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Corona ignition system for internal combustion engines

An ignition system and internal combustion engine technology, applied in engine ignition, spark ignition device, corona discharge device, etc., can solve problems such as voltage overload

Active Publication Date: 2018-01-19
BORGWARNER BERU SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a voltage overload at the ignition electrode, which forms a corona discharge at the ignition electrode

Method used

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  • Corona ignition system for internal combustion engines

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Experimental program
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Embodiment Construction

[0018] figure 1 Shown is a combustion chamber 20 delimited by walls 21 , which are at ground potential. The corona igniter 1 protrudes into the combustion chamber 20 . The corona igniter 1 has an ignition electrode 1a which is surrounded over part of its length by an insulator 1b. The insulator 1b is surrounded by a metal outer conductor 1c. Ignition electrode 1 a surrounded by insulator 1 b and metallic outer conductor 1 c protrudes through wall 21 into combustion chamber 20 in an electrically insulated manner. If the igniter 1 does not have a separate outer conductor, the combustion chamber wall 21 on which the igniter 1 is placed can also serve as the outer conductor. The igniter 1 and the wall 21 of the combustion chamber 20 are components of a series resonant circuit, to which the capacitor 4 , the inductance 3 and the ohmic resistor 3 also belong. Of course, the series resonant circuit may have other inductances and / or capacitors and other structural elements known t...

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Abstract

The invention discloses a corona ignition system for an internal combustion engine. The corona ignition system is used for igniting fuel in a combustion chamber of an internal combustion engine, with a resonant circuit comprising an ignition electrode (1a); a high-frequency generator connected to the resonant circuit, to generate an AC voltage for exciting the resonant circuit; a DC voltage source to generate an input voltage for the high frequency generator. According to the invention, provision is made that a capacitor (13) is connected to the high-frequency generator in parallel with the DC voltage source, the capacitor compensating for the mismatch between the resonance circuit and the DC voltage source on transient oscillations of the resonance circuit .

Description

technical field [0001] The invention relates to a corona ignition system for fuel ignition in a combustion chamber of an internal combustion engine. Background technique [0002] US 2011 / 0114071 A1 discloses a corona ignition system by means of which a fuel-gas mixture can be ignited in a combustion chamber of an internal combustion engine by means of a corona discharge generated in the combustion chamber. The corona ignition system has an ignition electrode located in an insulator. The ignition electrode together with the insulator and the sleeve surrounding the insulator form an electronic capacitor. Said capacitor is part of an electric resonant circuit of a corona ignition device which is excited by a high frequency AC voltage, for example from 30 kHz to 50 MHz. This results in a voltage overload at the ignition electrode, so that a corona discharge forms at the ignition electrode. [0003] The high-frequency AC voltage is generated by a high-frequency generator whose...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02P23/04
CPCH01T19/00F02P3/01H01T13/50
Inventor 托尔斯滕·施雷默尔托马斯·霍舒
Owner BORGWARNER BERU SYST