Direct-injection spark-ignition internal combustion engine
US7690348B2 · kind B2 · utility
1Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2005 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Nov 20, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In the top face of a piston (6), there is formed a cavity (30) having a bottom surface (32) which slopes downward toward an exhaust side and which includes a raised part (32a) extending from near the center of the bottom surface to an intake-side wall surface. The cavity guides fuel spray (15) which has been injected by an injector (12) and passed by an electrode part (14a) of a spark plug (14), to arrive near the electrode part of the spark plug again in the form of an air-fuel mixture (15a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.