According to {TAIL ~ the invention}, {HEAD ~ the means} of fixation of the said tank to the said engine unit are preferably deformable 
According to
According to { TAIL ~ the invention } , { HEAD ~ the means } of fixation of the said tank to the said engine unit are preferably deformable
REL REL 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