Numerical Simulation of Port-Valve-Cylinder Flow in Reciprocating Engines

Aita, Samir; Tabbal, A.; Munck, G.; Fujiwara, Kazuo; Hongoh, H.; Tamura, Ema; Obana, S.

doi:10.4271/900820

Cited by 21 publications

(1 citation statement)

References 5 publications

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“…With the development of software engineering and computer technology, simulation programs started to be used. Thanks to the simulation programs, the analysis results replace the experimental analysis by giving results much closer to the reality [3].…”

Section: Introductionmentioning

confidence: 99%

Development Of the Software Program That Can Account the Combustion, Emission and Engine Performance Values of Internal Combustion Engines

YAZAR

Demır

2022

EJT

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In this study, a simulation program was developed that can calculate combustion, emission and engine performance values depended on variable parameters for internal combustion engines by mathematical modelling. This simulation program was created with the Java programming language. Graphical user interface (GUI) was used in this simulation program. With the simulation program created, it can calculate many values such as in-cylinder pressure, temperature, gas amounts generated as a result of combustion, power, torque, specific fuel consumption, both in spark ignition engines and compression ignition engines. This simulation program presents the results both numerically and graphically. The calculations are obtained at every crankshaft angle at 0.25 ˚ intervals. With this simulation program, analyses were made in different excess air coefficients (0.9-1-1.1-1.2) and the effects of in-cylinder pressure, temperature, mass ratios of gas components and engine performance values were compared. According to the simulation results, as the excess air coefficient increases, the temperature and pressure values decrease. 〖CO〗_2 and NO mass ratios decrease as the excess air coefficient increases in case the excess air coefficient is greater than 1. H_2 O mass ratio increased as the excess air coefficient increased.

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Section: Introductionmentioning

confidence: 99%

Development Of the Software Program That Can Account the Combustion, Emission and Engine Performance Values of Internal Combustion Engines

YAZAR

Demır

2022

EJT

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The effects of swirl and tumble on combustion in spark-ignition engines

Hill

Zhang

1994

Progress in Energy and Combustion Science

126

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Numerical Analysis of Unsteady Exhaust Gas Flow and Its Application for Lambda Control Improvement

Yoshizawa

Mori

Arai

et al. 2003

Journal of Engineering for Gas Turbines and Power

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A multidimensional computational fluid dynamics (CFD) tool has been applied to analyze the exhaust system of a gasoline engine. Since gas flow in the exhaust manifold is affected by exhaust pulsations, prediction methods based on steady flow are not able to predict gas flow precisely enough. Therefore, a new multidimensional calculation method, called pulsation flow calculation, has been developed. A one-dimensional gas exchange simulation and a three-dimensional exhaust gas flow calculation are combined to simulate gas flow pulsations caused by the gas exchange process. Predicted gas flow in the exhaust manifold agreed with the experimental data. With the aim of reducing emissions, the pulsation flow calculation method has been applied to improve lambda feedback control using an oxygen sensor. The factors governing sensor sensitivity to the exhaust gas from each cylinder were clarified. The possibility of selecting the oxygen sensor location in the exhaust manifold on the basis of calculations was proved. The effect of an exhaust manifold with equal-length cylinder runners on achieving uniform sensor sensitivities was made clear. In addition, a new lambda feedback control method for an exhaust manifold with different-length cylinder runners is proposed.

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Numerical Simulation of Port-Valve-Cylinder Flow in Reciprocating Engines

Cited by 21 publications

References 5 publications

Development Of the Software Program That Can Account the Combustion, Emission and Engine Performance Values of Internal Combustion Engines

Development Of the Software Program That Can Account the Combustion, Emission and Engine Performance Values of Internal Combustion Engines

The effects of swirl and tumble on combustion in spark-ignition engines

Numerical Analysis of Unsteady Exhaust Gas Flow and Its Application for Lambda Control Improvement

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