A High-Speed Photography Study on Engagement Process of Wet Clutch

摘要

The investigation described in the present work was intended to observe the behavior of lubricating oil film between a single pair of wet clutch plates used in automatic transmissions, taking account of the porous facing on one disk. Film pressure measurements and the most representative engagement characteristics, along with simultaneous visual recordings of the process, were obtained using a highspeed video system. The results clarified the variation of oil film pressure during the engagement process. Moreover, cavitation bubbles appearing over the porous plate surface were observed in the study.