Temperature control simulation system for hydraulic valve block of hydraulic automatic transmission and test method

Abstract

The invention discloses a temperature control simulation system for a hydraulic valve block of a hydraulic automatic transmission and a test method. The system firstly carries out temperature adjustment of oil through a heating device and a cooling device, and the oil with the temperature meeting the requirement enters a simulation module for simulation after pressure stabilization and pressure adjustment. The system is used for solving the problem about a working state of a hydraulic unit of the hydraulic automatic transmission at different temperatures and during cold and hot switching. The system can directly test the hydraulic valve block, a torque converter simulation device, a valve block cooling and lubricating simulation device and the like of the hydraulic unit to confirm the states of the hydraulic unit at different temperatures, thereby reducing the hydraulic automatic transmission fault caused by the uncertain working state of the hydraulic unit under the condition of large temperature difference in various places in China, and improving the test efficiency.

Description

technical field [0001] The invention belongs to the technical field of transmissions, and in particular relates to a hydraulic valve block temperature control simulation system and a testing method of a hydraulic automatic transmission. Background technique [0002] The oil temperature of the hydraulic automatic transmission has an important influence on the characteristic curve, response speed, working state, reliability and use cost of the hydraulic valve block. Therefore, it is necessary to explore the influence of the oil temperature of the hydraulic automatic transmission on the hydraulic valve block under different conditions. At present, there are few domestic researches on special test benches for testing the working conditions of the hydraulic valve block at different temperatures. Most of them are indirect measurements of the working state of the hydraulic valve block at different temperatures. Its performance curves and other characteristics cannot be expressed in...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a hydraulic automatic transmission hydraulic valve block temperature control simulation system and testing method to solve the problem of hydraulic valve block working state testing at different temperatures and performance curves in the prior art. It is difficult to express the characteristics such as intuitively, it is difficult to directly control the hydraulic valve block, there are errors, and the measurement results do not match the actual problems.

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