wherein the slide valve is {TAIL ~ a rotary slide valve} of which {HEAD ~ a rotor} is formed by the crankcase and a stator is a ring housing, wherein the crankshaft is stationary in operation, 
of is formed
wherein the slide valve is { TAIL ~ a rotary slide valve } of which { HEAD ~ a rotor } is formed by the crankcase and a stator is a ring housing , wherein the crankshaft is stationary in operation ,
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL REL OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH