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:
Oct. 08, 2019
Filed:
May. 17, 2017
Brunswick Corporation, Lake Forest, IL (US);
Steven M. Anschuetz, Fond du Lac, WI (US);
Andrew J. Przybyl, Berlin, WI (US);
William P. O'Brien, Eden, WI (US);
Matthew W. Snyder, Fond du Lac, WI (US);
Robert R. Osthelder, Omro, WI (US);
Brunswick Corporation, Mettawa, IL (US);
Abstract
A marine engine operates according to first and second sets of mapped parameter values to achieve a first fuel-air equivalence ratio and maintains a stable output torque while transitioning to operating according to third and fourth sets of mapped parameter values to achieve a different fuel-air equivalence ratio. The first and third sets of mapped parameter values correspond to a first combustion parameter. The second and fourth sets correspond to a second combustion parameter. The transition includes: (a) transitioning from operation according to a current value of the first combustion parameter to operation according to a target value thereof; (b) transitioning from operation according to a current value of the second combustion parameter to operation according to a target value thereof; and (c) timing commencement or completion of step (b) and setting a rate of step (b) to counteract torque discontinuity that would otherwise result when performing step (a) alone.