Variable compression ratio device
US8393307B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 16, 2010 |
| Grant date | Mar 12, 2013 |
| Priority date | — |
| Expiry date | Oct 1, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B75/044
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A variable compression ratio device including a piston, a crankshaft, and a connecting rod may include an eccentric bearing that contacts an exterior circumference of the piston pin, wherein an exterior circumference of the eccentric bearing contacts an interior circumference of a ring formed at the small end of the connecting rod, a ratchet rod slidably coupled inside the piston pin and movable along a longitudinal direction, a variable slider that selectively contacts one of both ends of the ratchet rod, and that is disposed at both sides of a cylinder for pushing the one of both ends of the ratchet rod in an opposite direction, and a guide plate for reciprocally moving both variable sliders along a vertical direction of the ratchet rod.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.