Patent ID: 8337143
Filing Date: 2012-12-25
Classification: F02D,Y02T

Abstract:
1. An electronic actuator in a turbocharger of a vehicle comprising: an electronic control unit provided to the vehicle; a microcomputer for controlling operation of a vane of the turbocharger according to a PWM (Pulse Width Modulation) signal from the electronic control unit; and an actuator unit having a motor of which operation is controlled by the PWM signal from the microcomputer, wherein the microcomputer forwards PWM signals different from one another to the motor for controlling an overcurrent; wherein the electronic control unit performs a signal control step including a step of following up the present position of the vane and applying a current corresponding to a target signal to the motor, wherein the signal control includes a first control step including a step of applying an increased current to the motor during a t wherein the signal control step includes an overcurrent control step for controlling an overcurrent to prevent the overcurrent from being applied to the motor, wherein the overcurrent control step includes: