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:
Sep. 13, 2005
Filed:
Jan. 14, 2004
Satoshi Segawa, Atsugi, JP;
Kazutaka Adachi, Yokohama, JP;
Satoshi Segawa, Atsugi, JP;
Kazutaka Adachi, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An engaging force of a pump impeller () connected to an engine () and a turbine runner () connected to an automatic transmission () is controlled by a controller (). The controller () determines a target relative rotation speed of the pump impeller () and the turbine runner (), and performs feedback control of the engaging force such that the difference between the target relative rotation speed and the real relative rotation speed is decreased. The controller () also performs feedforward control of the engaging force in a increasing direction. When the engine () is in a predetermined engine-stall prevention condition, the controller () prohibits the feedforward control so as to prevent an interference between feedback control and feedforward control.