A Numerical Simulation Study on Improving the Thermal Efficiency of a Spark Ignited Engine --- Part 1: Modeling of a Spark Ignited Engine Combustion to Predict Engine Performance Considering Flame Propagation, Knock, and Combustion Chamber Wall ---

2014 ◽  
Vol 7 (1) ◽  
pp. 96-105 ◽  
Author(s):  
Akira Kikusato ◽  
Kusaka Jin ◽  
Yasuhiro Daisho
Keyword(s):  
Numerical Simulation ◽  
Combustion Chamber ◽  
Flame Propagation ◽  
Simulation Study ◽  
Thermal Efficiency ◽  
Engine Performance ◽  
Chamber Wall ◽  
Engine Part ◽  
Engine Combustion

Numerical simulation of variable thrust engine combustion chamber

1992 ◽  
Author(s):  
TSUNG JIANG ◽  
WEI-TANG CHIANG ◽  
SHYH-DIHNG JANG
Keyword(s):  
Numerical Simulation ◽  
Combustion Chamber ◽  
Engine Combustion

Analysis of Thermal Efficiency in a Hydrogen Premixed Spark Ignition Engine

1999 ◽  
Author(s):  
Toshio Shudo ◽  
Yasuo Nakajima ◽  
Takayuki Futakuchi
Keyword(s):  
Combustion Chamber ◽  
Thermal Efficiency ◽  
Internal Combustion Engines ◽  
Combustion Process ◽  
Methane Combustion ◽  
Spark Ignition ◽  
Hydrogen Combustion ◽  
Spark Ignition Engine ◽  
Chamber Wall ◽  
Flame Velocity

Abstract Hydrogen has higher flame velocity and smaller quenching distance than hydrocarbon fuels, and is supposed to have special characteristics in combustion process of internal combustion engines. In this research, contributors to thermal efficiency in a hydrogen premixed spark ignition engine were analyzed and compared with methane combustion. Results showed hydrogen combustion had higher cooling loss to combustion chamber wall, and thermal efficiency of hydrogen combustion was mainly dominated by both cooling loss to combustion chamber wall and degree of constant volume combustion.

scholarly journals Selecting a k-ε turbulence model for investigating n-decane combustion in a diesel engine combustion chamber

2019 ◽  
Vol 7 (2) ◽  
pp. 80-87
Author(s):  
Andrii Avramenko
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
Combustion Chamber ◽  
Turbulent Flows ◽  
Turbulence Model ◽  
Turbulence Models ◽  
Toxic Substances ◽  
Engine Combustion ◽  
Experimental Findings ◽  
The Impact

The results of a comparative numerical simulation of combustion and formation of toxic substances in a diesel engine combustion chamber are given. Experimental findings were used to identify the mathematical models. The impact of the standard, RNG and realizable k-ε turbulence models on the accuracy of numerical simulation of combustion and the formation of toxic substances was studied. The realizable k-ε turbulence model was shown to provide a closer agreement of computational and experimental data during simulation of the diesel engine process when turbulent flows are described.

Numerical simulation of fuel ignition the scramjet engine combustion chamber

2021 ◽  
Vol 13 (4) ◽  
pp. 148-154
Author(s):  
Alexander Molchanov ◽  
Dmitry Gribinenko ◽  
Dmitry Yanyshev
Keyword(s):  
Numerical Simulation ◽  
Combustion Chamber ◽  
Engine Combustion ◽  
Scramjet Engine

scholarly journals Effect of Pre-Combustion Chamber Nozzle Parameters on the Performance of a Marine 2-Stroke Dual Fuel Engine

Processes ◽  
2019 ◽  
Vol 7 (12) ◽  
pp. 876 ◽  
Author(s):  
Hao Guo ◽  
Song Zhou ◽  
Majed Shreka ◽  
Yongming Feng
Keyword(s):  
Combustion Chamber ◽  
Flame Propagation ◽  
High Efficiency ◽  
Great Influence ◽  
Engine Performance ◽  
Propagation Speed ◽  
Nozzle Diameter ◽  
Dual Fuel ◽  
Shipping Industry ◽  
Reduce Emissions

In recent years and with the increasing rigor of the International Maritime Organization (IMO) emission regulations, the shipping industry has focused more on environment-friendly and efficient power. Low-pressure dual-fuel (LP-DF) engine technology with high efficiency and good emissions has become a promising solution in the development of marine engines. This engine often uses pre-combustion chamber (PCC) to ignite natural gas due to its higher ignition energy. In this paper, a parametric study of the LP-DF engine was proceeded to investigate the design scheme of the PCC. The effect of PCC parameters on engine performance and emissions were studied from two aspects: PCC nozzle diameter and PCC nozzle angle. The results showed that the PCC nozzle diameter affected the propagation of the flame in the combustion chamber. Moreover, suitable PCC nozzle diameters helped to improve flame propagation stability and engine performance and reduce emissions. Furthermore, the angle of the PCC nozzle had a great influence on flame propagation direction, which affected the flame propagation speed and thus the occurrence of knocking. Finally, optimizing the angle of the PCC nozzle was beneficial to the organization of the in-cylinder combustion.

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