Pressure control valve with flow recovery
AssigneeInternational Engine Intellectual Property Company, LLC
InventorWilliam de Ojeda
Life of this patent
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Abstract
A pressure control valve assembly for controlling fluid pressure to an actuator, the pressure control valve assembly being in fluid communication with an actuating fluid pump and being disposed intermediate the actuator and the pump, includes an energy storage component, the energy storage component acting on a certain volume of actuating fluid under pressure, the stored energy being selectively releasable to the actuator for augmenting the actuating fluid pressure in the actuator. A method of control is further included.
Claims67
A rail pressure control valve (RPCV) assembly for controlling pressure in an accumulator, the accumulator being a rail conveying an actuating fluid, the RPCV assembly being in fluid communication with an actuating fluid pump and the rail, comprising:
- an energy storage component being charged by fluid pressure from the rail, the energy storage component acting on a certain volume of actuating fluid under pressure, the stored energy being selectively dischargeable to the rail for augmenting the actuating fluid pressure in the rail when a drop in fluid pressure is experienced in the rail due to a fuel injection event.
A pressure control valve assembly for controlling fluid pressure to an actuator, the pressure control valve assembly being in fluid communication with an actuating fluid pump and an actuator accumulator, the accumulator being selectively in fluid communication with the actuator, comprising:
- an energy storage component being charged by fluid pressure from the actuator accumulator, the energy storage component acting on a certain volume of actuating fluid under pressure, the stored energy being selectively dischargeable to the actuator accumulator for augmenting the actuating fluid pressure to the actuator accumulator between fuel injection events.
A method of controlling actuating fluid pressure in an accumulator, the accumulator being in fluid communication with an actuating fluid pump and with at least one actuator, comprising:
- charging an energy storage component with fluid pressure from the accumulator;
- after a fuel injection event, detecting an actuating fluid pressure drop;
- acting on a certain volume of actuating fluid under pressure by means of energy charged on the energy storage component;
- and
- selectively discharging energy to the accumulator for augmenting the actuating fluid pressure to the actuator prior to a subsequent fuel injection event.
Dependencies are inferred from the claim text.