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. 09, 2014
Filed:
Mar. 10, 2011
Hiroshi Azuma, Osaka, JP;
Kosuke Matsuura, Osaka, JP;
Hiroshi Azuma, Osaka, JP;
Kosuke Matsuura, Osaka, JP;
Yanmar Co., Ltd., Osaka-shi, JP;
Abstract
Regarding an engine exhaust gas heat exchanger that allows exhaust gas to collide with a coolant passage through apertures, a configuration that can improve efficiency of heat exchange is provided. The engine exhaust gas heat exchangeris provided with multiple stages of unit exhaust gas passagesthat are configured with a first exhaust gas passage A in which a plane facing an inlet is blocked and that has a plurality of aperturesin a circumferential direction and in a flow direction, and a second exhaust gas passage B that has a dividing wall facing the aperturesand also serving as the coolant passageand an outlet that also serves as an inlet of the first exhaust gas passage A of a next stage or an outletof the engine exhaust gas heat exchanger