Direct operated velocity controlled nozzle valve for a fluid inj

Fluid sprinkling – spraying – and diffusing – Unitary injection nozzle and pump or accumulator plunger

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239124, 239 5, F02M 4702

Patent

active

057526591

ABSTRACT:
The present invention provides direct control over the opening and closing of a fuel injector nozzle valve independent of fuel injection pressure or engine operating condition and allows for initial fuel injection rate shaping by controlling the opening velocity of the nozzle valve. The present invention further allows for control over the closing velocity of the nozzle valve thereby reducing stresses on the nozzle tip as the check engages the check seat while not adversely affecting the performance of the fuel injector. This results in lower tip wear and improved life of the fuel injector.

REFERENCES:
patent: 3610529 (1971-10-01), Huber
patent: 4412657 (1983-11-01), Mowbray
patent: 5460329 (1995-10-01), Sturman
patent: 5463996 (1995-11-01), Maley et al.
US Appl 08/438,858 filed May 10, 1995 Electronically Controlled Fluid Injector System Having Pre Injection Pressurizable Fluid Storage Chamber And Direct-Operated Check.

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