Simultaneous Reduction of NOx and PM Emissions through Low Temperature EGR Cooling in Diesel Engines

Mehrotra, Aayush; Juttu, Simhachalam; Ravishankar, Siva Subramanian; Rambhaji, Ghodke Pundlik; Suryawanshi, J. G.

doi:10.4271/2014-01-2803

Cited by 4 publications

(3 citation statements)

References 9 publications

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“…To close a system of equations (1), (2), (5) and 6, the generalized Bernoulli equation is used [21]:…”

Section: Resultsmentioning

confidence: 99%

“…Analysis of the main factors affecting the formation of harmful substances in diesel engines has shown that due to the peculiarities of the working process occurring in them, a decrease in emissions of incomplete combustion products, carbon oxides, hydrocarbons and harmful particles is accompanied by an increase in emissions of nitrogen oxides and by contrast [1,2,4,5,6]. Therefore, to ensure that diesel meets current and future standards for harmful emissions, exhaust gas recirculation and a catalytic method for their recovery are widely used to reduce nitrogen oxide emissions [7,8,9,10,11,12].…”

Section: Introductionmentioning

confidence: 99%

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On the issue of reducing the negative impact of nitrogen oxides in the system recirculation of diesel exhaust gases on applying the vortex effect

2020

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The problem of negative impact on the environment of motor transport is one of the most fundamental in the complex of global problems. The constant increase in the number of cars with internal combustion engines encourages the search for methods and ways to reduce the volume of negative impulses. The operation of heat engines is accompanied by significant emissions of gaseous harmful substances into the atmosphere, i.e. nitrogen oxides, carbon monoxide, hydrocarbons, as well as solid particles, including soot. The solution to this problem should be implemented within the framework of a systematic approach. To do this, it is necessary to combine the study of technical, economic, and organizational approaches to the organization of the exhaust gas disposal process. To date, there is a significant methodological base in the field of organizational and economic decisions. The article discusses various methods of cleaning exhaust gases of piston engines, their advantages and disadvantages are noted. The method of processing using ammonia is widely known. It is noted that a catalytic method for reducing nitrogen oxides using ammonia is quite economical. However, the optimal temperature range at which nitrogen oxides are reduced is rather narrow. To solve this problem, it is proposed to use the vortex effect in the exhaust system. The efficiency of using a vortex gas recirculation pipe is due to its significant influence on the thermal gasdynamic processes occurring in the exhaust system. Using the principles of non-equilibrium thermodynamics allows us to take into account dissipative processes when establishing the relationship of fuel and economic indicators of internal combustion engines with thermodynamic parameters. This significantly increases the accuracy of calculations and allows you to develop measures to reduce the level of negative impact on the environment.

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“…To close a system of equations (1), (2), (5) and 6, the generalized Bernoulli equation is used [21]:…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

On the issue of reducing the negative impact of nitrogen oxides in the system recirculation of diesel exhaust gases on applying the vortex effect

2020

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“…Hence the engine can take more amount of fresh air allowing higher amount of EGR percentage in the fresh air. Low temperature exhaust gas (EGR) was tested in Sports utility vehicle (SUV) engine by Mehrotra et al [12]. Their research findings shown that it is possible to supply more heat by EGR technique due to the increase in capacity of intake air by the engine.…”

Section: Introductionmentioning

confidence: 99%

Controlling Nox in Modified High Pressure Split Injection Single Cylinder Diesel Engine with EGR-A Mathematical Approach

Balaji,

Yeditha,

Premkumar

et al. 2023

IJHT

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A single cylinder low powered diesel engine of 3.5kW was modified to run on Common rail direct injection high pressure split injection system. This modified engine was tested to run on the neat diesel with ultra-cooled exhaust gas recirculation. The adjustable working parameters i.e., injection pressures 200bar, 230bar, 250bar, 300bar and 350bar, retarded injection -11°, split injection -54° and -11°. After Top dead center position, Exhaust gas recirculation flow rates 5% & 10% respectively are tested on this engine under two typical operating conditions of ¼ full load of 0.875kW and ¾ full load of 2.625kW respectively. Single factor and multifactor orthogonal quadratic regression analysis has been carried to determine the effect of these 4 working parameters on engine emissions NOx. The mathematical equations characterizing the relationship between these 4 operating variables are formed. The equation of the NOx and noise was from the orthogonal regressive test under 1/4 Full load and ¾ Full load conditions was set as the objective function and the ranges of these 4 working variables are given as the constraint condition. Models of non-linear programming were then formulated and solved by using statistical analytical software. Test results showed that 10% Single Injection generates NOx of 194.87 parts per million while 10% Multiple fuel injection generates 199 while the minimum NOx that can be produced is 134.27.

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Effect of cooled EGR on modified light duty diesel engine for combustion, performance and emissions under high pressure split injection strategies

Edara

Murthy

Srinivas

et al. 2018

Case Studies in Thermal Engineering

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Simultaneous Reduction of NOx and PM Emissions through Low Temperature EGR Cooling in Diesel Engines

Cited by 4 publications

References 9 publications

On the issue of reducing the negative impact of nitrogen oxides in the system recirculation of diesel exhaust gases on applying the vortex effect

On the issue of reducing the negative impact of nitrogen oxides in the system recirculation of diesel exhaust gases on applying the vortex effect

Controlling Nox in Modified High Pressure Split Injection Single Cylinder Diesel Engine with EGR-A Mathematical Approach

Effect of cooled EGR on modified light duty diesel engine for combustion, performance and emissions under high pressure split injection strategies

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