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:
Jun. 25, 2013
Filed:
Sep. 03, 2008
Masatoshi Katsuki, Yokohama, JP;
Masazumi Tanoura, Yokohama, JP;
Shuuji Fujii, Yokohama, JP;
Daishi Ueno, Tokyo, JP;
Yuko Ujihara, Yokohama, JM;
Masatoshi Katsuki, Yokohama, JP;
Masazumi Tanoura, Yokohama, JP;
Shuuji Fujii, Yokohama, JP;
Daishi Ueno, Tokyo, JP;
Yuko Ujihara, Yokohama, JM;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An exhaust gas purification system which, in a wider temperature range, can reduce and remove nitrogen oxides in an exhaust gas by a reduction catalyst with the use of hydrogen as a reducing agent is provided. The exhaust gas purification system has an electronic control device () which controls an EGR valve () and an EGR pipe () so that the concentration of oxygen in the exhaust gas obtained from a data map based on the state of an engine () becomes less than a predetermined value, and which controls a microreactor () so that hydrogen is added to the exhaust gas when the concentration of oxygen in the exhaust gas is less than the predetermined value.