Variable nozzle control apparatus of turbocharger

A variable nozzle control apparatus adapted for a turbocharger in an engine comprising:

• a variable nozzle having a vane;
• an engine electronic control unit for identifying an operating situation of the engine by detected outputs of sensors in the engine and outputting an opening indication information of the vane;
• and
• an electronic control actuator for controlling an opening of the vane in response to the an opening indication information of the vane transmitted from the engine electronic control unit,
• wherein the electronic control actuator comprises:
• an electronic control circuit section for receiving the an opening indication information of the vane from the engine electronic control unit and outputting an output signal;
• a driving section for receiving the output signal from the electronic control circuit section and driving the vane of the variable nozzle through an output shaft;
• and
• an angle sensor for detecting a rotation angle of the output shaft to output an actual angle signal of the output shaft to the electronic control circuit,
• wherein the electronic control circuit section comprises:
• an angle signal converting device for converting the an opening indication information of the vane into a target angle signal of the output shaft,
• a comparing device for comparing the target angle signal from the angle signal converting device with the actual angle signal from the angle sensor, and outputting an indication signal corresponding to a difference between the target signal and the actual signal,
• a calculating device for carrying out a calculation processing over the indication signal transmitted from the comparing device, and
• a motor driving logic generating device for inputting the output signal to a motor driver of the driving section wherein the electronic control circuit section further comprises:
• a wiping command device for outputting a command signal to execute a wiping operation for causing the vane to be stopped in a full open position via a full closing position at least once in a full operating region of the vane of the variable nozzle by a status indication information transmitted from the engine electronic control unit based on a stop of the engine by an OFF operation of an ignition switch;
• and
• a wiping processing device for introducing the command signal of the wiping command device into the motor driving logic generating device.

A variable nozzle control apparatus adapted for a turbocharger in an engine comprising:

• a variable nozzle having a vane;
• an engine electronic control unit for identifying an operating situation of the engine by detected outputs of sensors in the engine and outputting an opening indication information of the vane;
• and
• an electronic control actuator for controlling an opening of the vane response to the an opening indication information of the vane transmitted from the engine electronic control unit,
• wherein the electronic control actuator comprises:
• an electronic control circuit section for receiving the an opening indication information of the vane from the engine electronic control unit and outputting an output signal;
• a driving section for receiving the output signal from the electronic control circuit section and driving the vane of the variable nozzle through an output shaft;
• and
• an angle sensor for detecting a rotation angle of the output shaft to output an actual angle signal of the output shaft to the electronic control circuit, wherein the electronic control circuit section comprises:
• an angle signal converting device for converting the an opening indication information of the vane into a target angle signal of the output shaft,
• a comparing device for comparing the target angle signal from the angle signal converting device with the actual angle signal from the angle sensor, and outputting an indication signal corresponding to a difference between the target signal and the actual signal,
• a calculating device for carrying out a calculation processing over the indication signal transmitted from the comparing device, and
• a motor driving logic generating device for inputting the output signal to a motor driver of the driving section,
• wherein the driving section comprises:
• the motor driver for receiving the output signal from the electronic control circuit and outputting a driving signal;
• and
• a motor section driven by the driving signal and coupled to the output shaft though a reduction gear mechanism, and the output shaft driving the vane of the variable nozzle.