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. 29, 2002
Filed:
Mar. 14, 2000
Masahiko Amano, Hitachiota, JP;
Ryoso Masaki, Hitachi, JP;
Taizo Miyazaki, Hitachi, JP;
Tomoyuki Hanyu, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A hybrid vehicle is disclosed, in which the drive torque is controlled according to a target, and the engine operating point and the battery charging rate are controlled thereby as targeted to improve the fuel consumption rate of the hybrid vehicle as a whole. An engine torque estimating unit estimates the engine torque based on the motor current, and an engine output correction unit calculates a correct value of the throttle opening based on the difference between the estimated value and the target value. The battery management unit , on the other hand, calculates a target battery charge/discharge rate based on the navigation information and the battery charging rate. The engine output correction unit calculates and outputs the correction value of the target battery charge/discharge value based on the difference between the target battery charge/discharge current and the actual current. The corrected target battery charge/discharge value is input to an overall control unit and added to the target engine output value.