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. 09, 2003
Filed:
Feb. 14, 2002
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A minimum needed power is computed by adding a reserve drive power to a target drive power, a best fuel cost-performance rotation speed is computed based on the target drive power and the best fuel cost-performance power characteristics of an engine ( ), and a minimum needed rotation speed is computed based on the minimum needed power and the maximum power characteristics of the engine ( ). The best fuel cost-performance rotation speed is compared with the minimum needed rotation speed, the larger is selected as a target input rotation speed of a continuously variable transmission ( ), the speed ratio of the transmission ( ) is controlled based on the driving axle rotation speed and target input rotation speed, and the torque of the engine ( ) is controlled based on the engine rotation speed and target drive power.