AN OVERVIEW OF SPARK IGNITION ENGINE OPERATING ON LOWER-HIGHER MOLECULAR MASS ALCOHOL BLENDED GASOLINE FUELS

2015 ◽  
Vol 76 (5) ◽  
Author(s):  
Hazim Sharudin ◽  
Nik Rosli Abdullah ◽  
A. M. I. Mamat ◽  
Obed M. Ali ◽  
Rizalman Mamat
Keyword(s):  
Molecular Weight ◽  
Chemical Properties ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Fuel Properties ◽  
Fuel Additive ◽  
Performance And Emissions ◽  
The Difference ◽  
Physical And Chemical

This paper reviews the utilization of lower and higher molecular weight alcohols as fuel for spark ignition engine. As an alternative fuel for spark ignition engine, alcohol is widely accepted as comparable to gasolin. It is due to its ability that can be produced from biological matter through the current available and new processes. Moreover, alcohol is also considered as fuel additive due to its physical and chemical properties compatible with the requirements of modern engines. The objective of this paper is to provide an overview of these fuels by highlighting on the fuel properties and spark ignition engine responses. The first part of this review explains the important of alcohol fuel properties related to the engine performance and emissions, and the difference of these properties for each type of alcohol. The second part discusses recent advancements in research involving lower and higher molecular weight alcohols mainly responses from spark ignition engine.

Sensitivity Analysis of Fuel Physical Property Effects on Spark Ignition Engine Performance

2019 ◽  
Author(s):  
Noah Van Dam ◽  
R. Krishna Kalvakala ◽  
Frederik Boink ◽  
Zongyu Yue ◽  
Sibendu Som
Keyword(s):  
Physical Properties ◽  
Thermal Efficiency ◽  
Alternative Fuels ◽  
Chemical Properties ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Fuel Properties ◽  
Sensitivity Analyses ◽  
The Relationship

Abstract Alternative fuels are of interest to automakers and regulators due to their potential to reduce net greenhouse gas emissions from transportation sources. Alternative fuels also have fuel properties which may enable advanced combustion modes with higher engine thermal efficiencies. There has been previous work to identify the relationship between various fuel properties and engine performance, but most of this work has been experiments or simulations where the change in properties was obtained through changing the fuel composition, making isolating the effects of individual fuel properties difficult. In this study, numerical simulations have been used to investigate the effects of individual fuel physical properties such as viscosity or heat of vaporization (HoV) on engine performance. Simulations have been performed of two different engine platforms, the first an optical, single-cylinder research engine and the second a multi-cylinder production engine. Both engines are direct-injection spark-ignition engines with pent-roof heads and are designed for automotive applications. Each engine was run at a different operating condition, one stable and one knock-limited. Different base fuels provided a variety of simulated conditions. Up to six different fuel properties were varied as part of Global Sensitivity Analyses performed for each of the engines with multiple performance targets including thermal efficiency, combustion efficiency and combustion phasing. Results show trends that are largely consistent with previous experimental findings using multiple fuels. The engine thermal efficiency was primarily sensitive to the fuel’s HoV, with other fuel physical properties having smaller effects. For optical engine results, the magnitude of the effect was greater in this study than expected based on previous experimental results were many fuel physical and chemical properties were varied simultaneously. However, for the multi-cylinder production engine, the relationship between thermal efficiency and HoV was slightly smaller.

scholarly journals Numerical Study of Engine Performance and Emissions for Port Injection of Ammonia into a Gasoline\Ethanol Dual-Fuel Spark Ignition Engine

2021 ◽  
Vol 11 (4) ◽  
pp. 1441
Author(s):  
Farhad Salek ◽  
Meisam Babaie ◽  
Amin Shakeri ◽  
Seyed Vahid Hosseini ◽  
Timothy Bodisco ◽  
...  
Keyword(s):  
Numerical Study ◽  
Combustion Process ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Combustion Model ◽  
Dual Fuel ◽  
Spark Ignition Engines ◽  
Performance And Emissions ◽  
Hc Emissions

This study aims to investigate the effect of the port injection of ammonia on performance, knock and NOx emission across a range of engine speeds in a gasoline/ethanol dual-fuel engine. An experimentally validated numerical model of a naturally aspirated spark-ignition (SI) engine was developed in AVL BOOST for the purpose of this investigation. The vibe two zone combustion model, which is widely used for the mathematical modeling of spark-ignition engines is employed for the numerical analysis of the combustion process. A significant reduction of ~50% in NOx emissions was observed across the engine speed range. However, the port injection of ammonia imposed some negative impacts on engine equivalent BSFC, CO and HC emissions, increasing these parameters by 3%, 30% and 21%, respectively, at the 10% ammonia injection ratio. Additionally, the minimum octane number of primary fuel required to prevent knock was reduced by up to 3.6% by adding ammonia between 5 and 10%. All in all, the injection of ammonia inside a bio-fueled engine could make it robust and produce less NOx, while having some undesirable effects on BSFC, CO and HC emissions.

scholarly journals The Effects of Port Water Injection on Spark Ignition Engine Performance and Emissions Fueled by Pure Gasoline, E5 and E10

Processes ◽  
2020 ◽  
Vol 8 (10) ◽  
pp. 1214
Author(s):  
Farhad Salek ◽  
Meisam Babaie ◽  
Maria Dolores Redel-Macias ◽  
Ali Ghodsi ◽  
Seyed Vahid Hosseini ◽  
...  
Keyword(s):  
Water Injection ◽  
Engine Performance ◽  
Spark Ignition ◽  
Injection Rate ◽  
Spark Ignition Engine ◽  
Oxides Of Nitrogen ◽  
Human Beings ◽  
Performance And Emissions ◽  
Engine Performance And Emissions ◽  
Engine Power

It has been proven that vehicle emissions such as oxides of nitrogen (NOx) are negatively affecting the health of human beings as well as the environment. In addition, it was recently highlighted that air pollution may result in people being more vulnerable to the deadly COVID-19 virus. The use of biofuels such as E5 and E10 as alternatives of gasoline fuel have been recommended by different researchers. In this paper, the impacts of port injection of water to a spark ignition engine fueled by gasoline, E5 and E10 on its performance and NOx production have been investigated. The experimental work was undertaken using a KIA Cerato engine and the results were used to validate an AVL BOOST model. To develop the numerical analysis, design of experiment (DOE) method was employed. The results showed that by increasing the ethanol fraction in gasoline/ethanol blend, the brake specific fuel consumption (BSFC) improved between 2.3% and 4.5%. However, the level of NOx increased between 22% to 48%. With port injection of water up to 8%, there was up to 1% increase in engine power whereas NOx and BSFC were reduced by 8% and 1%, respectively. The impacts of simultaneous changing of the start of combustion (SOC) and water injection rate on engine power and NOx production was also investigated. It was found that the NOx concentration is very sensitive to SOC variation.

scholarly journals Experimental study on the effects of camphor ethanol petrol blends in a spark ignition engine: performance and emissions analysis

2016 ◽  
Vol 6 (1) ◽  
pp. 19-28 ◽  
Author(s):  
Sankar Shanmugasundaram ◽  
Praveen Maruthur ◽  
Manivarma Kumaresan ◽  
Abhilash O. P ◽  
Akhil Das K ◽  
...  
Keyword(s):  
Experimental Study ◽  
Engine Performance ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Performance And Emissions ◽  
Engine Performance And Emissions

scholarly journals Effects of Ethanol Blending with Methanol-Gasoline fuel on Spark Ignition Engine Performance and Emissions

2021 ◽  
Vol 83 (2) ◽  
pp. 54-72
Author(s):  
Mohamad Qayyum Mohd Tamam ◽  
Nik Rosli Abdullah ◽  
Wira Jazair Yahya ◽  
Hasannuddin Abdul Kadir ◽  
Yanuandri Putrasari ◽  
...  
Keyword(s):  
Kinematic Viscosity ◽  
Ethanol Concentration ◽  
Engine Performance ◽  
Calorific Value ◽  
Spark Ignition ◽  
Spark Ignition Engine ◽  
Nox Emissions ◽  
Oxides Of Nitrogen ◽  
Performance And Emissions ◽  
Engine Performance And Emissions

This research investigated the effects of ethanol blending with methanol-gasoline as fuels in spark ignition engine and how it affects engine performance and emissions. Four ethanol-methanol-gasoline (GEM) blends were prepared with variable ethanol concentrations (0%, 5%, 10%, 15%) and constant methanol concentration (10%) and denoted as M10, E5M10, E10M10, and E15M10 in reference to each respective alcohol constituents. Physicochemical properties testing revealed that density and kinematic viscosity of GEM fuel blends increases with ethanol concentration. E15M10 has shown the most increase in density and kinematic viscosity with 10.7% and 18.7% increase respectively. In contrast, calorific value decreased as ethanol concentration decreases. E15M10 displayed the lowest calorific value at 16.9% lower than gasoline. Meanwhile, engine performance and emissions test showed that GEM fuels generally possess increased average Brake Thermal Efficiency (BTE) than pure gasoline. However, average Brake Specific Fuel Consumption (BSFC) for pure gasoline is lower. E15M10 displayed highest increment of BSFC at 17.2% average increase. Meanwhile, E10M10 displayed the highest improvement in BTE with an average of 9.4% increase. Exhaust emissions indicate that all GEM blends produced increased carbon dioxide (CO2) and oxides of nitrogen (NOx) emissions while carbon monoxide (CO) emissions decreases. E15M10 showed the most reduction in CO emissions with 90.6% decrease while E10M10 has shown the most increased CO2 and NOx emissions with 110% and 6.7 times increase respectively. In conclusion, up to 15% volume of ethanol blending with 10% volume methanol-gasoline was able to improve engine performance and emissions in terms of BTE and CO emissions.

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