This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
An Analysis of Viscous Coupling Torque Transmission Characteristics and Hump Phenomenon
Annotation ability available
Sector:
Language:
English
Abstract
Viscous couplings have started to find widespread use in automobiles in recent years and it is important to have a good understanding of their torque transmission characteristics. This paper presents the results of transmitted torque calculations, which took into account temperature changes in viscous coupling components, and the findings of experiments carried out to verify the calculations. The results obtained made it possible to predict quantitatively the degree of influence that various factors have on the torque transmission performance of a viscous coupling.
In addition, a mechanism is proposed for explaining the occurrence of the torque hump phenomenon. A calculation model was developed on the basis of this mechanism and used to calculate torque hump characteristics and the interval from the onset of viscous coupling operation to the occurrence of a hump. The calculated results are shown to correlate well with experimental data.
Recommended Content
| Technical Paper | Applications of Viscous Couplings for Traction Control in Passenger Cars |
| Technical Paper | New Multi - link Suspension |
| Technical Paper | Viscous Couplings in 4WD Vehicles: Application of Computational Modelling |
Citation
Takemura, T. and Niikura, Y., "An Analysis of Viscous Coupling Torque Transmission Characteristics and Hump Phenomenon," SAE Technical Paper 900558, 1990, https://doi.org/10.4271/900558.Also In
References
- Peschke Wolfgang “A Viscous Coupling in the Drive Train of an All-Wheel Drive Vehicle,” SAE Paper 860386
- Tung Simon C.Y. Lindon James L. “Modeling Torque Converter Clutch Viscous Damper Performance,” SAE Paper 850459
- Niikura Yasuhiro Takemura Toji “An Analysis of the Torque Transmission Characteristics of a Viscous Coupling,” JSAE Spring Meeting May 1988
- Takemura Toji Niikura Yasuhiro “Tribological Issues of a Viscous Coupling for 4WD Vehicles,” Symposium on “Tribology Supporting the Automobile: Today and Tomorrow,” JSAE April 1988