Patent · US Active

Method and device for monitoring a combustion process in an internal combustion engine

US8061189B2 · kind B2 · utility

1Cited by

11References

19Claims

0Family size

Assignee

CONTINENTAL AUTOMOTIVE GMBH · DE

Inventors

Georg Bachmaier · Birkenfeld, DE
Robert Baumgartner · Bad Mergentheim, DE
Sven-Michael Eisen · Regensburg, DE
Daniel Evers · Oviedo, US
Reinhard Freitag · Birkenfeld, DE
Thomas Hammer · Iserlohn, DE
Oliver Hennig · Löwenstein, DE
Klaus Pistor · Neubiberg, DE

Key dates

Filing date	May 29, 2007
Grant date	Nov 22, 2011
Priority date	—
Expiry date	Nov 5, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02P17/12
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

For monitoring a combustion process in an internal combustion engine wherein a fuel-air mixture is ignited with a high-frequency plasma it is provided to determine the impedance of the plasma. A high-frequency signal is applied to the resonator with a capacity that is so low that no arcing-over forms on the electrodes and the high-frequency current and the high-frequency voltage are measured. The impedance of the ignited mixture is determined from the high-frequency current and the high-frequency voltage.

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