Brake creep-groan is studied via a friction coupled torsional model consisting of driveline and brake sub-systems. The model captures the main torsional modes of interest while a suitable reduction of higher degree-of-freedom models allows selection of appropriate parameters. Numerical simulations are programmed that capture groan response with stick-slip friction and transient brake pressure. The vehicle is initially at rest and the groan may build into a steady state limit cycle, depending on the brake force actuation. For automatic transmission (AT) the driving torque is at the torque converter. For manual transmission (MT) the vehicle is on a slope and the driving torque is due to weight of the vehicle. On-vehicle tests provide time and frequency domain measured accelerations for comparison.
An Explanation for Brake Groan Based on Coupled Brake-Driveline System Analysis
Sae Technical Papers
SAE 2007 Noise and Vibration Conference and Exhibition ; 2007
15.05.2007
Aufsatz (Konferenz)
Englisch
An explanation for brake groan based on coupled brake-driveline system analysis
Kraftfahrwesen | 2007
|An Explanation for Brake Groan Based on Coupled Brake-Driveline System Analysis
British Library Conference Proceedings | 2007
|Kraftfahrwesen | 1990
|SAE Technical Papers | 1990
|Mechanisms of brake creep groan
Kraftfahrwesen | 1997
|