Apparatus and method for sensing movement of fuel injector valve

Details Apparatus and method for sensing movement of fuel injector valve Apparatus and method for sensing movement of fuel injector valve

1996-12-03

1998-04-14

Moulis, Thomas N.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123494, 137554, F02D 3100, F16K 3700

Patent

active

057380716

ABSTRACT:
An apparatus and methods are provided for sensing movement of a fuel injector valve of a fuel injection system. The apparatus preferably includes a fuel pump for pumping fuel to flow to a combustion chamber of an engine and a first valve positioned in fluid communication with the fuel pump for allowing fuel to flow directly into the combustion chamber when in an open position. A second valve is positioned in fluid communication with the first valve and the fuel pump for allowing fuel to flow to the first valve when in an open position. A second valve actuator is positioned responsive to desired fuel injection for actuating the second valve. A sensor is positioned to sense movement of the first and second valves and the actuation of the second valve actuator. A movement differentiator is preferably positioned responsive to the sensor for differentiating a time of moving of the first valve from the time of moving of the second valve and the actuation of the second valve actuator.

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