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With the increasing competition in the automotive industry, customer experience & satisfaction is at the top of every organization's goals. The customers have evolved & NVH refinement has become the parameter for their decision making in buying a car. The major source of rumble noise in a vehicle is the induced vibrations due to combustion forces in an IC engine. These vibrations are then transferred to the vehicle body through engine mounts. Hence engine mounts play a key role in defining the NVH & the ride performance of any vehicle. However, it is infeasible to validate every mount design through the physical test as it will be both costly & time-consuming. But multiple design iterations can be verified by the CAE approach quite effectively. This paper focuses on the novel CAE approach to evaluate the mount vibrations due to engine dynamics. The process involves preparing a FEA model of the complete Powertrain system.

Radiators are one of the major components in the automotive engine cooling system. The road excitations from the frame to the radiator are dampened using rubber bushes. In this work, we analyzed a radiator sub-assembly with bushes by applying acceleration which are recorded at the center of gravity of the radiator. The radiator is considered as the concentrated mass which is attached to the upper and the lower radiator tank which is further connected to the frame through the bushings. An implicit transient dynamic analysis is set up. The hyper elastic coefficients for EPDM rubber are determined using the experimental data fit and structural damping coefficients are applied. When excited by the acceleration applied at center of the radiator component, the rubber bushes are deformed severely. Moreover, the analysis shows high strains in certain location on the upper bush where the part showed actual failure in the testing.

Offering the most fuel efficient cars to the customer is the biggest challenge for entire auto industry. Increasing engine efficiency and reducing the emissions with higher power is the best way to delight the customers. The demands for high power and better performance have resulted in progressive higher loading on internal components, and are putting challenge for the engine designers and analysts. It is required to discover and implement the most efficient analysis processes to ensure better durability, improved thermal performance and sealing ability of gasket in the main parts of engine during early design phase with keeping focus on development cost. This paper shows the integrated approach of CFD and structural analysis considering the thermal loading and higher cylinder pressures. The study focuses on the evaluation of Gasoline engine component durability and ensuring the gasket sealing during early design stage to reduce the prototyping cost and time.