Combustion and Emission Characteristics of a PCI Engine Fueled with Ethanol-Diesel Blends

Masuda, Yutaka; Chen, Zhili

doi:10.4271/2009-01-1854

Cited by 14 publications

(4 citation statements)

References 14 publications

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“…Consequently, the combustion temperature also decreased with a decrease in NO x emission. 26,27 On the other hand, in the analysis of the IS-unit emission, regardless of fuel type, the ISNO x emissions of the test fuels showed very similar values at each engine load. This is why the IS-unit denotes exhaust emissions per unit power.…”

Section: Resultsmentioning

confidence: 88%

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Effect of Bioethanol Blended Diesel Fuel and Engine Load on Spray, Combustion, and Emissions Characteristics in a Compression Ignition Engine

et al. 2012

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This study investigates the effect of engine load condition on the injection spray, combustion, and exhaust emissions characteristics of a diesel–bioethanol blended fuel diesel engine. In this study, the injection characteristics, such as the effective flow diameter and the effective flow velocity, were calculated from the nozzle flow model. The macroscopic spray characteristics of diesel–bioethanol fuels were measured and analyzed using a spray visualization system. Using a four-cylinder test engine with 1.5 L of displacement, the combustion pressure, heat release, and emission characteristics were measured and analyzed. In addition, properties of blended fuel were measured and analyzed. This study revealed that the physical properties (density, viscosity, and surface tension) and chemical properties (cetane number, heating value, and distillation) of diesel–bioethanol blended fuels generally decreased with increased bioethanol content. The increase in bioethanol fuel resulted in easy vaporization at the same temperature condition. After energizing, the increase of engine load caused an increase in spray tip penetration. The spray cone angle was mainly affected by the blending of bioethanol, not the engine load. The increase of engine load led to a decrease of ignition delay by the high gas temperature, and it also caused an increase in the combustion duration for the same fuel amount. In the exhaust emissions, the increase of engine load affected the increase in both the NO x and ISNO x emissions, the decrease of CO and HC emissions. At a high engine load, CO and HC emissions were quite similar in D100, DE10, and DE20 fuels due to the increased oxygen content.

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Section: Resultsmentioning

confidence: 88%

“…In addition, the spray cone angle widened, and the PM emissions were reduced by about 20%. Excluding the afore-mentioned investigations, there have been many studies on the reduction of exhaust emissions and the mixing stability of diesel–ethanol blended fuels. − …”

Section: Introductionmentioning

confidence: 99%

Effect of Bioethanol Blended Diesel Fuel and Engine Load on Spray, Combustion, and Emissions Characteristics in a Compression Ignition Engine

et al. 2012

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“…Regarding bioethanol fuel as a kind of renewable fuel, there have been many studies that applied diesel-ethanol blends to the CI engine [12][13][14]. Although bioethanol has a weak soot tendency which can be an advantage, the use of bioethanol blended diesel fuel also has limitations, such as a lower lubricity, a lower viscosity, a reduced cetane number, and a lower miscibility [14,15].…”

Section: Introductionmentioning

confidence: 99%

A study of the effects of diesel–biodiesel–bioethanol fuels on emission reduction in a compression ignition engine

Lee

Roh

Park

et al. 2011

Proceedings of the Institution of Mechanical Engineers, Part D:

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This study describes the effects of diesel–biodiesel–bioethanol blending fuels on the combustion and emission characteristics of a compression ignition engine. The experiments were investigated for various blending ratios and various fuel injection parameters. In this study, biodiesel fuel was blended not only to prevent phase separation between bioethanol and diesel but also to compensate for the low viscosity of bioethanol. The bioethanol blending ratio is restricted up to 30 vol. % to maintain the ignition characteristics. The results showed that the ignition delay was extended and that the fuel consumption and the maximum rate of pressure rise deteriorated with increasing bioethanol blending ratio. In addition, the diesel–biodiesel–bioethanol fuel reduced the indicated specific soot emissions. As the bioethanol blending ratio is increased, the indicated specific carbon monoxide (CO), the indicated specific unburned hydrocarbon, and the indicated specific nitrogen oxide emissions increased slightly.

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“…Oxygenated fuels are known to reduce particulate matter for motor vehicles and have been evaluated as potential sources of renewable fuels. Among the alternative fuels, biodiesel and ethanol have been proposed as alternatives for internal combustion engines. − In particular, biodiesel has received wide attention as a replacement for diesel fuel because it is biodegradable, is nontoxic, and can reduce overall life cycle emission of carbon dioxide (CO 2 ) from the engine . The high oxygen content in biodiesel results in the improvement of its burning efficiency, as well as the reduction of particulate matter (PM), carbon monoxide (CO), and hydrocarbon (HC), but at the same time produces larger nitrogen oxides (NOx).…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies of a Naturally Aspirated, DI Diesel Engine Fuelled with Ethanol−Biodiesel−Water Microemulsions

Qi¹,

Chen²,

Lee³

et al. 2010

Energy Fuels

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The main objective of this paper is to study the performance, emissions, and combustion characteristics of the diesel engine using ethanol-biodiesel-water microemulsions. The results indicated that although the microemulsions exhibited similar combustion stages to that of biodiesel, some differences were observed between biodiesel and microemulsions. Biodiesel showed an earlier start of combustion at all engine operating conditions, while the ignition delays of the microemulsions were longer. The peak cylinder pressures of the microemulsions were lower at low engine loads, and almost similar to that of biodiesel at medium and high engine loads. The peaks of heat release rate of the microemulsions were almost similar to that of biodiesel at low engine loads, but slightly higher at medium and high engine loads. The combustion durations of the microemulsions were longer at low engine loads and speed, but shorter at medium and high engine loads. For the microemulsions, there were slightly higher brake specific fuel consumptions (BSFC), while lower brake specific energy consumptions (BSEC). Drastic reduction in smoke was observed with the microemulsions at high engine loads. Nitrogen oxides (NOx) emissions were found slightly lower under almost all engine operating conditions for the microemulsions.

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Combustion and Emission Characteristics of a PCI Engine Fueled with Ethanol-Diesel Blends

Cited by 14 publications

References 14 publications

Effect of Bioethanol Blended Diesel Fuel and Engine Load on Spray, Combustion, and Emissions Characteristics in a Compression Ignition Engine

Effect of Bioethanol Blended Diesel Fuel and Engine Load on Spray, Combustion, and Emissions Characteristics in a Compression Ignition Engine

A study of the effects of diesel–biodiesel–bioethanol fuels on emission reduction in a compression ignition engine

Experimental Studies of a Naturally Aspirated, DI Diesel Engine Fuelled with Ethanol−Biodiesel−Water Microemulsions

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