This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Modeling of Variable Valve Timing on High Performance Engine using Power-Oriented Graphs Method
Technical Paper
2011-24-0150
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
Engine efficiency is one of the key aspects to reduce CO2 emissions. In order to improve the emission maintaining high performance capabilities several devices are introduced in the system; variable valve timing technology allows more flexibility for modern engines to meet peak performance, fuel economy and low emissions targets [7] while providing good driveability. This paper describes the Lamborghini continuously-variable cam phaser model using a graphical technique, called Power Oriented Graphs (POG), this uses an energetic approach for representing the physical systems. The generally accepted approach is to calibrate an engine on a dynamometer and to adjust the operation of the engine to meet performance targets. With the current build and test approach, these adjustments may not be made until well into the development program, and this calibration is a costly and time consuming step in the engine development process: the main purpose of this works is showing how was described the model in order to get more easy and fast the calibrating operations. Furthermore the usefulness to model the system consists of analyzing in simulation many more system configurations than those available for real experiments so it's important using a simple methodology that is able to analyze the whole system's dynamic in order to reach the performance expectations. The results obtained were validated demonstrating the effectiveness of the POG technique.
Recommended Content
Authors
Citation
Corvino, C., Calabretta, M., and Zanasi, R., "Modeling of Variable Valve Timing on High Performance Engine using Power-Oriented Graphs Method," SAE Technical Paper 2011-24-0150, 2011, https://doi.org/10.4271/2011-24-0150.Also In
References
- Astarita, M. Caraceni, A. Cioffi, V. Riegel, A. Sepe, E. Vetrano, A. Siebke, P. “Virtual Testing and Design of Experiments for Functional Validation of Cam Phaser Control,” SAE Technical Paper 2004-01-0785 2004 10.4271/2004-01-0785
- Pohl, J. Sethson, M. Krus, P. Palmberg, J. “ Modeling and simulation of Fast 2/2 Switching Valve ”
- Calabretta, M. Cacciatore, D. Carden, P. “Valvetrain Friction - Modeling, Analysis and Measurement of a High Performance Engine Valvetrain System,” SAE Int. J. Engines 3 2 72 84 2010 10.4271/2010-01-1492
- Zanasi, R. “ The Power Oriented Graph: Basic Propierties Technicla Report DEIS-LAR-17-96 Univeristy of Bologna May 1996
- Zanasi, R. “ Power Oriented Modeling of Dynamical System for Simulation IMACS Symp. On Modeling and Control of Technological System Lille, France May 1992
- Pourkhesalian, A. M. Shamekhi, A. H. Salimi, F. “NOx Control Using Variable Exhaust Valve Timing and Duration,” SAE Technical Paper 2010-01-1204 2010 10.4271/2010-01-1204
- Pischinger, Martin Salber, Wolfgang van der Staay, Frank Baumgarten, Henning Kemper, Hans Fuel Consumption and Low Emissions Seoul 2000 FISITA World Automotive Congress F2000A005