Investigation of Gasoline Compression Ignition in a Heavy-Duty Diesel Engine Using Computational Fluid Dynamics
- 6 April 2021
- conference paper
- conference paper
- Published by SAE International in SAE International Journal of Advances and Current Practices in Mobility
Abstract
A computational fluid dynamics (CFD) model was developed to explore gasoline compression ignition (GCI) combustion. Results were validated with single-cylinder engine (SCE) experiments. It was shown that the CFD model captured experimental results well. Cylinder pressure, heat release and emissions from the CFD model were also used to analyze the performance of GCI combustion with a current heavy-duty diesel engine platform. This work also provides detailed analysis on in-cylinder combustion and emissions using CFD. It was found that multiple injection strategy can deliver desirable fuel stratification profile that benefits both engine and emissions performance. A wave contoured piston was compared with a stepped-lip type piston for both GCI and Diesel combustion scenarios on the same engine platform. Stepped-lip pistons offer an opportunity to use multiple injection strategies to overcome high UHC emissions of GCI combustion when compared to wave pistons. On the other hand, wave pistons, offer more mixing enhanced combustion in traditional diesel combustion systems. Emphasis on these different combustion concepts show that simultaneous optimization of engine and fuel property could really overcome the efficiency and emissions trade-off that conventional diesel combustion performance has been known for.This publication has 31 references indexed in Scilit:
- Ignition and formaldehyde formation in dimethyl ether (DME) reacting spray under various EGR levelsProceedings of the Combustion Institute, 2017
- Simultaneous Schlieren–PLIF Studies for Ignition and Soot Luminosity Visualization With Close-Coupled High-Pressure Double Injections of n-DodecaneJournal of Energy Resources Technology, 2017
- Effects of injection parameters, boost, and swirl ratio on gasoline compression ignition operation at idle and low-load conditionsInternational Journal of Engine Research, 2016
- A perspective on the range of gasoline compression ignition combustion strategies for high engine efficiency and low NOx and soot emissions: Effects of in-cylinder fuel stratificationInternational Journal of Engine Research, 2016
- Computational Fluid Dynamics Simulation of Gasoline Compression IgnitionJournal of Energy Resources Technology, 2015
- Achieving Stable Engine Operation of Gasoline Compression Ignition Using 87 AKI Gasoline Down to IdleSAE International Journal of Advances and Current Practices in Mobility, 2015
- An optical study on liquid-phase penetration, flame lift-off location and soot volume fraction distribution of gasoline–diesel blends in a constant volume vesselFuel, 2015
- Enhancement on a Skeletal Kinetic Model for Primary Reference Fuel Oxidation by Using a Semidecoupling MethodologyEnergy & Fuels, 2012
- An Experimental Investigation of Low-Octane Gasoline in Diesel EnginesJournal of Engineering for Gas Turbines and Power, 2011
- Numerical Parametric Study of Diesel Engine Operation with GasolineCombustion Science and Technology, 2009