In the piston machine of the present invention, {TAIL ~ the interior} of {HEAD ~ the crankcase} is used as a third working chamber 
In the piston machine of the present invention , { TAIL ~ the interior } of { HEAD ~ the crankcase } is used as a third working chamber
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH