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Application method of plasma igniter with gradually-expanded grounding electrode outlet structure

A technology of grounding electrode and outlet structure, applied in the direction of plasma, engine ignition, electrical components, etc., can solve the problems of poor ignition reliability, low ignition energy utilization rate, and small ignition energy, and achieve wide lean burn limit, improve ionization and Ignition effect, effect of high working pressure

Inactive Publication Date: 2019-01-22
DALIAN NATIONALITIES UNIVERSITY
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Problems solved by technology

[0005] In order to solve the problems of low ignition energy, poor ignition reliability, and low utilization rate of ignition energy when the existing heat balance plasma igniter technical solution is applied to large-space combustion chamber engines and natural gas engines, the application provides a gradually expanding Method of using plasma igniter with ground electrode outlet structure

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  • Application method of plasma igniter with gradually-expanded grounding electrode outlet structure
  • Application method of plasma igniter with gradually-expanded grounding electrode outlet structure
  • Application method of plasma igniter with gradually-expanded grounding electrode outlet structure

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments: taking this as an example to further describe and illustrate the present application.

[0029] Such as Figure 1-5 As shown, this embodiment provides a plasma igniter with a gradually expanding ground electrode outlet structure, including a central anode, a ring-shaped anode, a ground electrode, an anode fixing bolt, an insulating positioning sleeve, and an insulating positioning sleeve pressing plate; the central The anode is located in the center of the plasma igniter. It has a hollow structure and is installed in the anode insulating sleeve. Its structure is a columnar body with a thin upper part and a thicker lower part. The lower end of the central anode is provided with several oblique air intake holes arranged in a circumferential direction and inclined downward, which are used to introduce a small amount of highly active particl...

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Abstract

The invention discloses an application method of a plasma igniter with a gradually-expanded grounding electrode outlet structure. The application method specifically comprises that a power source firstly supplies a ring-shaped anode at low voltage but not powers a central electrode; at low voltage, dielectric barrier discharge can take place between the ring-shaped anode and an insulating positioning sleeve as well as between the insulating positioning sleeve and a grounding electrode; air and fuel which are continuously inlet via an air inlet a and an air inlet b respectively can form a downward cyclone inside an ionization space a, non-equilibrium plasmas flow via a reducing acceleration section into an ionization space b, and then the air inlet a and the air inlet b are closed; the ring-shaped anode is powered off, then the power source powers the central anode at high voltage; under the action of high voltage, arc discharge takes place between the grounding electrode and the central anode; meanwhile, air is inlet into the cooling air channel inside the central anode without being involved in ionization reaction and is used for cooling down the electrode and disturbing a flow field outside a jet nozzle to improve combustion.

Description

technical field [0001] The invention relates to a method for using a plasma igniter, in particular to a method for using a plasma igniter with a gradually expanding ground electrode outlet structure. Background technique [0002] As a clean energy, natural gas has been widely used as engine fuel. In the field of vehicle power, the number of passenger cars and heavy-duty vehicles fueled by CNG is increasing; in the field of ship power, CNG and LNG-powered ships have become the key research direction in the "Made in China 2025" plan. Compared with gasoline, natural gas as a gas fuel requires greater ignition energy, which makes it difficult to use a single spark plug to ignite natural gas even for small-bore vehicle natural gas engines in actual use, so gasoline has to be used to ignite the engine. normal work. This has led to a series of problems such as system complexity, cost increase, and reliability decrease. Therefore, it is necessary to adopt a new ignition technolog...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P23/04H05H1/24H05H1/48
CPCF02P23/04H05H1/2406H05H1/48
Inventor 宋鹏
Owner DALIAN NATIONALITIES UNIVERSITY
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