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:
Mar. 09, 2004
Filed:
Dec. 06, 2001
Blake R. Suhre, Neenah, WI (US);
Robert E. Haddad, Oshkosh, WI (US);
Brunswick Corporation, Lake Forest, IL (US);
Abstract
An engine control system calculates air velocity through a throttle body as a function of mass air flow through the throttle body, air density, and the effective area of air flow through the throttle body as a function of throttle plate position. Mass air flow is calculated as a function of the effective area through the throttle body, barometric pressure, manifold pressure, manifold temperature, the ideal gas constant, and the ratio of specific heats for air. By controlling the throttle plate position as a dual function of throttle demand, which is a manual input, and air velocity through the throttle body, certain disadvantages transient behavior of the engine can be avoided.