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What is an Engine Mount?

Oct 09,2023

What is an Engine Mount?

An engine mount is exactly what it sounds like: it holds the engine of a vehicle or piece of equipment in place. The engine and transmission of a vehicle are attached to one another. In many cases the engine mounts need to do more than just hold the engine to the chassis, they also need to absorb the energy (vibration) produced from the engine from transferring to the other parts of the equipment.

The basic principle is how to strike a balance between the amount of energy absorption and the movement that can take place (sway space). A piece of equipment may use anywhere from 3-8 mounting points, some for the transmission and some for the engine, to hold everything in place. Understanding how these work together and influence how the system performs is where the detailed experience and analytical tools come into play.

Engine mounts are also used as vibration dampeners, in effect they are absorbing energy from the system and generating heat. This is often why rubber is the material of choice when it comes to engine mount design, it has excellent damping and heat dissipation characteristic with a high degree of design flexibility. The main goal of a vibration mount is to create a rubber break between two mating systems (engine and chassis). Rubber and elastomers work better at absorbing vibration and noise than virtually any other material, especially when compared to metal or solid engine mounts.
 

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