Combustion and Emission Characteristics of Direct Injection Compression Ignition Engine Fueled with Wide Distillation Fuel(WDF)

Wang, Jianxin; Liu, Haoye; Wang, Zhi; Shuai, Shijin

doi:10.1016/j.egypro.2015.07.174

Cited by 11 publications

(7 citation statements)

References 13 publications

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“…Cetane number of PODE can be calculated using the formulas in ref . In previous studies, the optimal choices for diesel/gasoline blends and diesel/gasoline/PODE blends are 50:50 (Fuel 1) and 35:35:30 (Fuel 2) by volume, respectively. Therefore, these two fuel blends were selected as the baseline fuel for this study and the effect of ethanol content on gasoline was investigated.…”

Section: Fuel Preparation and Experimental Setupmentioning

confidence: 99%

“…Nowadays, more and more researchers are focusing on how to improve the emissions and combustion characteristics of diesel engines due to increasingly stringent emission regulations. Low soot emissions can be found by many researchers without affecting the thermal efficiency using diesel/gasoline fuel blends with advanced combustion mode. − …”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Study on Autoignition Characteristics of the Gasoline/Diesel/Ethanol and Gasoline/Diesel/PODE/Ethanol Fuels

Yoo

Wang

et al. 2019

Energy Fuels

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Polyoxymethylene dimethyl ethers (PODE) with high oxygen content and ethanol with high octane number are ideal additives for diesel and gasoline, respectively. Previous studies have shown that diesel/gasoline fuels and diesel/gasoline/PODE fuels can significantly reduce soot emissions. To further reduce soot emissions, ethanol was blended with these two fuels in this study and the effect of ethanol on fuel ignitability was investigated by experimental study and numerical simulation. Experiments were conducted in a cooperative fuel research engine and a cetane ignition delay instrument under various temperature and exhaust gas recirculation ratio. Results show that the effect of ethanol on chemical ignition delay is higher than that on physical ignition delay. With the addition of ethanol, the combustion phasing is retarded and the maximum apparent heat release rate of both low-temperature heat release and high-temperature heat release become lower. At the same time, an increase in the critical compression ratio (CCR) is observed with the addition of ethanol, while improving ignitability can be observed with the addition of PODE. It is worth noting that ethanol addition affects the CCR more for CCR of diesel/gasoline/PODE/fuels than that for diesel/gasoline fuels. Furthermore, kinetic simulation shows that there is an antagonism between ethanol and PODE during the decomposition process because OH is the key reactant in both ethanol and PODE decomposition.

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Section: Fuel Preparation and Experimental Setupmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental and Numerical Study on Autoignition Characteristics of the Gasoline/Diesel/Ethanol and Gasoline/Diesel/PODE/Ethanol Fuels

Yoo

Wang

et al. 2019

Energy Fuels

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“…In the previous research, 50% gasoline by volume for GDBF was selected as the optimal choice. 11 Rubber components of the engine are easier to be damaged when the blend ratio of PODE is higher than 30%. Therefore, GDP used in this study was prepared by blending 35% diesel, 35% gasoline, and 30% PODE by volume.…”

Section: Fuel Preparation and Experimental Setupmentioning

confidence: 99%

“…6 Many researchers have found that soot emissions of diesel engines can be reduced using gasoline and diesel blend fuels (GDBFs). 7–11 However, due to the low cetane number of gasoline, the ignitability of the blend fuels is lower than that of diesel. Therefore, combustion efficiency is lower when the blend fuels are used.…”

Section: Introductionmentioning

confidence: 99%

Optimization of piston bowl and valve system in compression ignition engine fueled with gasoline/diesel/polyoxymethylene dimethyl ethers for high efficiency

Liu

et al. 2019

International Journal of Engine Research

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Polyoxymethylene dimethyl ethers, with excellent volatility and oxygen content of up to 49%, have great potential to improve engine performance and emission characteristics. In this study, experiments were carried out in a single-cylinder engine fueled with gasoline/diesel/polyoxymethylene dimethyl ethers blend fuel using multiple premixed compression ignition combustion mode along with engine optimization to exploit the high-efficiency potential. The thermal efficiency was increased by 9.4 percentage points after transforming the combustion mode from conventional diesel mode to gasoline/diesel/polyoxymethylene dimethyl ethers multiple premixed compression ignition mode. A fully variable valve system and a redesigned low-heat-transfer piston were used to further improve the thermal efficiency. The low-heat-transfer piston had a 15% lower area–volume ratio compared with the original ω-type piston. By replacing the original ω-type piston with the low-heat-transfer piston, the heat transfer loss was reduced by 2.29 percentage points and thus indicated thermal efficiency could be increased by 2.37 percentage points, which was up to 50.03%. On the basis of the low-heat-transfer piston, indicated thermal efficiency could be further increased to 51.09% with the application of fully variable valve system due to the longer ignition delay and more premixed combustion. At the same time, NOX emissions could be controlled below 0.4 g/kW·h using high exhaust gas recirculation ratio, which equaled the NOX emission limit of Euro VI standard. Although soot emissions could be increased due to weak turbulence and insufficient intake charge using the low-heat-transfer piston and fully variable valve system, it was still lower than those of the original diesel engines.

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“…The first is to blend market gasoline and diesel fuels. These two fuels can be blended offline in the tank and are also referred to as wide distillation fuels [150] or "dieseline" [151,152]. Algunaibet et al found that a blend of 20% (v/v) gasoline with diesel was sufficient to reduce the flash point below 40 • C and that diesel addition below 50% (v/v) had a slight effect on the vapor pressure of gasoline [153].…”

Section: Low Octane Fuels For Gcimentioning

confidence: 99%

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Shuai

et al. 2018

Automot. Innov.

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Gasoline direct injection (GDI) engines are currently the dominant powertrains for passenger cars. With the implementation of increasingly stringent fuel consumption and emission regulations worldwide, GDI engines are facing challenges owing to high particulate matter emissions and a tendency to knock, leading to a change in the research and design (R&D) issues compared with those in the twentieth century. This paper reviews the progress in research regarding GDI engine technologies over the past 20 years, focusing on combustion system configurations, and also highlights common issues in GDI R&D, including preignition and deto-knock, soot formation and PM emissions, injector deposits and gasoline compression ignition (GCI). First, an overview of recent developments in the field as driven by regulations is provided, following which progress in injection and combustion systems is examined. Third, the review addresses the occurrence and mechanism of deto-knock and considers means of suppressing this phenomenon. The fourth section discusses soot formation mechanisms and particulate matter emission characteristics of GDI engines and describes the application of gasoline particulate filter (GPF) after-treatment. The subsequent section summarizes studies regarding injector deposit formation, as well as pioneering research into GCI combustion modes. Finally, a summary and future prospects for GDI engine technologies are provided.

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Combustion and Emission Characteristics of Direct Injection Compression Ignition Engine Fueled with Wide Distillation Fuel(WDF)

Cited by 11 publications

References 13 publications

Experimental and Numerical Study on Autoignition Characteristics of the Gasoline/Diesel/Ethanol and Gasoline/Diesel/PODE/Ethanol Fuels

Experimental and Numerical Study on Autoignition Characteristics of the Gasoline/Diesel/Ethanol and Gasoline/Diesel/PODE/Ethanol Fuels

Optimization of piston bowl and valve system in compression ignition engine fueled with gasoline/diesel/polyoxymethylene dimethyl ethers for high efficiency

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

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