Firstly, the engine mountings are made of high-grade rubber, which is reinforced with steel and other materials. This combination of materials ensures strength, longevity and flexibility. The flexibility of the mountings is important because it allows for the engine to move according to the road's condition and the car's acceleration. Without this flexibility, the engine would transmit extreme vibrations to the car's body and its occupants.
Secondly, the design of engine mountings is also important. A well-designed mounting will help to absorb unwanted vibrations and noise, making the car ride more comfortable. They are usually designed with a hollow cavity in the center, which is filled with oil or hydraulic fluid. The fluid acts as a shock absorber, reducing the vibration further.
Thirdly, the positioning of engine mountings is critical. Modern cars often have multiple mountings, placed in strategic locations to absorb vibrations and maintain the engine's alignment. They are usually attached to the car's frame or subframe and the engine, and sometimes even the transmission or gearbox.
Furthermore, the size and shape of the mounting varies depending on the engine's type and size. For example, a four-cylinder engine will require different mountings compared to a six-cylinder engine or a V8 engine. This is because the engine's weight, size and power output are all different. The mounting must be designed to withstand the specific amount of force that the engine exerts.