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