Engine lubricating oil comprising a quaternary ammonium hydroxide
US4902437A · kind A · utility
2Cited by
5References
42Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | Dec 29, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The presence of a minor amount of certain quaternary ammonium hydroxides in an engine lubricating oil has been found to be effective in reducing and controlling combustion chamber deposits and octane requirement increase in spark ignition internal combustion engines and in reducing oil consumption in diesel engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.