Step by step guide on how an automotive engine mount works, this information
pertains to most vehicles.
Step 1 - Engine mounts are designed to isolate the vehicle
from vibrations and harmonics created by the engine. Created using two metal plates
vulcanized together with a sizable piece of rubber or a liquid filled bladder. The
lower plate is bolted to the frame whereas the upper metal plate bolts to the engine
allowing slight movement from the engine. These mounts are also used for the transmission,
and perform the same operation. In a rear wheel drive vehicles there are usually
two mounts, one on either side of the engine, with one mount used for the transmission.
Front wheel drive applications may incorporate more mounts to help control engine
torque. Front wheel drive vehicles sometimes incorporate a “dog bone” or torque
mount to control the twisting of the engine.