Variable compression ratio engine with hydraulically actuated locking system
US10746095B2 · kind B2 · utility
0Cited by
1References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 22, 2019 |
| Grant date | Aug 18, 2020 |
| Priority date | — |
| Expiry date | Feb 10, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D15/02
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Methods and systems are provided for a VCR engine. In one example, the VCR engine includes a VCR mechanism that mechanically locks the engine pistons at a high compression ratio or a low compression ratio, utilizing locking pins that engage with eccentrics. Movement of the locking pins may be actuated by a valve that controls hydraulic pressure in the VCR mechanism where varying the hydraulic pressure adjusts engagement/disengagement of the locking pins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.