Lubricant for dual clutch transmission
US6528458B1 · kind B1 · utility
20Cited by
20References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2002 |
| Grant date | Mar 4, 2003 |
| Priority date | — |
| Expiry date | Apr 19, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2060/14
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions comprising (a) an oil of lubricating viscosity; (b) 2,5-dimercapto-1,3,4-thiadiazole (DMTD), a derivative of DMTD, or mixtures thereof; (c) a friction modifier; and (d) a dispersant, are useful for lubricating a transmission having a plurality of wet clutches and a plurality of partial power transmission shafts, wherein shifting of gears occurs by a process comprising synchronization of an engaged and a non-engaged partial transmission shaft and engagement of a wet clutch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.