Air-to-Cylinder Observer on a Turbocharged SI-Engine with Wastegate
2001 (English)Conference paper (Refereed)
Observers for air mass flow to the cylinder is studied on a turbocharged SI-engine with wastegate. A position change of the wastegate influences the residual gas mass and causes the volumetric efficiency to change, which produces a transient in the air mass flow to the cylinder. Two standard methods of estimating air-to-cylinder are investigated. A new nonlinear air-to-cylinder observer is suggested with two states: one for intake manifold pressure and one for the offset in in-cylinder air mass compared to expected through the volumetric efficiency. The observers are validated on intake manifold pressure data from a turbocharged spark ignited production engine with wastegate.
Place, publisher, year, edition, pages
2001. , 33-40 p.33-40 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-23990DOI: 10.4271/2001-01-0262Local ID: 3545ISBN: 9780768007329OAI: oai:DiVA.org:liu-23990DiVA: diva2:244306