• 제목/요약/키워드: DPF, 매연여과장치

검색결과 42건 처리시간 0.024초

Continuously Regenerating DPF장착에 따른 대형디젤기관의 기관성능 및 배출가스특성에 관한 연구 (A Study on Exhaust Emission and Engine Performance Characteristics of Heavy-Duty Diesel Engine with Continuously Regenerating DPF)

  • 나완용;오상기
    • 동력기계공학회지
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    • 제10권2호
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    • pp.11-15
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    • 2006
  • The increasing numbers of automobiles keep causing air-pollution problems worse than ever. Nowadays, research on catalyst converter and filter trap as a modern technology is very active because PM is designated as a major cancer material and stringent regulations on this are necessary and required. This research emphasized on the development of Continuously Regenerating DPF technology which was the best particulate matters removing technology of current existing technology because of its superior comparability and high applicability. This experimental study has been conducted with equipped and unequipped a Continuously Regenerating DPF ona displacement 7,000cc diesel engine and compared in terms of engine performance and emission. To measure the emission, D-13 mode is applied and measured quantities of the exhaust gases, particularly in CO, HC, PM, and NOx. Therefore, this research is focused on engine performance and characteristics on exhaust emissions with the application of a Continuously Regenerating DPF in a heavy-duty diesel vehicle.

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포집량에 따른 p-DPF의 정화효율 및 BPT 특성에 관한 실험적 연구 (An Experimental Study on Filtration Efficiency and BPT Characteristics by Soot Loading in Partial-diesel Particulate Filter)

  • 김태권;김영조;하지수;이춘범;오광철
    • 한국자동차공학회논문집
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    • 제19권6호
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    • pp.10-16
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    • 2011
  • Diesel particulate filter is being recognized that it is the most effective technologies to reduce particulate matter. In this study, to determine the characteristics of the cell-open-type pDPF, we employed p-DPF to exhaust gas tunnel of diesel engine and surveyed filtration efficiency and BPT on the basis of PM which is exhausted from engine. In this paper the soot loading mass in DPF can be predicted from increase of differential pressure of DPF so that we can measure filtration efficiency and Balance Point Temperature (BPT) by soot loading mass. The result of the research showed that the filtration efficiency is 65% in ESC mode with 0.7mm hole diameter. For the results of the characteristics of filtration efficiency and BPT according to mass_exh, we found that if mass_exh increases, filtration efficiency increases and BPT decreases.

Fe 첨가제를 적용한 금속분말 필터의 포집 및 재생 특성에 관한 연구 (A Study on the Performance of the Diesel Particulate Filter made of Porous Metal with Fe-based Fuel Additive)

  • 박상현;전광민;조규백;정용일;박용렬
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2001년도 춘계학술대회논문집D
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    • pp.802-806
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    • 2001
  • Diesel particulate trap is the most reliable system to reduce the particulate matters from diesel engine. Filter is the core component of DPF and ceramic monolith type is dominantly used, which is expensive and fragile relatively at thermal shock. Porous metal filter, which has superior thermal characteristics and low cost, was tested in order to analyze the regeneration performance by using with ferrocene additive. This filter showed the 72% filtration efficiency, additives itself diminished 48% of PM from engine out emission, and final PM reduction ratio of 89% was achieved by DPF system with D-13 test mode.

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DPF의 유동특성에 관한 과도해석 연구 (Study on Transient Analysis for Flow Characteristics in DPF)

  • 신동원;윤천석
    • 한국자동차공학회논문집
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    • 제18권1호
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    • pp.131-138
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    • 2010
  • Because real flow of engine exhaust is very hot and highly transient, it may cause thermal and inertial loads on catalyzed filters in DPF. Transient and detailed flow and thermal simulations are necessary in this field. To assess the importance of time dependent phenomena, typical cone-type configuration such as an underbody DPF is selected for steady and transient analysis. User defined functions of FLUENT by sinusoidal inlet velocities are written and integrated with main solver for realistic simulation. Also, 4-cylinder and 6-cylinder engines for 3,000 L class are considered for the dynamic exhaust effect of engine type. Key parameters to understanding of catalyst performance and durability issues such as flow uniformity index and peak velocity are investigated. Also, pressure drop for engine power are considered. From the simulation results for three different cases, proper approach is recommended.

부압을 이용한 배기 흡입형 매연여과장치에 대한 실험적 연구 (An Experimental Study on the Smoke Filtration System of Suction Type of Exhaustic Gas using Vaccum)

  • 이한성;기시우;고대권
    • 동력기계공학회지
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    • 제15권6호
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    • pp.16-21
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    • 2011
  • Over the past years, many research works have been carried out to investigate the factors which govern the performance of diesel engine. The air pollutant emission from the diesel engine is still a significant environmental concern in many countries. In the present study, new system of smoke filtration of diesel engine is proposed. This new system is using vacuum equipment and filter for capture smoke. To verification new system experiments are performed at diesel vehicle and engine dynamometer. As a result it is founded that smoke is decreased of 67% at vehicle test and decrease of 45.2% at full load condition of engine dynamometer test.

Euro 5 경유 대형트럭의 유해대기오염물질 배출특성 (Emission Characteristics of Hazardous Air Pollutants from Diesel Heavy duty Trucks for Euro 5)

  • 홍희경;문선희;서석준;김정화;정성운;정택호;홍유덕;성기재;김선문
    • 한국분무공학회지
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    • 제23권2호
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    • pp.74-80
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    • 2018
  • Emission characteristics of regulated pollutants (CO, NOx, HC and PM) and hazardous air pollutants (HAPs) from diesel heavy duty trucks equipped with EGR+pDPF and SCR for Euro 5 emission standards were investigated using a chassis dynamometer. In the case of regulated pollutants, diesel heavy duty trucks with EGR+pDPF emitted 79% less CO than those with SCR. Also, those with the SCR emitted 36% less NOx than those with the EGR+pDPF. The results of VOCs have show that alkanes emissions for heavy duty trucks with the EGR+pDPF and the SCR have been higher than alkenes, cycloalkanes and aromatics. In the case of individual VOCs, the highest of propene emissions for 11.3~16.1% occupied. For aromatics group, benzene emissions are the highest percentage for 4.4~15.5%. In the future, the results of present study will provide basic data to set up HAPs emissions inventory for mobile source.

후처리 장치에 의한 디젤엔진 배출가스의 미세 입자 입경분포 변화 (Influence of Aftertreatment System on the Size Distribution of Diesel Exhaust Particulate Matter)

  • 권순박;김민철;이규원;류정호;엄명도;김종춘;정일룩
    • 한국자동차공학회논문집
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    • 제7권7호
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    • pp.113-121
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    • 1999
  • Diesel particulate matter is known to be one of the major harmful emissions produced by diesel engines. Diesel particulates are subject to diesel emission regulations and have lately become the focus in the diesel emission control technology. Thus, the aftertreatment system is adopted at the diesel engine exhaust to reduce the particulate emission. Although this benefit is recognized, it is not clear how the aftertreatment system influences quantitatively the particle size distribution distribution. In this study, the particle size distributions of diesel exhaust were measured using the scanning mobility particle sizer with and without the aftertreatment system. There results showed that the diesel particulate filter and plasm system reduced the number of emitted particles by more than 90% and about 80% respectivley in the particle size range of 20nm∼600nm. On the other hand no significant effect of the diesel oxidation catalyst on the particle number concentration was detected.

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자연재생방식 DPF시스템 부착 경유승용차량의 PM재생 특성 연구 (A Study on PM Regeneration Characteristics of Diesel Passenger Vehicle with Passive Regeneration DPF System)

  • 이진욱;조규백;김홍석;정용일
    • 대한기계학회논문집B
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    • 제31권2호
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    • pp.188-194
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    • 2007
  • New diesel engines equipped with common-rail injection systems and advanced engine management control allow drastic decreases in the production of particulate matters and nitrogen oxides with a significant advantage in terms of the fuel consumption and $CO_2$ emissions. Nevertheless, the contribution of exhaust gas after treatment in the ultra low emission vehicles conception has become unavoidable today. Recently the passive type DPF(Diesel Particulate Filter Trap) system for diesel passenger vehicle has been manufactured into mass production from a French automotive maker since the year of 2000. This passive DPF system fully relies on the catalytic effects from additives blended into the diesel fuel and additives injected into the DPF system. In this study, the effects of PM regeneration in the commercial diesel passenger vehicle with the passive type DPF system were investigated in chassis dynamometer CVS(constant volume sampler)-75 mode. As shown in this experimental results, the DPF regeneration was observed at temperature as low as $350^{\circ}C$. And the engine-controlled the DPF regeneration founded to be one of the most promising regeneration technologies. Moreover, the durability of this DPF system was evaluated with a season weather in terms of the differential pressure and exhaust gas temperature traces from a road test during the total mileage of 80,000km.

기계식 부압발생장치를 이용한 매연여과장치의 성능비교 (Performance Comparison of Soot Filtration Apparatus Using a Mechanical Negative Pressure Generating Device)

  • 이한성;김경현;정석호;고대권
    • 동력기계공학회지
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    • 제19권1호
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    • pp.13-18
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    • 2015
  • Over the past years, many research works have been carried out to investigate the factors which govern the performance of diesel engines. The air pollutant emissions from the diesel engines are still significant concerns environmentally in many countries. In the present study, a novel smoke filtration system of diesel engine is proposed. This novel system is composed of filtering elements and vacuum pump driven by exhaust gases emitted from engine cylinders for capturing smoke. In order to verify the excellency of the novel filtration system, the differential pressure across the filtration system is investigated experimentally comparing with other systems which are used commercially in diesel vehicles. As a result it is founded that the differential pressure of the novel system is the smallest among them.

대형디젤기관에서 연속재생방식 PM저감장치장착에 따른 유동 및 성능에 관한 수치해석적 연구 (A Study on Prediction of Flow Characteristics and Performance of a Heavy-Duty Diesel Engine with Continuously Regenerating Method PM Reduction)

  • 한영출;문병철;오상기;백두성
    • 한국자동차공학회논문집
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    • 제13권2호
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    • pp.52-57
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    • 2005
  • The increasing automobiles continue to cause air-pollution problem s worse than ever. In fact, many automobile research are involved in how to reduce exhaust emissions effectively specially in $NO_X$ and PM to comply with stringent emission standards, Euro V. This research emphasized on the development of continuous regeneration DPF technology which was one of promising removing technology of particulate matters because of its comparability and high applicability. In addition, this research discussed on some design points of view through correlation study by com paring the experimental data with computational results by the introduction of commercial codes such as CFD-ACE+ and KIVA-3V. The numerical simulation on the performance of continuous regeneration DPF apparatus and corresponding emission characteristics has been predicted well enough and verified with experimental results. The pressure and average temperatures are decreased to about 2.6% and 1.4% respectively under a full engine load condition mainly due to back pressures raised by diesel particulate filter. Pressure, temperature and heat releasing rates tend to decrease specially at higher engine load, but they are not affected at lower engine load regions.