This paper uses detailed computational fluid dynamics (CFD) modeling with the kiva-chemkin code to investigate the influence of injection timing, combustion phasing, and operating conditions on combustion instability. Using detailed CFD simulations, a large design of experiments (DOE) is performed with small perturbations in the intake and fueling conditions. A response surface model (RSM) is then fit to the DOE results to predict cycle-to-cycle combustion instability. Injection timing had significant tradeoffs between engine efficiency, emissions, and combustion instability. Near top dead center (TDC) injection timing can significantly reduce combustion instability, but the emissions and efficiency drop close to conventional diesel combustion levels. The fuel split between the two direct injection (DI) injections has very little effect on combustion instability. Increasing exhaust gas recirculation (EGR) rate, while making adjustments to maintain combustion phasing, can significantly reduce peak pressure rise rate (PPRR) variation until the engine is on the verge of misfiring. Combustion phasing has a very large impact on combustion instability. More advanced phasing is much more stable, but produces high PPRRs, higher NOx levels, and can be less efficient due to increased heat transfer losses. The results of this study identify operating parameters that can significantly improve the combustion stability of dual-fuel reactivity-controlled compression ignition (RCCI) engines.
Skip Nav Destination
Article navigation
January 2016
Research-Article
Investigation of the Effect of Injection and Control Strategies on Combustion Instability in Reactivity-Controlled Compression Ignition Engines
Sage L. Kokjohn
Sage L. Kokjohn
Search for other works by this author on:
David T. Klos
Sage L. Kokjohn
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received May 19, 2015; final manuscript received July 28, 2015; published online August 18, 2015. Editor: David Wisler.
J. Eng. Gas Turbines Power. Jan 2016, 138(1): 011502 (9 pages)
Published Online: August 18, 2015
Article history
Received:
May 19, 2015
Revised:
July 28, 2015
Citation
Klos, D. T., and Kokjohn, S. L. (August 18, 2015). "Investigation of the Effect of Injection and Control Strategies on Combustion Instability in Reactivity-Controlled Compression Ignition Engines." ASME. J. Eng. Gas Turbines Power. January 2016; 138(1): 011502. https://doi.org/10.1115/1.4031179
Download citation file:
Get Email Alerts
Investigation of Grooved Front Plate for Inlet Swirl Reduction in Brush Seals
J. Eng. Gas Turbines Power
In-Cylinder Imaging and Emissions Measurements of Cold-Start Split Injection Strategies
J. Eng. Gas Turbines Power (August 2025)
Related Articles
Three-Dimensional Computational Fluid Dynamics Simulation and Mesh Size Effect of the Conversion of a Heavy-Duty Diesel Engine to Spark-Ignition Natural Gas Engine
J. Eng. Gas Turbines Power (June,2022)
Methanol Operation in Heavy-Duty DICI Dual-Fuel Engines: Investigating Charge Cooling Effects Using ECN Spray D Data
J. Eng. Gas Turbines Power (January,0001)
Investigation of Biodiesel Combustion and Emissions Using Reduced Chemical Kinetics
J. Eng. Gas Turbines Power (June,2018)
High-Performance Computing and Analysis-Led Development of High Efficiency Dilute Opposed Piston Gasoline Engine
J. Eng. Gas Turbines Power (October,2018)
Related Proceedings Papers
Related Chapters
Physiology of Human Power Generation
Design of Human Powered Vehicles
Determination of the Effects of Safflower Biodiesel and Its Blends with Diesel Fuel on Engine Performance and Emissions in a Single Cylinder Diesel Engine
International Conference on Software Technology and Engineering, 3rd (ICSTE 2011)
Numerical Modeling of N O x Emission in Turbulant Spray Flames Using Thermal and Fuel Models
International Conference on Mechanical and Electrical Technology, 3rd, (ICMET-China 2011), Volumes 1–3