The electronic hydro mount represents an innovative and enhanced version of the conventional hydraulic mounts. This type of hydraulic mounts is actively controlled, thanks to the actuator, the sensors and the control unit, the hydro mount’s dampening capacity is constantly adapting to the frequency caused by the motor.

 

Whether the car is at idle or in full motion, the electronically controlled hydraulic mount is capable of calculating the isolation characteristics and preventing the vibration from impacting the driving experience.

 

As opposed to the conventional hydraulic mounts, the electro hydro mounts perform smoothly with high and low frequency vibrations. Their dampening capacity is way more efficient thanks to their switching function from a soft to a rigid mode depending on the motion.

 

When the car is on Idle mode, the air suspension function is activated in order to soften the engine mount and let it absorb more vibrations.

 

In other cases, when the car is in full motion, the frequency is lower, the mount becomes hydraulically active limiting the movement of the liquid inside it because of the lack of vacuum. This makes the engine mount stiffer which serves well in limiting the impact of the vibrations on the driving experience.

 

To go through details, the fluid inside the EH engine mount is circulating between one big upper chamber and one small lower chamber through a small channel between the two chambers, with the existence of a small hole permitting air to enter.

 

Below 1100 RPM, the fluid stays in the top chamber due to week vibrations, in addition to that, the air hole stays opened letting the air to circulate which gives the engine mount a soft reactivity and makes it absorb the high frequency vibrations.

 

Above 1100 RPM, the air hole becomes blocked which makes the liquid inside the engine mount unable to circulate and gives the hydraulic engine mount a stiff reactivity towards the low frequency vibrations.