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. 01, 2008
Filed:
Aug. 15, 2006
Tadaharu Nishimura, Oobu, JP;
Tadaharu Nishimura, Oobu, JP;
Denso Corporation, Kariya, Aichi-pref., JP;
Abstract
A timer module in an ECU has an angle counter and a timer counter. A value counted by the angle counter indicates a crank angle of a crankshaft. Under the control of the termination to output an ignition pulse signal to an igniter, the ECU inverts the level of the ignition pulse signal to Low level (as an inactive mode) when a first comparator outputs an angle comparison matching signal after a value of the angle counter reaches a pulse OFF angle 'an' count value of the angle counter, and when a second comparator outputs a time comparison matching signal after the value of the time counter reaches a time 't' as an elapsed time of a regular time length “TH” counted from a pulse ON time “t”. Thus, even if the crank angle of the crankshaft reaches the pulse OFF angle “an” before the timing “t”, the ECU keeps High level of the ignition pulse signal until the timing “t