Multi-stage dynamic continuous adjustable variable rotational inertia hydrodynamic retarder test bench

Abstract

The invention discloses a multi-stage dynamic continuous adjustable variable rotational inertia hydrodynamic retarder test bench, which comprises a main motor, a main shaft, a speed regulation assembly, an electronic control unit, a clutch and more than two inertia disc groups, the more than two inertia disc groups are arranged on the main shaft at certain intervals, and the main shaft is driven by the main motor; the speed regulation assembly regulates the speed of the inertia disc groups to be consistent with the rotating speed of the main shaft; the number of the speed regulation assemblies, the number of the clutches and the number of the inertia disc sets are consistent; and the electronic control unit increases or decreases the inertia disc groups by controlling combination or separation of the clutch according to a given working condition, so that the braking efficiency of the hydraulic retarder is simulated. According to the invention, the braking efficiency of the hydrodynamic retarder under the continuous change ramp working condition or the continuous gear shifting working condition can be simulated.

Description

technical field [0001] The invention relates to the technical field of hydraulic retarder braking effect detection equipment, in particular to a multi-stage dynamic and continuously adjustable variable inertia hydraulic retarder test bench. Background technique [0002] The traditional inertial benches disclosed in the prior art are driven by the power source to drive the inertia disk with fixed moment of inertia to drive the hydraulic retarder. The inertia disk stores energy to load the hydraulic retarder, and at the same time simulates the inertia of the vehicle to perform A test of the braking effect of a hydraulic retarder under a fixed vehicle inertia. If you want to simulate the driving condition of the vehicle on a changing slope or simulate the braking performance of the hydraulic retarder in the shifting condition, you must stop the test bench and increase or decrease the number of inertial discs to change the system moment of inertia. It is extremely difficult to ...

AI Technical Summary

Problems solved by technology

If you want to simulate the driving condition of the vehicle on a changing slope or simulate the braking performance of the hydraulic retarder in the shifting condition, you must stop the test bench and increase or decrease the number of inertial discs to change the system moment of inertia. It is extremely difficult to disassemble multiple times. Due to the installation accuracy during the disassembly process, the inertia disk installed later may cause a small rotation relative to the system as a whole when the test bench rotates at high speed, resulting in uncontrollable additional The moment of inertia affects the accuracy of the test, and the repeated disassembly and assembly of the inertia disk seriously affects the efficiency of the test bench

And this kind of inertial bench cannot simulate the continuous changing ramp conditions and continuous shifting conditions of the actual complex road surface of the whole vehicle, so it is impossible to know from the experiment that the hydraulic retarder is in the continuous changing conditions of ramps or gears. braking performance under

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