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:
Apr. 14, 1987
Filed:
Oct. 17, 1985
Robert A Kraus, Santa Ana, CA (US);
Edmund J Kraus, Santa Ana, CA (US);
Other;
Abstract
Apparatus for maintaining the correct air/fuel mixture in internal combustion engines. In the preferred embodiment, the density of atmospheric air at concurrent temperature and barometric pressure conditions is sensed by an acoustical transducer whose electric output is electronically correlated with known volumetric flow rate data; thereby obtaining the mass flow rate of engine aspirated air. The acquired air mass flow-rate data, together with other data pertaining to concurrent engine load and condition is utilized to achieve at any throttle position a correct air/fuel ratio. In an alternate embodiment, the mass flow rate of engine aspirated air is obtained by utilizing the basic air density sensing transducer in measuring the suction pressure at the venturi throat within an engine incorporated throttle body device, while simultaneously sensing, and measuring continuously occurring changes in atmospheric conditions.