Liquid fuel injection pumping apparatus

摘要

A fuel pump includes a pump plunger movable by the interaction of a roller with cam lobes. The extent of movement of the plunger is limited by stop rings co-acting with the ends of the roller. Adjustment means for setting said stop rings is provided to determine the normal maximum quantity of fuel which can be supplied and further adjustment means to set the rings so that additional fuel can be supplied for starting purposes.