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:
Feb. 02, 2016
Filed:
Mar. 22, 2012
Kazuhisa Matsuda, Susono, JP;
Kouji Morita, Mishima, JP;
Takahiko Fujiwara, Shizuoka-ken, JP;
Takahiro Tsukagoshi, Susono, JP;
Kazuhisa Matsuda, Susono, JP;
Kouji Morita, Mishima, JP;
Takahiko Fujiwara, Shizuoka-ken, JP;
Takahiro Tsukagoshi, Susono, JP;
TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota-Shi, JP;
Abstract
An engine includes variable valve mechanisms and a variable compression ratio mechanism. An ECU executes temperature balance control when a fuel-cut operation is executed. In the temperature balance control, valve opening characteristics of an exhaust valve are controlled based on a magnitude relation between an actual catalyst temperature and a target catalyst temperature and a magnitude relation between a water temperature and a required cylinder wall temperature. When executing a fuel-cut operation, it is thereby possible to control both the actual catalyst temperature and the water temperature in a well-balanced manner so that the actual catalyst temperature falls within a temperature range suitable for operation of the catalysts, and the water temperature becomes close to the required cylinder wall temperature.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile