Cooling arrangement for a viscous coupling utilized as a torque converter bypass
US4462492A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 11, 1981 |
| Grant date | Jul 31, 1984 |
| Priority date | — |
| Expiry date | Aug 11, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2045/0294
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A bypass drive line for a torque converter type automatic transmission in which the bypass drive line includes a viscous coupling and automatic transmission fluid is selectively passed through the periphery of the viscous coupling to provide a flow of cooling fluid around the coupling. The fluid flowing through the coupling enters at one face of the coupling adjacent the periphery of the coupling and then flows around the periphery of the coupling through a major sector of the circular plane of the coupling and then exits at the opposite face of the coupling at a location spaced from the entry location by a minor sector of the circular plane of the coupling, thereby providing a circuitous path through the coupling which provides a flow rate of cooling fluid through the coupling that varies in proportion to the viscosity, and thereby the temperature, of the cooling fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.