Oil supply system for a valve operating mechanism in internal combustion engines
US4729349A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1986 |
| Grant date | Mar 8, 1988 |
| Priority date | — |
| Expiry date | Aug 21, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02F2200/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Oil is supplied from an oil pump as working oil to hydraulic lash adjusters and also as lubricating oil to journals and cams of a camshaft. The oil passage system includes a first supply passage connected to the oil pump, a second supply passage connected between the first supply passage and a first distribution passage coupled to a group of hydraulic lash adjusters, a joint passage connected to the first distribution passage, and a second distribution passage coupled to the joint passage and connected to another group of hydraulic lash adjusters. The second distribution passage is connected by air vent passages to a lubricating oil passage which supplies the camshaft with the lubricating oil. The joint passage is connected to one of the camshaft journals by a relief passage having a relief valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.