liu.seSearch for publications in DiVA
Change search
ReferencesLink to record
Permanent link

Direct link
A Parametric Model for Ionization Current in a Four Stroke SI Engine
Linköping University, Department of Electrical Engineering, Vehicular Systems. Linköping University, The Institute of Technology. Linköping University, Department of Electrical Engineering.
2009 (English)In: JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME, ISSN 0022-0434, Vol. 131, no 2, 021001- p.Article in journal (Refereed) Published
Abstract [en]

A model for the thermal part of an ionization signal is presented that connects the ionization current to cylinder pressure and temperature in a spark ignited internal combustion engine. One strength of the model is that, after calibration, it has only two free parameters: burn angle and initial kernel temperature. By fitting the model to a measured ionization signal, it is possible to estimate both cylinder pressure and temperature, where the pressure is estimated with good accuracy. The model approach is validated on engine data. Cylinder pressure and ionization current data were collected on a Saab four-cylinder spark ignited engine for a variation in ignition timing and air-fuel ratio. The main result is that the parametrized ionization current model can be used to estimating combustion properties as pressure, temperature, and content of nitric oxides based on measured ionization currents. The current status of the model is suitable for off-line analysis of ionization currents and cylinder pressure. This ionization current model not only describes the connection between the ionization current and the combustion process, but also offers new possibilities for engine management system to control the internal combustion engine.

Place, publisher, year, edition, pages
2009. Vol. 131, no 2, 021001- p.
Keyword [en]
combustion, engine cylinders, ignition, internal combustion engines, ionisation
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-18273DOI: 10.1115/1.3023119OAI: diva2:217844
Available from: 2009-05-16 Created: 2009-05-15 Last updated: 2009-10-14

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Eriksson, Lars
By organisation
Vehicular SystemsThe Institute of TechnologyDepartment of Electrical Engineering
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 197 hits
ReferencesLink to record
Permanent link

Direct link