Diesel Engine Model Development and Experiments

Rutland, Christopher J.; Ayoub, Nabil S.; Han, Zhiyu; Hampson, Gregory J.; Kong, Song‐Charng; Mather, D. K.; Montgomery, David T.; Musculus, Mark P.; Patterson, Mark; Pierpont, D. A.; Ricart, Laura M.; Stephenson, Philip; Reitz, Rolf D.

doi:10.4271/951200

Cited by 21 publications

(9 citation statements)

References 37 publications

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“…The results indicate that the comparisons between present simulation and measured [20] are relatively in good agreement, thus present simulation is reliable to predict the engine performance near real conditions. In this section for validating the present work with experimental results [20], tetradecane is used as the injected fuel.…”

Section: Model Validity In Figures 3 and 4 A Comparison Between Pressupporting

confidence: 66%

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The Effect of Different Injection Strategies and Intake Conditions on the Emissions Characteristics in a Diesel Engine

Gorji-Bandpy

Soleimani

Ganji

2009

International Journal of Vehicular Technology

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Choosing various injection strategies and intake conditions are potentially effective techniques to reduce exhaust emission from diesel engines. The purpose of this study is to investigate the effect of different spray incoming angles, different spray cone angles, different injection timing, and different intake temperatures together with emission characteristics on a heavy duty diesel engine via three dimensional computational fluid dynamics (CFD) procedures. Furthermore the effect of multiple injector combustion chamber and its benefits in pollutant reduction is studied. The principal results show the significant differences in soot and generation during combustion between above different strategies.

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Section: Model Validity In Figures 3 and 4 A Comparison Between Pressupporting

confidence: 66%

“…Figure 2 shows the 60 • -sector computational grid at (Top Dead Center) TDC. [20] for incylinder pressure and rate of heat release was first conducted. This was done to ensure that the prediction made with this work is trustworthy.…”

Section: Simulation Enginementioning

confidence: 99%

The Effect of Different Injection Strategies and Intake Conditions on the Emissions Characteristics in a Diesel Engine

Gorji-Bandpy

Soleimani

Ganji

2009

International Journal of Vehicular Technology

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“…The high levels of swirl combined with squish generate the turbulence and a toroidal vortex produced in the bowl and both of them contributes to mixing fuel and enhancing combustion [3]. Most researchers [25][26][27][28][29][47][48][49][50] agreed that to obtain optimum design for a combustion chamber in SI and diesel engines, squish must be combined with other flows such as tumble and swirl. Zolver et al [48] studied the impact of piston bowl geometry on flow characteristics during intake, compression, injection and combustion processes in a turbocharged DI diesel engine using Kiva-Multi-Block code.…”

Section: Squish Flowmentioning

confidence: 99%

Influence of swirl, tumble and squish flows on combustion characteristics and emissions in internal combustion engine-review

Kaplan

2019

International Journal of Automotive Engineering and Technologies

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This study gives an overview of available literature on flow patterns such as swirl, tumble and squish in internal combustion engines and their impacts of turbulence enhancement, combustion efficiency and emission reduction. Characteristics of in-cylinder flows are summarized. Different design approaches to generate these flows such as directed ports, helical ports, valve shrouding and masking, modifying piston surface, flow blockages and vanes are described. How turbulence produced by swirl, tumble and squish flows are discussed. Effects of the organized flows on combustion parameters and exhaust emission are outlined. This review reveals that the recent investigations on the swirl, tumble and squish flows are generally related to improving in-cylinder turbulence. Thus, more experimental and numerical studies including the impacts of this organized flows on turbulence production, combustion behavior and pollutant formation inside the cylinder are needed.

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“…Both the injection pressure and duration are controlled via ECU to permit precise adjustment for injection rate and total amount of fuel injected during the cycle. The system is applied on two stroke engines [2] as well as in conventional four stroke engines [3], in Diesel engines [4][5][6] alongside with gasoline direct injection "GDI" [7][8][9] albeit it used in Diesel engines earlier. Numerous investigations were carried out to unveil the characteristics of engines when running with such systems.…”

Section: Introductionmentioning

confidence: 99%

Modeling Common Rail Fuel Injection System in Diesel Engines

Wilson¹

2015

ERJ. Engineering Research Journal

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In the present work, a mathematical model is developed to simulate and predict the performance of electronically controlled fuel injection system for diesel engines at different operating conditions. The fuel system employs common rail techniques which characterized by symmetrical fuel injection for all engine cylinders and injection pressure beyond 1 k bar. The resultant spray configuration and the availability of multiple injections each cycle leads to achieve significant improvement in combustion efficiency and emissions. The mathematical model introduced in the present work includes the simulation of control signals from electronic control unit "ECU". The model considered the injection timing and firing order when dealing with multiple injectors. Besides, the model includes mathematical simulation of electromagnet power solenoid valves, kinematics of pump plungers due to cam rotation, dynamics of valves and needles motion and finally the flow of fuel through the entire system elements taking into consideration the compressibility effect. The results of the present model are compared with experimental and the available mathematical models to validate the present model. Comparison shows fair agreement. The model shows the great importance of solenoid response in injection timing. The model is proven to be a good tool for exploring the capability of electronically controlled common rail injection system to perform different injection strategies as well as its ability to run with different fuel types. The model can serve also as sub-model in sophisticated CFD codes to simulate realistic combustion process in Diesel engines.

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Diesel Engine Model Development and Experiments

Cited by 21 publications

References 37 publications

The Effect of Different Injection Strategies and Intake Conditions on the Emissions Characteristics in a Diesel Engine

The Effect of Different Injection Strategies and Intake Conditions on the Emissions Characteristics in a Diesel Engine

Influence of swirl, tumble and squish flows on combustion characteristics and emissions in internal combustion engine-review

Modeling Common Rail Fuel Injection System in Diesel Engines

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