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Slipping Torque Converter Clutch Interface Temperature, Pressure and Torque Measurements Using Inductively Powered Radiotelemetry
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Abstract
Torque converter clutch friction interface and automatic transmission fluid (ATF) temperatures, pressure difference across the clutch piston, flow through the friction material grooves, and engine crankshaft dynamic torque were measured for typical operating conditions on a running transmission. The friction coefficient, clutch unit pressure, fraction of heat rejected to ATF flowing through the grooves, and time dependent thermal response were determined. Simplified heat transfer calculations were compared with thermal data. Clutch interface temperatures were assessed as they relate to the process of friction material and ATF degradation. The inductively powered radiotelemetry system was found to be a robust and powerful tool for investigating continuously slipping clutch system performance.
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Citation
Throop, M. and McWatt, D., "Slipping Torque Converter Clutch Interface Temperature, Pressure and Torque Measurements Using Inductively Powered Radiotelemetry," SAE Technical Paper 970679, 1997, https://doi.org/10.4271/970679.Also In
1997 Transmission and Driveline Systems Symposium: Transmission Systems, Components, Gears and Friction and Fluid Materials
Number: SP-1241; Published: 1997-02-24
Number: SP-1241; Published: 1997-02-24
References
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