Abstract
The paper presents tools for vibration evaluation of power train mounting system of a passenger car to meet demands for passenger’s comfort. The computational model is based on the Multi-Body System principles and includes submodules as are engine, clutch, gearbox, final drive, drive shafts and rheological models of all power train mountings. Simulation results are validated on account of measurement of power train vibration at different engine load conditions. Both simulation and measurement are carried out at power train of the European B-segment car with an in-line three-cylinder spark-ignition engine and manual gearbox. Presented methodology can bring time and cost savings particularly during mountings design process.
Highlights
An internal-combustion engine is one of the main sources of vibration transmitted to the vehicle body as a result of engine’s working principle
Without a good isolation, accompanying dynamic disturbances could cause a rapid fatigue of vehicle components and a huge discomfort for the passengers and this is the reason why the power train mounts have to be an integral and essential part of power train development
The final design of the power train mounts has to be a compromise between these requirements
Summary
An internal-combustion engine is one of the main sources of vibration transmitted to the vehicle body as a result of engine’s working principle. As the response to this challenge, traditional physical prototyping and testing (highly time-consuming and expensive processes) are gradually being replaced by virtual prototyping and simulations, including components from rubber-like materials. This way of development has been more or less overlook in this case of rubber components, partially due to problematic modelling of complex characteristics of rubber, and due to limited understanding of the COMPUTATIONAL MODELLING AND MEASUREMENT OF VIBRATION OF POWER TRAIN MOUNTINGS OF A PASSENGER CAR. This article presents potential in inclusion of rubber-like components into power train unit simulations
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