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:
Aug. 21, 2001
Filed:
Feb. 09, 2000
Yoshitaka Deguchi, Yokohama, JP;
Taketoshi Kawabe, Yokohama, JP;
Itsuro Muramoto, Yokohama, JP;
Kouichi Kuroda, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A driving force control system for an automotive vehicle using driving torque produced by at least one of an internal combustion engine and an electric motor for propulsion, and including a battery and a power-transmission mechanism having a continuously variable transmission, comprises sensors detecting vehicle speed, engine speed, an accelerator operating amount, a state of charge of the battery. An electronic control unit calculates a target engine speed needed to realize the vehicle speed, the target driving torque and the target generated electric energy at the lowest fuel consumption, considering an efficiency of each of the engine, the electric motor, and the power-transmission mechanism, so as to operate the engine, the electric motor, and/or the power-transmission mechanism always at their optimum operating points depending on the ratio of a first time rate of doing work for the driver's required driving torque to a second time rate of doing work for the required generated electric energy, as well as the sum of the first and second time rates.