Exergy analysis of biodiesel fueled direct injection CI engines

Yamin, Jehad; Sheet, Eiman Ali Ehsan; Hdaib, Ismail I.

doi:10.1080/15567036.2018.1476618

Cited by 16 publications

(7 citation statements)

References 12 publications

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“…It can be seen that as torque increases, other parameters like air velocity, brake thermal and exergy efficiency increase too. This is an indication that torque is the most influential parameter affecting the efficiency of a single-cylinder four-stroke gasoline engine, this finding concurs with that of other researchers who have worked on other types of engines (Ghazikhani et al, 2014;Parlak, 2005;Yamin et al, 2018). Figure 2 is a graph of torque against brake thermal efficiency, the relationship between the two is linear with equations y = 0.3378x + 0.1231.…”

Section: Brake Thermal Efficiency and Exergy Efficiencysupporting

confidence: 88%

Exergy Analysis of a Single-Cylinder Four-Stroke Gasoline Engine

Mshelia

YUSUF

SUDİ³

2022

Konya Journal of Engineering Sciences

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In developing countries, the four-stroke single-cylinder gasoline engine finds wide use. Motorcycles, tricycles and household machines like vegetable grinding machines are but a few of the machinery which run on this engine. Researchers have found that this engine is inefficient and consumes a lot of fuel, in light of sustainability and energy efficiency, this study aimed to perform an exergy analysis of a single-cylinder 4-stroke gasoline engine to determine how best its efficiency can be improved. Parameters such as brake thermal power, exergy efficiency, the quantity of exergy destruction and the component of the engine which is the most influential on its efficiency were determined while varying the engine's torque. A G200K1 Honda engine was used as the study material. At the lowest tested torque of 9.4Nm, a corresponding brake power output of 2.4609kW and efficiency of 17.07% was measured, while at a higher torque 9.70Nm, a corresponding brake power output of 2.5395kW and efficiency of 17.62% was measured. It was also found that for every 1.06% rise in torque there is a corresponding 1.80% rise in brake power and exergy efficiency. It was concluded from the findings that the bulk of energy waste in the system comes from the high-temperature gas released from the engine's exhaust. For the overall efficiency of four-stroke single-cylinder gasoline engines to be improved, the exergy destruction due to combustion should be minimised by optimizing the combustion temperature and reducing heat loss from the combustion chamber.

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Section: Brake Thermal Efficiency and Exergy Efficiencysupporting

confidence: 88%

Exergy Analysis of a Single-Cylinder Four-Stroke Gasoline Engine

Mshelia

YUSUF

SUDİ³

2022

Konya Journal of Engineering Sciences

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“…The first part is well documented in other published articles of the authors. 4,10,11 Hence, there was no need to repeat the procedure in this article.…”

Section: Methodsmentioning

confidence: 97%

Performance and mapping of direct injection diesel engine using waste cooking oil biodiesel fuel

Yamin

Mushref

2019

Advances in Mechanical Engineering

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Engine performance and mapping were done using diesel and used cooking oil biodiesel fuels. This was done using the Tempest, 1500 cc compression ignition engine testbed. This engine is connected to a dynamometer testbed and its control panel to measure the needed performance parameters. The crankshaft speed varied between 35 and 60 rps, while the load tested from no load to full load. The engine speed according to the manufacturer should not exceed 60 rps. The coolant temperature remained almost constant at around 70 o C. The experimental results were then utilized to adjust the engine simulation model using the Diesel-RK software. Results showed that improvement in engine operation with diesel is slightly compared with that of biodiesel fuel. It was also found that the combustion process with biodiesel starts earlier during the mixing phase than diesel fuel. The primary results showed that using potassium hydroxide as a catalyst, the biodiesel yielded 45% more compared with sodium hydroxide, 5% higher calorific value, and 10% lower viscosity. From mapping point of view, the results showed that biofuel has a lower thermal efficiency than the regular diesel. A diesel-powered engine has the lowest fuel consumption of around 250-300 g/kWh at the relatively higher power and mean effective pressure values. While for the biodiesel fuels this is around 350 g/kWh at relatively lower engine speeds, power, and mean effective cylinder pressure. From heat release rate point of view, biodiesel burns earlier than diesel fuel due to higher cetane number and reduced delay periods, on cylinder pressure and temperatures, for the ignition timing and engine-operating parameters, diesel shows better performance than biodiesel for high and half loads.

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“…The availability computations were carried out for the tested engine based on the concept of the control volume analysis for the second law of thermodynamics. Accordingly, the change rate of the control volume availability under the steady-state assumption is given by [13]:…”

Section: Methodology Of Analysismentioning

confidence: 99%

“…Furthermore, the availability (exergy) analysis for this application, related to the second law of thermodynamics, has grown in the last four decades [12]. The availability differentiates from the energy in terms of the destruction rate due to several phenomena, including friction, combustion, throttling, and mixing [13]. Furthermore, the system's sustainability and environmental effect could be assessed based on the second law of thermodynamics analysis [14].…”

Section: Introductionmentioning

confidence: 99%

Throttling effect on the availability and sustainability of a gasoline-fuelled spark ignited multi-cylinder engine

Hamada,

Ibrahim,

Rahim

et al. 2023

Eng. Res. Express

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Large energy waste is one of the internal combustion engine challenges, making it unsustainable and unfriendly to the environment. Charging the spark ignition engine with the required fuel-air mixture is associated with a particular quantity of energy loss due to flow throttling. Throttle position effect on the availability, sustainability, and environmental trends of a gasoline, spark-ignited engine was evaluated based on thermodynamic analyses of real experiments. The availability and sustainability analyses were performed utilizing the relations governing the thermodynamic system under various engine speeds (1500–4000 rpm) at part and wide-open throttle (POT and WOT) conditions. The results indicated that the WOT position mostly ensures the best sharing of useful availability, i.e., 2% greater, more sustainable, i.e., 3% better, and environmentally friendly, i.e., 16% healthier, engine operation for the entire tested speed range. On the other hand, an optimum engine speed, mostly 3000 rpm, of the tested engine yielded the maximum efficiencies, i.e., 3% higher, lowest entropy production, i.e., 15% lower, and best availability proportions, as well as the most sustainable and environmentally friendly operation mode. Furthermore, a considerable perspective of the waste heat recovery of the associated availability with exhaust gases was achieved under POT and WOT conditions. The acquired improvement in engine efficiency based on the recovery potential was in the range of 3% to 19.7% and 13.6% to 24% for the WOT and POT conditions, respectively. However, the detected recovery rate and efficiency improvement were randomly tended with engine speed variation. In terms of the recovery potential, the highest engine efficiencies were about 46% and 50% at 3000 rpm, for the POT and WOT conditions, respectively. Finally, in average around 10% and 52% increment with 20% and 24% reduction was detected for the environmental impact of the CO2, NOx, CO and HC, respectively, under the WOT condition in comparison with POT condition.

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Exergy analysis of biodiesel fueled direct injection CI engines

Cited by 16 publications

References 12 publications

Exergy Analysis of a Single-Cylinder Four-Stroke Gasoline Engine

Exergy Analysis of a Single-Cylinder Four-Stroke Gasoline Engine

Performance and mapping of direct injection diesel engine using waste cooking oil biodiesel fuel

Throttling effect on the availability and sustainability of a gasoline-fuelled spark ignited multi-cylinder engine

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