Unit injector and drive train with improved push rod-plunger con

Details Unit injector and drive train with improved push rod-plunger con Unit injector and drive train with improved push rod-plunger con

1990-08-16

1991-04-30

Kashnikow, Andres

Fluid sprinkling, spraying, and diffusing

Unitary injection nozzle and valve with continuously...

239584, F02M 6120

Patent

active

050110799

ABSTRACT:
An injector drive train push-rod injector plunger connection for use in internal combustion engines is disclosed. The injector includes a body having an axial bore, a plunger, and a biasing mechanism which biases the plunger away from the injection chamber. The plunger is slidable within the bore. A push rod connects the plunger to a drive train assembly which includes a pivotable rocker arm. A first end of the push rod is connected to the plunger and a second end of the push rod is connected to the driven end of the rocker arm. The first end includes a spherical portion which is receivable in a complementarily-shaped concave portion disposed on the outer end of the plunger but not within the plunger. The spherical portion has a diameter at least equal to the outer diameter of the plunger. The load from the driving assembly is transmitted from the push rod to the plunger at the end of the plunger only. This arrangement reduces almost to elimination side loading on the plunger and on the fuel injector thereby reducing wear, preventing leakage and maintaining better control over the amount of injected fuel.

REFERENCES:
patent: Re24633 (1959-04-01), Voorhies
patent: 1792836 (1931-02-01), Handwerker
patent: 2144861 (1939-01-01), Truxell, Jr.
patent: 2912168 (1959-11-01), L'Orange
patent: 3409225 (1968-11-01), Maddalozzo et al.
patent: 3544008 (1970-12-01), Reiners et al.
patent: 3965875 (1976-06-01), Perr
patent: 4571161 (1986-02-01), LeBlanc et al.
patent: 4669659 (1987-06-01), LeBlanc et al.

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