TROUBLE DETECTOR OF VEHICLE HAVING DECELERATION IDLING-CYLINDER ENGINE

摘要

A trouble detector of a vehicle having a deceleration idling-cylinder engine capable of idling a part of the cylinders by allowing the hydraulic pressure of hydraulic oil to close both an intake valve and an exhaust valve and releasing the closed state of both the intake valve and the exhaust valve by allowing the hydraulic pressure of the hydraulic oil to relatively act on the cylinder idling releasing side route, characterized by comprising a hydraulic pressure condition determination means for determining whether or not an output value from a POIL sensor for detecting a hydraulic pressure in a cylinder idling releasing side route can meet the requirements of the thresholds of the hydraulic pressure of the hydraulic oil in each operating state of the vehicle (Steps S204, S212) and an abnormality determination means for determining to be abnormal when the hydraulic pressure of the hydraulic oil is determined not to meet the requirements of the thresholds of the hydraulic pressure of the hydraulic oil by the hydraulic pressure condition determination means (Steps S207, S215), whereby a trouble can be surely detected by primarily monitoring the hydraulic pressure of the hydraulic oil.