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:
Oct. 16, 2012
Filed:
Jul. 24, 2009
Shiro Yamaoka, Hitachi, JP;
Yoshihiro Sukegawa, Hitachi, JP;
Noboru Tokuyasu, Hitachinaka, JP;
Hiroaki Hoshika, Hitachiomiya, JP;
Daisuke Terada, Hitachinaka, JP;
Shiro Yamaoka, Hitachi, JP;
Yoshihiro Sukegawa, Hitachi, JP;
Noboru Tokuyasu, Hitachinaka, JP;
Hiroaki Hoshika, Hitachiomiya, JP;
Daisuke Terada, Hitachinaka, JP;
Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;
Abstract
A control device for an engine, capable of accurately estimating the quantity of exhaust heat from the engine and performing engine control which improves the exhaust quality and fuel consumption of the engine in various operating conditions thereof, by using the accurate estimated value of the quantity of exhaust heat. A control device for an engine is provided with an exhaust flow rate sensor for directly sensing the flow rate of exhaust gas discharged from the engine, an exhaust temperature estimating device for sensing or estimating the temperature of the exhaust gas discharged from the engine, and an exhaust heat quantity estimating device for estimating, based on an output of the exhaust flow rate sensor and an output of the exhaust temperature estimating device, the quantity of heat of the exhaust gas discharged from the engine.