The crankshaft is formed as a rotary slide valve which, in operation, connects the first working chamber to the third working chamber and {HEAD ~ the second working chamber} to a working medium supply or {TAIL ~ discharge opening} 
to
The crankshaft is formed as a rotary slide valve which , in operation , connects the first working chamber to the third working chamber and { HEAD ~ the second working chamber } to a working medium supply or { TAIL ~ discharge opening }
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 HEAD HEAD REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL