초록 ▼

An electrically responsive turbocharger control for a turbocharged internal combustion engine includes an electrically operated control device selectively energizable to engage and lock in position the actuator for a wastegate control valve. This control device provides a manner of overriding the no

An electrically responsive turbocharger control for a turbocharged internal combustion engine includes an electrically operated control device selectively energizable to engage and lock in position the actuator for a wastegate control valve. This control device provides a manner of overriding the normal actuating forces acting in the wastegate control valve.

대표청구항 ▼

A turbocharger comprising: a turbine adapted to be rotatably driven by exhaust gas flow from an engine; a compressor rotatably driven by said turbine and adapted to deliver pressurized airflow to the engine; housing means for defining a turbine gas inlet and outlet to direct gas flow to and from sai

A turbocharger comprising: a turbine adapted to be rotatably driven by exhaust gas flow from an engine; a compressor rotatably driven by said turbine and adapted to deliver pressurized airflow to the engine; housing means for defining a turbine gas inlet and outlet to direct gas flow to and from said turbine, and for defining a compressor air inlet and outlet to direct airflow to and from said compressor, said housing means further defining a wastegate passage interconnecting said turbine gas inlet and outlet in bypassing relation to said turbine; a valve in said wastegate passage for modulating the volume of gas flow therethrough in bypassing relation to said turbine, said valve arranged such that pressure of gas flow in said turbine gas inlet urge said valve toward an open position; an actuator operably engaging said valve for moving the latter; biasing means operably engaging said actuator for urging said valve toward a closed position; means for generating an electrical control signal in response to an engine operating parameter; and control means responsive to said electrical control signal for engaging and disengaging said actuator, said control means operable upon engaging said actuator to override the urgings of said biasing means and said turbine inlet pressure and hold said actuator and said valve stationary.