Exhaust system of a multi-cylinder internal combustion engine and a method of cleaning an exhaust gas
US6880328B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2002 |
| Grant date | Apr 19, 2005 |
| Priority date | — |
| Expiry date | Jun 20, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An exhaust system of a multi-cylinder internal combustion engine includes at least one first gas sensor, which is sensitive for at least one component of the exhaust gas and is arranged in the exhaust system, for determining an air/fuel ratio supplied to the internal combustion engine. It also includes a regulating device for regulating the air/fuel ratio as a function of a signal supplied by the gas sensor and at least one first catalytic converter arranged in the exhaust system. At least one first catalytic converter is arranged in a position of the exhaust system close to the internal combustion engine so that it is upstream from the at least one first gas sensor in the direction of flow of an exhaust gas of the internal combustion engine, and the regulation device includes a regulator which receives the signal of the first gas sensor as input, and in which an algorithm for cylinder-selective determination and regulation of the air/fuel ratio is stored.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.