A detailed investigation on the performance, combustion, and exhaust emission characteristics of a diesel engine running on the blend of diesel fuel, biodiesel and 1-heptanol (C7 alcohol) as a next-generation higher alcohol

Fuel ◽  
2020 ◽  
Vol 275 ◽  
pp. 117893 ◽  
Author(s):  
Murat Kadir Yesilyurt
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Next Generation ◽  
Higher Alcohol

Diesel Fuel Multiple Injection Effects on Emission Characteristics of Diesel Engine Mixed Ammonia Gas Into Intake Air

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Yoichi Niki ◽  
Yoshifuru Nitta ◽  
Hidenori Sekiguchi ◽  
Koichi Hirata
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Results ◽  
Exhaust Emission ◽  
N2o Emissions ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
N2o Production ◽  
Combustion Processes

This study focuses NH3 as an alternative fuel for internal combustion engines, because NH3 is known as a H2 carrier and its combustion does not produce CO2 causing global warming. On the other hand, some reports show that unburned NH3 and N2O appear in exhaust gas, when NH3 is used as fuel for compression ignition or spark ignition engines. NH3 is toxic and N2O is one of the greenhouse gases. These emissions should not be emitted. These reports point out that exhaust gas after treatments and/or injection strategies can be effective to reduce these emissions. From our previous investigations, it was confirmed that NH3 and N2O were contained in the exhaust gas of a conventional diesel engine with NH3 gas mixed into the engine intake. In this study, NH3 combustion processes in the diesel engine were investigated from the experimental results. Based on the investigations, a pilot or postinjection was conducted to reduce emissions of NH3 and N2O. In this paper, first the experimental results of the combustion and exhaust emission characteristics on the conventional diesel engine with NH3 gas mixed into the engine intake are shown. NH3 and N2O emissions are then verified by analyzing the exhaust gas. Next, NH3 combustion processes in the diesel engine are considered from the experimental results to report on the effects of a pilot and postdiesel fuel injection on NH3 and N2O production processes. The experimental results suggest that the multiple diesel fuel injections would be one of the effective measures to reduce N2O and NH3 emissions on NH3 and diesel dual-fueled engine.

APPLICATION ON OXYGENATED FUEL OF MONO-ETHER GROUP IN AN IDI DIESEL ENGINE

2012 ◽  
Vol 06 ◽  
pp. 425-430
Author(s):  
HYUNG-GON KIM ◽  
SEUNG-HUN CHOI ◽  
YOUNG-TAIG OH
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Engine Performance ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Butyl Ether ◽  
Ether Group ◽  
Oxygenated Fuel ◽  
Effect Of Oxygen ◽  
Gas Recirculation

Effect of oxygen components of fuels on exhaust emissions has been investigated by applying an indirect injection (IDI) diesel engine. This research analyzed variation and/or difference of the engine performance and exhaust emission characteristics of the IDI diesel engine by fueling the commercial diesel fuel and four different mixed ratios of oxygenated blended fuels. Effect of the exhaust gas recirculation (EGR) method was analyzed on the NOx emission characteristics. Ethylene glycol mono-n-butyl ether (EGBE) contains 27% of oxygen components in itself, and it is a kind of effective oxygenated fuel of mono-ether group. Smoke emission from the EGBE was reduced remarkably relative to the commercial diesel fuel. The EGBE can supply oxygen components sufficiently at higher diesel engine loads and speeds. It was found that a simultaneous reduction of the smoke and the NOx was achieved with the oxygenated fuel (10 vol-%) and the cooled EGR method (10%).

Exhaust Emission Characteristics of a Three-Wheeler Auto Diesel Engine Fueled with Pongamia, Mahua and Jatropha Biodiesels

2019 ◽  
Vol 13 ◽  
Author(s):  
Bobbili Prasadarao ◽  
Aditya Kolakoti ◽  
Pudi Sekhar
Keyword(s):  
Diesel Engine ◽  
Methyl Ester ◽  
Diesel Fuel ◽  
Edible Oils ◽  
Cetane Number ◽  
Alternative Fuel ◽  
Exhaust Emissions ◽  
International Standards ◽  
Exhaust Emission ◽  
Emission Characteristics

: This paper presents the production of biodiesel from three different non edible oils of Pongamia, Mahua and Jatropha as an alternative fuel for diesel engine. Biodiesel is produced by followed transesterification process, using catalyst sodium hydroxide (NaOH) and methyl alcohol (CH3OH). A single cylinder four stroke three-wheeler auto diesel engine is used to evaluate the exhaust emission characteristics at a constant speed of 1500rpm with varying loads. Diesel as a reference fuel and cent percent of Pongamia Methyl Ester (PME), Mahua Methyl Ester (MME) and Jatropha Methyl Ester (JME) are used as an alternative fuel. The physicochemical properties of biodiesels are within the limits of international standards (ASTM D6751) noticeably. The results of tested biodiesels offer low exhaust emissions compared to diesel fuel, owing to presence of molecular oxygen and high cetane number. At maximum load the NOx emission reduced by 18.41% for JME, 17.46% for MME and 7.61% for PME. Low levels of CO emissions are recorded for JME (66%) followed by MME (33%) and PME (22%). Unburnt hydrocarbon emissions were reduced by 85.75% for JME and MME, for PME 14.28% reduction is observed. Exhaust smoke emissions are also reduced for PME and MME by 18.84%, for JME 14.49%. As a conclusion, it is observed that all the methyl esters exhibit significant reduction in harmful exhaust emissions compared to diesel fuel and JME is noted as a better choice.

Influence of Dual Fuel Twin Injection on Diesel Engine Combustion and Emission Characteristics

2013 ◽  
Vol 768 ◽  
pp. 206-212 ◽  
Author(s):  
K. Senthil Kumar ◽  
R. Thundil Karuppa Raj
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Release Rate ◽  
Exhaust Emission ◽  
Dual Fuel ◽  
Emission Characteristics ◽  
Pilot Injection ◽  
Crank Angle ◽  
Engine Combustion ◽  
Pilot Fuel

The objective of this study is to investigate the feasibility of two-stage injection on combustion and exhaust emission characteristics in diesel (main fuel) ethanol (pilot fuel) fuelled single cylinder diesel engine. The pressure crank angle and net heat release rate diagrams revealed that increase in the ethanol pilot quantity causes an increase in the ignition delay in the pilot combustion and hence the main combustion due to diesel fuel is slightly influenced by the ethanol pilot fuel. The increase in the pilot injection decreases the NOx considerably. The concentration of soot emissions also decreases with increase in pilot injection. The CO emissions increases with increase in pilot injection and a slight increase in HC emission is observed.

scholarly journals ANALYSIS OF PERFORMANCE AND EMISSION CHARACTERISTICS OF A DIESEL ENGINE FUELLED WITH BIODIESEL

2017 ◽  
Vol 46 (1) ◽  
pp. 16-21
Author(s):  
R. Sundara Raman ◽  
G. Sankara Narayanan ◽  
N. Manoharan ◽  
S. Sendilvelan
Keyword(s):  
Diesel Engine ◽  
Rice Bran ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Rice Bran Oil ◽  
Transport Sector ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Particulate Emission ◽  
Promising Alternative

The rapid depletion in world petroleum reserves and uncertainty in petroleum supply due to political and economical reasons along with the sharp escalation in the petroleum prices have simulated the search for alternatives to petroleum based fuels especially diesel and gasoline. Moreover, bulks of petroleum fuels are being consumed by agriculture and transport sector for which diesel engine happens to be the prime mover. Though there are wide varieties of alternative fuels available the research has not yet provided the right renewable fuel to replace diesel. Vegetable oil due to their properties being close to diesel fuel may be a promising alternative for diesel engines. Due to their high viscosity, they cannot be directly used in a diesel engine. Transesterification is one method by which viscosity could be drastically reduced and the fuel could be adopted for use in diesel engine. Present investigation focuses on use of Rice Bran Oil in Diesel engine. Performance and exhaust emission characteristics of the engine have been evaluated. Esterified Rice Bran Oil has exhibited performance very close to that of diesel fuel. In the present work it is observed that, the NOX and unburned hydrocarbon emission decreases and carbon monoxide, particulate emission and smoke intensity increases with the use of biodiesel in diesel engine. When compared to non-esterified Rice Bran Oil, esterified Rice Bran Oil emits less smoke and therefore be regarded as an environment friendly fuel.

Effect of Biodiesel-Ethanol Blended Fuel Spray Characteristics on the Reduction of Exhaust Emissions in a Common-Rail Diesel Engine

2008 ◽  
Author(s):  
Seung Hyun Yoon ◽  
Su Han Park ◽  
Hyun Kyu Suh ◽  
Chang Sik Lee
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Injection Rate ◽  
Fuel Spray ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Blended Fuel ◽  
Ethanol Blends ◽  
Blended Fuels ◽  
Conventional Diesel Fuel

An experiment was performed to analyze the effects of biodiesel-ethanol blended fuel spray on the combustion and exhaust emission characteristics of a single-cylinder common-rail diesel engine. To analyze the macroscopic and microscopic characteristics of biodiesel blended fuel spray, measurements of the injection rate, droplet diameter, and spray tip penetration were taken using an injection rate meter, spray visualization and a droplet measuring system. The combustion, exhaust emission characteristics and size distributions of particulate matter were determined for various engine operating conditions using biodiesel-ethanol blends, and the results were compared to those of conventional diesel fuel. In this investigation, the measured results of biodiesel-ethanol blended fuels show that the Sauter mean diameter (SMD) decreased with an increase of relative velocity between the injected fuel and ambient gas. Comparing the combustion characteristics of diesel fuel and biodiesel-ethanol blended fuels, both diesel and blended fuel showed similar trends in combustion pressure and the rate of heat release. However, the combustion of biodiesel-ethanol blends had lower combustion characteristics such as combustion pressures and heat release rates than those of diesel fuel because of their lower heating values. In the case of exhaust gas recirculation (EGR), the indicated specific NOx (ISNOx), and soot concentrations were lower than those of conventional diesel fuel.

Numerical Studies of Engine Performance, Emission and Combustion Characteristics of a Diesel Engine Fuelled with Hydrogen Blends

2014 ◽  
Vol 1016 ◽  
pp. 582-586 ◽  
Author(s):  
Tayfun Ozgur ◽  
Erdi Tosun ◽  
Ceyla Ozgur ◽  
Gökhan Tuccar ◽  
Kadir Aydın
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Combustion Process ◽  
Engine Performance ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Performance And Emission ◽  
Hydrogen Addition ◽  
Numerical Studies ◽  
Simulation Results

In this study the performance, exhaust emission characteristics and combustion process of the engine fueled with hydrogen-diesel blends were compared to diesel fuel. Hydrogen was blended with diesel fuel at the volumetric ratios of 5%, 10% and 20%. AVL BOOST software was dedicated to simulate the performance and emission values for various blends of hydrogen with diesel fuel. The simulation results showed that hydrogen addition to diesel fuel improve both engine performance and exhaust emmisions.

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