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:
Apr. 26, 2005
Filed:
Jun. 11, 2003
David L. Porter, Westland, MI (US);
Garlan J. Huberts, Milford, MI (US);
Constantine Panagos, Saint Clair Shores, MI (US);
Guoming G. Zhu, Novi, MI (US);
Michael T. Nation, Ypsilanti, MI (US);
Bruce Wang, Troy, MI (US);
Kenneth L. Gould, Fayetteville, GA (US);
Kevin D. Moran, Trenton, MI (US);
David L. Porter, Westland, MI (US);
Garlan J. Huberts, Milford, MI (US);
Constantine Panagos, Saint Clair Shores, MI (US);
Guoming G. Zhu, Novi, MI (US);
Michael T. Nation, Ypsilanti, MI (US);
Bruce Wang, Troy, MI (US);
Kenneth L. Gould, Fayetteville, GA (US);
Kevin D. Moran, Trenton, MI (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
Internal combustion engine (ICE) on-plug ignition coils with transistor drivers located in powertrain control modules (PCM) or other remote locations are prone to high electrical and magnetic interference (EMI) emissions and are subject to interference from other components due to long connecting wires. Ionization detection circuits have even greater sensitivity to EMI because of their very low signal current levels (mioroampere). The present feature of the invention integrates both the coil driver transistor and ionization detection circuits into the on-plug ignition coil. By placing the circuit on top or on the side of the coil, the connection distance from the circuit to the secondary winding is minimized. Thus, the circuit is less susceptible to electrical and electromagnetic noise.