• Title/Summary/Keyword: 에어컨가동 모드

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Evaluation on the Additional CO2 by Mobile Air Conditioning Systems of Korean Light-duty Vehicles (국내 소형자동차의 에어컨 가동에 따른 CO2 배출량 평가)

  • Park, Junhong;Lee, Jongtae;Kim, Sunmoon;Kim, Jeongsoo;Kang, Gunwoo
    • Journal of Climate Change Research
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    • v.3 no.4
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    • pp.259-270
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    • 2012
  • Mobile air conditioning(MAC) systems of light-duty vehicles consume the most energy among auxiliary parts. Vehicle $CO_2$ reduction policies in Korea, US EPA and EU include the strategies to reduce additional $CO_2$ by MAC operation with providing incentive for the high-efficient MAC technologies. It is under development how to estimate MAC $CO_2$ and to differentiate advanced or high-efficient MAC system in US EPA and EU. The additional energy by MAC operation would beaffected by not only driving patterns but also environmental conditions such as temperature and humidity. In this study, we estimated MAC $CO_2$ of Korean light-duty vehicles with various driving cycles and environmental conditions. Test results were corrected to reference conditions for varied temperature and humidity during tests to get the comparable data for test vehicles. The test results showed that high-efficient MAC technologies have potential to reduce MAC $CO_2$ approximately by 50%. Considering the rate of MAC $CO_2$ to vehicle $CO_2$, it is expected that the introduction of high-efficient MAC technologies would considerably reduce vehicle $CO_2$ emission in MAC operation.

The study for fuel economy characteristics of hybrid electric vehicle (HEV) according to the driving condition (다양한 운전조건에 따른 하이브리드 자동차의 연비 특성 연구)

  • Lee, Minho;Kim, Sungwoo;Kim, Jeonghwan;Kim, Kiho;Jung, Choongsub;Rho, Kyungwan;Jang, Kwangsik
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.11a
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    • pp.104-104
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    • 2011
  • The fuel economy estimates essentially serve two purposes : to provide consumers with a basis on which to compare the fuel economy of different vehicles, and to provide consumers with a reasonable estimate of the range of fuel economy they can expect to achieve. The current fuel economy label values utilize measured fuel economy over city driving cycles. However, this test driving mode can not be evaluated the variety factor of the real-world. These factors include differences between the way vehicles are driven on the road and over the test cycles, air conditioning use, widely varying ambient temperature and humidity, widely varying trip lengths, wind, precipitation, rough road conditions, hills, etc. The purpose of this paper is to account for three of these factors on the fuel economy : 1) on-road driving patterns (i.e. higher speeds and more aggressive driving (higher acceleration rates)), 2) air conditioning, and 3) colder temperatures. The new test methods will bring into the fuel economy estimates the test results from the five emissions tests in place today : CVS-75, HWFET, US06, SC03 and Cold CVS-75. Based on these new test methods, this paper discusses the characteristics of driving condition on Hybrid electric vehicle (HEV). And this paper assesses the fuel economy label of HEV.

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