Numerical study of the effect of combustion chamber structure on scavenging process in a boosted GDI engine

Gong, Zhen; Shao, Xiaowei; Tao, Changfa; Zhuang, Yuan

doi:10.1016/j.energy.2018.11.080

Cited by 12 publications

(4 citation statements)

References 12 publications

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“…A smaller engine architecture implies higher engine boosting if the performance is attempted to be kept. Consequently, the turbocharger operation and its interaction with the rest of the engine hardware become more relevant for engine efficiency [12]. New turbocharger technologies in the context of series SI engines become potential technical solutions when improving nowadays' fuel consumption and power figures.…”

Section: Nomenclaturementioning

confidence: 99%

Methodological analysis of variable geometry turbine technology impact on the performance of highly downsized spark-ignition engines

Serrano

Morena

Gómez-Vilanova

et al. 2021

Energy

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Section: Nomenclaturementioning

confidence: 99%

Methodological analysis of variable geometry turbine technology impact on the performance of highly downsized spark-ignition engines

Serrano

Morena

Gómez-Vilanova

et al. 2021

Energy

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“…Employing cost-effective and straightforward techniques for strategic airflow management can enhance spray spatial distribution, improve air-fuel mixture formation, and facilitate combustion within the combustion chamber [4,5]. This approach is important in reducing fuel consumption and emissions for low-power non-road diesel engines [6].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation on the Spray Angle of the Dual-layer Hole Nozzle in a Partition Combustion System of the Diesel Engine

Lu Hongkun,

Muhamad Mat Noor,

Li Li

et al. 2024

ARNHT

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To study the effect of the spray angles of the dual-layer hole nozzle on the combustion and emissions performance in the partition combustion system, the in-cylinder spray, mixture formation and combustion processes of the new combustion system were simulated and investigated using AVL FIRE software. The results show that, compared with the variation of the lower-layer spray angles, the change of the upper-layer spray angles has a great influence on the instantaneous heat release rate. The increasing spray angles of the lower-layer holes lead to reduced peak values of the heat release rate in the cylinder. In all the spray angle cases, the first fire area of the cylinder is in the B zone of the combustion chamber. Compared with lower-layer spray angle, the upper-layer spray angle has a greater impact on the airflow disturbance in the combustion chamber. Appropriately increasing the upper-layer spray angle facilitates the mixing of fuel and air in the combustion chamber and reduces the unburnt fuel equivalence ratio. When the spray angles of the upper- and lower-layer holes are 157° and 112°, respectively, the combustion indicates power has the largest value of 12.18 kW. At the same time, the Soot emission is also the smallest, with a value of 0.52 g/kW·h.

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“…The global warming crisis and the shortage of fossil fuels prompted scientists and research institutions to develop new energy conversion devices and environmental friendly fuel power conversion devices. 2, 3 Many scholars are committed to researching engine structure types with higher energy efficiency.…”

Section: Introducingmentioning

confidence: 99%

Simulation analysis and performance optimization of the combustion process of the opposed cam piston engine

Tang

Zhang

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Combining the structural features of cam engines and opposed engines, a kind of opposed cam piston engine is designed, in which a kind of variable sine curves family applied to the cam working surface. Based on the structure of this engine, a thermodynamic zero-dimensional model of the working cycle was established, and the accuracy of it was verified by the numerical simulation model utilizing the engine simulation software AVL BOOST. Based on the zero-dimensional model, the changes in the pressure, temperature, and quality of the working fluid in the cylinder under different cam profiles were calculated, and on this basis, the engine’s thermal efficiency, mechanical efficiency, overall machine efficiency, and power per liter were solved. Compared with common civil vehicle engines, OCPE has higher power per liter and has better economic performance and power performance.

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Numerical study of the effect of combustion chamber structure on scavenging process in a boosted GDI engine

Cited by 12 publications

References 12 publications

Methodological analysis of variable geometry turbine technology impact on the performance of highly downsized spark-ignition engines

Methodological analysis of variable geometry turbine technology impact on the performance of highly downsized spark-ignition engines

Numerical Simulation on the Spray Angle of the Dual-layer Hole Nozzle in a Partition Combustion System of the Diesel Engine

Simulation analysis and performance optimization of the combustion process of the opposed cam piston engine

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