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Research Papers

A Systematic Model for Dynamics and Control of Dual Clutch Transmissions

[+] Author and Article Information
Yonggang Liu

State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, Chinaandylyg@umd.umich.edu

Datong Qin

State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, Chinadtqin@cqu.edu.cn

Hong Jiang

Transmission and Driveline Research and Advanced Engineering, Ford Motor Company, Dearborn, MI 48128hjiang@ford.com

Yi Zhang

Department of Mechanical Engineering, University of Michigan-Dearborn, Dearborn, MI 48128anding@umich.edu

J. Mech. Des 131(6), 061012 (May 21, 2009) (7 pages) doi:10.1115/1.3125883 History: Received July 25, 2008; Revised March 31, 2009; Published May 21, 2009

This paper focuses on the dynamic modeling and analysis of dry dual clutch transmissions (DCTs) during vehicle launch and shifts. The system model incorporates the clutch torque control strategies for DCT vehicle launch and shifts. This model is capable of quantitatively analyzing and predicting dual clutch transmission dynamic characteristics and performance metrics, such as launch response and shift patterns, thus providing an analytical tool for DCT torque control and calibration. The model is applied for a test vehicle equipped with a dry dual clutch transmission. The simulation data on vehicle launch and shift dynamic characteristics are highly agreeable to the data obtained on the test vehicle.

Copyright © 2009 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Dual clutch transmission structural layout

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Figure 2

Dual clutch transmission dynamic model

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Figure 3

Engine output torque model

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Figure 4

Clutch torque characteristics in upshift

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Figure 5

Clutch torque characteristics in downshift

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Figure 6

Clutch 1 torque during launch

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Figure 7

Engine and clutch speeds in launch

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Figure 8

Output torque during launch

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Figure 9

Clutch torque, engine, and clutch speeds during creep and inching

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Figure 10

Vehicle speed and target speed during creep and inching

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Figure 11

Clutch torque, engine, and clutch speeds during uphill driving

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Figure 12

Clutch torque during 1–2 upshift

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Figure 13

Engine and clutch speeds in 1-2 upshift

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Figure 14

Output torque in 1-2 upshift

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Figure 15

Clutch torque in 5-4 downshift

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Figure 16

Engine and clutch speeds in 5-4 downshift

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