• Title/Summary/Keyword: 차량배출가스

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A Study on Emission Characteristics in A LPG Vehicle (LPG차량에서 배기가스 특성에 관한 연구)

  • Baik, Doo-Sung
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.7 no.6
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    • pp.993-997
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    • 2006
  • This research presented experimental results obtained from the bench test of a 1800cc LPG vehicle, fitted with ECM for fuel supplying controlled system. The comparison study was made with non-ECM-equipped in terms of performances and emission characteristics. CVS-75 emission tests was conducted in order to meet emission regulations.

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Impact of Test routes and Driving style on NOx emissions of Light-Duty Diesel Vehicle over Real Driving Emissions test (승용 경유 차량의 실제도로 주행 배출가스 시험에서 주행 경로와 운전 성향이 질소산화물에 미치는 영향)

  • Yu, Young Soo;Jeong, Jun Woo;Chon, Mun Soo;Cha, Junepyo
    • Journal of ILASS-Korea
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    • v.24 no.2
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    • pp.73-81
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    • 2019
  • It is expected that the introduction of real-driving emission will strengthen the exhaust emission. However, various researches have been reported that real-driving emission has been influenced by factors such as characteristics of the test routes and driving characteristics for drivers. In order to reflect this effect, European Commission applied the concept of driving dynamics to prevent deliberately driving of excessive and acceleration over RDE test. The purpose of this study is to analyze the characteristics of exhaust emissions according to real-driving test in three test routes and driving style. As a result of the test, it was confirmed that when the same driver tested real-driving test under three test routes, it depends on the driving characteristics of the route. Also, RDE-NOx for driving style was that severe driving has been about 16 times higher than normal driving in KNUT route.

A Case Study on the Emission Impact of Land Use Changes using Activity-BAsed Traveler Analyzer (ABATA) System (활동기반 통행자분석시스템(ABATA)을 이용한 토지이용변화에 따른 차량 배기가스 배출영향 사례 분석)

  • Eom, Jin Ki;Lee, Kwang-Sub
    • Journal of Cadastre & Land InformatiX
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    • v.53 no.1
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    • pp.21-36
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    • 2023
  • Activity-based modeling systems have increasingly been developed to address the limitations of widely used traditional four-step transportation demand forecasting models. Accordingly, this paper introduces the Activity-BAsed Traveler Analyzer (ABATA) system. This system consists of multiple components, including an hourly total population estimator, activity profile constructor, hourly activity population estimator, spatial activity population estimator, and origin/destination estimator. To demonstrate the proposed system, the emission impact of land use changes in the 5-1 block Sejong smart city is evaluated as a case study. The results indicate that the land use with the scenario of work facility dispersed plan produced more emissions than the scenario of work facility centralized plan due to the longer travel distance. The proposed ABATA system is expected to provide a valuable tool for simulating the impacts of future changes in population, activity schedules, and land use on activity populations and travel demands.

A Long Term Market Forecasting of Passenger Car using MESSAGE Modelling (MESSAGE 모델링을 이용한 승용차 부문의 그린카 도입 전망 분석)

  • Yoo, Jong-Hun;Kim, Hu-Gon
    • Journal of Energy Engineering
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    • v.21 no.1
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    • pp.33-42
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    • 2012
  • In this study, long-term greenhouse gas reductions expected passenger sector was used for the MESSAGE. Green Car road map proposed BAU scenario, Enhanced diffusion green car scenario, and price 1, 2 scenarios was configured with four scenarios. Enhanced diffusion green car in the scenario, in 2050 compared to BAU scenario 13% of the emissions will decrease. Price 1 and Price 2 scenario is emissions reduction of 14% compared to BAU. This study consists of six chapters. Introduction of MESSAGE, creation and RES in the year and the target year set a different base line and the passenger building materials sector activities, steps for passenger sector scenario and Based on the results of running the emissions reductions were to describe.

Life Cycle Assessment of Timber Arch-Truss Bridge by Using Domestic Pinus rigida Glued-Laminated Timber (리기다소나무 구조용 집성재를 활용한 아치 트러스 목조교량의 전과정평가)

  • Son, Whi-Lim;Park, Joo-Saeng;Kim, Kwang-Mo
    • Journal of the Korean Wood Science and Technology
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    • v.42 no.1
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    • pp.1-12
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    • 2014
  • This study carried out life cycle assessment for evaluating environmental impacts of timber Arch-Truss bridge by using domestic Pinus rigida Miller glued-laminated timber throughout life cycle such as extraction, manufacturing, transportation, construction, use, dismantlement, transportation of waste, disposal and recycling. The life cycle GHG (GreenHouse Gas) emissions of the target bridge are 192.56 ton $CO_2$ eq. in 50 years. Especially, the life cycle GHG emissions of concrete used in the target bridge are 82.84 ton $CO_2$ eq. which accounts for 53.02% of the GWP (Global Warming Potential) in extraction and manufacturing stages. The target bridge is constructed of $116.57m^3$ of domestic Pinus rigida Miller glued-laminated timber and used timber has stored 104.72 ton $CO_2$. If an effect of carbon storage in timber is applied to the total GHG emissions of the target bridge, the GHG emissions can be reduced by 54.38%. In the case of substitution effect, if domestic Pinus rigida Miller glued-laminated timber replaces steel manufactures used in other bridge which has the same structure and life span as the target bridge, the GHG emissions in extraction and manufacturing stages can be reduced by 10.26% to 23.91%.

An Analysis of Local Quantity of Carbon Absorption, Fixation and Emission by Using GIS

  • Kim, Hyeon-Tae;Moon, Byeong-Eun;Choi, Eun-Gyu;Kim, Chi-Ho;Ryou, Young-Sun;Kim, Jong-Goo
    • Journal of the Korea Organic Resources Recycling Association
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    • v.22 no.1
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    • pp.40-48
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    • 2014
  • Due to increasing greenhouse gas emissions, global warming and abnormal weather phenomena it has become important on a national level to keep a count of greenhouse gases being emitted. We want to take advantage of any selected area, as the basic data for the calculation of greenhouse gas emissions, Forest and Grassland, Paddy fields, and Fields(crops), Greenhouse(crops), Pig farm, Cattle farm, Farm household(populations, agricultural machinery) and Vehicle, the basic building blocks shots with a small amount of per-unit basis, the statistics calculated based on regional carbon emissions through the literature and experimental. Carbon absorption 772,960 ton C/year, amount of fixation 487,477 ton C/year, amount of emission 1,112,607 ton C/year were noted in Gimje-si, and amount of carbon absorption 55,559 ton C/year, amount of fixation 25,864 ton C/year, amount of emissions 58,355 ton C/year in Gongdeok-myeon, respectively. The carbon absorption at Hwangsan-ri is 25,107 ton C/year, fixation 4,301 ton C/year, and emission 20,330 ton C/year respectively. We were able to estimate the amount of carbon according to the specific characteristics of each unit village, then expanding it to a large-scale and comparative analysis, therefore we were able to obtain basic data on the national levels of carbon absorption.

Development of BLDC motor Controller for VVA Module of Gasoline Vehicle (가솔린 차량용 가변 밸브 BLDC 모터 제어기 개발)

  • Park, Joon Sung;Choi, Jun-Hyuk;Gu, Bon-Gwan;Kim, Jin-Hong;Jung, In-Soung
    • Proceedings of the KIPE Conference
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    • 2012.07a
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    • pp.586-587
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    • 2012
  • 자동차 산업에 있어서 반도체 기술발전과 더불어 차량 내 기능들이 효율성, 경제성 및 친환경적인 관심을 고려하여 기계식 방식에서 전력전자식 방식으로 대체되고 있는 실정이다. 엔진의 연비를 향상시키기 위해서는 엔진의 연소효율을 개선하거나, 엔진에서 발생되는 손실을 줄이는 것이 필요한데, VVA(Variable Valve Actuation, 가변 밸브 작동) 기술은 엔진 흡기 유동 강화, 펌핑 손실 저감, 기계적 마찰 손실 저감등을 통해 엔진의 연비를 향상시킬 수 있다. 또한 VVA 엔진을 장착한 차량은 차량의 발진 응답성이 향상되고, 배기가스 배출량을 줄일 수 있어 친환경 저연비 차량을 실현하는데 핵심 차량부품기술이다. 최근까지 차량의 전동기 구동의 경우 DC모터 방식이 많이 적용되어 왔으나 DC모터의 내구성 및 효율 등의 이유로 BLDC모터로 바뀌고 있는 추세이다. 본 논문에서는 이와 같은 VVA 기구의 적용을 위하여 BLDC모터 제어기를 개발하였다.

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A Study on the Emission Characteristics of Greenhouse Gas by Cumulative Mileage of Gasoline Vehicle (가솔린 차량의 누적주행거리에 따른 온실가스 배출특성 연구)

  • Park, Jin-sung;Lim, Jae-Hyuk;Kim, Ki-Ho;Lee, Jung-Min
    • Journal of ILASS-Korea
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    • v.23 no.4
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    • pp.227-233
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    • 2018
  • An automobile is composed of a combination of a lot of parts, and it is difficult to maintain the same performance from a new car until it's scrapped. Greenhouse gases included in automobile emissions are typically carbon dioxide and methane. It is expected that this greenhouse gas will change depending on the aging (cumulative mileage) of the automobile However, the greenhouse gas characteristics by cumulative mileage lack of actual data due to time and economic difficulties. Therefore, in this paper, we selected automobile with high sales by displacement in korea and carbon dioxide and methane were measured by using method of the related law. The cumulative mileage is as follows; within 160 km (Statutory mileage by 2010), 6500 km (current statutory mileage), 15000 km (approximately 1-year average mileage of Non-business passenger vehicle). As a result of the test, the emission of carbon dioxide and methane was the smallest at 6,500 km, and increased in order of 15000 km, within 160 km. Also, it was confirmed that the $CO_2$ emission change of a large displacement automobile is more smaller at each mileage. Although the greenhouse gas tends to increase as the mileage of the vehicle, it is thought that additional confirmation is required of since 15,000 km as well, because it can occur deviations due to taming process or mechanical friction of the automobile.

A Study on Exhaust Gas Characteristics of Off-road Mechanical Diesel Engine According to EGR Map Application (Off-Road 기계식 디젤엔진의 EGR Map 적용에 따른 배출가스 특성 연구)

  • Kim, HoonMyung;Kang, JeongHo;Han, DaHye;Ha, HyeongSoo;Jung, HakSup;Pyo, SuKang;Ahn, JuengKyu
    • Transactions of the Korean Society of Mechanical Engineers B
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    • v.38 no.8
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    • pp.665-670
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    • 2014
  • Because reducing atmospheric pollution is becoming a serious issue, studies are actively focusing on exhaust gas reduction. This study was conducted to determine the emission characteristics when applying an EGR system, the main approach used for NOx reduction, to an off-road mechanical diesel engine. For the application of the EGR system, the emission characteristics in consideration of the engine conditions were analyzed. The optimum EGR ratio for NOx emission reduction was determined by applying variable EGR conditions for each engine speed condition. Considering the above process, the emission characteristics of the modified EGR condition are compared with those of other conditions (non-EGR and existing EGR condition) in the NRTC mode. Consequently, NOx emission was reduced by around 42 compared with the non-EGR condition when using the modified EGR map.

ISG integrated circuit HDC/LDC design (ISG용 통합 HDC/LDC 회로 설계)

  • Sin, Chul-Jun;Kwak, Tae-Kyun;Choi, Dong-soo;Park, Do-hwan;Yoon, Jun-chul;Lee, Jun-Young
    • Proceedings of the KIPE Conference
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    • 2013.07a
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    • pp.409-410
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    • 2013
  • 최근 연비 개선 문제에서 전 세계적으로 화두가 되고 있는 ISG라 함은 IDLE STOP & GO의 약자로 공회전시 낭비되는 연료를 저감하고 배출가스를 최소화 하는 친 환경 저연비 시스템이다. 차량의 성능 향상 및 안락함과 안전도의 개선을 위하여 차량에 사용되는 전기 시스템은 점차 증가하고 있으며, 전기시스템의 증가에 따라 차량에 작용하는 전기 부하량은 매년 늘어나고 있다. 이와 같은 ISG 구동을 위해서는 대전력 응용에 적합한 컨버터 연구가 활발히 진행되고 있다. 본 논문에서는 10kW급 고전압 직류 변환장치(High voltage DC-DC Converter ; HDC)와 1.5kW급 저전압 직류 변환장치(Low voltage DC -DC Converter : LDC) 설계하여 검증하였다.

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