Chokkalingam, V. and Rao, M., "Durability Enhancement of Powertrain Mounts for an Off-Road Commercial Vehicle," SAE Technical Paper 2014-01-2312, 2014, doi:10.4271/2014-01-2312.
The durability of the components in a vehicle plays one of the major roles in its life cycle cost. The powertrain mount is one such component since its rubber characteristics have significant impact on the vehicle's NVH and fatigue life. This paper presents the enhanced durability benefits obtained by changing the polymer composition, manufacturing methods and design optimization of a powertrain mount for an off-road commercial vehicle.The methodology involved characterization of the existing mount, arriving a new compound formulation, making of prototypes, experimental validation for durability and repeatability in the laboratory combined with rigorous on field vehicle trials. NVH measurements were also carried out on the improved mounts. The above exhaustive exercise resulted in the development of a comprehensively far better mount than an existing mount with improved durability without compromise on NVH properties. The cost benefit in terms of the total vehicle life was enhanced to a large extent.