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