Eight-stroke engine cycle
US8011331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 12, 2008 |
| Grant date | Sep 6, 2011 |
| Priority date | — |
| Expiry date | Dec 8, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An eight-stroke engine cycle may include a first stroke forming an intake stroke and including opening an intake valve and providing a first fuel mass to the combustion chamber. The second stroke may form a first compression stroke and the third stroke may form a first expansion stroke including a first power stroke. The fourth and sixth strokes may form a second and third compression strokes and the fifth and seventh strokes may form a second and third expansion strokes. A second fuel mass may be provided to the combustion chamber during the fourth or sixth stroke. The intake valve may be in a closed position during the second and third expansion strokes and an exhaust valve in communication with the combustion chamber may be in a closed position during the second and third compression strokes. The eighth stroke may form an exhaust stroke including opening the exhaust valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.