wherein the slide valve and control passages are so arranged that the working medium, at high pressure, passes through the crankcase regardless of whether the piston machine is operated as {HEAD ~ an engine} or as {TAIL ~ a working machine}, 
wherein the slide valve and control passages are so arranged that the working medium , at high pressure , passes through the crankcase regardless of whether the piston machine is operated as { HEAD ~ an engine } or as { TAIL ~ a working machine } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH