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汽车柴油机节能技术————涡轮增压技术
技术 2019-05-20 18:30:03 字数：1352

由于小型高速涡轮增压器技术日趋成熟以及增压与中冷的结合，推动了涡轮增压在车用柴油机上的应用。涡轮增压装置主要是由涡轮室和增压器组成。废气进入涡轮膨胀做功，驱动增压器压缩新鲜空气，从而提高进气压力。为满足不断严格的排放法规和提高发动机的全工况性能，车用增压器正朝着小型、高效、灵敏等方向发展。

最近几年发展起来的可变喷嘴涡轮增压器通过对执行器的控制来改变涡轮流通截面积大小，从而实现增压器与发动机良好匹配的目的。Garrett公司开发的液压控制AVNT技术，进一步提高了控制的精确度。博格华纳公司开发的由两个串联的涡轮增压器组成的R2S可控两级涡轮增压系统很大程度上改善了燃油经济性并提高了发动机性能。

汽车柴油机节能技术————涡轮增压技术

华晨1.8T系列发动机

我国大中型柴油机多已采用增压技术，中型柴油车采用增压技术占40%，轻型柴油车增压仅占7%，而轿车汽油机涡轮增压技术还比较落后。近年来，这一技术在国产品牌轿车上的应用也有所突破，华晨联手德国FEV历时三年成功研制了自主涡轮增压发动机——华晨1.8T系列发动机。并于2006年6月投入批量生产，实现了我国汽车核心技术研发的重要突破。

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