Abstract

To increase the durability of multiple-plate clutches used in automatic transmissions, attention was focused on the wear history of the facing material. Measurements have confirmed that correlations can be observed between initial wear and disk contact pressure when the clutch is engaged, and between steady wear and plate temperature. Next, simulation technology was developed to quantify the disk contact pressure and plate temperature. When simulated contact pressure distribution and temperature distribution were used to establish correlations with durability wear, good proportional relationships were found in both cases. It was also found that when clutch specifications and driving conditions were varied, the gradient of the correction also varied, but the correlation remained proportional so long as the same facing material was used. The gradient was ranked as a wear property peculiar to the facing material. By determining the wear property of the facing material, it was possible for the first time to predict wear condition in a test of the clutch as an independent part, for any arbitrary set of clutch specifications and driving conditions.

References

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Author (organization or company)

• Toshihiro SAITO（Tochigi R&D Center）
• Tamotsu KOTEGAWA（Automobile R&D Center）
• Yoshiteru MATSUURA（Automobile R&D Center）
• Seiichi TANAKA（Automobile R&D Center）
• Kimikazu OHTSUKI（Automobile R&D Center）

Publication Information

Article of Honda R&D Technical Review Vol.18 No.2 (155 - 162)

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Citation Information