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:
Jun. 13, 1978
Filed:
Aug. 05, 1976
Hitachi, Ltd., , JA;
Abstract
A gas mixture feed system provided therein with an exhaust gas recirculating passageway. The gas mixture feed system comprises: a throttle valve; a movable vane operationally associated with the throttle valve to regulate Venturi negative pressure; a variable stage type carburetor provided therein with a fuel metering device controlled by the movable vane; and an exhaust gas recirculating passageway for recirculating part of the exhaust gas of the internal combustion engine to the carburetor. The exhaust gas recirculating passageway has an opening within an intake passageway disposed between the movable vane of the carburetor and the throttle valve, whereby intake air and recirculating exhaust gas are uniformly mixed. Mounted in the exhaust gas recirculating passageway is a control valve which is mechanically connected to the movable vane so as to change the area of opening in accordance with the movement of the movable vane.