除了环保，EGR阀还在一定程度上提升了发动机的燃油经济性。通过再循环废气，发动机的燃烧效率得到了提升，这样就能在相同的动力输出下，消耗更少的燃油。对于车主来说，既能省钱，又能为环保出一份力，何乐而不为呢？

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