Study on the control of automatic transmission proportional solenoid valve at different temperatures

Based on the analysis of the testing automatic transmission (AT), the AT’s solenoid valve control signals conditioning circuits and revolving speed F/V converter conditioning circuits are designed, and the data acquisition system is designed based on virtual instrument. The system is composed of the PCI-6024E data acquisition card, signal conditioning circuits and computer, and the acquisition procedure is programmed in graphical language LabVIEW. Finally, the data acquisition system has been verified on vehicle test bench which loads ZF-Ecomat 6HP500 AT. Controlling signals of switching solenoid valves, duty cycle signal of proportional solenoid valve, accelerator aperture signal, oil pressure signals and speed signals are collected, it turns out that the data acquisition system has good feasibility.

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Research on Proportional Solenoid Valve Used for Automatic Transmission

Journal of Mechanical Engineering ◽

10.3901/jme.2014.20.100 ◽

2014 ◽

Vol 50 (20) ◽

pp. 100

Author(s):

Fei MENG

Keyword(s):

Automatic Transmission ◽

Solenoid Valve ◽

Proportional Solenoid Valve

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Multi-Physics Coupled Thermo-Mechanics Analysis of a Hydraulic Solenoid Valve

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.321-324.102 ◽

2013 ◽

Vol 321-324 ◽

pp. 102-107 ◽

Cited By ~ 4

Author(s):

Yan Fang Liu ◽

Ming Chong Mao ◽

Xiang Yang Xu ◽

Gang Shi

Keyword(s):

Thermal Deformation ◽

Automatic Transmission ◽

Solenoid Valve ◽

The Finite Element Method ◽

Operating Environment ◽

Thermal Failure ◽

Reliability Design ◽

Mechanics Model ◽

Operating Environments ◽

Proportional Solenoid Valve

Solenoid valve is complex heterogeneous system involving multi-physics coupling of mechanics, electronics, magnetics, thermotics, etc, whose reliability and life depends largely on the heat generated during the operation. A multi-physics coupled thermo-mechanics model of a hydraulic proportional solenoid valve used in an automatic transmission was built up with the finite element method (FEM), the temperature and thermal deformation of the solenoid valve with different currents under two operating environments was analyzed. The calculated results show that the operating environment and current are important factors leading to thermal failure of solenoid valves. The model has high accuracy because of considering the multi-physics coupling control characteristics of mechanics, electronics, magnetics, thermotics, etc, and so can be used for the reliability design of solenoid valves.

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Shift Quality Analysis of Heavy-Duty Vehicle Automatic Transmission Shift Control Valve

The Open Mechanical Engineering Journal ◽

10.2174/1874155x01509010333 ◽

2015 ◽

Vol 9 (1) ◽

pp. 333-338 ◽

Cited By ~ 1

Author(s):

Ma Wenxing ◽

Zhang Yan ◽

Wang Ruoyang ◽

Lu Xiuquan

Keyword(s):

Automatic Transmission ◽

Solenoid Valve ◽

Simulation Software ◽

Quality Analysis ◽

Bench Test ◽

Heavy Duty ◽

Shift Quality ◽

Shift Control ◽

Heavy Duty Vehicle ◽

Proportional Solenoid Valve

The structural concepts of Switch solenoid valve and proportional solenoid valve were proposed for the hydraulic shift control system of some hydrodynamic mechanical automatic transmissions. Shift oil pressure of stationary combination valve and proportional solenoid valve was modeled, simulated, contrasted and analyzed by dynamic simulation software in order to study the shift quality of heavy-duty vehicle automatic transmission. The results show that proportional solenoid valve is better to control the characteristic of shift oil pressure, reduce shift shock, improve shift quality and comfort than stationary combination valve. The correctness and validity of the model were verified through bench test, which reflected the dynamic characteristics of shift oil pressure of hydrodynamic mechanical automatic transmission. The results can be used to match the performance and predict heavy-duty vehicle shifting process, and to further lay the foundation for the enhancement of shift performance of the system.

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