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. 16, 1993
Filed:
Apr. 25, 1991
Tetsuya Kamihara, Yokosuka, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An exhaust gas purifying system including a trap filter for trapping particulates and the like which are discharged from a diesel engine. The trap filter in disposed in an exhaust passageway and carries an oxidation catalyst. A fuel injector valve is provided to inject fuel into the exhaust passageway upstream of the trap filter, so that the trap filter is supplied with fuel. The fuel is burned in the trap filter under the action of the oxidation catalyst thereby burning the particulates and the like so as to achieve a regeneration operation for the trap filter. The amount of fuel from the fuel injector valve is controlled to increase as an intake air amount increases and to decrease as an exhaust gas temperature increases.