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Life Prediction of Shift Valve for Wet Shift Clutch under Abrasive Wear
Technical Paper
2015-01-0682
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
In the present paper a degradation assessment and life prediction method has been proposed for electro-hydraulic shift valve applied to control wet shift clutch in Power-shift steering transmission (PSST). Unlike traditional analysis of contaminant sensitivity, our work is motivated by the failure mechanisms of abrasive wear with a mathematic model. Plowing process included in abrasion will consecutively increase the roughness of mating surfaces and thereby enlarge the clearance space for leaking more fluid. It is an overwhelming wear mechanism in the degradation of shift valve within serious-contaminated fluid. Herein a mathematic model for assessment and prediction is proposed by considering particle morphology and abrasion theory. Such model has been verified for its applicability and accuracy through comparison between theoretical and experimental results. Assuming the proposed model to be general, valve wearing behavior in any hydraulic system can be simulated.
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Authors
Citation
Liu, Y., Ma, B., and Zheng, C., "Life Prediction of Shift Valve for Wet Shift Clutch under Abrasive Wear," SAE Technical Paper 2015-01-0682, 2015, https://doi.org/10.4271/2015-01-0682.Also In
References
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