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, 2021
Filed:
Mar. 29, 2018
Woodward, Inc., Fort Collins, CO (US);
David C. Petruska, Fort Collins, CO (US);
Sai Venkataramanan, Fort Collins, CO (US);
Suraj Nair, Fort Collins, CO (US);
Mark Notarfrancesco, Fort Collins, CO (US);
Monte Wegner, Bellvue, CO (US);
Andy Vlietstra, Fort Collins, CO (US);
Woodward, Inc., Fort Collins, CO (US);
Abstract
The subject matter of this specification can be embodied in, among other things, a method that includes receiving a collection of measurements of electric current amplitude in a primary winding of an engine ignition system having the primary winding and a spark plug, identifying an ignition start time, identifying an inflection point based on the plurality of measurements, determining an inflection point time representative of a time at which the identified inflection point occurred, determining a spark start time based on an amount of time between the ignition start time and the inflection point time, and providing a signal indicative of the spark start time.