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:
May. 04, 2010
Filed:
Jul. 06, 2007
Masahiro Inagaki, Chiryu, JP;
Masahiro Inagaki, Chiryu, JP;
Denso Corporation, Kariya, JP;
Abstract
An ignition coil includes primary and secondary coils, center and outer cores, and an ion current detector for transmitting an ion current detection output. The center core has an axial upper end defining a center core upper end surface. The outer core has an axial upper end defining an outer core upper end surface. The center core upper end surface axially protrudes upwardly relative to the outer core upper end surface. The center core upper end surface is located at a stagger distance axially from the outer core upper end surface. The stagger distance is defined such that a detection period for residual magnetic noise in the ion current detection output falls within a system requirement period of a control unit.