A retarder brake torque pressure control system and method
A retarder braking and pressure control technology, applied in the field of gearboxes, can solve the problems of slow retarder control response and low adjustment accuracy, and achieve the effects of avoiding pollution, simple overall structure, and convenient system oil circuit layout
Active Publication Date: 2021-11-09
SHAANXI FAST GEAR CO
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Problems solved by technology
[0003] The traditional retarder control method adopts air-liquid control, and adjusts the liquid filling rate in the retarder working chamber by controlling the pressure of the air valve to realize the adjustment of the retarder braking torque. There are certain technical defects: due to the volume of the oil tank Larger, the gas is compressible, resulting in slower response of the retarder control and lower adjustment accuracy
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[0051] Such as Figure 1 to Figure 6 As shown, a retarder brake torque pressure control system of the present invention includes a proportional control air valve 2, a control air circuit 3, a retarder oil inlet oil passage 4, a retarder working chamber feedback oil passage 5, a retarder The oil return passage 6 of the speed reducer, the retarder control valve 7, the oil inlet passage 8 of the oil cooler, the oil return passage 9 of the oil cooler and the back pressure feedback oil passage 17.
[0052] The retarder control valve 7 is provided with a main spool 11 inside, and one end of the main spool 11 is provided with a spring 16, and the other end of the main spool 11 is connected to the air valve spool 10, and the proportional control air valve 2 is connected through the control air circuit 3. The vent valve spool 10 pushes the main spool 11 of the retarder control valve 7 to move, and the retarder control valve 7 is a three-position, seven-way valve;
[0053] The lower po...
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The invention discloses a braking torque pressure control system and method of a retarder, comprising a thrust device, an oil inlet oil passage of a retarder, a feedback oil passage of a working chamber of a retarder, an oil return passage of a retarder, and a retarder Control valve, oil cooler inlet oil passage, oil cooler return oil passage and back pressure feedback oil passage; the thrust device pushes the main spool in the retarder control valve to move, so that the pressure in the retarder working chamber The thrust of the core plus the elastic force of the spring is balanced with the thrust of the thrust device, and the pressure in the working chamber of the retarder is controlled by controlling the thrust of the thrust device, thereby controlling the braking torque of the retarder. When the retarder is working, the liquid filling rate in the working chamber is constant, and the retarder braking torque is changed by adjusting the control thrust to change the pressure difference between the retarder working chamber and the oil outlet, so that the control response speed is fast and the adjustment accuracy is high.
Description
technical field [0001] The invention belongs to the technical field of gearboxes, in particular to a retarder braking torque pressure control system and method. Background technique [0002] The traditional retarder control method is as follows: the working chamber between the retarder rotor and the stator is connected to the fuel tank, and the liquid level of the fuel tank is connected to the outlet of the control air valve. When the retarder needs to generate braking torque, the system sends an instruction to control the air The valve is opened, and the control gas is filled into the liquid surface chamber of the fuel tank through the air pipe. The pressure of the fuel tank cavity makes a certain volume of hydraulic oil enter the working chamber between the rotor and the stator of the retarder. The high-speed rotation of the rotor causes the oil to generate centrifugal force and impact to the On the stator blades, the stator blades produce a reaction force to the rotating ...
Claims
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IPC IPC(8): B60T10/02F16D57/02
CPCB60T10/02F16D57/02
Inventor 严颖波严鉴铂刘义严周维邱辉鹏边疆陈潇肖殿东
Owner SHAANXI FAST GEAR CO