What does 9HAT transmission mean?

[McEmilio]

9HAT transmission is China's first P2 hybrid 9-speed hydraulic automatic transmission. Based on the 9AT, the 9HAT adds a high-power P2 hybrid motor and a C0 clutch structure for disconnecting or connecting the transmission and engine power, enabling pure electric or hybrid driving modes for the vehicle. The following are the three functions of the transmission: Changing the transmission ratio: To meet the traction needs under different driving conditions, allowing the engine to operate as much as possible under favorable conditions and meeting the possible driving speed requirements. It can significantly change the vehicle's driving speed and the torque on the driving wheels. Achieving reverse driving: To meet the need for the vehicle to drive in reverse. For reverse driving, the engine crankshaft generally can only rotate in one direction, but the vehicle sometimes needs to drive in reverse. Therefore, the reverse gear set in the transmission is often used to achieve reverse driving. Interrupting power transmission: When the engine starts, idles, the vehicle shifts gears, or needs to stop for power output, the power transmission to the driving wheels is interrupted.