Method of reduction emissions in the exhaust gases of an internal combustion engine
US6609365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Aug 26, 2003 |
| Priority date | — |
| Expiry date | Dec 11, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of reducing emissions in the exhaust gases of an internal combustion engine that has at least one cylinder to which an air/fuel mixture is supplied when a crankshaft of the internal combustion engine is rotated, at least one intake valve, at least one exhaust valve, and a piston reciprocating between a top dead-center position and a bottom dead-center position in the cylinder. The method comprises the following steps: an air/fuel mixture with a lambda value greater than 1 is supplied to the cylinder, an electric motor/generator connected to the crankshaft maintains an essentially constant predetermined speed of the crankshaft, and the exhaust valve is controlled so that it opens before the piston has passed the bottom dead-center position is disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.