Experimental evaluation of the performance and exhaust emissions of porous medium diesel and Otto engines

Tangestani, V.; Isfahani, Amir Homayoon Meghdadi

doi:10.1007/s13762-019-02475-4

Cited by 6 publications

(3 citation statements)

References 15 publications

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“…The fact that the latent heat of evaporation of methanol is higher than that of ethanol and thereby it may have slowed the oxidation rate of the fuel by reducing the cylinder gas temperature and increased CO emission slightly . HC emission is an indicator that reflects the incomplete combustion products inside the combustion chamber and occurs due to rich mixture, low combustion temperature, crevice volume, extinguishment of the flame front on the combustion chamber surfaces, and engine lubricating oil (Tangestani et al, 2020;Uslu et al, 2020). HC emissions that occurred in the study, depending on the engine load, are presented in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

A Study Toward Analyzing the Energy, Exergy and Sustainability Index Based on Performance and Exhaust Emission Characteristics of a Spark-Ignition Engine Fuelled with the Binary Blends of Gasoline and Methanol or Ethanol

Doğan¹,

Yeşilyurt²,

Erol³

et al. 2020

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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The anxieties regarding global warming upon increasing greenhouse gas emission grades worldwide and the presence of petroleumbased fuels have directed the researchers to focus on the development of biofuels as well as the utilization of reformulated gasoline fuels by adding oxygenated additives resulting in an extensive application to improve fuel properties. In this study, engine performance and exhaust emission tests were performed using pure gasoline and volumetrically 10% ethanol-C2 or methanol-C1/gasoline blends (G100, E10, and M10). The engine experiments for all test fuels were carried out in a single-cylinder, fourstroke, water-cooled, spark-ignition (SI) engine under fixed engine speed (1500 rpm) and various loading conditions (25%, 50%, 75%, and 100%). In the tested engine, the brake specific fuel consumption (BSFC) values of G100, M10, and E10 fuels under full load condition were found to be as 0.279 kg/kWh, 0.296 kg/kWh and 0.307 kg/kWh, respectively. When the exhaust emissions were examined, E10 and M10 fuels were observed to have lesser CO, CO2, NOX, and HC emissions in comparison with pure gasoline. The lowest CO emission was determined as 3.15% for E10 fuel at a 75% load. NOX emissions descended with the increase of engine load in all fuel blends meanwhile the best performance is measured as 908.86 ppm in E10 fuel at 100% load. The minimum HC emission for E10 fuel was measured as 116.36 ppm at a 75% load. Compared with G100 fuel, E10 and M10 blends emitted 39% and 35% fewer HC emissions, respectively at 75% load. Besides, E10 and M10 fuels generated 8% and 5% less CO2 emissions at all engine loads, respectively, when compared to G100 fuel. As a result of thermodynamic analyses; The highest exergy efficiency values were found to be at 21.0% for G100, 17.92% for E10, and 16.85% for M10, respectively. Besides, the energy efficiencies were obtained to be as 30.01% for G100, 28.33% for E10, and 29.90% for M10, respectively. According to the sustainability analysis, E10 fuel performed better results than M10 fuel in order to be an alternative to G100 fuel.

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Section: Resultsmentioning

confidence: 99%

A Study Toward Analyzing the Energy, Exergy and Sustainability Index Based on Performance and Exhaust Emission Characteristics of a Spark-Ignition Engine Fuelled with the Binary Blends of Gasoline and Methanol or Ethanol

Doğan¹,

Yeşilyurt²,

Erol³

et al. 2020

Uluslararası Muhendislik Arastirma Ve Gelistirme Dergisi

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“…With the development of technology, several novel technologies have been used to improve the performance of diesel engines. 5,6 In order to improve the performance of diesel engines at high altitudes requires an increase in the oxygen content of the combustion process, for example by using supercharging or adding oxygenated fuels. Researchers showed that the use of oxygenated fuels could make up for the lack of intake oxygen to a certain extent, and effectively inhibit the formation of emissions.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on combustion and emission characteristics of diesel methanol dual fuel (DMDF) engine at various altitudes

Wang

Chen

2022

Energy & Environment

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In order to reveal the effects of diesel and diesel methanol dual fuel (DMDF) on engine performance at different altitudes, especially on combustion stability. In this study, a comparison of experimental research on characteristics of combustion, economy, and emissions for a turbocharged DMDF at various simulated altitudes (10m, 700m, 1670m, and 2400m) and three working conditions (1200rpm-72 Nm, 1800rpm-158 Nm, and 2200rpm-153 Nm) were conducted and analyzed combustion characteristics, economy and emissions. At 1800rpm and 2200rpm, with the increment of altitude, the peak value of the cylinder pressure, the pressure rise rate, and the brake thermal efficiency (BTE) for DMDF mode were higher than diesel mode, while combustion center (CA50) and combustion duration of diesel mode higher than DMDF mode. At 1200rpm and 1800 rpm, the maximum heat release rate (HRR) of DMDF mode was higher than diesel mode. When the altitude rose from 10m to 2400m, the coefficient of variation of peak pressure (COVPP) of DMDF mode increased while the coefficient of variation of indicated mean effective pressure (COVIMEP) of DMDF mode decreased, which means the combustion of dual-fuel is relatively stable. The exhaust temperature of DMDF mode was lower than that of diesel mode at various altitudes. Compared with diesel mode, NOX and Soot emissions in DMDF model significantly decreased at different altitudes and working conditions.

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“…Diesel engines are widely applied in the field of commercial vehicles due to their good power features, fuel economy, and reliability. Although they have many advantages, they have a significant impact on the problem of environmental pollution worldwide [1,2]. The nitrogen oxide (NO x ) and particulate matter emissions of diesel engines are considerable, accounting for 70% and 90%, respectively, of the total vehicle emissions, and are also responsible for several health problems [3,4].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes

Zhao¹,

Lou²,

Zhang³

et al. 2021

Micromachines

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The thermal insulation performance of exhaust pipes coated with various materials (basalt and glass fiber materials) under different braiding forms (sleeve, winding and felt types) and the effects on the emission characteristics of diesel engines were experimentally studied through engine bench tests. The results indicated that the thermal insulation performance of basalt fiber was higher than that of glass fiber, and more notably advantageous at the early stage of the diesel engine idle cold phase. The average temperature drop during the first 600 s of the basalt felt (BF) pipe was 2.6 °C smaller than that of the glass fiber felt (GF) pipe. Comparing the different braiding forms, the temperature decrease in the felt-type braided material was 2.6 °C and 2.9 °C smaller than that in the sleeve- and winding-type braided materials, respectively. The basalt material was better than the glass fiber material regarding the gaseous pollutant emission reduction performance, especially in the idling cold phase of diesel engines. The NOx conversion rate of the BF pipe was 7.4% higher than that of the GF pipe, and the hydrocarbon (HC) conversion rate was 2.3% higher than that of the GF pipe, while the CO conversion rate during the first 100 s was 24.5% higher than that of the GF pipe. However, the particulate matter emissions were not notably different.

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Experimental evaluation of the performance and exhaust emissions of porous medium diesel and Otto engines

Cited by 6 publications

References 15 publications

A Study Toward Analyzing the Energy, Exergy and Sustainability Index Based on Performance and Exhaust Emission Characteristics of a Spark-Ignition Engine Fuelled with the Binary Blends of Gasoline and Methanol or Ethanol

A Study Toward Analyzing the Energy, Exergy and Sustainability Index Based on Performance and Exhaust Emission Characteristics of a Spark-Ignition Engine Fuelled with the Binary Blends of Gasoline and Methanol or Ethanol

Experimental investigation on combustion and emission characteristics of diesel methanol dual fuel (DMDF) engine at various altitudes

Experimental Study on Diesel Engine Emission Characteristics Based on Different Exhaust Pipe Coating Schemes

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