Modeling and control of fuel distribution in a dual-fuel internal combustion engine leveraging late intake valve closings
Abstract
In internal combustion engines, cycle-to-cycle and cylinder-to-cylinder variations of the combustion process have been shown to negatively impact the fuel efficiency of the engine and lead to higher exhaust emissions. The combustion variations are generally tied to differences in the composition and condition of the trapped mass throughout each cycle and across individual cylinders. Thus, advanced engines featuring exhaust gas recirculation, flexible valve actuation systems, advanced fueling strategies, and turbocharging systems are prone to exhibit higher variations in the combustion process. In this study, the cylinder-to-cylinder variations of the combustion process in a dual-fuel internal combustion engine leveraging late intake valve closing are investigated and a model to predict and address one of the root causes for these variations across cylinders is developed. The study is conducted on an inline six-cylinder heavy-duty dual-fuel engine equipped with exhaust gas recirculation, a variable geometry turbocharger, and a fully flexible variable intake valve actuation system. The engine is operated with late intake valve closure timings in a dual-fuel combustion mode in which a high reactivity fuel is directly injected into the cylinders and a low reactivity fuel is port injected into the cylinders. The cylinder-to-cylinder variations observed in the study have been associatedmore »
- Authors:
-
- Mechanical, Materials, and Aerospace Engineering Department, Illinois Institute of Technology, Chicago, IL, USA
- Fuels, Engine and Aftertreatment Research, Argonne National Laboratory, Argonne, IL, USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1437693
- Grant/Contract Number:
- EE0003303
- Resource Type:
- Published Article
- Journal Name:
- International Journal of Engine Research
- Additional Journal Information:
- Journal Name: International Journal of Engine Research Journal Volume: 18 Journal Issue: 8; Journal ID: ISSN 1468-0874
- Publisher:
- SAGE Publications
- Country of Publication:
- United Kingdom
- Language:
- English
Citation Formats
Kassa, Mateos, Hall, Carrie, Ickes, Andrew, and Wallner, Thomas. Modeling and control of fuel distribution in a dual-fuel internal combustion engine leveraging late intake valve closings. United Kingdom: N. p., 2016.
Web. doi:10.1177/1468087416674426.
Kassa, Mateos, Hall, Carrie, Ickes, Andrew, & Wallner, Thomas. Modeling and control of fuel distribution in a dual-fuel internal combustion engine leveraging late intake valve closings. United Kingdom. https://doi.org/10.1177/1468087416674426
Kassa, Mateos, Hall, Carrie, Ickes, Andrew, and Wallner, Thomas. Mon .
"Modeling and control of fuel distribution in a dual-fuel internal combustion engine leveraging late intake valve closings". United Kingdom. https://doi.org/10.1177/1468087416674426.
@article{osti_1437693,
title = {Modeling and control of fuel distribution in a dual-fuel internal combustion engine leveraging late intake valve closings},
author = {Kassa, Mateos and Hall, Carrie and Ickes, Andrew and Wallner, Thomas},
abstractNote = {In internal combustion engines, cycle-to-cycle and cylinder-to-cylinder variations of the combustion process have been shown to negatively impact the fuel efficiency of the engine and lead to higher exhaust emissions. The combustion variations are generally tied to differences in the composition and condition of the trapped mass throughout each cycle and across individual cylinders. Thus, advanced engines featuring exhaust gas recirculation, flexible valve actuation systems, advanced fueling strategies, and turbocharging systems are prone to exhibit higher variations in the combustion process. In this study, the cylinder-to-cylinder variations of the combustion process in a dual-fuel internal combustion engine leveraging late intake valve closing are investigated and a model to predict and address one of the root causes for these variations across cylinders is developed. The study is conducted on an inline six-cylinder heavy-duty dual-fuel engine equipped with exhaust gas recirculation, a variable geometry turbocharger, and a fully flexible variable intake valve actuation system. The engine is operated with late intake valve closure timings in a dual-fuel combustion mode in which a high reactivity fuel is directly injected into the cylinders and a low reactivity fuel is port injected into the cylinders. The cylinder-to-cylinder variations observed in the study have been associated with the maldistribution of the port-injected fuel, which is exacerbated at late intake valve timings. The resulting difference in indicated mean effective pressure between the cylinders ranges from 9% at an intake valve closing of 570° after top dead center to 38% at an intake valve closing of 620° after top dead center and indicates an increasingly uneven fuel distribution. The study leverages both experimental and simulation studies to investigate the distribution of the port-injected fuel and its impact on cylinder-to-cylinder variation. The effects of intake valve closing as well as the impact of intake runner length on fuel distribution were quantitatively analyzed, and a model was developed that can be used to accurately predict the fuel distribution of the port-injected fuel at different operating conditions with an average estimation error of 1.5% in cylinder-specific fuel flow. A model-based control strategy is implemented to adjust the fueling at each port and shown to significantly reduce the cylinder-to-cylinder variations in fuel distribution.},
doi = {10.1177/1468087416674426},
journal = {International Journal of Engine Research},
number = 8,
volume = 18,
place = {United Kingdom},
year = {Mon Oct 24 00:00:00 EDT 2016},
month = {Mon Oct 24 00:00:00 EDT 2016}
}
https://doi.org/10.1177/1468087416674426
Web of Science
Works referenced in this record:
Experiments and Modeling of Dual-Fuel HCCI and PCCI Combustion Using In-Cylinder Fuel Blending
journal, October 2009
- Kokjohn, Sage L.; Hanson, Reed M.; Splitter, Derek A.
- SAE International Journal of Engines, Vol. 2, Issue 2, p. 24-39
The effect of injection timing and intake valve close timing on performance and emissions of diesel PCCI engine with a full engine cycle CFD simulation
journal, September 2011
- Jia, Ming; Xie, Maozhao; Wang, Tianyou
- Applied Energy, Vol. 88, Issue 9
Development of Dual-Fuel Low Temperature Combustion Strategy in a Multi-Cylinder Heavy-Duty Compression Ignition Engine Using Conventional and Alternative Fuels
journal, May 2013
- Zhang, Yu; Sagalovich, Ilya; De Ojeda, William
- SAE International Journal of Engines, Vol. 6, Issue 3
Combustion and exhaust emission characteristics of a dual fuel compression ignition engine operated with pilot Diesel fuel and natural gas
journal, November 2004
- Papagiannakis, R. G.; Hountalas, D. T.
- Energy Conversion and Management, Vol. 45, Issue 18-19
Cylinder-to-Cylinder Variations in Power Production in a Dual Fuel Internal Combustion Engine Leveraging Late Intake Valve Closings
journal, April 2016
- Kassa, Mateos; Hall, Carrie; Ickes, Andrew
- SAE International Journal of Engines, Vol. 9, Issue 2
Combustion and Exhaust Emissions in a Direct-injection Diesel Engine Dual-Fueled with Natural Gas
conference, February 1995
- Daisho, Yasuhiro; Yaeo, Toru; Koseki, Takahisa
- International Congress & Exposition, SAE Technical Paper Series
Performance and Emissions of a Heavy-Duty Truck during the UDDS Driving Cycle: Simulation Analysis
journal, June 2016
- Giakoumis, Evangelos G.; Alysandratou, Anastasia
- Journal of Energy Engineering, Vol. 142, Issue 2
Combustion in Gas Fueled Compression: Ignition Engines of the Dual Fuel Type
journal, July 2003
- Karim, G. A.
- Journal of Engineering for Gas Turbines and Power, Vol. 125, Issue 3
An Experimental Investigation of Fuel Reactivity Controlled PCCI Combustion in a Heavy-Duty Engine
journal, April 2010
- Hanson, Reed M.; Kokjohn, Sage L.; Splitter, Derek A.
- SAE International Journal of Engines, Vol. 3, Issue 1, p. 700-716
Heavy-Duty Truck Emissions in the South Coast Air Basin of California
journal, August 2013
- Bishop, Gary A.; Schuchmann, Brent G.; Stedman, Donald H.
- Environmental Science & Technology, Vol. 47, Issue 16
Impact of Cetane Number on Combustion of a Gasoline-Diesel Dual-Fuel Heavy-Duty Multi-Cylinder Engine
journal, April 2014
- Ickes, Andrew; Wallner, Thomas; Zhang, Yu
- SAE International Journal of Engines, Vol. 7, Issue 2
Comparison of Life Cycle Greenhouse Gases from Natural Gas Pathways for Medium and Heavy-Duty Vehicles
journal, May 2015
- Tong, Fan; Jaramillo, Paulina; Azevedo, Inês M. L.
- Environmental Science & Technology, Vol. 49, Issue 12
Study of fuel economy improvement through control of intake valve closing timing: cause of combustion deterioration and improvement
journal, January 1995
- Nagumo, S.
- JSAE Review, Vol. 16, Issue 1