Medium speed diesel engine lubricating oils
US5174915A · kind A · utility
11Cited by
3References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1991 |
| Grant date | Dec 29, 1992 |
| Priority date | — |
| Expiry date | Nov 12, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is provided a lubricating oil composition for use in medium speed diesel engines, such as railroad locomotive diesel engines. This lubricating oil composition comprises an oil of lubricating viscosity and a minor amount of a reaction product that is obtained by reacting an alkyl-substituted dicarboxylic acid compound selected from the group consisting of alkyl-substituted dicarboxyic acids, alkyl-substituted dicarboxylic acid anhydrides, and mixtures thereof with a basic salt of aminoguanidine under selected conditions that will provide a product rich in alkyl bis-3-amino-1,2,4-triazole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.