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