Process intended for self-ignition control in a four-stroke engine
US6708680B2 · kind B2 · utility
11Cited by
7References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2001 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | May 15, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Self-ignition control in a four-stroke internal-combustion engine, comprising several intake means and several exhaust means per cylinder. In order to reduce nitrogen oxide emissions during part-load operation, the exhaust means of each cylinder open (1 and 2) respectively during the exhaust phase so as to discharge the burnt gases from the cylinder and during the intake phase so as to reintroduce burnt gases into the cylinder, the time of opening (3) of an intake means being deferred so to allow fresh gas to pass into the cylinder after partial filling thereof with the burnt gases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.