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Plasma combustion-supporting exciter with dual working modes of combustion supporting and ignition

A dual working mode, plasma technology, applied in the direction of plasma, engine ignition, machine/engine, etc., can solve the problems of poor ignition reliability, low ignition energy utilization rate, small ignition energy, etc. Ionization and ignition effect, high working pressure effect

Inactive Publication Date: 2019-02-15
DALIAN NATIONALITIES UNIVERSITY
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  • Summary
  • Abstract
  • 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 when the existing spark plug structure is applied to large-space combustion chamber engines and natural gas engines, the present invention provides a plasma with dual working modes of combustion-supporting and ignition Combustion booster

Method used

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  • Plasma combustion-supporting exciter with dual working modes of combustion supporting and ignition
  • Plasma combustion-supporting exciter with dual working modes of combustion supporting and ignition
  • Plasma combustion-supporting exciter with dual working modes of combustion supporting and ignition

Examples

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Embodiment 1

[0021] A plasma combustion-supporting exciter with dual working modes of combustion-supporting and ignition, including a central anode 1, a ground electrode 2, a ring-shaped anode 5 and an insulating positioning sleeve 8; the insulating positioning sleeve 8 has a through hole for installing the central anode 1 and the annular groove for installing the annular anode 5, the upper end of the insulating positioning sleeve 8 has an outwardly protruding mounting platform 10, and the upper end of the grounding electrode 2 has a mounting groove that is connected with the mounting platform 10, and the insulating positioning sleeve 8 is located on the grounding electrode 2 internal.

[0022] The insulating positioning sleeve 8 includes an inner wall 12 and an outer wall 11. The inner wall 12 surrounds and forms a through hole. There is an annular groove between the inner wall 12 and the outer wall 11. The mounting table 10 is located on the top of the outer wall 11. There is a positionin...

Embodiment 2

[0034] This embodiment is a control strategy applied to piston engines according to the present invention, especially to piston engines with reciprocating or rotary pistons.

[0035] 1. The crankshaft position sensor judges the crankshaft position. If the current crankshaft angle has not reached the set value, continue to judge. If it has reached the set value, the oxygen sensor judges the equivalent ratio Φ at this time, and the air inlet A9 and the air inlet Fuel and air are fed into B3 respectively, and this time is recorded as time t0; starting from time t0, the time when the fuel-air mixture fills the ionization space B16 for the first time is recorded as time t1.

[0036] 2. If Φ<1, the ECU sends a high-voltage power supply command to the power supply (for example: 15,000-20,000 volts); the power supply supplies high-voltage power to the center electrode 1 at time t1, forming an arc discharge in the ionization space B16, and fuel-air mixing The gas is ignited, and the fl...

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Abstract

The invention relates to a plasma combustion-supporting exciter with dual working modes of combustion supporting and ignition, and belongs to the field of engines. The plasma combustion-supporting exciter includes a central anode, a grounding electrode, a ring-like anode and an insulating locating sleeve, the insulating locating sleeve is provided with a through hole for installing the center anode and a ring-like groove for installing the ring-like anode, the upper end of the insulating locating sleeve is provided with a mounting platform extending outwards, the upper end of the grounding electrode is provided with a mounting groove connected with the mounting platform in a matched mode, and the insulating locating sleeve is located inside the grounding electrode. According to the structure of the plasma combustion-supporting exciter with the dual working modes of combustion supporting and ignition, a combination discharge mode of dielectric barrier discharge-arc discharge is realized, the advantages of wide thin-burning limit of the non-equilibrium plasma, high reactivity, high working pressure of thermal equilibrium plasma and the like can be combined together, and the purposesof high energy and stable ignition are realized within a wide range of fuel air ratios.

Description

technical field [0001] The invention relates to the field of engines, in particular to a plasma combustion-supporting exciter with dual working modes of combustion-supporting and ignition. 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 compressed natural gas is increasing; in the field of ship power, ships powered by compressed natural gas and liquefied natural gas have become a 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 operation, which leads to a series of problems such as complex system, increased cost, and decreased reliability. Therefore, it...

Claims

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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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