A Method for Establishing Calculation Model of Torque Characteristics of Retarder

Abstract

The invention discloses a method for establishing a retarder torque characteristic calculation model. By obtaining the control parameters of hydraulic retarder air pressure, transmission shaft speed and torque, and using MATLAB / Simulink as a tool to analyze the parameters in depth, the optimal fitting algorithm of different types of retarder torque characteristic curves is studied. The retarder torque characteristic data is applied to the RCU (Retarder Control Unit) control model, and the retarder torque characteristic calculation model is built to realize reliable calculation of torque and achieve the effect of precise control and feedback. Based on the calculation model of retarder torque characteristics, a calculation model of all types of retarder gears is built to meet the needs of vehicle braking system linkage retarder control torque data, effectively improve the braking performance of the retarder to match the vehicle, and then Realizing the upgrade and optimization of retarder products, on the one hand, will help the research and development of other types of hydraulic retarder products in the future, and on the other hand, it will help win good reputation from customers and continuously improve the company's brand image and market share.

Description

【Technical field】 [0001] The invention belongs to the technical field of vehicle braking, and in particular relates to a method for establishing a retarder torque characteristic calculation model. 【Background technique】 [0002] Compared with other auxiliary brakes (engine braking, eddy current retarder), the hydraulic retarder has the advantages of large braking torque, smooth braking, low noise and long life, and can realize constant speed and graded braking functions. Can effectively reduce the pressure of the main brake. At present, foreign hydraulic retarder technology is relatively mature, but the cost is relatively high, so domestic main engine manufacturers have not been able to carry out large-scale matching. [0003] In order to further improve the performance of hydraulic retarder products and meet the requirements of vehicle braking system linkage retarder control torque data, it is necessary to apply retarder torque characteristic data to the control model. Th...

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Problems solved by technology

[0004] However, due to the complex and inconvenient use of bench test data, it is necessary to study the optimal fitting algorithm of different types of retarder torque characteristic curves based on advanced data algorithms and simulation tools, and then build a retarder torque characteristic calculation model to realize Reliable calculation of torque for linkage control

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