Results 291 to 300 of about 20,051 (350)

Paper 16: Friction in Wet Clutches

Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1967
This 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, 2010
Abstract 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
openaire   +1 more source

Investigation of friction characteristic of wet clutch transmission oil

2020 3rd International Conference on Electron Device and Mechanical Engineering (ICEDME), 2020
A 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, Haizhen An, Yuexing Wang, Pujian Wang   +3 more
openaire   +1 more source

Control-oriented modeling of wet clutch friction considering thermal dynamics

Mechatronics
Seungin Shin, Seibum B. Choi
openaire   +2 more sources

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
openaire   +1 more source

Characteristics analysis and nonlinear control of a digital hydraulic pressure tracking system for high-speed helicopter wet friction clutch

Transactions of the Canadian Society for Mechanical Engineering
The reliability and control precision of the engagement and disengagement of wet friction clutch are crucial to the transmission of high-speed helicopters.
Qiang Gao, Huayi Liu, Mingyang Niu
semanticscholar   +1 more source

Optimization Design of Oil Groove Shape on the Surface of Friction Plate in High-Speed Wet Clutch Aimed at Minimizing Drag Torque

Journal of tribology, 2023
The wet clutch, a crucial component of the vehicle transmission system, experiences high-frequency impact and friction between the friction plate and the steel plate under high-speed separation conditions.
Lin Zhang, Yuansheng Zhang, W. Chao, Yunbing Yan   +3 more
semanticscholar   +1 more source

Wet Clutch Friction Interfaces under Water-Contaminated Lubricant Conditions

Tribology Transactions, 2016
ABSTRACTThe 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, P. Marklund, A. P. Mathew, R. Larsson   +3 more
openaire   +1 more source

Modelling the influence of velocity on wet friction-element friction in clutches

Industrial Lubrication and Tribology, 2018
Purpose 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, Chao Guo, Yuan Li, Guoxing Li   +3 more
openaire   +1 more source

Thermal Elastohydrodynamic Coupling Characteristics of Wet Clutch Under Time-Varying Friction Interface Parameters

2025 3rd International Conference on Control and Robot Technology (ICCRT)
Friction interface parameters of wet clutches vary with time during its sliding. The thickness of the oil film changes with the contact ratio of micro-convex peaks, providing lubrication boundary conditions. Due to the interaction of temperature, strain,
Bin Sheng, Shengping Fu, Xudong Li
semanticscholar   +1 more source