Engine assembly including gearbox for varying compression ratio of engine assembly using stationary actuator
US11149825B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2020 |
| Grant date | Oct 19, 2021 |
| Priority date | — |
| Expiry date | Apr 16, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2200/2097
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An engine assembly includes a crankshaft, a control shaft, a drive gear fixed to the crankshaft, a carrier, a first planetary gear set, an actuator, and a second planetary gear set. The first planetary gear set includes a first sun gear fixed to ground, a first ring gear engaged with the drive gear, and a first planet gear rotatably mounted on the carrier and engaged with the first ring gear and the first sun gear. The second planetary gear set includes a second sun gear fixed to the actuator, a second ring gear coupled with the control shaft, and a second planet gear rotatably mounted on the carrier and engaged with the second ring gear and the second sun gear. The actuator is operable to rotate the second sun gear and thereby adjust a ratio of a rotational speed of the crankshaft to a rotational speed of the control shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.