Two-stroke oil injection system
US6443109B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 6, 2001 |
| Grant date | Sep 3, 2002 |
| Priority date | — |
| Expiry date | Jun 6, 2021 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An oil injection system for two-stroke engines, including a pressure regulator located within an oil reservoir, the pressure regulator selectively returning a portion of pumped oil directly back to the oil reservoir to prevent oil from exiting the reservoir at a higher than desired pressure. The pressure regulator allows a portion of the pumped oil from the oil reservoir to flow through the oil line to a solenoid valve, where the pressure regulator and solenoid valve together meter the flow of oil to a plurality of oil injectors for injection into the engine cylinders. Locating the pressure regulator within the oil reservoir eliminates the need for a return line from the solenoid valve to the oil reservoir, thus simplifying the solenoid design as well as the overall design of the oil injection system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.