What is the model number of the Wuling Rongguang alternator belt?
1 Answers
Wuling Rongguang B12 engine alternator belt model is 4PK850, where PK represents the tooth pitch=3.5mm, 4 indicates the belt has 4 wedge teeth, and 850 means the effective belt length is 850mm. Engine principle is explained below: 1. Explanation 1: The operating resistance of a car alternator relates to the rotor's excitation voltage and current. Greater excitation current results in higher power generation, correspondingly increasing the alternator's operating resistance. For common AC or DC alternators, when there's no output current, the winding essentially behaves like an iron block with bearings. 2. Explanation 2: Besides bearing friction, there's no other resistance. When the output is loaded, the rotor generates strong magnetic fields that interact with the stator coil poles, creating attraction. Greater magnetic field intensity leads to higher operating resistance, and heavier loads increase magnetic flux cutting resistance, meaning greater operational resistance.