Application of Simulation Based Methods in Development of Wet Clutch System Eaton Technologies Pvt., Limited

Format:

Conference/Event

Author/Creator:

Madhavan, Madhavan, author.

Contributor:

Barnholt, Mark

Pandit, Ganesh

Suppiger, Robert

Conference Name:

International Mobility Conference (2012-01-08 : New Delhi, India)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Pune, MH The Automotive Research Association of India 2012

Summary:

The increased trend of automatic and automated transmissionsacross a breadth of applications is one of the market drivers forthe development of wet clutch systems. Key product differentiatorsthat drive the use of wet clutches in specific applications are (a)Compactness, (b) Low inertia, (c) Higher energy density, (d) BetterNVH characteristics, and (e) Longer wear life.The above-stated product differentiators are dependent onperformance of both the clutch cooling system and the frictionsystem for two different operating events, namely engagement anddisengagement. During engagement, slip under load between theclutch plates generates heat, which must be carried away by theoil, necessitating a high oil flow demand to all friction surfaces.Failing to achieve this leads to excessive plate temperatures andwear, ultimately resulting in poor performance and reduced clutchlife. On the other hand, disengagement events demand minimal oilflow, failing which may lead to poor fuel economy and shiftperformance due to high viscous drag. These two conflictingrequirements make it critical to have an optimized design thatconsiders multiple performance measures.Eaton has been successful in developing Computational FluidDynamics (CFD)-based models for prediction of performance measureslike flow uniformity, plate temperature, drag torque and drag decaytime using commercial software tools like STAR-CCM+® and in-housecustom codes. The presented paper gives an overview of thedifferent types of methods developed at Eaton for wet clutchperformance prediction, challenges faced during development,validation with experimental data, and performance improvements andbenefits achieved through application of the methods

Notes:

Vendor supplied data

Publisher Number:

2012-28-0022

Access Restriction:

Restricted for use by site license