Application of Fluid Transport Phenomenon to Transmission Band Friction Material

Grzesiak, Anthony; Lam, Robert C.

doi:10.4271/922098

Cited by 3 publications

References 5 publications

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Prediction of wet band brake dynamic engagement behaviour Part 1: Mathematical model development

Fujii

Snyder

2001

Proceedings of the Institution of Mechanical Engineers, Part D:

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A wet (oil-lubricated) band brake is a critical component in the operation of automatic transmission systems in automotive applications. Its engagement characteristics significantly affect the quality of automatic shifting. During the automatic transmission design process, it is important to characterize band engagement behaviour accurately under a wide range of operating conditions. This paper describes a mathematical model which predicts the dynamic engagement behaviour of the wet band brake. The space-time-dependent model includes the effects of squeeze film, asperity deformation, porous oil diffusion, heat transfer and loading pressure distribution caused by a self-energizing mechanism. The model can be readily implemented and efficiently executed on a computer as a standalone program or as a subroutine for automatic transmission shift simulations. Knowledge of band engagement obtained through the model is expected to lead to improved band design and automatic transmission shift calibration processes.

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Prediction of wet band brake dynamic engagement behaviour Part 1: Mathematical model development

Fujii

Snyder

2001

Proceedings of the Institution of Mechanical Engineers, Part D:

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Automatic Transmission Lubricants

Vickerman¹,

Tipton²

2012

Automotive Lubricants and Testing

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This chapter will cover the functions, properties, and composition of automatic transmission fluids (ATFs), along with a brief description and history of original equipment manufacturer (OEM) ATF specifications for passenger cars. The cited works include an eclectic mixture of materials designed to give the reader interested in further study some historic and some more modern information, along with information from different points of view when possible. By no means is this meant to be a comprehensive review; it is only meant to be a small window into the world of transmission lubricant technology.

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The Influence of Fillers on Paper-Based Friction Materials Relative to Wet Clutch Slip Characteristics

Nakagawa¹

1997

SAE Technical Paper Series

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Application of Fluid Transport Phenomenon to Transmission Band Friction Material

Cited by 3 publications

References 5 publications

Prediction of wet band brake dynamic engagement behaviour Part 1: Mathematical model development

Prediction of wet band brake dynamic engagement behaviour Part 1: Mathematical model development

Automatic Transmission Lubricants

The Influence of Fillers on Paper-Based Friction Materials Relative to Wet Clutch Slip Characteristics

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