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A control method for plasma igniter with double discharge mode

A plasma and control method technology, applied in the control field of plasma igniter, can solve the problems of low utilization rate of ignition energy, low ignition energy, poor ignition reliability, etc., achieve high working pressure, wide lean burn limit, and improve combustion Effect

Active Publication Date: 2021-05-04
DALIAN NATIONALITIES UNIVERSITY
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low ignition energy, poor ignition reliability, and low utilization rate of ignition energy of existing thermal balance plasma igniters, this application provides a control method for plasma igniters with dual discharge modes

Method used

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  • A control method for plasma igniter with double discharge mode
  • A control method for plasma igniter with double discharge mode
  • A control method for plasma igniter with double discharge mode

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: taking this as an example to further describe and illustrate the present application.

[0023] Such as Figure 1-3 As shown, this embodiment provides a double discharge mode plasma igniter, including an upper anode, a lower anode, a ground electrode, an anode insulating sleeve and a fixing bolt; the upper anode is located at the center of the igniter, and is installed and fixed on the anode insulating sleeve inside; the lower anode has a hollow structure and is installed in the installation hole in the anode insulating sleeve; the anode insulating sleeve has two functions, the first one is used to fix the upper anode and the lower anode and realize the insulation between the two, The second is that the lower end of the anode insulating sleeve can be used to create an isolation zone to avoid the discharge of the upper anode and the groun...

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Abstract

The invention discloses a control method of a double-discharge mode plasma igniter, including: a control method on a piston engine, specifically: a crankshaft position sensor judges the crankshaft position, and if the current crankshaft rotation angle does not reach the set value, continue Judgment; if the set value has been reached, the ECU will output a low-voltage discharge command to the power supply; after the power supply receives the discharge command, it will output a certain voltage U1 to the upper anode, which is recorded as time t1; at this time, the upper anode and the ground electrode are discharged. A dielectric barrier discharge is formed in the ionization space a, and the gas in the ionization space a is ionized into a non-equilibrium plasma, and then the ionized gas moves downward, and enters the ionization space b through the isolation area after Δt time; this method solves the problem of existing heat balance The plasma igniter has problems such as low ignition energy, poor ignition reliability, and low utilization rate of ignition energy.

Description

technical field [0001] The invention relates to a control method of a plasma igniter, in particular to a control method of a double discharge mode plasma igniter. 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02P23/00H05H1/24H05H1/28H05H1/34
CPCF02P23/00H05H1/2406H05H1/28H05H1/34
Inventor 宋鹏
Owner DALIAN NATIONALITIES UNIVERSITY
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