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:
Feb. 16, 1993
Filed:
Mar. 29, 1991
Kenji Tarekado, Hiroshima, JP;
Masanori Nakamura, Hiroshima, JP;
Kazuaki Hokazono, Hiroshima, JP;
Hirotaka Fukada, Hiroshima, JP;
Takashige Ishikawa, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
An intake system distributes air into cylinders of an internal combustion engine, which are divided into two groups. The cylinders in each group are arranged in the same row so that adjoining cylinders in each row do not fire one after another. An intake passage is formed with an upstream passage and two separate downstream passages, extending from the upstream passage, which are connected to the two groups of cylinders. The upstream passage is divided by a partition wall into two separate upstream passages in communication with the two separate downstream passages, respectively. A throttle valve is disposed adjacent to the intake passage so as to extend a path of each separate upstream passage when the throttle valve is in its full throttle position.