How to use part-time 4wd in rainy and snowy weather?

Usage of part-time 4wd in rainy and snowy weather: 1. Part-time 4wd is a driving mode that is manually switched by the driver. The driver can choose two-wheel drive or four-wheel drive mode by opening or closing the transfer box; 2. part-time 4wd is a form of four-wheel drive system, which means that the driver can change the two-wheel drive or four-wheel drive mode by opening or closing the transfer gear according to the road conditions, so as to realize the free conversion between two-wheel drive and four-wheel drive; 3. According to the function of the domain, the structural part-time 4wd can be classified in the general direction, which can be divided into 4WD of FR car and 4WD of FF car. The structural diagram shows that the power of the engine is transmitted in the order of transmission, transfer case, front and rear transmission shafts, main reducer and differential, transmission shaft and wheels. 4. Principle When four-wheel drive is used, the transfer box is used to transfer power to the other two non-drive wheels. The common transfer case can be switched between two-wheel drive and four-wheel drive, and also between high speed and low speed. For example, in the case of five forward gears, its structure can be divided into five gears (4WD. H or 2WD. H) Driving on ordinary roads, with 5th gear (4WD). L) Driving on uneven roads.