Browse Publications Technical Papers 680582
1968-02-01

Clutch Energy — A Criteria of Thermal Failure 680582

A method is presented for computing the energy dissipation rate in a wet clutch that is part of a vehicle transmission system. This method takes into account the transients in the vehicle prime mover, the hydraulic torque converter, the powershift transmission, and the vehicle load.
The clutch energy rate is then used as an input to attempt to predict the interface temperature at the clutch surface.
The solution of the Fourier-Poisson unsteady state heat conduction equation is carried out using a finite difference method. The calculation of this interface temperature, called temperature index, is then correlated to actual clutch failure through experimental laboratory clutch testing. Results show a temperature index level above which failure is likely to occur regardless of the variation of clutch parameters.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Influence of Paper-Based Friction Material Visco-Elasticity on the Performance of a Wet Clutch

970977

View Details

TECHNICAL PAPER

Wet Clutch Lining-Lubricant Additive Interactions

740052

View Details

TECHNICAL PAPER

Effects of Operating Conditions on performance of Wet Friction Materials: A Guide to Material Selection

881280

View Details

X