Influence of fuel injection pressures on Calophyllum inophyllum methyl ester fuelled direct injection diesel engine

Nanthagopal, K.; Ashok, B.; Raj, R. Thundil Karuppa

doi:10.1016/j.enconman.2016.03.002

Cited by 133 publications

(18 citation statements)

References 29 publications

(40 reference statements)

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“…Biodiesel, when fuelled in diesel engines, improve their performance and reduces certain emissions but promotes higher thermal NO x . In order to resolve these issues, many investigators have resorted on studying effects by varying the engine parameters such as injection opening pressure, 9,10 compression ratio 11,12 and static injection timing 13,14 . Of all engine parameters, compression ratio (CR) marks a noteworthy parameter as biodiesel is much denser and lesser volatile fuel than that of conventional diesel.…”

Section: Introductionmentioning

confidence: 99%

The effect of nickel oxide nano‐additives in Azadirachta indica biodiesel‐diesel blend on engine performance and emission characteristics by varying compression ratio

Srinidhi¹,

Acharya²,

Channapattana

et al. 2020

Env Prog and Sustain Energy

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The utilization of biodiesel‐diesel blends in compression ignition (CI) engines are a viable option for the current energy crises. But due to better combustion features of biodiesel‐diesel blends leading to high NOx release from engine exhaust hinders the use of such blends. Usually all of the harmful exhaust emissions like HC and CO reduces marginally, except nitrogen oxides at higher compression ratios with biodiesel blended fuel. The present paper focuses on the study of variation of compression ratio and use of NiO nanoparticles in neem biodiesel‐diesel mixture (NB25) at different braking loads. A total of four test fuels of NB25 blend were prepared having nickel oxides at different concentration levels of 25, 50, 75, and 100 ppm. The current findings reveal that the use of 75 ppm of NiO in NB25 blend reduces the amount of thermal NOx by 6.2% compared to the absence of nanoparticles. Also, the performance parameters such as brake thermal efficiency improved by 2.9% and brake specific fuel consumption reduced by 1.8%. The presence of 75 ppm of NiO in NB25 not only shows best performance and also lower harmful emission.

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Section: Introductionmentioning

confidence: 99%

The effect of nickel oxide nano‐additives in Azadirachta indica biodiesel‐diesel blend on engine performance and emission characteristics by varying compression ratio

Srinidhi¹,

Acharya²,

Channapattana

et al. 2020

Env Prog and Sustain Energy

View full text Add to dashboard Cite

show abstract

“…This improves the air fuel mixing and rapid evaporation of fuel that lead to complete combustion and reduces the HC, CO and soot emissions [27,28]. However, the NO x emission increases with the increase of injection pressure [17,29,30]. This is due to a reduction in ignition delay, leading to higher heat released in premixed phase and an increase in the in-cylinder temperature [26,31].…”

Section: Prior Studiesmentioning

confidence: 99%

Implementation of Common Rail Direct Injection System and Optimization of Fuel Injector Parameters in an Experimental Single-Cylinder Diesel Engine

Teoh

How

Peh³

et al. 2020

Processes

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The diesel engine is one of the solutions to slow down fossil fuel depletion due to its high efficiency. However, its high pollutant emission limits its usage in many fields. To improve its efficiency and emissions, a conventional mechanical fuel injection system (MFI) was be replaced with common rail direct injection (CRDI) system for the purpose of this study. In this way, injection parameters such as injection timing, injection pressure and multiple injection schemes can be tuned to enhance the engine performance. The rail pressure and engine speed response of the modified diesel engine was tested. It was found that by advancing the start of injection timing (SOI) timing or increasing the rail pressure, the brake torque generated can be increased. Multiple injection schemes can be implemented to reduce the peak heat release rate (HRR). Post injection was observed to increase the late combustion HRR. The maximum pressure rise rate (PRR) can be reduced by applying pilot injection. Further research was conducted on optimizing fuel injector parameters to improve the indicated mean effective pressure (IMEP) consistency and reduce injector power consumption. The consistency of IMEP was indicated by coefficient of variation (CoV) of IMEP. The injector parameters included open time, low time and duty cycle of injector signals. These parameters were optimized by carrying out response surface methodology. The optimized parameters were observed to be 230 µs for open time, 53µs for low time and 27.5% for duty cycle. The percentage of error of CoV of IMEP and injector power were found to be lower than 5% when the predicted results are compared with experimental results.

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“…Results showed that different injection pressures changed the fuel atomizing characteristics; when the injection pressure was 220 bar, CO, HC, and NOx were the least, and smoke had the same characteristics. Nanthagopal et al [58] studied the effect of Calophyllum inophyllum methyl ester on diesel engine performance, emissions, and combustion characteristics at different injection pressures. Their investigations with injection pressures of 200, 220, and 240 bar were carried out to analyze parameters including brake thermal efficiency (BTE), specific fuel consumption, heat release rate, and engine emissions of a direct injection diesel engine fueled with 100% biodiesel.…”

Section: Injection Pressurementioning

confidence: 99%

A Review of Early Injection Strategy in Premixed Combustion Engines

Liang

Zhang

et al. 2019

Applied Sciences

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Due to the increasing awareness of environmental protection, limitations on exhaust emissions of diesel engines have become increasingly stringent. This challenges diesel engine manufacturers to find a new balance between engine performance and emissions. Advanced combustion modes for diesel engines, such as homogeneous charge compression ignition (HCCI) and premixed charge compression ignition (PCCI), which can simultaneously reduce exhaust emissions and substantially improve thermal efficiency, have drawn increasing attention. In order to allow enough time to prepare the homogeneous mixture, the early injection strategy has been utilized widely in HCCI and PCCI diesel engines. This paper is aimed at providing a comprehensive review of the effects of early injection parameters on the performance and emissions of HCCI and PCCI engines fueled by both diesel and alternative fuels. Various early injection parameters, including injection pressure, injection timing, and injection angle, are discussed. In addition, the effect of the blending ratio of alternative fuels is also summarized. Every change in parameters has its own advantages and disadvantages, which are explained in detail in order to help researchers choose the best early injection parameters for HCCI and PCCI engines.

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Influence of fuel injection pressures on Calophyllum inophyllum methyl ester fuelled direct injection diesel engine

Cited by 133 publications

References 29 publications

The effect of nickel oxide nano‐additives in Azadirachta indica biodiesel‐diesel blend on engine performance and emission characteristics by varying compression ratio

The effect of nickel oxide nano‐additives in Azadirachta indica biodiesel‐diesel blend on engine performance and emission characteristics by varying compression ratio

Implementation of Common Rail Direct Injection System and Optimization of Fuel Injector Parameters in an Experimental Single-Cylinder Diesel Engine

A Review of Early Injection Strategy in Premixed Combustion Engines

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