A cylinder discrimination system utilizing fuel injection pump and its fuel injection pump

摘要

In order to provide a fuel injection pump capable of discriminating a cylinder, the fuel injection pump (1) capable of supplying fuel to engine (2) having a plurality of cylinders is provided with reference signal generating system (7, 35) capable of generating a plurality of reference signals corresponding to a plurality of cylinders. Of a plurality of reference signals, a specific reference signal differs from the reference signals other than said specific reference signal. The time point at which the specific reference signal is generated is related to a predetermined cylinder out of a plurality of cylinders, whereby the specific cylinder can be identified by means of a single fuel injection pump by discriminating the specific reference signal by discrimination means (71). Therefore, where the difference in fuel injection rate as to a plurality of cylinders is measured during the manufacturing process of the fuel injection pump, it becomes possible to correct the fuel injection rate to reduce the difference in the fuel injection rate by individual cylinders. <IMAGE>