This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Digital Shaping and Optimization of Fuel Injection Pattern for a Common Rail Automotive Diesel Engine through Numerical Simulation
Technical Paper
2017-24-0025
ISSN: 0148-7191, e-ISSN: 2688-3627
This content contains downloadable datasets
Annotation ability available
Sector:
Language:
English
Abstract
Development trends in modern Common Rail Fuel Injection System (FIS) show dramatically increasing capabilities in terms of optimization of the fuel injection pattern through a constantly increasing number of injection events per engine cycle along with a modulation and shaping of the injection rate. In order to fully exploit the potential of the abovementioned fuel injection pattern optimization, numerical simulation can play a fundamental role by allowing the creation of a kind of a virtual injection rate generator for the assessment of the corresponding engine outputs in terms of combustion characteristics such as burn rate, emission formation and combustion noise (CN). This paper is focused on the analysis of the effects of digitalization of pilot events in the injection pattern on Brake Specific Fuel Consumption (BSFC), CN and emissions for a EURO 6 passenger car 4-cylinder diesel engine. The numerical evaluation was performed considering steady-state conditions for 3 key points representative of typical operating conditions in the low-medium load range. The optimization process was carried out through numerical simulation, by means of a suitable target function aiming to minimize BSFC and CN while not exceeding the target NOx emissions level. By means of a previously developed fuel injection system model, possible different injection patterns with high number of pilot injections were evaluated thus obtaining a kind of virtual injection rate generator, the outcomes of which were then used as input for a DIPulse combustion model in order to predict BSFC, combustion noise and emissions. Through numerical optimization of pilot injection pattern digitalization, potential for achieving significant reductions in BSFC and CN for low load engine points while not exceeding the target NOx emissions level, was demonstrated.
Authors
Topic
Citation
Sapio, F., Piano, A., Millo, F., and Pesce, F., "Digital Shaping and Optimization of Fuel Injection Pattern for a Common Rail Automotive Diesel Engine through Numerical Simulation," SAE Technical Paper 2017-24-0025, 2017, https://doi.org/10.4271/2017-24-0025.Data Sets - Support Documents
Title | Description | Download |
---|---|---|
Unnamed Dataset 1 | ||
Unnamed Dataset 2 | ||
Unnamed Dataset 3 | ||
Unnamed Dataset 4 |
Also In
References
- Bosch , R. Automotive Handbook Robert Bosch GmbH Postfach(Plochngen) Germany 2004
- Lakshminarayanan , P. and Aghav , Y.V. Modelling Diesel Combustion Mech. Eng. Ser. 1980 59 78 2010 10.1007/978-90-481-3885-2
- Heywood , J.B. Internal Combustion Engine Fundementals New York McGraw-Hill 1988
- Krieger , K. , Hummel , H. , and Naik , L. Diesel Fuel Injection Technology - An essential contribution towards an environment friendly powerful diesel engine SAE Technical Paper 2000-01-1429 2000 10.4271/2000-01-1429
- Stiesch , G. Modelling Engine Spray and Combustion Processes Berlin Springer-Verlag Berlin Heidelberg 2003 10.1007/978-3-662-08790-9
- Catania , A.E. , Finesso , R. , and Spessa , E. Predictive zero-dimensional combustion model for di diesel engine feed-forward control Energy Convers. Manag. 52 10 3159 3175 2011 10.1016/j.enconman.2011.05.003
- Arrègle , J. , López , J.J. , García , J.M. , and Fenollosa , C. Development of a zero-dimensional Diesel combustion model: Part 2: Analysis of the transient initial and final diffusion combustion phases Appl. Therm. Eng. 23 11 1319 1331 2003 10.1016/S1359-4311(03)00080-2
- Payri , F. , Olmeda , P. , Martín , J. , and García , A. A complete 0D thermodynamic predictive model for direct injection diesel engines Appl. Energy 88 12 4632 4641 2011 10.1016/j.apenergy.2011.06.005
- Piano , A. , Millo , F. , Boccardo , G. , Rafigh , M. et al. Assessment of the Predictive Capabilities of a Combustion Model for a Modern Common Rail Automotive Diesel Engine SAE Technical Paper 2016-01-0547 2016 10.4271/2016-01-0547
- Minami , T. , Takeuchi , K. , and Shimazaki , N. Reduction of Diesel Engine NOx Using Pilot Injection SAE Technical Paper 950611 1995 10.4271/950611
- Zhang , L. A Study of Pilot Injection in a DI Diesel Engine SAE Technical Paper 1999-01-3493 1999 10.4271/1999-01-3493
- Schommers , J. , Duvinage , F. , Stotz , M. , Peters , A. et al. Potential of Common Rail Injection System for Passenger Car DI Diesel Engines SAE Technical Paper 2000-01-0944 2000 10.4271/2000-01-0944
- Badami , M. , Mallamo , F. , Millo , F. , and Rossi , E. Influence of Multiple Injection Strategies on Emissions, Combustion Noise and BSFC of a DI Common Rail Diesel Engine SAE Technical Paper 2002-01-0503 2002 10.4271/2002-01-0503
- Mallamo , F. , Badami , M. , and Millo , F. Analysis of Multiple Injection Strategies for the Reduction of Emissions, Noise and BSFC of a DI CR Small Displacement Non-Road Diesel Engine SAE Technical Paper 2002-01-2672 2002 10.4271/2002-01-2672
- Piano , A. , Millo , F. , Postrioti , L. , Biscontini , G. et al. Numerical and Experimental Assessment of a Solenoid Common-Rail Injector Operation with Advanced Injection Strategies SAE Int. J. Engines 9 1 565 575 2016 10.4271/2016-01-0563
- GT-SUITE Fuel Injection Applications Manual 2017
- GT-SUITE Engine Performance Application Manual 2017
- GT-SUITE Optimization Manual 2017
- GT-SUITE Acoustic Apllications Manual 2017
- AVL Operative Instructions AVL 4500 Combustion Noise Meter 1986
- AVL Noise and Vibrations Training Program 1986
- Emery , F. and Nenarokomov , A.V Optimal experiment design Meas. Sci. Technol. 9 864 876 1998 10.1088/0957-0233/9/6/003
- Han , Z. , Uludogan , A. , Hampson , G. , and Reitz , R. Mechanism of Soot and NOx Emission Reduction Using Multiple-injection in a Diesel Engine SAE Technical Paper 960633 1996 10.4271/960633