
filing date -
Sep 5, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
In a fuel-injection system with a pressure regulator disposed in the middle of a fuel supply line and located upstream of a fuel injector for regulating the pressure of fuel flowing through the fuel supply line and for returning surplus fuel via the pressure regulator into a fuel tank, a reflux pipe arrangement is located downstream of the fuel injector and connected at one end to the downstream end of the fuel supply line and connected at the other end to the fuel tank. A reflux control device is disposed in the middle of the reflux pipe arrangement for controlling a flow rate of the fuel flowing through the reflux pipe arrangement. The reflux control device is comprised of a reflux control valve or a fluid-flow restriction orifice member.
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