Engine oil return system
US7299781B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 24, 2006 |
| Grant date | Nov 27, 2007 |
| Priority date | — |
| Expiry date | Mar 24, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01M2011/023
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oil return passage for returning oil from a cylinder head to an oil pan is arranged along the downward first side surface of an engine that is mounted in a vehicle such that a center axis of a cylinder thereof is slanted with respect to a vertical direction of the vehicle. An oil return extension pipe is coupled to an outlet end of the oil return passage, and extends toward a second side surface of the engine that is opposite from the first side surface on which the oil return passage is provided. Thus, engine oil can be reliably returned to the oil pan from the cylinder head of the engine even when the vehicle is experiencing high acceleration in a direction that tends to cause backflow of the oil through the engine oil return system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.