Lubrication of rechargeable hybrid vehicle engine and hybrid vehicle comprising a range extender
US12247178B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2022 |
| Grant date | Mar 11, 2025 |
| Priority date | — |
| Expiry date | Mar 30, 2042 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The application concerns the use of a lubricant composition of grade 0W-8 according to the SAEJ300 classification, comprising at least one base oil, from 1 to 1000 ppm of at least one friction modifying additive and from 0.1 to 10% by weight of at least one polymer improving the viscosity index, said lubricant composition having kinematic viscosity measured at 40° C. according to standard ASTM D445 lower than or equal to 20 mm2/s, kinematic viscosity measured at 100° C. according to standard ASTM D445 lower than 5 mm2/s, and Noack volatility measured at 250° C. according to standard CEC-L-40-A-93 of between 10 and 85%, preferably between 25 and 85%, more preferably between 60 and 85%, for the lubrication of a rechargeable hybrid vehicle engine or a hybrid vehicle engine comprising a range extender.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.