Plunger lead machining process for fuel injection pumps

Details Plunger lead machining process for fuel injection pumps Plunger lead machining process for fuel injection pumps

1992-11-17

1993-12-07

Cuda, Irene

Metal working

Method of mechanical manufacture

Prime mover or fluid pump making

2988802, 29890128, B23P 1500

Patent

active

052673960

ABSTRACT:
A process for machining a lead of a plunger to be used in a variable fuel injection rate type in-line fuel injection pump includes machining a plunger blank to form a port hole and then hardening. After this, the plunger blank is additionally machined, while being chucked by a NC machine, to form a shallow hole overlapping the lower end portion of the port hole. The plunger body is then machined in the chucked state with the machining reference of the shallow hole to form a longitudinal groove and a lead.

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patent: 4951372 (1990-08-01), Messingschlager
patent: 5135367 (1992-08-01), Finsterwalder et al.

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