Reciprocating internal combustion engine
US4041924A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1975 |
| Grant date | Aug 16, 1977 |
| Priority date | — |
| Expiry date | Sep 15, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine comprises a cylinder having a horizontal axis, one end of the cylinder being formed as a combustion chamber and the other end opening into a crankcase receiving a lubricating atmosphere. A piston slidable in the cylinder has a space therein communicating with the crankcase. The piston is formed with grooves of rectangular cross-section with a base and a pair of transverse surfaces. A scraper groove furthest from the combustion chamber receives a scraper ring and has orifices in its base communicating with the piston space, the other sealing grooves receiving piston rings, annular gaps between the piston and cylinder being left on each side of the piston and scraper rings. The annular gaps are placed in continuous communication with the groove bases by at least one recess on each transverse surface of a sealing groove and by at least one recess on that transverse surface of the scraper groove which is nearest the combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.