A method for driving a vehicle driven by an internal combustion engine having a plurality of {HEAD ~ compression chambers} divided into {TAIL ~ a first set} and a second set, each of said sets being able to be separately operated and to be convertible in operation so as to take an compression action 
A method for driving a vehicle driven by an internal combustion engine having a plurality of { HEAD ~ compression chambers } divided into { TAIL ~ a first set } and a second set , each of said sets being able to be separately operated and to be convertible in operation so as to take an compression action
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL 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