Jet nozzle for spraying atomized gas with air
A technology of jet atomization and gas nozzles, which is applied to fuel injection devices to bring fuel into the direction of the engine and engine components through high-pressure gas, which can solve the problems of spray uniformity, unfavorable combustion and emission, and achieve small particle size and uniform spray Effect
Active Publication Date: 2022-04-12
SHANGHAI UNIV OF ENG SCI
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Problems solved by technology
However, the larger spray particle size in the early stage of entrained air injection is not good for the uniformity of the spray and the combustion emission in the later stage.
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[0020] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] Such as figure 1 with figure 2 As shown, in one embodiment, an entrainment jet atomizing gas nozzle includes an armature 400, an electromagnet 500 and an elastic member 600 that respectively provide suction and thrust for the armature 400, as well as an injector body 100 and a needle valve 300, the injector body 100 ...
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The nozzle comprises an armature, an electromagnet, an elastic piece, an ejector body and a needle valve, the electromagnet and the elastic piece are used for providing suction force and thrust for the armature respectively, the ejector body is provided with a through hole, the needle valve is installed in the through hole in a sliding mode, the armature is fixedly connected with the needle valve, and the needle valve is provided with an oil bag, a longitudinal channel and a plurality of transverse channels which are communicated. The oil bag is located at the bottom of the longitudinal channel, the transverse channels are close to the needle valve head and penetrate through the side wall of the needle valve, and a plurality of through micropores are formed in the side wall of the oil bag. According to the air-entrained spraying atomized gas nozzle, when the electromagnet is electrified, the armature is attracted to drive the needle valve to be opened outwards, gas enters the longitudinal channel in the valve element to purge liquid fuel oil accumulated in the oil bag, and the liquid fuel oil flows out of the micropores of the oil bag. Meanwhile, gas flows through the transverse channel from the longitudinal channel and is sprayed out of an annular gap formed after the needle valve is opened outwards, and the liquid fuel oil flowing out of the oil bag is smashed into fine particles through high-speed gas flow. The formed fuel spray is small in particle size and uniform in spray.
Description
technical field [0001] The invention relates to the field of entrained air nozzles, in particular to an entrained air jet atomizing gas nozzle. Background technique [0002] Energy saving and emission reduction is an important way to achieve the goal of carbon peak and carbon neutrality. In the field of energy and power, further improvement of engine in-cylinder combustion technology can effectively achieve the double carbon goal in advance. Electronically controlled fuel injection technology, variable valve and supercharging technology provide infinite possibilities for the development of new engine combustion technology. Fuel injection technology is the key to the development of the combustion system, which determines the technical route and development plan of the engine development. [0003] The traditional entrainment injection technology uses the liquid fuel to be injected into the compressed air upstream of the electronically controlled air nozzle through the electro...
Claims
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IPC IPC(8): F02M67/12F02M67/02
CPCY02T10/30
Inventor 郑金保陈旭缪雪龙狄亚格杨慧明莫韬
Owner SHANGHAI UNIV OF ENG SCI