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Development of an Electronically Controlled Two-Way Roller Clutch for Transfer Case Applications
Technical Paper
2001-01-0866
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
This paper describes a new two-way, over-running mechanical clutch and electronic control for four wheel drive systems. This package is called the “Lock On Demand” (LOD) system.
The LOD system is composed of a two-way over-running roller clutch, an electronic controller, and sensors. The controller actuates the roller clutch mechanism, putting the vehicle in 2WD or 4WD based on the information from sensors which measure speed, throttle position, brake activity, etc.
The two way roller clutch is composed of a cammed inner race, a cylindrical outer race, rollers and retainer. An electro-magnetic coil is used as the activating trigger for the mechanical clutch.
In this paper, the LOD system is introduced, and details are given for the operation of the roller clutch and controller. In addition, the results from a finite element analysis (FEA) are included.
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Authors
Citation
Goto, S., Monahan, R., Bailey, T., Okada, K. et al., "Development of an Electronically Controlled Two-Way Roller Clutch for Transfer Case Applications," SAE Technical Paper 2001-01-0866, 2001, https://doi.org/10.4271/2001-01-0866.Also In
SAE 2001 Transactions Journal of Passenger Cars - Mechanical Systems
Number: V110-6; Published: 2002-09-15
Number: V110-6; Published: 2002-09-15
References
- Takasaki Toshiharu Development of a New 4WD System: All-Mode 4WD SAE Technical paper 970684 1997
- Hayashi Masahiko Development of TOD (Torque On Demand) 4WD system Automotive Engineers of Japan, Inc. 9742332 1997
- “Rolling Element Bearings” Hamrock, Bernard J. Anderson, William J. NASA Ref. Publ. 1105 June 1983