Hydraulic retarder control device

The utility model discloses a hydrodynamic retarder control device, the control device is formed by an air inlet cavity, a pressure stabilizing cavity, an air transmission cavity and an exhaust cavity, a relay valve is arranged between the air inlet cavity and the pressure stabilizing cavity, a two-way one-way valve is arranged between the pressure stabilizing cavity and the exhaust cavity, the relay valve is connected with a proportional electromagnetic valve, and the air transmission cavity is communicated with a retarder. The two-way one-way valve comprises a valve body framework and an elastic assembly, the valve body framework forms a first contact part and a second contact part, the elastic assembly is arranged between the first contact part and the second contact part, a first valve port is defined by the first contact part and the elastic assembly, and a second valve port is defined by the second contact part and the elastic assembly. The first valve port communicates with the pressure stabilizing cav