Variable compression ratio apparatus
US8539917B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 11, 2011 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Apr 12, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B75/045
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable compression ratio apparatus may be mounted at an engine receiving combustion force of an air-fuel mixture from a piston and rotating a crankshaft, and may change compression ratio of the air-fuel mixture. The variable compression ratio apparatus includes a connecting rod having a small end and a big end, the small end being formed of an eccentric bearing hole concentrically so as to be rotatably connected to the piston through a piston pin, and the crankshaft is rotatably mounted at the big end, an eccentric link having one end to which an eccentric bearing rotatably mounted in the eccentric bearing hole concentrically is connected, an eccentric link slot being formed along a length direction thereof, a variable bar formed of a variable bar gear at one end portion thereof, and connected to the eccentric link through a variable bar pin movable along the eccentric link slot, and a variable gear engaged with the variable bar gear so as to move the variable bar to a predetermined direction reciprocally, wherein a piston pin hole is formed at the eccentric bearing eccentrically, and the piston pin is inserted in the piston pin hole such that the piston, the connecting rod, an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.