Method for reducing the exhaust emissions from an engine system
US7104044B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 2003 |
| Grant date | Sep 12, 2006 |
| Priority date | — |
| Expiry date | Mar 23, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/62
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for reducing the exhaust emissions during the cold start of an internal combustion engine (3). According to the method, a starter motor (4) is operated in parallel with the internal combustion engine (3) until the operating temperature of an exhaust gas catalytic converter (1) is reached, to thereby relieve the power demand on the internal combustion engine and thereby to minimize the production of pollutants. The heating of catalytic converter (1) can preferably be accelerated by retarded spark timing, by a delayed shift in automatic transmission (6) and/or by an electrical heater coupled to catalytic converter (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.