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R, the manual gear of the car, the rear gear of the car.

Manual gear is a manual transmission (MT), also called manual gear, that is, shifting the gear lever by hand can change the gear meshing device in the transmission and the transmission ratio, so as to achieve the purpose of speed change.

Working principle:

Pump wheel and turbine are a pair of working combinations, just like two fans placed opposite each other. The wind of one fan will drive the blades of another fan to rotate, and the wind will become the medium of kinetic energy transfer.

If liquid is used instead of air as the medium to transfer kinetic energy, the pump wheel drives the turbine to rotate through the liquid, and then a guide wheel is added between the pump wheel and the turbine, so that the speed difference between the pump wheel and the turbine can be realized through the reaction force, and the variable speed and torque can be realized.

Extended data:

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