A passenger car gearbox impact test device and test method thereof

Abstract

A passenger car gearbox impact test device and its test method, the passenger car gearbox impact test device, including a support device for fixing the passenger car gearbox to be tested, and an input of the passenger car gearbox to be tested A drive mechanism directly connected to the terminal, a brake mechanism connected to the two output ends of the passenger car gearbox to be tested, and a hydraulic loading device connected to the brake mechanism; the drive mechanism includes a drive motor, an electromagnetic clutch, and an inertial flywheel connected in sequence. box, input transmission shaft, and the output shaft of the inertial flywheel box is equipped with an input end torque speed sensor; the braking mechanism includes an output transmission shaft connected in sequence, an output end torque speed sensor, an intermediate support, and a braking device. The invention can scientifically simulate the instantaneous impact condition of the gearbox under the condition of the whole vehicle, and can complete an impact test process in a particularly short time, and the impact torque, impact simulation inertia and impact test speed are adjustable.

Description

technical field [0001] The invention relates to a passenger car gearbox impact test device and a test method thereof, which are mainly used for performing the gearbox impact test by simulating the impact conditions encountered in the actual vehicle working conditions of the passenger car gearbox. Background technique [0002] Under the driving conditions of the whole vehicle, when changing from a road with a low adhesion coefficient to a road with a high adhesion coefficient or during emergency braking, due to the rapid braking at the wheel end, the input end of the gearbox itself has some inertia or the power at the input end has not yet been cut off, resulting in The internal gears and shafting of the gearbox will produce a large instantaneous impact, which will seriously cause the gear of the gearbox to break and the shafting to break; the conventional test bench cannot scientifically simulate the instantaneous impact of the gearbox under the condition of the whole vehicle...

AI Technical Summary

Problems solved by technology

[0002] Under the driving conditions of the whole vehicle, when changing from a road with a low adhesion coefficient to a road with a high adhesion coefficient or during emergency braking, due to the rapid braking at the wheel end, the input end of the gearbox itself has some inertia or the power at the input end has not yet been cut off, resulting in The internal gears and shafting of the gearbox will produce a large instantaneous impact, which will seriously cause the gear of the gearbox to break and the shafting to break; the conventional test bench cannot scientifically simulate the instantaneous impact of the gearbox under the condition of the whole vehicle. Moreover, the test method requires that the test impact be completed in a very short time (generally, the impact process is completed within (0.1-0.2) s), and the impact torque, impact simulation inertia and impact test speed are adjustable, so the test is difficult. There is currently no relevant test bench in China

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