NDLI: Evaporation and mixture formation of gasoline–ethanol sprays in spark ignition engines with pre-blended injection and dual injection: a comparative study

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Evaporation and mixture formation of gasoline–ethanol sprays in spark ignition engines with pre-blended injection and dual injection: a comparative study

Content Provider	IET Digital Library
Author	Ga, Bui Van Nam, Tran Van Trung, Nguyen Quang Tien, Huynh Tan
Abstract	Evaporation of sprays and mixture formation as injection of pre-blended gasoline–ethanol mixture and as separate injection of the fuels are investigated by means of numerical simulation. Effects of operating conditions and different configurations of injection systems have been examined. Under the same operating conditions, pure gasoline mostly evaporated during the injection period, while pure ethanol evaporated mainly during the compression process. Charge temperature in the cylinder for pure ethanol is ∼60°C lower than that for pure gasoline at the end of the compression process. Independently from injection system, the dual injection results in a higher evaporation rate compared to pre-blended injection. Whether pre-blended injection or dual injection is employed, the evaporation rate is improved for port injection (PI) compared to direct injection (DI). Besides, vapour concentration at the end of the compression process of PI increases with a shift from a single-inlet manifold to double-inlet manifolds. Mixture homogeneity is enhanced with increasing ambience temperature or/and an increasing engine speed with pre-blended injection, while a strong stratified charge mixture is achieved with dual injection using double-inlet manifolds or with DI of ethanol combined with PI of gasoline.
Starting Page	539
Ending Page	548
Page Count	10
ISSN	17521416
Volume Number	13
e-ISSN	17521424
Issue Number	Issue 4, Mar (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-rpg/13/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5106
Journal	IET Renewable Power Generation
Publisher Date	2018-12-10
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Compression Process Double-inlet Manifolds Dual Injection System Engines Evaporation Evaporation Rate Fuel System Heat And Thermodynamic Processes Ignition Industrial Processes Internal Combustion Engines Mechanical Component Mechanical Engineering Mixture Formation Numerical Analysis Numerical Simulation Organic Compound Petroleum Port Injection Preblended Gasoline–ethanol Mixture Pure Gasoline Separate Injection System Separation Single-inlet Manifold Spark Ignition Engine Sprays Vapour Concentration
Content Type	Text
Resource Type	Article
Subject	Renewable Energy, Sustainability and the Environment

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