Given a plurality of gas exchange valves in the internal combustion engine, each having an associated control device, both the load control and the phase displacement of all the gas exchange valves can be carried out through identical rotation of the pump plungers, or identical axial displacement of {HEAD ~ the spool valves} of {TAIL ~ all the control devices} 
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Given a plurality of gas exchange valves in the internal combustion engine , each having an associated control device , both the load control and the phase displacement of all the gas exchange valves can be carried out through identical rotation of the pump plungers , or identical axial displacement of { HEAD ~ the spool valves } of { TAIL ~ all the control devices }
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