System and method for detecting an air leak in an engine
US6684869B2 · kind B2 · utility
8Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 11, 2002 |
| Grant date | Feb 3, 2004 |
| Priority date | — |
| Expiry date | Jul 27, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system and method for detecting an air leak within an engine is provided. The engine includes an intake manifold communicating with an engine cylinder. The method includes measuring an exhaust gas constituent in exhaust gases from the engine when the engine is operating in an idle operating mode. The method further includes determining whether the air leak is present in the engine based on a measured exhaust gas constituent, a first air-fuel correction value, and a second air-fuel correction value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.