【摘 要】
：
The paper provides an investigation into the beat-rattle occurring on a RWD manual transmission at high gear position and under wide open throat condition. Firstly, the sources of beat-rattle are disc
【机 构】
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Changan Auto R&D Center, Changan Automobile Co., Ltd.;State Key Laboratory of Vehicle NVH and Safety
【出 处】
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第19届亚太汽车工程年会暨2017中国汽车工程学会年会
论文部分内容阅读
The paper provides an investigation into the beat-rattle occurring on a RWD manual transmission at high gear position and under wide open throat condition. Firstly, the sources of beat-rattle are discovered to be the engine second order excitation and transmission countershaft rotational excitation, through both experiment and simulation. Secondly, torsional damper is optimized to re- duce the excitation of beat. Thirdly, the relationship between excitation frequency difference and rattle sound quality is investigated on a gear rattle sensitivity test bench, to get the best frequency difference. Finally, a combined solution, consisting of the optimized torsional damper and tuned gear ratio, is applied on the vehicle, and testified to settle the problem of beat-rattle.
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