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1.前言最近,曾一度冷淡下去的不为人重视的排气规则不仅没有被取消,相反,在考虑汽车新系统时,依然被它纠缠着。另外,从省能的角度看,还有很多研究课题,如:为降低燃料消耗率的汽车轻量化,机械损失的降低、前置发动机前驱动化;柴油机化;电子化等;再有,从环境条件看,高低温、全天候亦是必不可少的;涉及到美国环境保护局低气压条件下(高原地区条件)的各种评价、噪声试验及与电波屏蔽相
1. INTRODUCTION Recently, the unpopular exhaust rule, once perverted, has not been lifted. Instead, it has been entangled in considering the new vehicle system. In addition, from the energy saving point of view, there are many research topics, such as: to reduce the fuel consumption of light vehicles, reduce mechanical losses, pre-engine front-drive; diesel engine; electronic and so on; Environmental conditions, high and low temperature, all-weather is also essential; related to the United States Environmental Protection Agency conditions of low pressure (plateau conditions) of the various assessment, noise test and radio wave shielding phase