a bypasses flow rate control valve configured to control {HEAD ~ a flow rate} of the exhaust gas flowing in {TAIL ~ the bypass path}, 
a bypasses flow rate control valve configured to control { HEAD ~ a flow rate } of the exhaust gas flowing in { TAIL ~ the bypass path } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH