Nozzle

About: Nozzle is a research topic. Over the lifetime, 158675 publications have been published within this topic receiving 893026 citations. The topic is also known as: spout.

Suction cleaning apparatus

Abstract: My invention relates to suction cleaning apparatus, more particularly to an improved attachment adapter for suction cleaner nozzles whereby a flexible suction hose provided with a hand nozzle or tool may be detachably connected to a suction cleaner nozzle for the cleaning of upholstery, curtains,...

Exhaust emission control device of internal combustion engine

Abstract: To provide an exhaust emission control device of an internal combustion engine able to well atomize a reducing agent and ensure supply of combustion air. Since a controller of the exhaust emission control device also controls a nozzle opening degree of a variable geometry turbocharger for purpose of spraying a urea water, even in the state where the engine works in a low load range of T 1 to T 2 where supercharging pressure normally can not be increased, supercharging pressure P suitable to atomization of the urea water can be obtained by controlling the nozzle opening degree of the variable geometry turbocharger to be closer to a closing side compared to the conventional art (shown by the chain double-dashed line), while the urea water can be securely atomized by a part of the supercharged air. Further, by increasing the supercharging pressure up to the value P, combustion air supplied to the engine is increased, therefore favorable combustion can be realized, and generation of particulates and exhaust of unburned fuel can be reduced.

Noise suppressing exhaust mixer assembly for ducted-fan, turbojet engine

Abstract: To suppress jet noise emanating from a ducted-fan turbojet engine, an improved exhaust mixer assembly is disclosed that is mounted between the engine and the exhaust nozzle and that mixes the flow of high-velocity primary gases (turbine exhaust) with the lower-velocity air from the fan duct in a manner that achieves a significant reduction in the proportion of noise-causing high velocity gases while maintaining approximately the same thrust from the nozzle as other mixer-equipped engines. The mixer assembly includes an annular sleeve, a bulb-shaped plug disposed concentrically within the sleeve, and an annular corregugated mixer duct coaxially positioned between the plug and sleeve wherein these components are arranged so as to receive the primary and fan flows and separately redirect these flows within the assembly so that the flow of primary gases is rearwardly divergent while the flow of fan air is rearwardly convergent. As the primary and fan flows pass through a mixing plane at the aft terminus of the mixer duct, they intersect in a crossing pattern resulting from their divergent-convergent flow paths which yields faster and more complete mixing of the flows before they are discharged from the nozzle. The shaping and dimensioning of the sleeve, plug, and mixer duct are such that optimum mixing, and thus maximum suppression of noise, are achieved without introducing any excessive pressure losses in the mixer assembly and nozzle that otherwise would significantly diminish thrust.