The control sleeve pump used is a mature component that has proven its effectiveness in {TAIL ~ fuel injection systems} for internal combustion engines, e.g. as an element of the control sleeve in {HEAD ~ line fuel injection pump} described above, and thus has low susceptibility to failure 
The control sleeve pump used is a mature component that has proven its effectiveness in { TAIL ~ fuel injection systems } for internal combustion engines , e.g. as an element of the control sleeve in { HEAD ~ line fuel injection pump } described above , and thus has low susceptibility to failure
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