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:
Mar. 21, 1995
Filed:
Jan. 29, 1993
Tomotaka Hirota, Hiroshima, JP;
Shinobu Miyaura, Hiroshima, JP;
Hisashi Sera, Hiroshima, JP;
Eiichiro Kawano, Hiroshima, JP;
Mazda Motor Corporation, , JP;
Abstract
A layout structure of catalytic converters, used for an engine transversely arranged in an engine room formed in a front portion of a vehicle, includes a front catalytic converter connected to an exhaust manifold arranged in a forward direction of the vehicle with respect to the engine, and a rear catalytic converter connected to an exhaust manifold arranged in a backward direction of said vehicle, wherein the rear catalytic converter is arranged to be offset from a central position of the engine arranged along a widthwise direction of the vehicle by a predetermined distance. With this structure, the rear catalytic converter can be cooled in the same manner as the front catalytic converter. In addition, the rear catalytic converter is formed into a cylindrical member having an elliptic/oval cross-sectional shape with a major axis coinciding with a longitudinal direction of the vehicle, thus increasing the area of a heat-dissipating surface of the rear catalytic converter. With this structure, heat dissipation can be promoted, and cooling air can be quickly exhausted through a tunnel portion continuous with the engine room after a cooling operation.