摘要
全球气候的异常变化让世人的目光再次聚焦到节能和减排这2个敏感的话题上,各国对于废气排放的标准也越来越严格。为了符合法定的排放限制,仅仅将发动机燃烧温度保持在最理想的水平是不够的,还需要附加的流程或系统，例如冷却废气循环或多级涡轮增压等。
The ever-changings of the global climate made people concentrate on energy saving and emission reduction,many countries were increasingly strict in the standard of emission of waste gas. Based on this,rexroth fan drive came into being,it could change these conditions ,and would make a increasingly important role in modern engines.
出处
《商用汽车》
2010年第12期108-108,共1页
Commercial Vehicle
