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Supply circuit for a corona ignition device

A technology of power circuit and ignition device, which is applied to circuits dedicated to spark gaps, spark ignition devices, corona discharge devices, etc., can solve expensive problems and achieve the effect of improving power supply safety

Active Publication Date: 2018-01-09
BORGWARNER BERU SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Supply circuit for a corona ignition device
  • Supply circuit for a corona ignition device
  • Supply circuit for a corona ignition device

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Embodiment Construction

[0017] figure 1 A combustion chamber 1 defined by grounded walls 2 , 3 and 4 is shown. A corona ignition with an ignition tip 5 projects from above into the combustion chamber 1 . An ignition tip 5 is located at the end of a central electrode which is encapsulated over at least part of its length by an insulator 6 by which it is electrically insulated and guided through the upper wall 2 and into the combustion chamber 1 . The central electrode and the walls 2 to 4 of the combustion chamber 1 are part of a series resonant circuit 7 which also includes a capacitor 8 and an inductance 9 . Of course, the series resonance circuit 7 may exhibit additional inductors and / or capacitors and other components known to the expert as possible components of the series circuit.

[0018] To excite the resonant circuit 7 , a high-frequency generator 10 is provided which is fed from a power supply 11 and which comprises, for example, a transformer 12 with a center tap 13 on its primary side, w...

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Abstract

Described is a supply circuit for a corona ignition device, with an input for connection to a direct voltage source, a first converter, a second converter, and an output for connecting a load. The twoconverters each generate an output voltage, which is provided on its secondary side and exceeds the input voltage. The two converters each contain a transformer that galvanically separates the primary side of the converter from its secondary side. At least one transistor switch is arranged between the input and primary side of the two converters for pulse width-modulation of the input voltage. The primary side of the second converter is connected in parallel with the primary side of the first converter, the secondary side of the second converter is connected in series with the secondary sideof the first converter, the secondary sides of the two converters are each bridged in this series connection by at least one diode, so that an output voltage can be provided at the output of the supply circuit even given a failure of one of the two converters. The invention also describes a corona ignition system having the supply circuit.

Description

technical field [0001] The invention relates to a power supply circuit for a corona ignition device and a corona ignition system with a corona ignition device and such a power supply circuit. Background technique [0002] US 2004 / 0129241 A1 describes the ignition of fuel in a combustion chamber of an internal combustion engine by means of a corona discharge generated in the combustion chamber. Such corona ignition devices consist of a central electrode held by an insulator, which forms a capacitor with the walls of the combustion chamber at mass potential and providing the opposite electrode, or an outer conductor enclosing the insulator. The insulator surrounding the central electrode and the combustion chamber with its contents act as the dielectric of the capacitor. Depending on the stroke of the piston, the combustion chamber contains air or a fuel-air mixture or exhaust gases. [0003] This capacitor is part of an electric resonant circuit which is excited by a high f...

Claims

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Application Information

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IPC IPC(8): F02P3/04
CPCF02P3/01H01T19/00H02M3/285H02M3/3372H01T15/00H01T13/44H02M1/0077H02M1/325F02P23/04F23Q3/006H01F38/12H01T13/20
Inventor 托马斯·霍舒汉斯-彼得·埃兹科恩彼得·沙弗
Owner BORGWARNER BERU SYST