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？

One of the emissions control systems designed to combat both of those issues is the exhaust gas recirculation (EGR) system. As the name implies, EGR systems are responsible for recirculating ...

The most common culprit is carbon buildup on the throttle body, exhaust gas recirculation (EGR) valve and idle air control ...