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Comparison Between Measured and Simulated Transients of a Turbocharged Diesel Engine
ISSN: 0148-7191, e-ISSN: 2688-3627
Published November 01, 1994 by SAE International in United States
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An engine model developed earlier is validated through comparison between measurements and simulations of transient situations. In particular boost pressure build up is studied. The engine model is intended for use in computer simulation of transient behavior in drivetrain and vehicle systems.
The model studied is semi-empiric. Some of the model properties are empiric: engine data in steady state operation and mappings of compressor and turbine performance. Others are physical properties, e.g. displacement and compression radio.
The measurements have been carried out in a transient engine test bed. In the measurements the delivered fuel amount is measured, as opposed to pedal position, and thus the engine control system and fuel injection system are not included in the comparisons.
The time constants of the measured and the simulated boost pressure buildups are compared for eleven different step changes in pedal position. All step changes go from lower to higher pedal position. The engine speed is held approximately constant.
Despite the simplifications in the model studied, it shows good agreement with the measurements. It is concluded that the agreement can be improved further by introducing a time delay in the model.
CitationBerglund, S., "Comparison Between Measured and Simulated Transients of a Turbocharged Diesel Engine," SAE Technical Paper 942323, 1994, https://doi.org/10.4271/942323.
- Berglund S. A Model of Turbocharged Engines as Dynamic Drivetrain Members SAE Paper No. 933050 1993 1993 SAE Transactions
- Tsai S.-C. Goyal M.R. Dynamic Turbocharged Diesel Engine Model for Control Analysis and Design SAE Paper No. 860455 1986
- Adams T. G. Transient and Part Throttle Performance of Supercharged Engines SAE Paper No. 900530 1990
- Phillips A.W. Assanis D.N. Badgley P. Development and Use of a Vehicle Powertrain Simulation for Fuel Economy and Performance Studies SAE Paper No. 900619 1990
- Hori Y. et. al. Computer Simulation of Vehicle Fuel Economy and Performance SAE Paper No. 860364 1986
- Hendricks E. Sorenson S.C. Mean Value Modelling of Spark Ignition Engines SAE Paper No. 900616 1990
- Hong C.W. Watson N. Turbocharged SI Engine Simulation under Steady and Transient Conditions SAE Paper No. 880122 1988
- Watson N. Janota M.S. Turbocharging the Internal Combustion Engine The Macmillan Press Ltd. 1982
- Baruah P.C. A Simulation Model for Transient Operation of Spark-Ignition Engines SAE Paper No. 900682 1990
- Marzouk M. Watson N. Load Acceptance of Turbocharged Diesel Engines IMechE C54/78 1978