A Study on Effect of Piston Bowl Shape on Engine Performance and Emission Characteristics of a Diesel Engine

Sakthisaravanasenthil, K.; Senthilkumar, S.; Sivakumar, G.

doi:10.1007/978-981-10-1771-1_61

Cited by 5 publications

(8 citation statements)

References 7 publications

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“…Also for CROME maximum pressure increased from 70 bar at 4°CA aTDC to 73 bar at 8°CA aTDC when CCS changed from HBP to RBP. Thus it can be concluded that piston bowl shapes have profound outcome on competence of diesel prime mover (Gajendra Babu, 2007;Godiganur et al, 2009;Muralidharan and Vasudevan, 2011;Nwafor, 2003;Sakthisaravanasenthil et al, 2017). The above results match with that in literature as Ramesh Bapu et al (2015), i.e they reported that due to higher specific heats the exhaust gases were absorbing more heat thereby reducing peak pressure and high temperature attained.…”

Section: Combustion Attributessupporting

confidence: 80%

“…In the literature, variation of parameters on the competence and exhaust of a diesel prime mover utilising biodiesel and blending with diesel were presented. It was concluded that piston bowl shapes have profound outcome on competence of diesel prime mover (Gajendra Babu, 2007;Godiganur et al, 2009;Muralidharan and Vasudevan, 2011;Nwafor, 2003;Sakthisaravanasenthil, et al, 2017). Changes in timings of fuel injection change the position of the piston when the injection takes place thereby changing the duration of injection relative to TDC and hence cylinder pressure and temperature.…”

Section: Introductionmentioning

confidence: 99%

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Effects of Combustion Vestibule Configuration on the Competence, Emissions and Combustion attributes of Direct Injection Diesel Prime Mover Powered with Diesel and Corn Oil Methyl Ester (CROME)

Indudhar

Banapurmath

Rajulu

2019

European Journal of Sustainable Development Research

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Combustion processes and emissions attributes squarely depend on combustion vestibule volume shapes relative to injector jet directions and cone angles. For injectors with more number of holes, these parameters change and may result in enhanced performance. By this we can make the gases to flow in different patterns compared to conventional engine and can anticipate higher brake thermal efficiency (BTE) and reduced emanations to meet stringent norms. Hence to optimize combustion chamber shapes (CCS) and vary squish, appropriate injection strategies are essential. In this occasion lab probes were conducted on a single cylinder four stroke open or induction swirl diesel engine using corn oil methyl ester (CROME) as fuel. For this variety of CCS were designed and manufactured. Injector with 6 numbers of hole and 0.2 mm orifice size was used to check its effects on the biodiesel powered engine. The suitable engine available was having Hemispherical Bowl Piston (HBP). To probe the effects of other CCS on the performance of diesel engine, Cylindrical Bowl Piston (CBP), Toroidal Bowl Piston (TBP) and Toroidal Re-entrant Bowl Piston (RBP) vestibule volume shapes were manufactured keeping ratio of compression same. For 100% replacement of diesel by biodiesel the injection pressures and injection timings tested were in the range of 210 bar to 250 bar and 19°bTDC to 27°bTDC which are based on our previous research works on other biodiesels. But the performance was maximised for 240 bar and 27°bTDC for all CCS which is reported in this paper. Engine variables such as fuel flow rate, brake power, torque, and temperature of exhaust smoke, combustion variables such as rate of heat release (HRR), peak pressure (PP), ignition delay (ID), combustion duration (CD), and exhaust emissions such as smoke opacity, HC, CO, and NOx, were measured. Results obtained with RBP shape and for CROME with 6 number of hole injector concluded in overall ameliorated competence with lesser emission levels of CO, HC and smoke, but NOx was almost same as that of diesel. Also reduced ID, CD and increased PP resulted in decreased burning time loss (BTL) increasing competence. Hence this research work shows that the CROME is also compatible and capable of replacing diesel in a diesel engine efficiently.

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Section: Combustion Attributessupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Effects of Combustion Vestibule Configuration on the Competence, Emissions and Combustion attributes of Direct Injection Diesel Prime Mover Powered with Diesel and Corn Oil Methyl Ester (CROME)

Indudhar

Banapurmath

Rajulu

2019

European Journal of Sustainable Development Research

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“…The piston crown is part of the piston located at the very top of the piston which functions to withstand pressure due to combustion in the combustion chamber [11]. This piston crown is designed with a strong material because the pressure that occurs in the combustion chamber is very large and the surface shape of the piston crown also varies, each with its own characteristics, the following types of surfaces of the piston crown:…”

Section: Piston Crownmentioning

confidence: 99%

“…1. Hemispherical Combustion Chamber (HCC) This piston has a surface that gives a small squish (squish is the angle formed between the piston head and the fuel which aims to direct the combustion gases by pressing the parallel parts facing each other when the piston reaches TDC) which is obtained from several variations in the ratio of the depth to the surface diameter [11]. The HCC piston is shown in figure 2.…”

Section: Piston Crownmentioning

confidence: 99%

Performance and Emission Analysis of Four-Stroke Diesel Engine Single Cylinder on Toroidal Piston Modification with B30 Fuel

Iswantoro

Ariana²,

Luqmananto³

et al. 2022

IJMEIR

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⎯ improvement of the performance of the diesel engine can be done by expanding the combustion chamber. One of the objectives of this research is to obtain optimal piston performance by modifying the piston crown to be 1mm deeper than the standard piston using B30 fuel. This research is also proof of previous research with a simulation that concluded that the performance of a diesel engine using a modified toroidal combustion chamber (TCC) +1mm piston has better performance than a standard piston. This research will analyze the comparison of the performance of a diesel engine using a standard piston and a modified piston on the diesel engine, using an experimental method with B30 biodiesel fuel with engine speed (RPM) variation of 1900 and 2100, also the dummy loads used are 1000, 2000, 3000, and 4000 Watts (W). From the results of the performance tests, it is concluded that the standard piston produces better performance than the modified piston with a very small difference in value in terms of torque, power, and SFOC. The level of NOx emissions produced by the standard RPM 1900 with 1000 W load is 1,483 g/KWh, at a load of 2000 W is 1,011 g/KWh, at a load of 3000 W is 1.375 g/KWh, at a load of 4000 W is 2,372 g/KWh, for standard piston RPM 2100 NOx emission levels produced at 1000 W load is 1,902 g/KWh, at 2000 W load is 1,450 g/KWh, at 3000 W load is 1.368 g/KWh, at 4000 W load is 1,066 g/KWh. The level of NOx emissions produced using a modified piston at 1900 RPM at 1000 W load is 1.865 g/KWh, at 2000 W load is 1.326 g/KWh, at 3000 W load is 1,250 g/KWh, at 4000 W load is 0.857 g/KWh, for RPM 2100 uses a modified piston at a 1000 W load is 1,970 g/KWh, at a 2000 W load is 1,583 g/KWh, at a 3000 W load is 1,465 g/KWh, at a 4000 W load is 1,226 g/KWh. NOx emission levels using standard pistons at RPM 1900 with B30 fuel tend to be smaller at low loads and larger at high loads compared to modified pistons, while NOx emission levels using standard pistons at RPM 2100 fueled by B30 are smaller than using a modified piston.

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“…The study was focused on various methods to increase atomization of the fuel inside the combustion chamber with higher efficiency and purity is exhaust gas. Mahakul et al [16] has also carried more work on modifiedpiston, better results were obtained in terms of high compression ratio which increases the temperature of combustion chamber and also better air-fuel mixing and low emissions for all modified engines than base engine.Sakthisaravanasenthil et al [17] carried experimental work on re-entrance combustion geometry and observed 20% and 24%reduction in HC and CO respectively.While soot particles decreases by 19% and NO x increases by 12% with omega type combustion chamber geometry incompression of HCC witnessed by Bawankar et al [18]. Xiangrong et al [19] Combustion and emission characteristic were investigated by both experimentally analytically, the results shown that for multi swirl combustion chamber, accelerates the fuel/air mixture, enlarges the fuel diffusion space, reduced local fuel rich mixture and decreases the combustion duration with lower fuel consumption and reduced soot emission.Bin Wang et al [20] carried out analytical investigation to optimize the combustion chamber based on reduction of HC and CO emissions and enhancement in combustion efficiency, reduced emission are obtained because of grater tumble flow, greater squish owing to the greater area of piston top terrain in the squish zone largely enhanced the in-cylinder turbulent kinetic energy by deep bowl piston, compared to the baseline piston.…”

Section: Introductionmentioning

confidence: 99%

Effect of combustion geometry on combustion, performance and emission characteristics of CI engine using simarouba oil methyl ester

Kumar¹,

Chandrashekar

Banapurmath

et al. 2018

IOP Conf. Ser.: Mater. Sci. Eng.

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A Study on Effect of Piston Bowl Shape on Engine Performance and Emission Characteristics of a Diesel Engine

Cited by 5 publications

References 7 publications

Effects of Combustion Vestibule Configuration on the Competence, Emissions and Combustion attributes of Direct Injection Diesel Prime Mover Powered with Diesel and Corn Oil Methyl Ester (CROME)

Effects of Combustion Vestibule Configuration on the Competence, Emissions and Combustion attributes of Direct Injection Diesel Prime Mover Powered with Diesel and Corn Oil Methyl Ester (CROME)

Performance and Emission Analysis of Four-Stroke Diesel Engine Single Cylinder on Toroidal Piston Modification with B30 Fuel

Effect of combustion geometry on combustion, performance and emission characteristics of CI engine using simarouba oil methyl ester

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