See also the car engine. Transmission (power transmission) transmits torque from the engine to the propeller, A. (wheels, caterpillars, etc.). Transmission can be: mechanical, electromechanical and hydro. The most common manual transmission, which usually consists of a clutch – clutch, making it possible to separate the short and smoothly connect the engine and subsequent arrangements transmission, gearbox, gear reducer step which you can edit in a broad range torque at the drive wheels (traction force) and to reverse; driveline – shafts joints that transmit torque from the gearbox to the main gear under varying angles between their shafts, final drive – gear reducer and are constantly improving the torque transmitted from the box transfers to the drive wheels, the differential – a mechanism that distributes torque from the main transmission between the drive wheels, so they rotate on the turns and bumps of the road with different angular speeds; shafts transmitting torque to the driven wheels. The main transmission performed previously in the form of a pair of bevel gears with straight teeth (the cargo aa in the form of two pairs – the cylindrical and conical), made with helical teeth or with hypoid gearing. With a transverse engine main transmission is done in the form of cylindrical gears.
A. On some all-terrain or heavy-duty use separated main gears in the form of the central cone gear and side (wheel) gear (pair of cylindrical gears with external or internal gears, planetary gear). The most promising stepless transmission, which is much easier to manage, improve ride comfort and cross-transmission of A.