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:
Oct. 09, 1984
Filed:
Dec. 01, 1982
Mineo Kashiwaya, Katsuta, JP;
Yoshiyuki Tanabe, Katsuta, JP;
Kinsaku Yamada, Katsuta, JP;
Hisato Tsuruta, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a fuel injection apparatus for internal combustion engine wherein a hot wire sensor is provided in an air bypass communicating the upstream side of a Venturi portion formed in an air-intake path with the Venturi portion, the amount of air flowing in the air bypass is controlled by an air-scaling valve driven by an electromagnetic device so that the output of the hot wire sensor converges to a set level, fuel is scaled by a fuel-scaling valve driven by the electromagnetic device in accordance with the change of the amount of air supplied to the engine, and the scaled fuel is continuously injected into the air-intake path, the set level is determined to a value which is smaller than a maximum output value of the hot wire sensor occurring when the air-scaling valve is fully opened during idling operation of the engine, thereby ensuring that the output of the hot wire sensor can converge to the set level during the idling operation.