Method of estimating exhaust gas recirculation in an intake manifold for an internal combustion engine
US5537977A · kind A · utility
23Cited by
22References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1995 |
| Grant date | Jul 23, 1996 |
| Priority date | — |
| Expiry date | Jan 30, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of estimating exhaust gas recirculation in an intake manifold for an internal combustion engine includes the steps of determining a volumetric efficiency value of the intake manifold, determining whether a speed of the engine is accelerating, getting a manifold unfilling constant if the speed of the engine is not accelerating, getting a manifold filling constant if the speed of the engine is accelerating, calculating a K-factor based on the volumetric efficiency value and either the manifold filling constant or manifold unfilling constant, and using the K-factor to modify spark of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.