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. 05, 1985
Filed:
Jul. 26, 1984
Neville H Daniel, Four Oaks, GB;
Hugh M Duncan, Moseley, GB;
Austin Rover Group Limited, , GB;
Abstract
The invention is concerned with a control system for an air/fuel ratio measurement and adjustment system for an internal combustion engine. In order to limit operation of the measurement and adjustment system to occasions when adjustment is likely to be necessary, an altitude sensing system is provided and the air/fuel ratio measurement and adjustment system is operated in response to measurement of a change in altitude. Altitude measurement is by way of measurement of absolute pressure in the engine inlet manifold and relating the measured pressure to an expected inlet manifold pressure at sea level for the current conditions of throttle opening and engine speed.