Patent Number: 6,253,733

Title: Electronic throttle valve control apparatus

Abstract: An apparatus of controlling an electronically controllable throttle valve for car has a sensor for detecting the opening of the throttle valve and a microcomputer. A throttle valve opening command value is delivered in the form of a digital signal under the control of the microcomputer. The digital command value signal is converted into an analog signal and on the basis of the analog signal and a detected throttle opening, a motor connected to the throttle valve is driven to control the opening thereof.

Inventors: Marumoto; Katsuji (Hitachi, JP), Hoshino; Masatoshi (Tsuchiura, JP), Masaki; Ryozo (Hitachi, JP), Ohsuga; Minoru (Hitachinaka, JP), Watabe; Mitsuru (Ibaraki-ken, JP)

Assignee: Hitachi, Ltd.

International Classification: F02D 11/10 (20060101); F02D 041/20 ()

Expiration Date: 07/03/2018