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:
Jun. 03, 2003
Filed:
Dec. 21, 2001
Munetoyo Ikeda, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
The gearshift of an automatic transmission ( ) connected to an engine is controlled by a transmission controller ( ) in response to the vehicle speed and the accelerator pedal depression amount. The controller ( ) calculates a transmission target automatic transmission output torque so that the vehicle speed coincides with a predetermined vehicle speed ( ), and calculates the output torque of the engine based on the gear ratio and the transmission target output torque ( ). The controller ( ) determines whether or not the transmission target output torque is in a state in which a predetermined increase is not possible ( ). When the transmission target output torque is in the state in which a predetermined increase is not possible, the controller ( ) limits the transmission target automatic transmission output torque ( B) and controls the output torque of the engine based on the limited transmission target output torque ( A, ). The controller ( ) advances the timing of downshifts executed by the automatic transmission ( ) by outputting the sum of a predetermined increment and the accelerator pedal depression amount calculated from the limited transmission target output torque to the transmission controller ( ).