As a result, excessive unburned fuel components are not discharged from {TAIL ~ the internal combustion engine}, and the exhaust purifying catalyst can be activated at {HEAD ~ an earlier stage} 
As a result , excessive unburned fuel components are not discharged from { TAIL ~ the internal combustion engine } , and the exhaust purifying catalyst can be activated at { HEAD ~ an earlier stage }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD