2. Manual transmission consists of transmission mechanism, transmission housing and control mechanism. The basic principle of manual transmission is to change the transmission ratio by switching different gear sets. Most of the manual transmissions in automobiles are four-speed or five-speed stepped transmissions, so the maintenance cost is low.
3. Composition of manual transmission:
1。 Transmission control mechanism The structure of transmission control mechanism changes greatly, which is mainly related to the form and layout of body and chassis structure. According to the different relative positions of the shift handle and the transmission, there are two structural forms: direct control and remote control.
2. Transmission transmission mechanism The transmission mechanism is the main body of the transmission, which is mainly composed of gears, shafts and bearings. Its function is to change the transmission ratio and rotation direction of gears. Input flywheel clutch;
3. Transmission shifting device The shifting device used in modern automobile manual transmission is a synchronizer, which is installed between two floating gears to improve the shifting quality;
4. Transmission case and cover. The gearbox cover is used to install transmission mechanism, gear shifting device and some operating mechanisms, and to store lubricating oil.
Million car purchase subsidy