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Research on Idling Rattle of Manual Transmission
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English
Abstract
Generation mechanism and characteristics of idling rattle are systematized analytically by experiments on vehicle and digital simulation of nonlinear torsional vibration system for an inline four-cylinder four-cycle compact diesel engine.
Jumping and hysteresis of the noise level are caused by both decreasing engine torque fluctuations while engine rotating velocity increases, and clutch-disc torsional characteristics of two-staged hardening spring. An improved clutch disc with a decreased noise level of 5 dB (A) was developed clarifying the optimum combination of disc characteristics, and permitting engine rotating velocity, where jumping occurs, below idling rotating velocity.
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Authors
- Satoru Ohnuma - Truck and Bus Engineering Center Mitsubishi Motors Corp. Tokyo, Japan
- Shigetaro Yahata - Truck and Bus Engineering Center Mitsubishi Motors Corp. Tokyo, Japan
- Mineichi Inagawa - Truck and Bus Engineering Center Mitsubishi Motors Corp. Tokyo, Japan
- Tsutomu Fujimoto - Truck and Bus Engineering Center Mitsubishi Motors Corp. Tokyo, Japan
Topic
Citation
Ohnuma, S., Yahata, S., Inagawa, M., and Fujimoto, T., "Research on Idling Rattle of Manual Transmission," SAE Technical Paper 850979, 1985, https://doi.org/10.4271/850979.Also In
References
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