Working method of igniter with fuel passage and hollow anode structure

Abstract

The invention discloses a working method of an igniter with a fuel passage and a hollow anode structure. The working method specifically comprises the following steps that a power source firstly supplies power to a plurality of short anodes at a low voltage U1, and a long anode is not electrified at the moment; dielectric barrier discharge is generated at the low voltage, fuel molecules located inan ionization space a are ionized under the action of an external electric field to generate non-equilibrium plasma composed of free electrons and positively charged positive ions; the power source supplies power to the long anode at a higher voltage U2; arc discharge occurs between the long anode and a grounding electrode under the action of the high voltage; when the long anode is electrified,an air channel in the long anode is fed with air; and small amount of high-activity gas formed in an ionization space b enters the air channel through an air inlet inclined hole. According to the method, the problems that an existing heat balance plasma igniter is small in ignition energy, poor in ignition reliability, and low in ignition energy utilization rate when the heat balance plasma igniter is applied to an engine of a large-space combustion chamber and a natural gas engine are solved.

Description

technical field [0001] The invention relates to a working method of a plasma igniter, in particular to a working method of an igniter with a fuel channel and a hollow anode 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 gaseous 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 other fuels have to be used to ignite or set a preset. The combustion chamber is the way to make the engine work properly. This has led to a series of problems such as system complexity, cost increase, and reliability decrease. Therefor...

AI Technical Summary

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 fuel channel And the working method of the igniter with hollow anode structure

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