Patent · US Active

Method for energizing an HF resonant circuit which has an igniter as a component for igniting a fuel-air mixture in a combustion chamber

US8973561B2 · kind B2 · utility

2Cited by

4References

12Claims

0Family size

Assignee

BORGWARNER BERU SYSTEMS GMBH · DE

Inventors

Ganghua Ruan · Stuttgart, DE
Gerd Braeuchle · Gundelsheim, DE
Markus Mueller · Walldorf, DE

Key dates

Filing date	Aug 22, 2011
Grant date	Mar 10, 2015
Priority date	—
Expiry date	Sep 6, 2033

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P23/04
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

The invention relates to a method for energizing an HF resonant circuit which contains an igniter as a component for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine by means of a corona discharge, wherein the igniter comprises an ignition electrode and an insulator surrounding the ignition electrode, by means of a DC-AC inverter which is excited by successive current pulses which each last while a switch controlled by a control circuit is in its conducting switching state. It is provided according to the invention that the switch is actuated when an instantaneous value of an alternating current or an alternating current voltage excited in the HF resonant circuit falls below a first switching threshold (A−, B−, C−) and the switch s actuated when the instantaneous value of the alternating current or the alternating current voltage excited in the HF resonant circuit exceeds a second switching threshold (A+, B+, C+).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.