Throttle valve device for an internal combustion engine

摘要

A motor-driven throttle valve control device has a main body in which an air intake path is formed. The throttle valve is secured on a rotatable shaft supported by the main body. An electric motor drives the throttle valve through a gear mechanism. A throttle valve sensor is provided to detect the valve opening angle. Default and return springs are provided to bias the throttle valve. The main body includes a cover at one end of the throttle shaft. The gear mechanism, angle sensor and default and return springs are located between the cover and the main body of the throttle valve device.