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:
Dec. 30, 1980
Filed:
Apr. 26, 1979
Yasuhiko Ishida, Mishima, JP;
Toyota Jidosha Kogyo Kabushiki Kaisha, Toyota, JP;
Abstract
An internal combustion engine comprising a carburetor having a throttle valve arranged in the main intake passage. The throttle valve comprises a rigid valve body of a circular shape and at least one deformable valve plate of a semielliptical shape. The inner end of the valve plate is fixed onto the rear face of the valve body so that the peripheral outer edge of the valve plate projects outwardly from the peripheral outer edge of the valve body. When the opening degree of the throttle valve becomes small, the valve plate comes into engagement with the inner wall of the main intake passage and is bent to form a valve space between the valve body and the valve plate. An auxiliary intake passage is additionally provided. The inlet of the auxiliary intake passage is so arranged that it opens into the valve space which is formed when the opening degree of the throttle valve becomes small. The outlet of the auxiliary intake passage is connected to the main intake passage located downstream of the throttle valve at a position near the intake valve.