Patent ID: 9676264
Date: 2017-06-13
CPC Classifications: B60K,F16F

Claim:
1. An active engine mount that has a liquid chamber for keeping liquid in a housing, the active engine mount comprising: a separation plate that is disposed in the liquid chamber, has a space at its center, and divides the liquid chamber into an upper liquid chamber and a lower liquid chamber; at least one primary flow path that connects the upper liquid chamber and the lower liquid chamber; an orifice plate that is disposed under the space at the center of the separation plate and has at least one bypass flow path connected with the lower liquid chamber; and an air chamber that is disposed between the orifice plate and the space at the center of the separation plate and is configured to open or close the at least one bypass flow path by changing its size; and a piston connected to a bottom of the air chamber and configured to move towards and away from the air chamber in an up and down direction; wherein the air chamber is contracted or expanded by pneumatic pressure adjusted by towards the upper and lower sides movement of the piston.