A PISTON OF A FUEL INJECTION PUMP AND A FUEL INJECTION PUMP

摘要

A piston (4) of a fuel injection pump (1) of a piston engine, comprising a first inclined control edge (10) located at the side of the piston (4) for determining the starting time of the fuel injection of the injection pump (1) at a certain engine load, and a second inclined control edge (11) located at the side of the piston (4) for determining the ending time of the fuel injection of the injection pump (1) at a certain engine load. The distance between points of the first (10) and second (11) control edges corresponding to the same load in the axial direction (13) of the piston (4) changes linearly or essentially linearly at a range (A-D) corresponding to the engine idle speed and the full load.