Variable compression ratio engine that varies compression ratio
US9169774B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2014 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Jun 23, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B75/045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable compression ratio engine that changes the compression ratio may include a piston disposed to be reciprocated in a cylinder by combustion, a crankshaft rotatably disposed at a predetermined distance from the piston, a crank arm with one end connected with the piston and the other end connected with the crankshaft, a connecting rod connected with the crank arm through a crankpin and with the piston through a piston pin and having an oil chamber, an eccentric cam disposed between the crankpin and the connecting rod and being off-center from the crankpin, a variable piston disposed in the oil chamber to be moved by supplied oil, and a link connecting the variable piston with the eccentric cam to rotate the eccentric cam with movement of the variable piston.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.