Which two forces does the dowty retarder work in?

The dowty retarder is subjected to two forces during work, namely braking work and resistance work. Brake work (absorptive work) is the work performed by the decelerating roof on the vehicle under braking.

The greater the braking power of dowty retarder, the more obvious the dowty retarder effect on the vehicle. The magnitude of the braking work mainly depends on the opening pressure of the deceleration pressure valve and the actual working stroke of the sliding cylinder body; the larger the pressure, the longer the stroke.

When dowty retarder sliding cylinder body initially slid about 20-25mm, the work done by the dowty retarder is very small, mainly because the upper cavity of the existing sliding top sliding cylinder is a mixed oil with a large elastic modulus, and the piston Above is the speed valve and below is the pressure valve.