Development of an Assessment Methodology for Synchronizer Ring (CuZn Alloy) Wear Durability

Le résumé fourni par la source

Gear shifting effort or force especially in manual transmission has been one of the key factors for subjective assessment in passenger vehicle segment. An optimum effort to shift into the gears creates a big difference in overall assessment of the vehicle. The gear shifting effort travels through the transmission shifting system that helps driver to shift between the different available gears as per the torque and speed demand. The shifting system is further divided into two sub-systems. 1. Peripheral system [Gear Shift Lever with knob and shift Cable Assembly] and Shift system inside the transmission [Shift Tower Assembly, Shift Forks, Hub and sleeve Assembly with keys, Gear Cones and Synchronizer Rings etc.] [1]. Both the systems have their own role in overall gear shifting effort. There has been work already done on evaluation of the transmission shifting system as whole for gear shifting effort with typical test bench layouts. Also, work has been on assessment of life of the synchronizer ring as standalone. Current paper explains the work done on the development of a methodology to evaluate the synchronizer ring assembly on a test bench that accommodates only a Synchronizer ring and Gear cone set for evaluation, and the results of which can be correlated with bench testing of the complete synchronizer ring evaluation along-with Transmission shifting system.

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