• 제목/요약/키워드: Automobiles

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자동차 배기가스 중 입자상 탄소성분 내 PAHs의 정성적 비율 추정 (The Qualitative Rate Estimation of PAHs in Carbon Compounds of Particles in Vehicles Exhaust Gas)

  • 김종범;이경빈;김진식;김창환;차용호;권순박;배귀남;김신도
    • 한국대기환경학회지
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    • 제30권5호
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    • pp.449-460
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    • 2014

  • Since the emergence of domestically produced automobiles in 1964, the number of automobiles in circulation in South Korea has increased constantly. With this rapidly increasing number of automobiles, automobile-induced environmental pollution has become an issue of great concern, especially with regard to air pollution. Of the carbon composites contained in automobile exhaust gas, PAHs are known to be carcinogenic and highly deleterious to humans and thus need to be urgently mitigated. To address this issue of PAHs, this study was conducted to estimate qualitative of particulate PAHs contained in carbon composites in automobile exhaust gas, by capturing all particulate matter discharged from the latter. To allow for differentiated analyses, the automobiles investigated were divided into 4 groups: gasoline vehicle, motocycle, diesel vehicle, and LPG vehicle. Samples were analyzed using two methods. First, in-depth analysis was performed on organic carbon (OC) and elemental carbon (EC) composites with analysis parameters, using the Thermal Optical Transmittance Method (NIOSH 5040). Second, for the examination of particulate PAHs, GC/MSD was used to analyze the 16 PAH species specified by the Environmental Protection Agency (EPA). The analyses yielded the findings that diesel vehicles had the highest mass concentration ($2,007{\mu}g/m^3$), followed by motocycle ($1,066{\mu}g/m^3$), LPG vehicle ($392{\mu}g/m^3$), and gasoline vehicles ($270{\mu}g/m^3$). The highest carbon concentrations in total particulate matter by vehicle weight were produced from LPG vehicle (79.8%), followed by gasoline vehicle (77.4%), motocycle (69.8%), and diesel vehicle (59.1%).

  • https://doi.org/10.5572/KOSAE.2014.30.5.449 인용 PDF KSCI

Cruise Control of Automated Mechanical Transmission Automobiles

  • Guihe Qin;Anlin Ge;Jiehong Zhao;Lee, Ju-Jang
    • 제어로봇시스템학회:학술대회논문집
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    • 제어로봇시스템학회 2001년도 ICCAS
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    • pp.160.5-160
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    • 2001

  • In the paper, a cruise control system developed for the automobile with automated mechanical transmission (AMT) is introduced. After the AMT is concisely depicted, the paper details the functions, the points of the work, the principle of operation and the design course of the cruise control system.

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자동차 엔진 화재용 자동 소화 시스템 개발에 관한 연구 (A Study On The Development Of An Automatic Fire Extinguishing System For The Engine Compartment Use Of Automobiles)

  • 임성묵;정기창;김홍;강영구;이창섭
    • 한국화재소방학회:학술대회논문집
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    • 한국화재소방학회 1996년도 학술발표회
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    • pp.57-61
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    • 1996

  • Our goal was to make a cost-effective automatic fire extinguishing system for the engine compartment use of automobiles. We designed this system for the engine compartment. This system consists of 1)foam extinguisher, 2)four nozzles, 3)a pipe arrangement, and 4)an extinguishing device which is equipped with a glass bulb as detector. First and foremost, the extinguishing device was carefully designed to keep the system cost to a minimum. Second, a AFFF foam extinguisher was used because no other fire-fighting agents proved effective against fire in the engine compartment. The AFFF(Aqueous Film Forming Foam) agent which was used in the extinguisher is the 3M company's Light Water. We sought, however, to make other foams by using Halon 1301 and Halon alternatives such as HCFC Blend A, HFC-227ea. We selected these alternatives instead of air in order to raise the expansion ratio of the AFFF agent. By these means we discovered that it is possible to increase the expansion ration of the AFFF agent up to 44:1. We then demonstrated that our automatic fire extinguishing system is the most effective and lowest cost-system yet devised for passenger cars.

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