Fuel igniter and head for use in diesel engines and related systems and methods
US6739308B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 24, 2002 |
| Grant date | May 25, 2004 |
| Priority date | — |
| Expiry date | May 24, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention provides a piston for a diesel engine that reduces emissions generated during the combustion of fuel in a combustion chamber and a head that allows more air to flow into and out of the combustion chamber. The piston includes an igniter that ignites fuel injected into the combustion chamber and a piston bowl. The piston bowl agitates air in the combustion chamber to quickly mix the fuel and air before the igniter ignites the fuel and to reduce carbon build-up from unburned fuel in the combustion chamber. By igniting the fuel shortly after it is injected into the combustion chamber, the igniter reduces the time between injection and combustion of the fuel in the combustion chamber. Thus, the amount of NOx produced during combustion is reduced. Furthermore, injection of the fuel can commence when the piston is closer to top dead center and thus more power can be generated. By allowing more air to flow into and out of the combustion chamber, the amount of unburned fuel in the combustion chamber is reduced and thus the amount of particulates produced during combustion is reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.