ELECTRONIC CONTROL ENGINE MOUNT DEVICE

PROBLEM TO BE SOLVED: To damp vibration caused by a direct injection engine with a small intake pipe negative pressure, a lean burn gasoline engine, or a diesel engine. SOLUTION: Volumes of an air chamber A of a V-ACM (negative pressure active control engine mount) 4 and a main liquid chamber X and a sub liquid chamber Y that are filled with imcompressible fluid and are communicated via a throttle flow channel Z are changed by input vibration of the engine. At this time, a VSV 2 is driven in response to explosion vibration of the engine, and then pressure in the air chamber A is controlled to be a predetermined negative pressure (or positive pressure) by an air pump 3a or atmospheric pressure. A vibration transmitting characteristic of the V-ACM 4 is appropriately variably controlled even in the direct injection engine having small intake pipe negative pressure, the lean burn gasoline engine, or the diesel engine, and hence vibration and nose mainly in an idling operation are largely reduced. COPYRIGHT: (C)2004,JPO