For {HEAD ~ the controlling} of {TAIL ~ a variable stroke} of gas exchange valve 10 for the purpose of achieving an extremely short opening duration of the gas exchange valve in partial load and low load operation of the internal combustion engine, there is connected to pump outlet 38 an additional relief opening that can be optionally closed by an electrically controllable closing valve 40 
For { HEAD ~ the controlling } of { TAIL ~ a variable stroke } of gas exchange valve 10 for the purpose of achieving an extremely short opening duration of the gas exchange valve in partial load and low load operation of the internal combustion engine , there is connected to pump outlet 38 an additional relief opening that can be optionally closed by an electrically controllable closing valve 40
OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL 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 OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH