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On-board measurements of unit emissions of CO,HC,NOx and CO2 were conducted on 17 private cars powered by different types of fuels including gasoline,dual gasoline–liquefied petroleum gas(LPG),gasoline,and diesel. The tests performed revealed the effect of LPG injection technology on unit emissions and made it possible to compare the measured emissions to the European Artemis emission model. A sequential multipoint injection LPG kit with no catalyst installed was found to be the most efficient pollutant reduction device for all of the pollutants,with the exception of the NOx. Specific test results for a sub-group of LPG vehicles revealed that LPG-fueled engines with no catalyst cannot compete with catalyzed gasoline and diesel engines. Vehicle age does not appear to be a determining parameter with regard to vehicle pollutant emissions. A fuel switch to LPG offers many advantages as far as pollutant emissions are concerned,due to LPG's intrinsic characteristics.However,these advantages are being rapidly offset by the strong development of both gasoline and diesel engine technologies and catalyst converters. The LPG's performance on a chassis dynamometer under real driving conditions was better than expected. The enforcement of pollutant emission standards in developing countries is an important step towards introducing clean technology and reducing vehicle emissions. 相似文献
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Hong Zhao Yunshan Ge Jianwei Tan Hang Yin Jiadong Guo Wei Zhao Peipei Dai 《环境科学学报(英文版)》2011,23(11):1831-1838
The effects of different mixing ratios of methanol/gasoline blends and new three-way catalytic converter on regulated and unregulated emissions, especially VOC and carbonyl compound emissions were investigated. 相似文献
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《中国ISO14000认证》2008,(4):46-53
在欧洲和在其它地方.就环境友好型的产品而言.产品导向环境政策已经有了相当成就的记录。但是.他们主要讨论了出现在前一个部分中的目标2和3.此处我们将用乘用车的案例加以说明。专题研究由四个小节组成,其中我们给出了选择汽车的一般动机为例子:一个面向产品导向政策与汽车相关问题的概述:迄今为止欧洲所有的这样的尝试的回顾:一张案例研究对IPP政策意义的列表。 相似文献
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近几年来,中国汽车乘用车市场呈现出爆发性增长,实现了从2002年的125万辆,到2007年629万辆的跨越。而随着汽车普及率的提高,女性对于汽车的兴趣、关注度和话语权也在飙升,女性车主的比例明显增加。据权威机构的统计数据显示,女性车主比例已由2002年的20.3茗增加到2006年的30.9%。 相似文献
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随着钓鱼岛事件的不断升级,国内抵制日货的情绪更是一浪高过一浪,"打、砸、烧"日系车,导致很多人不敢买日系车,也让很多已经买了日系车的朋友甚感委屈,特别是一些代理日本品牌的中国商人们,更是叫苦连天,巨资投进去了,效益却没了,十分难过和无奈。在刚刚过去的九月,日系车整体销售额大幅下滑4成以上,全体日系车进入了冬眠期,但同比数据显示,国内的乘用车销售量其实出现了小幅增长,那么日系车销售量降低,什么车的销售量增加呢?受益最大的就是德系品牌,因 相似文献