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. 06, 1990
Filed:
Dec. 12, 1988
Hiroko Maekawa, Himeji, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A fuel injector assembly for an internal combustion engine of an automobile including an alcohol sensor is disclosed. The assembly comprises a hollow cylindrical fuel delivery pipe having nozzles formed on the circumferential side wall thereof. A pair of hollow cylindrical metallic plates having a plurality of radially extending throughholes are dispsed coaxially in the fuel delivery pipe to form a small gap therebetween, through which the fuel supplied from the fuel tank by a fuel bump flows before being injected from the valves of the nozzles into the intake manifold of the engine. The throughholes in the two metallic plates are axially displaced and some of the throughholes in the metallic plate of the larger diameter are axially and circumferentially aligned with the nozzles. The change of the capacitance of the capacitor formed by the pair of metallic plates and the fuel flowing therebetween is measured to determine the variation of the dielectric constant of the fuel. The alcohol content of the fuel mainly consisting of gasoline is computed from the dielectric constant thereof. Further, the amount of the fuel injected from the valves are controlled in accordance with the alcohol content.