Experimental Methodologies To Determine Diaphragm Spring Clutch Characteristics

Ercole, G.; Mattiazzo, Giuliana; Mauro, Stefano; Velardocchia, Mauro; Amisano, F.; Serra, Gabriele

doi:10.4271/2000-01-1151

Cited by 10 publications

(5 citation statements)

References 1 publication

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“…This is in contrast with the data in [10] where the torque is decreasing with temperature. Although in the experiments performed here the clutch mostly has a medium to high temperature and could comply with the data in [11]. In summary, the model is a three state model with one static non-linearity.…”

Section: Including Fast Dynamicsmentioning

confidence: 99%

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Torque model with fast and slow temperature dynamics of a slipping dry clutch

Myklebust

Eriksson

2012

2012 IEEE Vehicle Power and Propulsion Conference

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Abstract-The transmitted torque in a slipping dry clutch is studied in experiments with a heavy duty truck. It is shown that the torque characteristic has little or no dependence on slip speed, but that there are two dynamic effects that make the torque vary up to 900 Nm for the same clutch actuator position. Material expansion with temperature can explain both phenomena and a dynamic clutch temperature model with two different time constants is developed. The dynamic model is validated in experiments, with an error of only 3% of the maximum engine torque, and is shown to improve the behavior significantly compared to a static model.

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Section: Including Fast Dynamicsmentioning

confidence: 99%

“…However there are large variations with wear. In [11] M c initially decreases with temperature for low temperatures and then increases for medium and high temperatures. Similarly there are variations with wear and in addition temperature-torque hysteresis are reported.…”

Section: Introductionmentioning

confidence: 99%

Torque model with fast and slow temperature dynamics of a slipping dry clutch

Myklebust

Eriksson

2012

2012 IEEE Vehicle Power and Propulsion Conference

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“…Such as the requirement of smooth engagement, should try to engage in no-load. Friction clutch rapidly, allowing the main, driven shaft clutch at any speed; engagement shock and vibration are small, overload protection function [1,8]. Fig.…”

Section: Introductionmentioning

confidence: 99%

Analysis on the Influence of the Strength and Stiffness under the Contact Conditions for Friction Plate

Zhao

Wang²,

Wang

2013

KEM

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This paper mainly consider the friction plate finite element modeling frictional contact conditions between the slices of components, friction plate assembly of the strength and stiffness of the. Through modal analysis of force and its distribution in different layers of friction plate assembly friction plate, a friction plate component analysis layers, friction plate by the effect of preload on the friction plate assembly strength, and in this state analysis of the friction plate stiffness. On the contact state under different friction plate layers, different pre tightening force under stress, stiffness were compared, the effect of contact on the stiffness and friction plate component strength.

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“…However there are large variations with wear. In Ercole et al [2000] M trans,k initially decreases with temperature for low temperatures and then increases for medium and high temperatures. Similarly there are variations with wear and in addition temperature-torque hysteresis are reported.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Thermal Expansion in a Dry Clutch on Launch Control

Myklebust

Eriksson

2013

IFAC Proceedings Volumes

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A dry clutch model with thermal dynamics is added to a driveline model of a heavyduty truck equipped with an automated manual transmission. The model captures driveline oscillations and can be used to simulate how different clutch-control strategies affect vehicle performance, drivability and comfort. Parameters are estimated to fit a heavy-duty truck and the complete model is validated with respect to shuffle, speed trajectory, clutch torque and clutch lock-up/break-apart behavior. The model shows good agreement with data. Furthermore the model is used to study the effect of thermal expansion in the clutch on launch control. It is shown that the effect of thermal expansion, even for moderate temperatures, is significant in launch control applications.

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Experimental Methodologies To Determine Diaphragm Spring Clutch Characteristics

Cited by 10 publications

References 1 publication

Torque model with fast and slow temperature dynamics of a slipping dry clutch

Torque model with fast and slow temperature dynamics of a slipping dry clutch

Analysis on the Influence of the Strength and Stiffness under the Contact Conditions for Friction Plate

The Effect of Thermal Expansion in a Dry Clutch on Launch Control

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