The present invention provides {HEAD ~ an engine} capable of increasing an introducing amount of {TAIL ~ an EGR gas} without reducing an introducing amount of a fresh air 
The present invention provides { HEAD ~ an engine } capable of increasing an introducing amount of { TAIL ~ an EGR gas } without reducing an introducing amount of a fresh air
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH