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:
Feb. 03, 1981
Filed:
May. 01, 1979
Alvin D Toelle, Fenton, MI (US);
The Bendix Corporation, Southfield, MI (US);
Abstract
A closed loop fuel management system is disclosed in which an improved dual integral controller provides both transient and gross correction for an electronic fuel injection system operating at a predetermined air/fuel ratio. The controller has cascaded dual integrators including a primary integrator with a relatively fast integration rate utilized for transient control and a secondary integrator with a relatively slow integration rate utilized for gross control such as ageing effects and altitude compensation. The controller responds to several engine operating conditions and to rich fuel power demands to switch from closed loop to open loop control while maintaining the gross system correction provided by the operating point of the secondary integrator.