What factors affect the life of the dowty retarder

Dowty retarder，is a hydraulic unit which can control the speed of trains easily and automatically without external power and control . In twenty years, the retarder has been used in more and more fields. Today , China has become the country which has most numbers of dowty retarder.

In the course of using dowty retarder , there are some problems , such as the instability of the quality of retarder . In the other side， dowty retarder is easy to become disable. It spends a lot of money and time to repair the dowty retarder. Because of the limit of technique , the factories of manufacturing retarder can't made head or tail of dowty retarder' s internal status when it is working. They can't analyse the quest ions accurately,so they can't make progress. For the reason of saling the dowty retarder to so they can't make progress. For the reason of saling the dowty retarder to repairing products (equal-life products).