Husco International, Inc.

Curtis L VanWeelden

Kathryn Irene Bacon

Michael C Layne

A gasoline direct injection system of an engine has a high pressure pump with an output connected to a fuel rail that supplies a plurality of fuel injectors. A control valve is connected in parallel with the pump to maintain the fuel rail pressure at a consistent level as the fuel injectors open and close. A valve element engages and disengages a seat to control the flow of fuel through the control valve. The high pressure from the fuel supply rail acts on surfaces of the valve element which are designed to produce a force imbalance that serves to rapidly open the control valve. An electromagnetic actuator, that closes the control valve, has a low impedance coil and pole pieces made of soft magnetic composite material to minimize eddy currents that impede valve performance.

Motor vehicle fuel injection system with a high flow control valve

A flow control valve is intended for use in a gasoline direct injection system of an engine to maintain the fuel rail pressure at a consistent level as the cylinder injector valves open and close. A valve element moves against and away from a seat to control the flow of fuel through the valve. The high pressure from the fuel supply rail acts on surfaces of the valve which are designed to produce a force imbalance that serves to rapidly open the valve element. The electromagnetic actuator has components fabricated from a soft magnetic composite material which reduce eddy currents that could impede performance of the valve. The electromagnetic actuator is sealed so that that the fuel does not impede movement of the components. A low impedance coil also is used to operate the valve.

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Sussex, WI, United States of America

Curtis L VanWeelden