Method for controlling brake torque in charging brake process of hydraulic retarder
A technology of hydraulic retarder and braking torque, applied in the direction of hydraulic resistance brakes, brake types, mechanical equipment, etc.
Active Publication Date: 2016-03-09
CHINA NORTH VEHICLE RES INST
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Problems solved by technology
[0008] The technical problem solved by the present invention is to provide a method for controlling the braking torque of the hydraulic retarder during the hydraulic braking process, which solves the technical problem of controlling the output of a specific torque, and the hydraulic retarder during the hydraulic braking process. The problem of precise control of the braking torque provides support for the control strategy of the combined braking system including the hydraulic retarder and the control structure design of the hydraulic retarder. The control method of the present invention includes a structural design of the hydraulic retarder The content and the content of controlling the braking torque through the control of the pressure in the highest pressure zone of the cycle circle during the filling and braking process of the specific hydraulic retarder
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[0060] 1) Propose the braking torque required for the partial hydraulic braking process of the 380 hydraulic reducer, mark it at the corresponding speed, and write the results in the positions A1-A5 in Table 6;
[0061] 2) According to the control torque, query figure 2 , to obtain the circulating circular pressure under the corresponding torque at each speed, and write the result in the B1-B5 position in Table 6;
[0062] 3) The control device determines the circulating circular pressure at each speed point in the braking process according to the position data in Table 1B1-B5, so as to realize the torque braking in the braking process.
[0063] Table 6 Rotational speed-circular pressure relationship table
[0064]
[0065]
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The invention provides a method for controlling brake torque in the charging brake process of a hydraulic retarder and belongs to the technical field of the hydraulic retarder. Accurate control over the brake torque in the charging brake process of the hydraulic retarder is achieved, and a support is provided for design of the control strategy of a combined brake system comprising the hydraulic retarder and the control structure of the hydraulic retarder. The control method comprises the content of structural design of the hydraulic retarder and the content that the brake torque is controlled by controlling the pressure of the circular circle highest pressure area of the charging brake process of the specific hydraulic retarder. The method can achieve control over the torque in the charging brake process of the hydraulic retarder and meet the urgent need of dynamic control and verification of the brake torque in the charging brake process of the hydraulic retarder.
Description
technical field [0001] The invention belongs to the technical field of hydraulic retarders, and in particular relates to a control method for the braking torque characteristics of the hydraulic retarder during the hydraulic braking process. Background technique [0002] 1 Application and development of hydraulic reducer [0003] The hydraulic reducer is a hydraulic coupling i TB = 0, the circular circle is composed of two kinds of impellers, the rotating impeller is called the moving wheel, and the fixed impeller is called the fixed wheel. Its working principle is: when working, the moving wheel rotates with the drive shaft. When the liquid is filled, the moving wheel converts the input mechanical energy into hydraulic energy, so that the liquid flow rushes to the blades of the fixed wheel at high speed; the fixed wheel does not rotate, forming resistance to fluid flow. In this way, braking torque is generated and all hydraulic energy is converted into heat energy. The br...
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Inventor 徐鸣吕庆军张志凯李慧渊秦绪情望运虎宋振川卜树峰
Owner CHINA NORTH VEHICLE RES INST