Variable valve timing control device for internal combustion engine, and control method

摘要

The present invention relates to variable valve timing control device and control method, which change valve timing of an internal combustion engine. An operation amount for controlling the valve timing is computed, and an operation amount computed at position detection timing of a valve timing control system is divided and output until next position detection timing.

主权项

1. A variable valve timing control device of an internal combustion engine, the variable valve timing control device controlling a valve timing control system that controls valve timing of the internal combustion engine, comprising:
an electronic control unit configured to adjust a valve timing in response to receiving an operation amount of the valve timing control system, the electronic control unit calculating a brake operation amount for controlling the valve timing, and dividing the brake operation amount calculated by the electronic control unit at position detection timing of the valve timing control system, and outputting a divided brake operation amount until next position detection timing, wherein the electronic control unit is configured to control a division method of the brake operation amount to switch so that the effective current cannot be increased when an environmental temperature reaches a high temperature, or to switch in response to a drive power supply voltage for a motor that drives the valve timing control system, and a number of divisions of the operation amount is increased when the drive power supply voltage for the motor that drives the valve timing control system is low.