Function and performance

The function of Anpulley OAP is to decouple the alternator from the rotational irregularity of the crankshaft of an internal combustion engine. This will help the front end accessory drive (FEAD) system move smoothly, increase the lifetime of parts of FEAD system, and improve the NVH, fuel consumption and exhaust emission of engine.

The design lifetime of Anpulley OAP is 240,000km. To achieve this target, we strengthen the one-way clutch and bearings. The  static bearking torque of one-way clutch is more than 300Nm. We use KYODOYUSHI high temperature resistant lubricating grease imported from Japan for one-way clutch and bearings. The material of bearing seals is acrylate rubber (ACM) with great performance of high temperature, low temperature and oil resistance. Therefore, Anpulley OAP can be able to resist a permanent ambient temperature of -30°C to +110°C and temporary peak temperatures of -40°C or +140°C are admissible and do not lead to permanent impairment of function.

Test and verification

Anpulley OAP have undergone millions of kilometers of road tests and tens of thousands of hours of bench simulation tests in the R&D stage to verify the reliability and durability of the product design. At the stage of product finalization and mass production, we still conduct hundreds of thousands of kilometers of road tests and thousands of hours of bench tests every year. In addition, we have passed verifications of bench and vehicle tests in alternator manufacturers and OEMs. We have a rigorous and responsible attitude to ensure the quality of each batch of products delivered to our customers.

Our verifications include but are not limited to the following:

◥ Functional test

◥ Low temperature test and over temperature test

◥ High temperature and rapid speed change durability bench test

◥ Road test

◥ Salt spray test

◥ Dust and grease leakage test

◥ Vibration test

◥ Other parts test