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. 17, 1981
Filed:
Mar. 21, 1979
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
A multi-cylinder engine comprising an intake manifold forming therein a main and an auxiliary intake passage, which are equipped with a main and an auxiliary carburetor, respectively. A second throttle valve is provided for each cylinder. Each of the secondary throttle valves is arranged in the respective manifold branch forming therein the main intake passage. Each of auxiliary branch intake passages branched off from the auxiliary intake passage opens into the respective intake port at a position near the intake valve. A primary throttle valve is arranged in the auxiliary intake passage and opened in accordance with increase in level of the load of an engine. The secondary throttle valves are opened after the opening degree of the primary throttle valve is increased beyond a predetermined opening degree.