Study on Performance and Exhaust Gas Characteristics of Directly Injected CNG Engine

Lee, S. W.; Baik, Doo-Sung; Rogers, Thomas W.; Petersen, Phred

doi:10.14257/ijbsbt.2014.6.2.18

Cited by 7 publications

(3 citation statements)

References 12 publications

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“…The most advanced and common systems of gas-cylinder equipment (GSE) 4th and 5th generation of the famous European producers basically sends the gas to the reducer in the compressed or liquefied state, but after the reducer gas is in the gaseous state to the ramp with fuel nozzle [3]. In practice, there are ways of feeding the gas directly into the combustion chamber but in gaseous form, mostly, the use of associated petroleum gases (propane and (or) butane), [4,6]. Flow directly into the combustion chamber of the methane currently does not exist, even in gaseous form.…”

Section: Methodsmentioning

confidence: 99%

Improving the Supply System Gas Engine to Improve Energy Efficiency

2021

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The paper presents the main advantages and disadvantages of standard fuels in comparison with alternative fuels of methane series used in internal combustion engines. Particular attention in the article is given to the study of the heat transfer parameters of the calculated volume in the fuel tank filled with liquefied methane with thermal insulation, as well as methane outflow in special round tubes to transport gas in the liquid phase to the atomizer of the gas injector. Variants of numerical modeling of phase transitions of the heterogeneous system inside the tank are presented, as the calculated volume and flow of a two-phase flow of liquefied methane in tubes in the horizontal plane, taking into account the operating parameters of the elements of the fuel supply system.

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Section: Methodsmentioning

confidence: 99%

Improving the Supply System Gas Engine to Improve Energy Efficiency

2021

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“…Among these systems, LNT and SCR system are actively developed for increasing NOx reduction efficiency. [2][3] This research analyzed SCR system for satisfying exhaust emission regulations. [4][5] 2 Analysis Method…”

Section: Introductionmentioning

confidence: 99%

Flow Analysis in Exhaust System according to Blade Model of Mixer

Choe¹,

Kim²,

Kim³

et al. 2016

Advanced Science and Technology Letters

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Abstract. This research analyzes the influence of UREA SCR System's mixer. The simplified modeling was facilitated to interpret current exhaust system. ANSYS of commercial program was utilized to analyze the fluid effects. Parameters were set up of four variable at 1,000rpm from 1,000rpm to 4,000rpm and three models were used for the analysis. Low pressure was measured at the end-central part of the mixer since the pressure is distributed from the central axis and towards the outside. By assessing the degree of uniformity, the uniformity expanded faster at high RPM and in low RPM, the flux itself is low so the uniformity gradually increase as it reached the latter part.

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“…Therefore, this study mainly focuses on the mixer in a SCR system to maximize the reduction effect on noxious exhaust gas. [8][9] This study was conducted using a commercial program ANSYS to optimize the catalyst location according to the analysis on fluid effect and uniformity of the mixer in a SCR system. Fig.…”

Section: Introductionmentioning

confidence: 99%

Study on the flow effects of an exhaust system by mixer modeling

Choe¹,

Kim²,

Choi³

2016

ces

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This study focused on the mixer used in a SCR System, a technology being developed to conform to exhaust gas regulations which have recently become stricter. This study includes an analysis on fluid effect at each mixer to optimize the location of the catalyst and optimized modeling to interpret the current condition of the exhaust system. ANASYS of commercial program was utilized to analyze the fluid effects. Parameters were set up of four variable at 1,000rpm from 1,000rpm to 4,000rpm and three models were used for the analysis. The maximum pressure distribution was measured at mixer 2 and total pressure distribution was measured at mixer 2 as the largest amount, followed by mixer 1 and mixer 3 respectively. Low pressure was measured at the end-central part of the mixer since the pressure is distributed from the central axis and towards the outside. The largest velocity distributional area, 210m/s, was measured at mixer 2 during analysis by velocity. A low velocity region was captured at the end-central part of the mixer since flow was created towards the outside. The analysis showed that mixer 1 was the most effective in pressure distribution and uniformity. 944 Mun-seok Choe et al.

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Study on Performance and Exhaust Gas Characteristics of Directly Injected CNG Engine

Cited by 7 publications

References 12 publications

Improving the Supply System Gas Engine to Improve Energy Efficiency

Improving the Supply System Gas Engine to Improve Energy Efficiency

Flow Analysis in Exhaust System according to Blade Model of Mixer

Study on the flow effects of an exhaust system by mixer modeling

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