Other

A-i-l Corporation

Jeffrey P DiCarlo

Theodore J Tarabulski

John B Cavanaugh

Curtis J Knapper

Eric S Brisbon

Richard J Czarnik

Thomas C Simard

Rous S Karlson

An injector for delivery of a fluid into a stream of hot gas is disclosed. The injector has a valve body with an elongated chamber in fluid communication with an orifice. A valve seat surrounds the orifice. A valve plunger is disposed within the chamber, an end of the plunger being adapted to sealingly interengage the seat. The plunger is slidably movable between an open and a closed position to open and close the orifice. A fluid inlet and an outlet are disposed within the valve body to deliver fluid to an annular fluid passageway in the chamber adjacent to the valve seat. Fluid is circulated through the annular passageway to cool the valve and a portion of the fluid is expelled through the orifice when the orifice is opened. The plunger is biased into the closed position by a coil spring and movable into the open position by a solenoid actuator mounted atop the valve body. The injector is mounted on an exhaust conduit of an internal combustion engine with the orifice in fluid communication with the exhaust gases. A heat shield surrounding the orifice is interposed between the exhaust gases and the valve body, a radiant heat reflector is positioned between exposed parts of the injector and the exhaust conduit, and an atomizing hook is positioned in a spaced apart relation facing the orifice to control the dispersion characteristics of the expelled fluid.

Fluid-cooled injector

The invention provides means for controlling the rate of fuel injection of an accumulator injector of the type employing a pressure amplifying piston assembly. In one form of the invention, the injection rate is controlled by restricting the pressure decay in the amplifier chamber. In another form of the invention, means are provided for delaying the full opening of the injector valve needle after an initial valve opening.

Rate control in accumulator type fuel injectors

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Holyoke, MA, United States of America

Jeffrey P DiCarlo