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. 15, 2014
Filed:
Jun. 22, 2011
Kazuhiro Kosugi, Hiroshima, JP;
Yasushi Nakahara, Hiroshima, JP;
Daijirou Ishimoto, Hiroshima, JP;
Minori Fujino, Hiroshima, JP;
Kazuhiro Okino, Hiroshima, JP;
Kazuhiro Kosugi, Hiroshima, JP;
Yasushi Nakahara, Hiroshima, JP;
Daijirou Ishimoto, Hiroshima, JP;
Minori Fujino, Hiroshima, JP;
Kazuhiro Okino, Hiroshima, JP;
Mazda Corporation, Hiroshima, JP;
Abstract
An intake-side space around intake ports and an exhaust-side lower space around exhaust ports are provided in a main cooling jacket portion. These spaces are connected to each other. In a sub cooling jacket portion, an exhaust-side upper space is provided at a level above the exhaust-side lower space. The main cooling jacket portion and the sub cooling jacket portion are connected to each other via a cylindrical-hole connecting passage extending vertically and separate from each other vertically via a wall portion in another area than the connecting passage. Accordingly, a cooling device of an engine which can restrain the exhaust gas from being cooled too much improperly is provided.