Fuel injection system for engines

Details Fuel injection system for engines Fuel injection system for engines

1997-12-18

1999-09-14

Moulis, Thomas N.

Internal-combustion engines

Charge forming device

With fuel pump

123446, 92129, F02M 3304

Patent

active

059506016

ABSTRACT:
In this fuel injection system, a larger-diameter portion and a smaller-diameter portion which constitute each intensifying piston are brought into contact with a convex surface, whereby the bending of the smaller-diameter portion can be prevented when an external force exerted on the larger-diameter portion causes it to incline. The smaller-diameter portion and larger-diameter portion are formed separately, urged by a return spring and engaged with each other. Even when an injector body is inclined due to an external force and thermal stress to cause the larger-diameter portion to nearly follow up the inclining of the injector body, a contact point of the flat bottom surface of the larger-diameter portion and the convex top surface formed on the smaller-diameter portion is merely shifted due to the rolling of these surfaces. Since the smaller-diameter portion does not receive a bending effect by the larger-diameter portion, inconvenience, such as a galling between the smaller-diameter portion and a bore-defining surface of a fuel supply body does not occur.

REFERENCES:
patent: 3880054 (1975-04-01), Domyan
patent: 5325834 (1994-07-01), Ballheimer et al.
patent: 5515829 (1996-05-01), Wear et al.
patent: 5722373 (1998-03-01), Paul et al.

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