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:
Dec. 17, 2013
Filed:
Jun. 14, 2010
Takashi Senda, Aichi-ken, JP;
Mitsuo Hara, Ichinomiya, JP;
Hiroaki Takeishi, Oobu, JP;
Daisuke Nakanishi, Aichi-ken, JP;
Hisashi Iida, Kariya, JP;
Takashi Senda, Aichi-ken, JP;
Mitsuo Hara, Ichinomiya, JP;
Hiroaki Takeishi, Oobu, JP;
Daisuke Nakanishi, Aichi-ken, JP;
Hisashi Iida, Kariya, JP;
Denso Corporation, Kariya, JP;
Abstract
An apparatus is provided for application to a waste heat reuse system that recovers and reuses engine waste heat, and for controlling the amount of waste heat based on a requested heat amount of a heat utilization request. In the apparatus, an overlap angle between a valve-opening period of an intake valve and that of an exhaust valve of the engine is controlled based on an engine driving condition. Ignition timing of the engine is controlled to fall on maximum-efficient timing that minimizes fuel consumption in a current engine driving condition. When a requested heat amount cannot be satisfied, overlap-increase control is performed to increase an overlap angle, and ignition advance control is performed to advance ignition timing with reference to a maximum-efficient timing that corresponds to the increased overlap angle. Waste heat amount of the engine is controlled with the overlap-increase control and the ignition advance control.