Principle of Gear Shifting in Sedans?

[CharlesLynn]

Gear shifting is achieved by changing the transmission gears. Here are the relevant details about gear shifting: 1. Gears: The drive shaft of the tires has gears of different gear positions. When the engine speed remains constant, engaging gears of different sizes (different gear positions) with the engine results in the larger gear obtaining a lower circumferential speed compared to the smaller gear. 2. Torque: According to the knowledge of torque, in low gear, the gear is larger, and the engine drives a larger radius with a smaller radius, allowing the car to obtain greater driving force. In high gear, the engine drives a smaller radius, resulting in a faster circumferential speed, meaning the car moves faster but with less torque, i.e., less driving force. Therefore, gear shifting in cars is essentially about changing the transmission gears.