No.1004E 2008Special Issue on Industry-Related Products Development of Exclusive Fluid for AWD Coupling |
| Category | TECHNICAL PAPER |
|---|---|
| Author | J. ANDO Automotive Components Engineering Department, Bearing & Driveline Operations Headquarters N. SAKAI Development Department, Toyoda-Koki Automotive TORSEN Co. T. SAITO Material Engineering R&D Department, Research & Development Center, PhD H. KUWABARA Material Engineering R&D Department, Research & Development Center O. KUROSAWA Transportation Lubricants R&D Group, Lubricants Research Laboratory, Nippon Oil Corporation |
| Abstract | This paper describes the analysis of the shudder generation mechanism in AWD couplings and the development of a special Toyoda ITCC Fluid "TIF" enabling an Intelligent Torque Controlled Coupling ("ITCC") with larger capacity that is applicable to large-size vehicles and that achieves better fuel efficiency due to size and weight reduction of the rear drivetrain. Optimization of the additives and base oil of this fl uid, which is exclusive for AWD couplings, has improved anti-shudder durability, reduced maximum torque at low temperatures, and achieved both reliability improvement and weight reduction of the driveline. |
| Keyword | AWD coupling, fluid, additives, metallic detergent, EP-agent, dispersant, FM, synthetic fl uid, shudder |
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