Results 261 to 270 of about 5,605 (307)
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Engagement behavior of degrading wet friction clutches
2011 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2011This paper presents modeling, simulation and experimental validation of the friction material degradation effects on the dynamic engagement behavior of a wet friction clutch system. The clutch system is modeled as a 3 DOF lumped-mass-spring-damper incorporating an extension of the Generalized Maxwell Slip (GMS) friction model.
Agusmian Partogi Ompusunggu +4 more
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A simplified wet friction clutch test apparatus
Tribotest, 1995AbstractA small, economic, test rig to evaluate friction materials and fluids for wet clutch applications has been designed, built and commissioned. In this paper, the construction, operation and performance of the machine are described, and results are presented, for two sets of typical tests.
W. Scott, P. Suntiwattana
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Paper 16: Friction in Wet Clutches
Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1967This paper is intended to demonstrate that designers of wet clutches for power transmission can obtain the optimum friction characteristics for specific applications by considering the interaction between friction materials and lubricants. A friction clutch plate rig is described and the friction results obtained are presented.
E. M. Evans, J. Whittle
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Contact properties of a wet clutch friction material
Tribology International, 2010Abstract Wet clutches are required to transmit torque and also prevent motion in automatic transmissions. Their performance is critically dependent on a friction material which comprises one of the contacting surfaces. Friction materials are usually a composite of fibres, naturally occurring minerals and particles of silicon and graphite, which are ...
M. Ingram, H. Spikes, J. Noles, R. Watts
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Investigation of friction characteristic of wet clutch transmission oil
2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME), 2020A test method for evaluating the friction characteristic of wet clutch transmission oil is presented. This method combines the actual combination characteristic of the wet clutch to design the energy density increasing experiment, and the experiment parameters fit the actual working conditions of the clutch. The real clutch is adopted, and the friction
Penghou Zhen +3 more
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Estimation of the Clutch Characteristic Map for an Automated Wet Friction Clutch Transmission
SAE Technical Paper Series, 2016<div class="section abstract"><div class="htmlview paragraph">Higher demands on comfort and efficiency require a continuous improvement of the shift process. During the launch and shift process the clutch control is used to get a smooth and efficient behavior. In this short time of acting the shifting behavior can be rated.
Thorsten Arndt +4 more
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Estimation of Wet Clutch Friction Parameters in Automotive Transmissions
SAE Technical Paper Series, 2015<div class="section abstract"><div class="htmlview paragraph">In this paper, a new algorithm for the off-line estimation of wet clutch friction parameters is proposed for automotive transmissions, motivated by the usefulness of such an algorithm for diagnosing the condition of the clutch and transmission fluid in service.
Matthew Barr, Krishnaswamy Srinivasan
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Wet Clutch Friction Interfaces under Water-Contaminated Lubricant Conditions
Tribology Transactions, 2016ABSTRACTThe performance of wet clutches used for automatic transmissions or other applications usually includes the desired positive friction characteristics and a shudder-free torque generation. Changes in the operating variables such as the lubricant conditions influence the formation of a tribofilm, and friction characteristics and can alter the ...
N. Fatima +3 more
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Investigation of engagement characteristics of a multi-disc wet friction clutch
Tribology International, 2021Abstract A kinematic coupling model of the rotation-axial engagement process of friction elements is established based on the oil film dynamic pressure lubrication and an elastic contact model of the asperities. The engagement characteristics of the multi-disc wet friction clutch are analyzed. The equation for the transmission torque of the clutch is
Bao He-yun, Huang Wei, Lu Feng-xia
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Modelling the influence of velocity on wet friction-element friction in clutches
Industrial Lubrication and Tribology, 2018Purpose This study aims to establish a friction coefficient model relative to the rotation speed of a wet clutch engagement, which can predict friction coefficient under different stages of slipping velocity and different load pressures. In particular, the model has been improved by accounting the speed effect for the perdition of wet friction-element
Yanzhong Wang +3 more
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