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이현구(Hyunku Lee),김무석(Moosuk Kim),황선양(Seonyang Hwang),권오준(Ohjun Kwon),강구태(Kootae Kang) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
This paper shows a whole noise developing procedure and items for the new developed 6th speed automatic transmission. Through the planetary operating frequency analysis, predict the planetary gear noise problem. To reduce this noise, one-way clutch, input shaft length, and valve body cover shapes were changed. To develop the transfer gear and differential gear noise quality, analysis procedure and experimental tests are also done and fix the tooth tolerance specifications. And gear grinding methods are also used . Due to demands for developing and reducing the serious abnormal bearing noise, oil pump noise and torque converter noise, some special test procedures and specifications are developed and adapted. By using the acoustic camera and lazer-vibrometer, radiation noise could be handled and reduced quickly and effectively. The whole developing process and results will offer good guides to the engineers who develop the next generation transmission.