Torque Converter Design

Characterizing the Effect of Automotive Torque Converter Design Parameters on the Onset of Cavitation at Stall

SAE Technical Papers
Title: Characterizing the Effect of Automotive Torque Converter Design Parameters on the Onset of Cavitation at StallDocument Number: 2007-01-2231
Author(s): Darrell Robinette - Michigan Technological Univ. Carl Anderson - Michigan Technological Univ. Jason Blough - Michigan Technological Univ. Mark Johnson - Michigan Technological Univ. Don Maddock - GM Powertrain Jean Schweitzer - GM Powertrain
Abstract: This paper details a study of the effects of multiple torque converter design and operating point parameters on the resistance of the converter to cavitation during vehicle launch. The onset of cavitation is determined by an identifiable change in the noise radiating from the converter during operation, when the collapse of cavitation bubbles becomes detectable by nearfield acoustical measurement instrumentation. An automated torque converter dynamometer test cell was developed to perform these studies, and special converter test fixturing is utilized to isolate the test unit from outside disturbances. A standard speed sweep test schedule is utilized, and an analytical technique for identifying the onset of cavitation from acoustical measurement is derived. Effects of torque converter diameter, torus dimensions, and pump and stator blade designs are determined.
File Size: 967KProduct Status: In Stock
See other papers presented at SAE 2007 Noise and Vibration Conference and Exhibition, May 2007, St. Charles, IL, USA, Session: Engine / Powertrain / Driveline: Driveline (Part 2 of 3)
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