Throttle controlling device

摘要

The invention relates to an electronic control throttle body (30) having a default mechanism for securing the self-propelling of a vehicle at the time of faulty. A throttle control unit (100) controls the position of a throttle valve (32) by using a motor (34) on the basis of a target throttle valve opening degree obtained by an engine control unit (10). In this respect, when the target throttle valve opening degree inputted from the engine control unit (10) crosses over a default opening degree &thetas;0 of a default mechanism, an integration value having been added is set to 0, and an integration value having been calculated hereinafter is added to the set value to thereby perform a feedback control