• Title/Summary/Keyword: Euro

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The effects of introduction of diesel passenger cars on the ventilation requirements for road tunnels (경유승용차 도입이 터널 소요환기량에 미치는 영향분석)

  • Kim, Hyo-Gyu;Song, Seok-Hun;Kim, Nam-Young;Lee, Chang-Woo
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.9 no.3
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    • pp.309-321
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    • 2007

  • Since the first diesel passenger car hit the local road in late 2005, the share of diesel cars is growing significantly; possibly up to the level as in the western Europe. In this study, the effects of introduction of diesel passenger cars on the ventilation rate and facility capacity are analyzed for the three individual cases with different basic exhaust rate based on the vehicle age, the vehicle class percentage and the smoke exhaust rate. The target tunnel for this comparative study is a typical 2 km-long 2-lane highway tunnel. Case 1 assuming the current local design standards and the diesel vehicles comprising 40% of the total passenger cars on the road required more ventilation rate and facility capacity than in the case only with the current standards. Case 2 which is the real tunnel currently in the designing stage taking into account the vehicle age but ignoring the diesel vehicle ratio, and Case 3 on the contrary considering the both factors show similar level of ventilation characteristics as EURO-3 emission regulation. Application of the emission standard set by the Ministry of Environment for newly manufactured vehicles in the current local tunnel design standard indicates higher requirements than for EURO-2 regulation, whereas the emission standard came into effect in 2006 results in the ventilation characteristics similar to EURO-4. This study aims at providing fundamental information for assessing the basic emission rate and determining the optimal ventilation rate and facility capacity considering the growing percentage of diesel cars and gradually decreasing level of smoke emission forced by the relevant laws.

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Comparison of Emission Characteristics from Euro V Diesel Engine by Standard measurement Cycle in the Construction Equipment (EURO V 대응 건설기계 엔진의 표준시험모드에 따른 배출량 비교)

  • Yu, Seunghun;Joo, Taeheun;Lee, Chang-Eon
    • 한국연소학회:학술대회논문집
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    • 2014.11a
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    • pp.143-144
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    • 2014

  • The demand of diesel engine on the construction equipment has been rapidly increased because of thermal efficiency and power. But some of the construction equipment is imported from other country, since the their demands are not so large as compared with the other construction equipment. The imported construction equipments will be tested for emission with standard measurement mode. This study was conducted to measure emission characteristics of the construction equipment with changed standard measurement experimentally.

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A Study on the Applicability of Multipurpose Functional Synthetic Resin Formworks (다목적 기능 합성수지 거푸집 현장 적용성에 관한 연구)

  • Kim, Tae-Hui;Ahn, Sung-Jin;Lee, Young-Do;Choi, Suk;Nam, Kyung-Yong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2018.11a
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    • pp.143-144
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    • 2018

  • This study the workability of synthetic resin form was examined through field application. results there was no warping or bulging of the mold during concrete placement in the field application. Also, the concrete surface finish of synthetic resin form was better than that of euro-form.

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