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Vibration Control of a Diesel Auto-Riksha using Low-cost Passive Engine-Mounts
Technical Paper
978458
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English
Abstract
High idling vibrations of a single cylinder Diesel engine proved to be a cause of discomfort for passengers of an Auto-Riksha (3-wheeler). Extensive vibration measurements identified rolling resonance of the engine-mount system.
This paper presents mathematical and experimental work to seek directions of the vibration control with low cost passive engine mounts. The work covered study of
- 1)use of softer rubber mounts at the engine-base
- 2)placing stiff rubber mounts closer to the Principal Roll-Axis of the engine
- 3)separate use of a Tie-Rod and Hydraulic Dampers between the engine and chassis
- 4)limitations of a Decoupled engine-mount configuration.
Overall assessment of these methods was carried out by Eigen Analysis of a Lumped Mass Model of the engine-mount system as well as by measurement of the vehicle vibrations over a wide speed range. It was revealed that requirements of the vibration isolation in both low & high frequency range and that of fatigue life of the rubber isolators imposed a limit on the performance extracted from the passive engine-mounts.
Authors
Topic
Citation
Ambardekar, M., Patil, A., and Jahagirdar, A., "Vibration Control of a Diesel Auto-Riksha using Low-cost Passive Engine-Mounts," SAE Technical Paper 978458, 1997.Also In
References
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