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RISS 인기검색어
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- 저자 : 이동채(dongche Lee) (검색결과 3 건)
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흡기계 HC 흡착필터가 차량 증발가스 저감에 미치는 영향
김덕중(Deokjung Kim),이기수(Geesoo Lee),김현철(Hyunchul Kim),최승배(Seungbae Choi),이동채(Dongche Lee),임종순(Jongsoon Lim),조용석(Yongseok Cho) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
The methods of reducing the amount of HC evaporative gas in the engine can be divided into two types: one involving the use of a catalyst, and another involving the use of an HC absorption filter. The method that involves the use of an HC absorption filter is recommendable as it would allow the evaporative gas in the intake manifold to be reduced when the engine is stopped. It is difficult, however, to predict the exact volume or the life span of absorption and desorption. Moreover, as the filter is to be installed in the air intake systems, air intake loss can occur. As such, a precise HC absorption filter design must be made, and repeated absorption and desorption tests, as well as a test of applicability to an actual vehicle, must be conducted. In this study, HC absorption filter was developed for use in reducing the evaporative gas in the air intake systems, and the Butane Working Capacity(BWC) test was conducted. The honeycomb type HC absorption filter, which shows the best absorption performance, was then installed in vehicle. 1-day diurnal test and hot soak test was then performed three times: before and after the installation of the HC absorption filter, and after sealing the air intake system. The results of the test show that the total HC evaporative gas emission after the installation of the HC absorption filter was 0.637 g/test, which represented a reduction of about 0.29 g compared to the gas emission (0.093 g/test) before the installation of the HC absorption filter. The efficiency of the HC absorption filter, which was calculated based on the result of its installation assessment, was shown to be 97.3%, which is a significantly high percentage.
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PZEV 규제 대응 흡기계 증발가스 흡착 필터의 Mini SHED 평가
김덕중(Deokjung Kim),이기수(Geesoo Lee),김현철(Hyunchul Kim),허형석(Hyungseok Heo),최승배(Seungbae Choi),이동채(dongche Lee),조용석(Yongseok Cho) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
North America's representative emission control regulation, Partial Zero-Emission Vehicle (PZEV), greatly reinforced its requirements on the evaporative gas through the intake manifold when an engine was stopped. Since only using a canister could not meet enhanced regulations on the evaporative gas, new technologies for reducing the evaporative gas were required to satisfy the regulations regarding the control of the intake system's evaporative gas. In this study, three kinds of HC traps for 3L gasoline engine were developed to reduce the evaporative gas emission of the intake system. And Mini SHED performance tests for HC trap with honeycomb type were evaluated according to the test procedure specified by California Air Resources Board (CARB). Variations of evaporative emission gas were observed and analyzed on 1-Day diurnal test and 3-Day diurnal test including hot soak test. The result shows that the amount of generated evaporative gas emission was 43 ㎎/test satisfy the PZEV evaporative emission standard, 54㎎/test.
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김덕중(Deokjung Kim),이기수(Geesoo Lee),김현철(Hyunchul Kim),허형석(Hyungseok Heo),최승배(Seungbae Choi),이동채(Dongche Lee),조용석(Yongseok Cho) 한국자동차공학회 2009 한국자동차공학회 부문종합 학술대회 Vol.2009 No.4
North America’s emission control regulation, which emphasizes on Partial Zero-emission Vehicle (PZEV), greatly reinforced its requirements and conditions on the evaporative emission through the air intake system when an engine was stopped. Accordingly, it can not meet PZEV on the absorption of evaporative emission by simply using a canister, as we had done previously. In this paper, eight types of HC traps, of which their shapes and manufacturing processes differed, were developed to reduce evaporative gas. We have conducted various kinds of tests to achieve absorption and desorption flux, which are needed for the Butane Working Capacity(BWC) test. In addition, the absorption performance of samples of the eight types of HC traps were examined by conducting the BWC test. The absorption and desorption performance of the HC traps were compared and analyzed. The results of the BWC test showed that the B0 type with (describe the filter type) had the highest loading weight of 16.2 g. The absorption loading weight of the HC trap after driving 20,000 ㎞ decreased by 4.9 g compared to that of the fresh sample.
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