Electrically controlled fuel supply pump for internal combustion engine
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United States of America Patent
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Sep 24, 2002
Grant Date -
N/A
app pub date -
Jan 11, 2001
filing date -
Jul 13, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention concerns a pump with an electric motor pumping fule in a fuel tank and supplying a ramp of injectors aided by a fuel pressure regulator. The pump motor is controlled by a control unit for adjusting the pump output pressure, evaluated by a relationship between said pressure and at least a mean current of the pump motor, at an objective pressure level determined by the control unit and selected higher than the operating pressure of the regulator, such as a pressure-reducing valve, and whereof the pressure characteristic is known to the control unit. The invention is useful for supplying fuel to direct or indirect injection engines in motor vehicles.
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