Double-discharge plasma igniter with hollow ventilation anodes

Abstract

The invention discloses a double-discharge plasma igniter with hollow ventilation anodes. The double-discharge plasma igniter with the hollow ventilation anodes comprises an upper anode, a lower anode, an upper grounding electrode, a lower grounding electrode, an anode insulating sleeve and a grounding electrode insulating sleeve, wherein the upper grounding electrode and the lower grounding electrode are connected; the anode insulating sleeve is arranged inside the upper grounding electrode; the upper anode is embedded into the wall of the anode insulating sleeve; the lower anode is composedof a body section a and a body section b, the body section a is arranged inside the mounting hole of the anode insulating sleeve, and the body section b is mounted inside the lower grounding electrode; the connecting part between the lower grounding electrode and the upper grounding electrode is provided with a groove, which is formed in the inner wall of the lower grounding electrode; the grounding electrode insulating sleeve is mounted inside the groove. The double-discharge plasma igniter with the hollow ventilation anodes can combines the advantages of wide lean combustion limit and high reaction activity of non-equilibrium plasmas and the advantages of high working air pressure and the like of thermal equilibrium plasmas to achieve the aim of high-energy and stable ignition within a wide fuel-air ratio range.

Description

technical field [0001] The invention relates to a plasma igniter, in particular to a double-discharge mode plasma igniter with a hollow vented anode. 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. Therefore, it is necessary to adopt a new ...

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, this application provides a hollow ventilator Dual discharge mode plasma igniter for anode

Images