Discrete-point test device for internal flow field of hydraulic torque converter

Abstract

The invention discloses a discrete-point test device for the internal flow field of a hydraulic torque converter. The discrete-point test device comprises a drive module, a pump wheel flowing module, a gantry-type pipeline flowing module, a guide wheel flowing module, a guide wheel support module, a turbine flowing module and a simulated load module, wherein the drive module is used for driving a pump wheel in the pump wheel flowing module to rotate as a whole, a working liquid flows to arrive at the turbine flowing module through the gantry-type pipeline flowing module, and then drives the turbine of the turbine flowing module to rotate, and a power is output to the simulated load module; the working liquid flows out from a turbine outlet and enters the blade area of the guide wheel of the guide wheel support module through a guide wheel inner ring-outer ring connection element; and then the working liquid enters the pump wheel flowing module again, so as to form a sealed circulation flowing channel. The discrete-point test device disclosed by the invention breaks through the closure and compactness limits of the own structure of the hydraulic torque converter, and is capable of being combined with a particle imaging velocity measurement technology and a laser Doppler velocity measurement technology to obtain the distribution condition of the internal flow field of the hydraulic torque converter.

Description

technical field [0001] The invention belongs to the technical field of testing devices, in particular to a device for separately arranging a pump wheel, a turbine wheel and a guide wheel of a hydraulic torque converter to test its internal flow field. Background technique [0002] The hydraulic torque converter is one of the key components of the vehicle transmission system, and its main function is to make the starting and shifting process of the vehicle smooth. However, due to the characteristics of the hydraulic transmission itself, the efficiency of the entire transmission system will be reduced. In order to improve its efficiency, it is necessary to conduct detailed and in-depth research on its internal flow field. [0003] At present, there are mainly two methods for testing the internal flow field of the torque converter: experimental method and numerical analysis method. [0004] Numerical analysis mainly uses computational fluid dynamics (Computational Fluid Dynam...

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Problems solved by technology

However, in the existing test devices for the flow field of hydraulic torque converters with transparent shells, in some cases, it is difficult to test the flow field near the guide wheel because the guide wheel is between the pump wheel and the turbine.

At the same time, the turbine is covered by the driving wheel on the pump wheel, so the turbine casing is made of two layers of plexiglass, so that only the pump flow field test can be carried out for this specimen. When the flow field test experiment is carried out on the turbine, The transparent shell needs to be removed, which increases the complexity of the test and does not break through the structural limitations of the torque converter

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