PIEZOELECTIC VALVE SYSTEM

摘要

A valve system having a valve operated by a piezoelectric device (122) to control the flow of fluid through the valve system. Movement of the valve is controlled by a pre-stressed bender actuator (122) that changes its shape by deforming in opposite axial directions in response to a control signal applied by an actuator control system. The valve system may comprise a common rail fuel injector (100a), electrohydraulic actuator system, electronically-controlled fuel injector, gasoline port injector, fluid metering valve, relief valve, reducing valve, direct valve or direct-injection gasoline injector.