Guangdong Jicheng Hydraulic Machinery Co., Ltd.

Automatic transmission valve body assembly oil circuit plate working principle

The working principle of the oil circuit plate of the automatic transmission valve body assembly is a process involving complex hydraulic and mechanical control. The valve body assembly oil circuit board is the core component of the automatic transmission. Its main function is to automatically change the transmission ratio according to the engine load and vehicle speed and other conditions to achieve good power and fuel economy, while reducing engine emissions.

Inside the automatic gearbox, the valve body assembly oil circuit plate is responsible for controlling the flow direction and flow of hydraulic oil, thereby adjusting the actions of various gears and clutches inside the gearbox. When the driver operates the accelerator pedal or brake pedal, these operation signals will be transmitted to the transmission control unit (TCU), which calculates the best transmission ratio and hydraulic control strategy according to preset algorithms and logic.

Next, the TCU will send a control signal to the oil circuit plate of the valve body assembly, and adjust the flow direction and flow of the hydraulic oil by changing the opening and closing state and current of each solenoid valve on the oil circuit plate. These hydraulic oils will flow through different channels and oil circuits and enter the corresponding actuators (such as clutches, brakes, etc.) to achieve gear meshing and separation, thereby changing the transmission ratio.

In the whole process, the oil circuit plate of the valve body assembly needs to accurately control the flow of hydraulic oil to ensure the smooth operation and efficient transmission of the gearbox. At the same time, the oil circuit board also needs to have sufficient durability and reliability to cope with a variety of complex and harsh driving conditions.

In addition, it is worth noting that the working state of the oil circuit plate of the valve body assembly will be affected by many factors, such as oil temperature, oil pressure, oil quality, etc. Therefore, in actual use, it is necessary to regularly check and maintain the oil and oil system of the gearbox to ensure its normal operation and extend its service life.

In summary, the working principle of the oil circuit board of the automatic transmission valve body assembly is a process involving complex hydraulic and mechanical control. By accurately controlling the flow direction and flow of the hydraulic oil, the automatic transmission and efficient transmission of the transmission are realized.

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