Method for controlling fuel rail pressure

Details Method for controlling fuel rail pressure Method for controlling fuel rail pressure

2002-03-27

2003-06-24

Miller, Carl S. (Department: 3746)

Internal-combustion engines

Charge forming device

With fuel pump

C123S494000

Reexamination Certificate

active

06581574

ABSTRACT:

TECHNICAL FIELD
The present invention generally relates a method of controlling the fuel pressure within the fuel rail of an internal combustion engine.
BACKGROUND
Within an internal combustion engine fuel delivery system, a fuel rail delivers fuel to fuel injectors that inject the fuel into the cylinders of the engine. The pressure of the fuel being injected through the fuel injectors is critical, therefore it is important to keep the pressure within the fuel rail as consistent as possible. Closed loop control systems for controlling the fuel pressure within fuel rails have been developed, but do not adapt to system variations such as part-to-part tolerance differences and wear. Therefore, there is a need for an improved method of controlling the fuel pressure within the fuel rail of an internal combustion engine.


REFERENCES:
patent: 5237975 (1993-08-01), Betki et al.
patent: 5579738 (1996-12-01), Frischmuth et al.
patent: 5819709 (1998-10-01), Holmes et al.
patent: 6223731 (2001-05-01), Yoshiume et al.
patent: 6293757 (2001-09-01), Oda et al.
patent: 6349700 (2002-02-01), Buckland et al.

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