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:
May. 02, 1978
Filed:
Feb. 14, 1977
Yoshitoshi Sakurai, Niiza, JA;
Ikuo Kajitani, Niiza, JA;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JA;
Abstract
Separate exhaust pipes each receive exhaust gases from a plurality of cylinders of an internal combustion engine. The exhaust pipes merge into a common outlet delivering exhaust gases into a first reaction chamber and then into a second reaction chamber enclosing the first reaction chamber. The second reaction chamber also encloses the exhaust pipes and outlet. The cross section areas of the exhaust pipes, outlet and continuing passageway through the first reaction chamber are substantially the same in effective cross section area to avoid temperature drop in the exhaust gases due to expansion. Oxygen-rich exhaust gases from the engine are held at a high temperature for long residence time to oxidize HC and CO and thereby minimize the quantity of these pollutants discharged into the atmosphere.