초록 ▼

The fuel injection nozzle (10) includes a nozzle tip (16) that is formed in the shape of a substantially symmetrical double-sided wing having a leading edge (40) for facing the oncomning air stream passing through the air inlet manifold of an internal combustion engine. The arcuate walls (46 and 48)

The fuel injection nozzle (10) includes a nozzle tip (16) that is formed in the shape of a substantially symmetrical double-sided wing having a leading edge (40) for facing the oncomning air stream passing through the air inlet manifold of an internal combustion engine. The arcuate walls (46 and 48) of the nozzle tip diverge on opposite sides of the cord line (44), and the internal conduit (22) guides the liquid nitrous oxide to move through the nose (50) of the nozzle tip and impinge with the flow of fuel moving through the adjacent internal conduit (24). A zone of low pressure is induced by the air movement (42) passing about the wing-shaped nozzle tip at a position behind the leading edge (40) of the nozzle tip, and the nitrous oxide tends to change states from liquid to gas as it emerges from the internal conduit (22) and moves through the exit port (52). This displaces the area where the nitrous oxide changes state from liquid to gas, so as to reduce the likelihood of forming frost and ice on the surfaces of the nozzle.

대표청구항 ▼

[ I claim:] [1.] An injection nozzle for mounting to an inlet manifold and supplying fuel and nitrous oxide to the combustion chambers of an internal combustion engine, said nozzle comprising:an elongated nozzle body including at one of its ends a nozzle tip for placement in an air stream inside the

[ I claim:] [1.] An injection nozzle for mounting to an inlet manifold and supplying fuel and nitrous oxide to the combustion chambers of an internal combustion engine, said nozzle comprising:an elongated nozzle body including at one of its ends a nozzle tip for placement in an air stream inside the manifold, at its other end a base for placement outside the manifold, and intermediate its ends external threads for connecting the nozzle body to a threaded bore of the manifold;said nozzle tip formed in the shape of a substantially symmetrical double-sided wing having a leading edge for facing an air stream, a cord line extending from said leading edge and arcuate walls diverging on opposite sides of said cord line, said arcuate walls forming a fuel delivery zone;a first conduit extending longitudinally through said nozzle body through said base to said tip adjacent said leading edge of said tip and turned at an angle away from said leading edge and opening toward said fuel delivery zone for moving nitrous oxide in its liquid state toward said fuel delivery zone in the direction extending away from said leading edge of said tip;a second conduit extending longitudinally through said nozzle body from said base to said tip, substantially parallel to said first conduit, and positioned on the remote side of said first conduit from said leading edge and opening toward the fuel delivery zone;said first and second conduits each being of substantially constant cross-sectional areas along their lengths extending through said body toward said tip;a jet fitting releasably mounted to the base of said housing in fluid communication with each of said first and second conduits, said jet fittings each including a flow constriction to control the flow of fluids through said first and second conduits;fuel supply means for supplying fuel in a liquid state to said second conduit at greater than atmospheric pressure; andnitrous oxide supply means for supplying nitrous oxide in a liquid state at a pressure sufficient to retard the change of state of the nitrous oxide until it approaches said fuel delivery zone.