Gasoline composition for reducing intake valve deposits in port fuel injected engines
US5006130A · kind A · utility
32Cited by
13References
38Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1989 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Jun 28, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L1/305
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Intake valve deposits in port fuel injected engines are reduced by using a mixture of (a) of about 2.5 ppmw or higher of basic nitrogen in the form of an oil-soluble aliphatic alkylene polyamine containing at least one olefinic polymer chain, said polyamine having a molecular weight of about 600 to about 10,000, and (b) from about 75 ppmw to about 125 ppmw based on the fuel composition of certain oil-soluble olefinic polymers, poly(oxyalkylene) alcohol, glycol or polyol or mono or di ether thereof, non-aromatic oils or polyalpha olefins. The fuels are also compatible with carburetor and throttle body injected engines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.