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Appl. Sci. 2017, 7(12), 1266; https://doi.org/10.3390/app7121266

Modeling and Dynamic Analysis on the Direct Operating Solenoid Valve for Improving the Performance of the Shifting Control System

1
School of Transportation Science and Engineering, Beihang University, Beijing 100191, China
2
Beijing Key Laboratory for High-efficient Power Transmission and System Control of New Energy Resource Vehicle, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
3
Research Department of Vehicle Chasis, Beijing Institute of Space Launch Technology, Beijing 100076, China
*
Author to whom correspondence should be addressed.
Received: 7 November 2017 / Revised: 27 November 2017 / Accepted: 1 December 2017 / Published: 5 December 2017
(This article belongs to the Special Issue Power Transmission and Control in Power and Vehicle Machineries)
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Abstract

The dynamic characteristics and energy loss in a shifting control system is important and necessary in the performance improvement of an automatic transmission. The direct operating solenoid valve has been considered as a potential component applying in the shifting control system in vehicle. The previous method can solve only a specific physical field or use the test results of the magnetic force as input curve. The paper presents a numerical approach for solving the multi-domain physical problem of the valve. A precise model of the direct acting solenoid valve considering different physical field is developed. An experimental study is also performed to evaluate and confirm the simulation. Based on the model, the influences on the dynamic characteristics of the valve are analyzed by calculating forces acting on the valve. The systematic analysis of forces and energy loss characteristics are performed for three different flow conditions varying clearance height from 10 µm to 30 µm. The results demonstrate that the pressure response time can be improved with smaller clearance between the spool and the sleeve. Moreover, the leakage of the shifting control system employing the direct acting solenoid valve can be reduced by 60% compared to the conventional two-stage pilot valve in our previous product. View Full-Text
Keywords: direct operating solenoid valve; energy loss; forces; response pressure; leakage flow direct operating solenoid valve; energy loss; forces; response pressure; leakage flow
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Xu, X.; Han, X.; Liu, Y.; Liu, Y.; Liu, Y. Modeling and Dynamic Analysis on the Direct Operating Solenoid Valve for Improving the Performance of the Shifting Control System. Appl. Sci. 2017, 7, 1266.

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