The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 2006
Filed:
Jun. 11, 2003
Garlan J. Huberts, Milford, MI (US);
Michael T. Nation, Ypsilanti, MI (US);
Guoming G. Zhu, Novi, MI (US);
Kevin D. Moran, Trenton, MI (US);
Bruce Wang, Troy, MI (US);
Kenneth L. Gould, Fayetteville, GA (US);
Garlan J. Huberts, Milford, MI (US);
Michael T. Nation, Ypsilanti, MI (US);
Guoming G. Zhu, Novi, MI (US);
Kevin D. Moran, Trenton, MI (US);
Bruce Wang, Troy, MI (US);
Kenneth L. Gould, Fayetteville, GA (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
Two embodiments of an integrated ionization detection circuit and ignition coil driver, an ASIC and a single electronic package, are disclosed. The apparatuses reduce the cost and complexity of an in-cylinder ionization detection system by combining like functionality into one ASIC or electronic module easing packaging constraints. In both embodiments, a current sink is used. The current sink removes noise in the form of voltage splices. The voltage spikes are high voltage, but of short duration. The current sink prevents these spikes from turning on the IGBT. However, the current sink allows the IGBT command signal to pass. This device also comprises a switch whereby ionization current and coil primary current are multiplexed.