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:
Apr. 14, 2020
Filed:
Sep. 21, 2017
Honda Motor Co., Ltd., Tokyo, JP;
Masaki Cho, Wako, JP;
Hiroyuki Natsui, Wako, JP;
Kenji Nishida, Wako, JP;
Hirotaka Kawatsu, Wako, JP;
Tomiyuki Sasaki, Wako, JP;
Ryota Takahashi, Wako, JP;
HONDA MOTOR CO., LTD., Tokyo, JP;
Abstract
An internal combustion engine is configured to satisfy the relation expressed by 0<Rv<0.000438×θ−0.0407×θ+1.55 in a range of an intake valve overlap amount θ(°) from 20° to 45°, where Rv denotes an intake port volume ratio obtained by dividing an intake port internal volume Vp by a cylinder stroke volume Vc, and the intake valve overlap amount θ(°) is a crank angle from an intake valve opening timing when the intake valve starts opening to an intake top dead center of the piston. The engine improves output performance as well as both combustion performance and emission performance by suppressing reverse flow of the combustion gas into the intake system.