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. 19, 1991
Filed:
Nov. 21, 1989
Danny O Wright, Newport News, VA (US);
Russell J Wakeman, Newport News, VA (US);
Siemens-Bendix Automotive Electronics L.P., Troy, MI (US);
Abstract
Apparatus and method for integrating mass air flow for a specified cylinder event in the intake tract of an internal combustion engine. The respective outputs of a mass air flow sensor and a directional air flow sensor are used to determine an accurate net integrated value of mass air flow. The magnitude of mass air flow is sampled and electronically integrated several times during each specified engine event in either a positive or negative sense (depending upon air flow direction) to obtain a net mass air flow value, which is then input to a A/D converter and then a microprocessor in an engine electronic control unit for use in engine management control.