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Development of a New Manual Transmission for a 3-Liter Class Vehicle

Article of Honda R&D Technical Review Vol.14 No.2

Summary

A new 6-speed manual transmission for 3 L class engines has been developed as Honda’s top-of-the-line manual transmission. To be mounted on different models, this transmission was given the capability to employ a wide range of gear ratios and to handle high torque while keeping its total length equal to transmissions for 2 L class. Computer aided engineering (CAE) analysis was used to enhance the gear stiffness in order to cope with higher power outputs. The inside surface of the case was made smooth and a force feed lubrication system driven by an oil pump has been used to reduce oil agitation loss in order to curb a rise in oil temperature at high travel speeds. Much emphasis was put on reducing the weight of each component, which resulted in a 3 L class transmission with the weight equal to 2 L class. In order to realize the level of quality appropriate for our top-of-the-line vehicles, the transmission has been equipped with a constant-mesh reverse gear and a dual mass flywheel.

Reference

(1) Murai, A., et al: Sporty Change Feeling in the S2000, HONDA R&D Technical Review, Vol. 11, No. 2, pp. 73-78 (1999)

Author (organization or company)

Shinji FUJIMOTO(Tochigi R&D Center)、Hideo UDOU(Tochigi R&D Center)、Kyouji KITAJIMA(Tochigi R&D Center)、Shogo KOBAYASHI(Tochigi R&D Center)、Kouji OKAZAKI(Tochigi R&D Center)

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