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:
Jul. 28, 2020
Filed:
Apr. 15, 2019
Toyota Jidosha Kabushiki Kaisha, Aichi-ken, JP;
Shintaro Hotta, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Aichi-ken, JP;
Abstract
An internal combustion engine includes a plurality of cylinders, and these cylinders are divided into a first group where the air-fuel mixture is burned in the entire operating region and a second group where the air-fuel mixture is not burned in part of the operating region. The engine comprising: an intake opening opened and closed by an intake valve; an exhaust opening opened and closed by an exhaust valve; and a mask part having a wall surface extending along an outer edge of the intake opening toward the inside of the combustion chamber at an opposite side from the exhaust opening side. The mask part is configured so that a clearance from a passage surface of an edge part of the intake valve to the wall surface of the mask part is smaller at each cylinder of the first group than each cylinder of the second group.