Internal combustion engine including variable compression ratio
US10145299B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2015 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | May 14, 2035 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H9/26
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An engine comprises a crankcase and a crankshaft. The crankshaft has a central main portion, a crankpin and a crankshaft web. A crank member is rotatably and eccentrically mounted on the crankpin. An external crank member gear meshes with an external drive shaft gear. A driven portion of the drive shaft is located at a side of the crankshaft web which is opposite to its side where the crankpin is located and is drivably coupled via a first transmission to an intermediate member which is rotatably mounted to the crankshaft. The intermediate member is drivably coupled to a control shaft portion of a control shaft via a second transmission which control shaft portion is located at axial distance of the driven portion of the drive shaft and the control shaft is rotatable at a fixed rotational position with respect to the crankcase under operating conditions at fixed compression ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.