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:
Jan. 31, 1995
Filed:
Oct. 08, 1993
Kenichi Harada, Susono, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A catalyst heating control apparatus includes a catalytic converter arranged in an exhaust passage of an internal combustion engine, a heating part for heating a catalyst of the catalytic converter after the engine has started operating so as to promote a catalytic conversion of exhaust gas from the engine, a detecting part for sensing a temperature of engine coolant of the engine and a calculating part for determining a releasing condition based on an engine temperature sensed by the detecting part at the start of the engine operation. The heating of the catalyst of the catalytic converter is stopped when the releasing condition is satisfied. A stopping part stops the heating part from heating the catalyst of the catalytic converter when an operating condition of the engine satisfies the releasing condition.