초록 ▼

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 sealin

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.

대표청구항 ▼

[ What is claimed is:] [1.]1. A fluid cooled injector comprising:a valve body having a chamber arranged therein;an orifice located in said valve body at a first end of said chamber;a valve seat positioned within said chamber surrounding said orifice;a valve member arranged within said chamber and be

[ What is claimed is:] [1.]1. A fluid cooled injector comprising:a valve body having a chamber arranged therein;an orifice located in said valve body at a first end of said chamber;a valve seat positioned within said chamber surrounding said orifice;a valve member arranged within said chamber and being sealingly interengagable with said valve seat to close said orifice, said valve member being movable between a closed position wherein said valve member sealingly interengages said valve seat, and an open position, wherein said valve member is removed from interengagement with said valve seat to open said orifice;an actuator mounted on said valve body and connected to said valve member for moving said valve member between said closed and open positions;a fluid inlet and a fluid outlet extending through said valve body and communicating with said chamber, said fluid outlet intersecting said chamber at a position adjacent to said valve seat; andsaid inlet and said outlet providing a flow path for fluid through said chamber independent of the position of said valve member, thereby cooling said injector, a portion of the fluid being released from said chamber through said orifice when said valve member is in said open position.