Manual Transmission Efficiency Trends and Characteristics
942274
11/01/1994
- Event
- Content
- This paper presents a discussion on manual transmission torque losses and focuses specifically on the relationship between torque loss, input speed and torque. It also includes a discussion on other factors affecting torque loss, such as inclination angle and lube oil temperature.Manual transmissions used in compact light truck applications have torque losses that are a function of input speed and torque. Efficiency studies done on manual transmissions in the engine-driving mode indicate that torque losses, in other than direct-drive gears, are considerably more dependent on input torque than input speed. It was also observed that efficiency was significantly affected by the inclination angle and lube oil temperature.
- Pages
- 8
- Citation
- Greenbaum, J., Kluger, M., and Westmoreland, B., "Manual Transmission Efficiency Trends and Characteristics," SAE Technical Paper 942274, 1994, https://doi.org/10.4271/942274.