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