THE EMERGENCE AND EVOLUTION OF AUTOMATIC TRANSMISSION TECHNOLOGY

This article analyzes the emergence and development stages of the automatic transmission, the operational characteristics of mechanical transmission synchronizers, and their impact on driver performance. The first automatic transmission developed by General Motors and its evolution from a hydraulic clutch to a hydraulic transformer are highlighted. Additionally, the structural design of the hydraulic transformer, the principle of torque transmission, and the advantages of automatic torque control in accordance with the vehicle's driving conditions have been scientifically substantiated.