Browse Publications Technical Papers 2008-01-0290
2008-04-14

Estimation of Cylinder-Wise Combustion Features from Engine Speed and Cylinder Pressure 2008-01-0290

Advanced engine control and diagnosis strategies for internal combustion engines need accurate feedback information from the combustion engine. The feedback information can be utilized to control combustion features which allow the improvement of engine's efficiency through real-time control and diagnosis of the combustion process.
This article describes a new method for combustion phase and IMEP estimation using one in-cylinder pressure and engine speed. In order to take torsional deflections of the crankshaft into account a gray-box model of the crankshaft is identified by subspace identification. The modeling accuracy is compared to a stiff physical crankshaft model. For combustion feature estimation, the identified MISO (multiple input single output) system is inverted. Experiments for a four-cylinder spark-ignition engine show the superior performance of the new method for combustion feature estimation compared to a stiff model approach.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Members save up to 18% off list price.
Login to see discount.
We also recommend:
TECHNICAL PAPER

An Evaluation of Turbulent Kinetic Energy for the In-Cylinder Flow of a Four-Valve 3.5L SI Engine Using 3-D LDV Measurements

970793

View Details

TECHNICAL PAPER

Identification and Validation of an Air Mass Flow Predictor Using a Nonlinear Stochastic State Representation

2000-01-0935

View Details

TECHNICAL PAPER

Development of a New Intake System for a Small Spark-Ignition Engine. Modeling the Flow Through the Inlet Valve

2003-01-0369

View Details

X