If, during the activation process of gas exchange valve 10, {TAIL ~ the current} to {HEAD ~ magnetic valve} 42 is switched off, magnetic valve 42 opens, and triggers, through the relief of hydraulic working chamber 20, the closing process of gas exchange valve 10 by valve closing spring 21 
If , during the activation process of gas exchange valve 10 , { TAIL ~ the current } to { HEAD ~ magnetic valve } 42 is switched off , magnetic valve 42 opens , and triggers , through the relief of hydraulic working chamber 20 , the closing process of gas exchange valve 10 by valve closing spring 21
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD 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