This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Performance Improvement of a Multi-Cylinder CR Diesel Engine for Mini-Car Application
ISSN: 0148-7191, e-ISSN: 2688-3627
Published September 28, 2010 by SAE International in United States
Annotation ability available
The present work investigates a multi-cylinder Diesel engine with integrated automatic transmission and gearbox, equipped with a common rail injection system for mini-car sector application.
Previous research work has been devoted to examine the engine NVH characteristics; the attention has been addressed to the analysis of the direct relationship existing between in-cylinder pressure and engine block vibration signals with the final purpose of developing and setting up a methodology able to monitor and optimize the combustion process by means of non-intrusive measurements.
The aim of this paper is to improve the performance of the engine in different operating conditions by means of both experimental and numerical approaches.
Experimental tests have been conducted on the engine in a dynamic test bed in order to account for the actual loading conditions. In-cylinder pressure has been measured, intake and exhaust pressure and temperature signals have been acquired and the exhaust emissions have been measured.
Concerning the numerical approach, the model of the complete engine system has been realized within the AVL BOOST software environment, in which lumped parameter and one-dimensional models are employed for the prediction of the thermo-fluid-dynamic processes involved in the intake-exhaust systems and in the cylinders.
On the basis of the predicted and validated thermo-fluid-dynamic traces, the effects of variations of both intake and exhaust systems geometry as regards the engine standard configuration have been investigated. Results of the optimized configuration of the engine system are presented and discussed.
CitationChiavola, O., "Performance Improvement of a Multi-Cylinder CR Diesel Engine for Mini-Car Application," SAE Technical Paper 2010-32-0113, 2010, https://doi.org/10.4271/2010-32-0113.
- Čaika, V. Sampl, P. Tatschl, R. Krammer, J. Greif, D. “Coupled 1D-3D Simulation of Common Rail Injector Flow Using AVL HYDSIM and FIRE,” SAE Technical Paper 2009-24-0029 2009 10.4271/2009-24-0029
- Chiatti, G. Chiavola, O. Multi-code prediction of the influence of the exhaust system on the performance of turbocharged engine 2002 J. of Engineering for Gas Turbine and Power 124 3
- Atzler, F. Kastner, O. Rotondi, R. Weigand, A. “Multiple Injection and Rate Shaping, Part 2: Emission Reduction in Passenger Car Diesel Engines Computational Investigation,” SAE Technical Paper 2009-24-0012 2009 10.4271/2009-24-0012
- Arnone, L. Boni, M. Manelli, S. Chiavola, O. Conforto, S. Recco, E. “Block Vibration Measurements for Combustion Diagnosis in Multi-Cylinder Common Rail Diesel Engine,” SAE Technical Paper 2009-01-0646 2009 10.4271/2009-01-0646
- Arnone, L. Manelli, S. Chiatti, G. Chiavola, O. “Engine Block Vibration Measures for Time Detection of Diesel Combustion Phases,” SAE Technical Paper 2009-24-0035 2009 10.4271/2009-24-0035
- Arnone, L. Manelli, S. Chiatti, G. Chiavola, O. “Combustion Characterization in Diesel Engine via Block Vibration Analysis,” SAE Technical Paper 2010-01-0168 2010 10.4271/2010-01-0168
- AVL List GMBH BOOST v 5.0 user manual