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