What does a semi-automatic transmission mean?

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A semi-automatic transmission is a gearbox that combines the functions of manual and automatic transmissions. This technology was developed to improve the fuel efficiency and controllability of automatic transmissions, allowing the shift timing, which is usually determined by the computer, to be returned to the driver's hands, thereby enhancing driving operability and enriching the driver's experience. Here is a related introduction to semi-automatic transmissions: Working principle: During operation, the transmission ECU controls a stepper motor to push the clutch fork, causing the clutch to disengage or engage. The function of the automatic shift control mechanism is to automatically engage the corresponding gear as needed. Generally, two stepper motors are set, both controlled by the transmission ECU. The gear lever setting is similar to that of a conventional automatic transmission, with no clutch pedal. Usage of semi-automatic transmission: When using the manual shift mode, it is necessary to switch the gear lever to the "M" position and then perform upshift or downshift operations as needed. Regardless of the style of the semi-automatic transmission, the D gear and M gear are adjacent.