Optimization of Injection Timing and Injection Duration of a Diesel Engine Running on Pure Biodiesel SME (Soya Methyl Ester)

Alghafis, Abdullah; Raouf, Eihab A.

doi:10.4236/ojapps.2020.107034

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…Alghafis and Raouf [15] investigated the impact of injection timing and injection duration on engine brake power and NO x using Diesel-RK simulation software. They operated the engine at different engine speeds of 1000, 1500, 2000, 2500, 3000 and 4000 rpm, at different injection timing of 10˚ CA-bTDC, 5˚ CA-bTDC and 0˚ CA-TDC and at different injection duration of 20˚, 25˚, 30˚, 35˚ and 40˚ CA.…”

Section: Introductionmentioning

confidence: 99%

Effect of Palm Oil Biodiesel Blends on Engine Emission and Performance Characteristics in an Internal Combustion Engine

Ajie¹,

Ojapah²,

Diemuodeke³

2023

OJEE

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Increasing global environmental issues and depleting fossil fuel reserves has necessitated the need for alternative and sustainable fuel. In this paper, the effects of biodiesel and its blend on engine emission and performance characteristics in an internal combustion engine were analyzed. Biodiesel derived from the transesterification of raw palm oil was blended with diesel fuel at different proportions designated as PO5 (5% Biodiesel and 95% Diesel), PO10 (10% Biodiesel and 90% Diesel), PO15 (15% Biodiesel and 85% Diesel), PO20 (20% Biodiesel and 80% Diesel), PO50 (50% Biodiesel and 50% Diesel), PO85 (85% Biodiesel and 15% Diesel), and PO100 (100% Biodiesel). A Lombardini 2-cylinder, four-stroke direct injection diesel engine with a compression ratio of 22.8 was developed using Ricardo Wave software in which diesel, palm oil biodiesel blends and pure biodiesel are used in the model, and the obtained results were analysed and presented. The simulation was done under varying engine speeds of 1200 rpm to 3200 rpm at full load condition. Biodiesel and its blends are more environment-friendly and non-toxic when compared to diesel fuel; it also improves the mechanical efficiency of the engines, and above all can also lead to a reduction in poverty among rural dwellers. The obtained results showed that brake specific fuel consumption and brake thermal efficiency increased with palm oil biodiesel blends as compared to diesel fuel which might be a result of biodiesel's lower heating value, and the increase in thermal energy may be a result of the oxygenation of the biodiesel blend as compared to pure diesel. In terms of brake torque, palm oil biodiesel blends were lesser than diesel fuel. The CO, HC, and NO x emissions of palm oil biodiesel blends decreased significantly compared to that of pure diesel. From this study, palm oil biodiesel emits lesser emissions than diesel fuel and its performance characteristics are similar to diesel fuel. Therefore, palm oil biodiesel can be used without any modifications directly in a diesel engine.

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Section: Introductionmentioning

confidence: 99%

Effect of Palm Oil Biodiesel Blends on Engine Emission and Performance Characteristics in an Internal Combustion Engine

Ajie¹,

Ojapah²,

Diemuodeke³

2023

OJEE

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“…Their results revealed that ignition delay and emission in biodiesel blends are influenced largely by fuel mixing concentration, injection pressure and ambient temperature which affects the autoignition and combustion. [9] investigated the impact of injection timing and duration on engine brake power and NO x using Diesel-RK simulation software. They operated the engine at different engine speeds of 1000, 1500, 2000, 2500, 3000 and 4000 rpm, at different injection timing of 10° CA-bTDC, 5° CA-bTDC and 0° CA-TDC and different injection duration of 20°, 25°, 30°, 35° and 40° CA.…”

Section: Introductionmentioning

confidence: 99%

Effects of Waste Cooking Oil Biodiesel on Performance, Combustion and Emission Characteristics of a Compression Ignition Engine

Ajie¹,

Ojapah²,

Diemuodeke³

2023

J Energ Power Technol

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With their higher sustainability index, biofuels, environmentally-friendly and renewable nature is a viable alternative energy source in the transportation sector. This study presents the effect of waste cooking oil (WCO) biodiesel on performance, combustion, and emission from a compression ignition engine. The biodiesel was blended with diesel in varying proportions of 5% biodiesel and 95% diesel (designated as B5), 10% biodiesel in diesel (B10), 15% biodiesel in diesel (B15), 20% biodiesel in diesel (B20), 50% biodiesel in diesel (B50), and 85% biodiesel in diesel (B85). Simulation of a 2-cylinder diesel engine fueled with diesel, biodiesel blends and pure biodiesel was carried out using Ricardo Wave software and the results obtained were validated. The engine speed was varied from 1200 rpm to 3200 rpm at full load condition using a positive valve overlap of 32°. Performance results showed that WCO biodiesel blends at 1200 rpm produce brake-specific fuel consumption of, 0.240109 kg/kWhr, 0.241996 kg/kWhr, 0.244331 kg/kWhr, 0.24661 kg/kWhr, 0.26089 kg/kWhr, 0.27947 kg/kWhr and 0.28798 kg/kWhr for B5, B10, B15, B20, B50, B85 and B100 respectively, as compared to 0.239383 kg/kWhr of diesel fuel while the brake power and torque reduced at full load with varying speed. Combustion analysis showed similar trends between diesel and biodiesel blends whereas biodiesel blends produced shorter ignition delay, shorter combustion duration, and lower heat release rate. Emission levels of CO, reduced by 1%, 10%, 15%, 22%, 48%, 68% and 74% with B5, B10, B15, B20, B50, B85 and B100 respectively at 1600 rpm when compared to diesel fuel. HC emission was reduced by 9% with B100. NO<sub>x</sub> levels slightly increased when B5, B10, B15, and B20 at 1200 rpm and B10 and B15 at 1600 rpm were fueled in the engine. The exhaust gas temperature (EGT) of B5, B10 at 1600 rpm was higher than diesel fuel and B5, B10 at 2400 rpm to 3200 rpm EGT was higher than diesel fuel. Generally, biodiesel blends showed better emission levels and other combustion and performance levels are within acceptable limits.

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3E analyses of different blend fuels in an internal combustion engine

Leal,

Silva

2024

Heat Trans

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In response to the escalating emphasis on sustainability across diverse sectors, this study addresses the imperative to combat environmental degradation through conscientious development. The primary focus is on assessing the feasibility of replacing fossil fuels with renewable alternatives in internal combustion engines (ICEs) equipped with direct fuel injection. The research employs energy and exergy analyses, coupled with economic analysis, to comprehensively evaluate the performance of fuels and blends. Applying the Lotus Engine software, computational analyses are conducted, taking into account the specific geometry of the engine. Simulations explore different λ‐factors to identify optimal performance configurations for each fuel or blend. Noteworthy outcomes reveal that blends featuring green hydrogen yield remarkable improvements, showing high torque (max. +11.5%), power (max. +14.35%), thermal efficiency (max. +3%), and exergy efficiency (max. +21.56%). These blends also demonstrate reduced operating costs (max. −10%), although with higher exergy losses, indicating areas for potential enhancement. Conversely, fuels containing ethanol show intermediate values between the blends and pure fuels. Consequently, this study effectively establishes the significance of these fuels in ICEs, supported by comprehensive energy, exergy, and economic analyses. The findings underscore the promising potential of renewable fuels as viable alternatives to fossil fuels, marking a substantial stride towards sustainable energy solutions and environmental preservation.

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Optimization of Injection Timing and Injection Duration of a Diesel Engine Running on Pure Biodiesel SME (Soya Methyl Ester)

Cited by 7 publications

References 22 publications

Effect of Palm Oil Biodiesel Blends on Engine Emission and Performance Characteristics in an Internal Combustion Engine

Effect of Palm Oil Biodiesel Blends on Engine Emission and Performance Characteristics in an Internal Combustion Engine

Effects of Waste Cooking Oil Biodiesel on Performance, Combustion and Emission Characteristics of a Compression Ignition Engine

3E analyses of different blend fuels in an internal combustion engine

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