Patent ID: 9605727
Date: 2017-03-28
CPC Classifications: B60K,F16F

Claim:
1. An active engine mount for a vehicle, comprising: an upper body which has a main rubber and an upper liquid chamber; a lower body which is coupled to a lower portion of the upper body; an orifice circular plate which divides an interior of the upper and lower bodies into the upper liquid chamber and a lower liquid chamber inside the upper and lower bodies and which has an orifice through which a fluid flows between the upper and lower liquid chambers; a diaphragm which is installed below the orifice circular plate inside the upper and lower bodies and which forms the lower liquid chamber; a semi-active mount which is in contact with a central portion of the diaphragm by a plunger inside the lower body and which operates by an electromagnet, a hole which is formed at a central portion of the orifice circular plate; a first fluid entrance hole which is formed at an end of the edge of the orifice to communicate with the lower liquid chamber and a second fluid entrance hole which is formed at an opposite end of the orifice at the central portion of the orifice circular plate to communicate with the upper liquid chamber; and a switching valve is configured to selectively open or close the hole in a position to cover the hole at the central portion of the diaphragm and to compressively deform by pressure of the fluid in the upper liquid chamber.