Abstract
The optimal design of driveline components in passenger vehicles requires detailed knowledge of the effects that load case scenarios introduce into the system. In many cases the latter are difficult to obtain, since a large number of tested cases are required experimentally. Excessive torque loading often occurs during driveline ‘clutch abuse’ events, where the clutch is suddenly engaged and a transient power wave is transmitted across the driveline. This work details the development and validation of a numerical tool, which can be used to simulate such abuse scenarios. The scenario examined consists of a sudden clutch engagement in first gear in a stationary vehicle. The numerical model is validated against experimentally measured torque data, showing fairly good agreement. A set of parametric studies is also carried out using a numerical tool in order to determine the driveline parameters of interest, which affect the generated torque amplitudes.
Highlights
The design of automotive drivetrains introduces factors which influence the performance of modern vehicles, including energy efficiency, noise, vibration and harshness (NVH), durability, weight and cost
The strength requirements for drivetrain components are determined by considering the worst possible loading scenarios, which arise when high torque demands are applied to the driveline because of sudden clutch engagements
The ability to describe accurately these drivetrain abuse scenarios allows the design of more energy-efficient and cost-efficient components
Summary
The design of automotive drivetrains introduces factors which influence the performance of modern vehicles, including energy efficiency, noise, vibration and harshness (NVH), durability, weight and cost. Targets, such as the requirement for a vehicle driving life of 240,000 km tend to become standards, affecting the durability perception. The majority of research studies available in the literature have focused on the NVH characteristics of drivetrains. This has become an increasingly important topic, since it directly relates to the comfort of the passengers and their perception about vehicle quality. Many of the methods already employed are directly transferrable to the current work
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Schedule a callMore From: Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
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