Study on Analytic of Opening Angles for Muffler Variable Valve of Automobile

Park, Chungyeol; Kim, Kwonse; Kim, Jong‐Il; Choi, Dooseuk

doi:10.7467/ksae.2014.22.2.190

Cited by 3 publications

(2 citation statements)

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“…However, for LNT, total fuel efficiency of a vehicle tends to drop since it uses the fuel as a reducing agent. [4][5][6] Components of the SCR system includes an injector to spray urea solution, urea tank, urea pump module, SCR Catalyst, and mixer. Even though the cost of automobiles increases when utilizing the SCR system, due to a large number of components needed, it clearly presents advantages in better fuel efficiency compared to vehicles with LNT since it does not use fuel as a reducing agent.…”

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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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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“…[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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