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What is an automotive valve body?

1 Answers

McTeagan

07/29/25 7:38pm

The valve body is a component inside the transmission, used for shifting between high and low gears. The transmission valve body is located above the transmission oil pan and becomes visible once the oil pan is removed. When the vehicle speed reaches a certain gear speed, the transmission oil pushes the valve body to automatically shift up or down. Below are specific details about the transmission valve body: Working Principle: When the vehicle speed reaches a certain gear speed, the hydraulic oil pushes the valve body to automatically shift to that gear. The automatic transmission can automatically change the transmission ratio based on engine load and vehicle speed, providing the car with good power performance and fuel economy while reducing engine emissions. Function and Composition: Automatic transmissions are easy to operate and can significantly improve driving safety and reliability in congested traffic. An electronically controlled automatic transmission typically consists of five parts: a torque converter, planetary gear system, shift actuator, hydraulic control system, and electronic control system.

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