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:
Nov. 17, 1998
Filed:
Jul. 22, 1997
Mark A Ruman, Fond du Lac, WI (US);
Brunswick Corporation, Lake Forest, IL (US);
Abstract
An engine control system is provided with two sets of gain factors for use in conjunction with a PID control system. When a gear selection mechanism is in a steady state, a first set of gain factors is used so that the engine control system is less responsive and the engine operates more smoothly. When the gear selection mechanism is being moved from a neutral position to either forward or reverse gear or vice versa, a second set of gain factors are substituted for the first set so that the engine control system will be more responsive and the sudden change in the load on the engine will not cause a stall condition or a sudden increase in the RPM. This technique can typically be employed in a proportional, integral, and differential (PID) control system, but alternative control systems can also benefit from its use.