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:
Jul. 12, 1988
Filed:
Mar. 19, 1986
Motohiro Shinzawa, Yokosuka, JP;
Nissan Motor Company, Ltd., Kanagawa, JP;
Abstract
A filter traps particles in exhaust from an engine. When the degree of clogging of the filter is unacceptable, the flow of intake air into the engine is throttled to increase the temperature of exhaust from the engine and thereby to burn off the particles trapped by the filter. During throttling of the intake air flow, the pressure of the intake air may be adjusted in accordance with an engine operating condition. An arrangement for finely adjusting the degree of throttling of the intake air may be added. In cases where the exhaust is recirculated through the engine, the rate of the exhaust recirculation is reduced when the intake air flow is throttled to burn off the trapped particles.