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. 25, 1995
Filed:
Apr. 27, 1993
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
In an internal combustion engine equipped with an intake pipe and an exhaust gas purification/discharge system including an exhaust pipe and a catalytic converter installed in the pipe for purification of engine exhaust gas, an apparatus for controlling introduction of air to the exhaust gas purification/discharge system comprises an air feed pipe having one inlet port and an outlet port connected to the exhaust pipe at a position upstream of the catalytic converter, a valve installed in the air feed pipe at a position downstream of the inlet port, and a computerized controller operatively connected to the valve for controlling the valve such that the air introduction to the exhaust gas purification/discharge system is optimized for exhaust gas purification effected by the catalytic converter.