Variable compression piston arrangement for internal combustion engine
US4934347A · kind A · utility
25Cited by
5References
17Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 15, 1988 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The pressure prevailing in a variable volume chamber which controls the compression ratio developed by a piston, is used control the movement of a valve which regulates the supply and draining of the chamber. During high load the high pressure is used to drain the chamber while under light load the lower pressure permits the chamber to be supplied with hydraulic fluid in a manner which tends to fill the same during induction phases and the like when the pressure in the cylinder is low.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.