Engine Vibration-Dampening (Reduction) through Split Engine Mounting Arm for Passenger Vehicle

Automotive industry is focusing on NVH reduction and customer comfort for passenger vehicle. Structural optimization is a one of the effective tool to obtain an optimum design to achieve NVH reduction. For an internal combustion engine, there exist two basic dynamic disturbances: a) the firing pulse due to the explosion of the fuel in the cylinder and b) the inertia force and torque caused by the rotating and reciprocating parts (piston, connecting rod and crank).

The usage of engine mounts is the best solution for dampening the effect of vibrations and transmitting forces between the engine and the automotive body structure. In this paper, application of structural optimization in the design of a engine mount has been carried out. Effort has been taken to develop engine-mounting arm with two different designs solution. Further, engine with two different configurations has been tested at Engine test bed and vehicle level to understand the behaviour in real environment. Further results has been compared and analysed for both configuration and further actions proposed.