Fluid sprinkling – spraying – and diffusing – Processes – Of fuel injection
Reexamination Certificate
2006-12-19
2006-12-19
Kim, Christopher (Department: 3752)
Fluid sprinkling, spraying, and diffusing
Processes
Of fuel injection
C239S088000, C239S533700
Reexamination Certificate
active
07150410
ABSTRACT:
A method for controlling injection rate and injection pressure of an electromagnetic fuel injector assembly having a pressure balanced control valve including a solenoid and a valve member subject to the pressure developed by the injector and actuated by the solenoid to close the valve member against the biasing force of a spring. The control valve is supported in a valve bore in an injector body. The method includes the step of providing a first level of current to the solenoid for moving the valve member from an open to a closed position allowing the pressure in the injector to rise, providing a regulated current to the solenoid at preselected times during the injector event to unbalance the forces acting on the valve member thereby slightly unseating the valve member to regulate injection pressure and injection rate of the fuel injector, and ending solenoid current delivery thereby moving the valve member to its open position.
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Brooks & Kushman P.C.
Kim Christopher
Robert & Bosch GmbH
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