Patent ID: 7131321
Filing Date: 2006-11-07
Classification: F02D,Y02T

Abstract:
1. An abnormality determination apparatus of a throttle control system, which includes a throttle valve of an internal combustion engine mounted in a vehicle and a throttle actuator for actuating the throttle valve and controls an angle of the throttle valve by controlling the throttle actuator, the abnormality determination apparatus comprising: determining means for determining existence or nonexistence of an abnormality in a throttle system including the throttle control system and parts related to the throttle control system, based on an abnormality determination condition; and changing means for changing the abnormality determination condition in accordance with operating states of the vehicle and/or the engine so that the abnormality in the throttle system can be detected earlier in an operating area where an influence of the abnormality in the throttle system on the operating state of the engine is significant than in an operating area where the influence of the abnormality in the throttle system on the operating state of the engine is insignificant.