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High-energy monomode plasma ignition system capable of detecting ionization

A technology of plasma ignition and detection circuit, which is applied in the direction of spark ignition controller, engine ignition, measurement device, etc., to achieve efficient and economical ionization measurement, improve measurement accuracy and ignition efficiency, and achieve the effect of accurate measurement

Active Publication Date: 2012-05-16
蓝冠动力技术(苏州)股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

U.S. Patent No. 5,321,978, Brandt et al. disclose a method for manufacturing voltage and generating ionizing current with an additional power supply, but the limitation of this method is that the additional power supply only provides the functions of manufacturing voltage and generating ionizing current

Method used

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  • High-energy monomode plasma ignition system capable of detecting ionization
  • High-energy monomode plasma ignition system capable of detecting ionization
  • High-energy monomode plasma ignition system capable of detecting ionization

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Embodiment Construction

[0011] The present invention is characterized in that high-energy plasma sparks are generated inside the cylinder, and then the ion current passing through the spark plug gap of the cylinder is detected, sampled and analyzed. When the high-voltage spark is formed in the gap of the spark plug, the additional circuit directly connected to the end of the spark plug will fully discharge the energy of the single energy source input by the blocking circuit, so as to improve the ignition efficiency, reduce the combustion emission level, and improve the thermal efficiency. The function of the blocking element is to ensure the one-way movement of the discharge current and protect the electronic components of the primary coil of the transformer from being affected by the high voltage of the secondary coil. In the present invention, the same energy source can discharge to the primary coil of the transformer, eventually causing a spark arc to be generated in the spark plug gap, and at the ...

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Abstract

The invention discloses a high-energy monomode plasma ignition system capable of detecting ionization, comprising a boosting transformer composed of a primary winding and a secondary winding; a single energy source connected with the primary winding, wherein the single energy source is a capacitor; a spark plug gap connected with the secondary winding, wherein the energy generated by the capacitor generates sparks in the spark plug gap after passing through the primary winding and the secondary winding; an additional circuit, wherein one end of the circuit is connected with the primary discharging end of the capacitor and the other end of the circuit is connected with the spark plug gap. The capacitance energy source can be used to generate primary high-voltage sparks and puncture the spark plug gap, and also provide subsequent currents to continue burning of the high-energy plasma arc. In comparison with the current ignition systems, the plasma ignition system combined with the ionization detection can produce needed high-energy sparks by just one capacitor to ignite gas-oil mixtures, and maintain the high voltage which generates the ionization current, and is convenient to be installed together with a coil ignition system on a spark plug. The plasma ignition system has advantages of small volume, high cost efficiency and so on.

Description

technical field [0001] The invention relates to a single-mode high-energy ignition system and method for determining the combustion state of each cylinder by measuring the ionization current in the gap on the spark plug of an internal combustion engine ignited by the spark. Background technique [0002] The relationship between spark plug gap ionization and engine misfire is well known in the automotive industry (see article "Flame Ion Density Measurement Using Spark Plug Voltage Analysis" by Miyata et al., "Measuring Flame Ion Density Using Spark Plug Voltage Analysis", Society of Automotive Engineers SAE Technical Article ID 930462). When the spark plug generates sparks, the gas around the spark plug is ionized, and the electrical conductivity in the spark plug gap also increases. After the engine starts, the voltage at both ends of the spark plug gap generates a current, that is, an ionization current. Measuring and analyzing the ionization current can provide informatio...

Claims

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Application Information

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IPC IPC(8): F02P3/08F02P17/12G01M15/00
Inventor 黄志民
Owner 蓝冠动力技术(苏州)股份有限公司
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