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:
Nov. 17, 2009
Filed:
Oct. 07, 2005
Tetsuya Shimada, Kitakatsushika-gun, JP;
Masahiro Iriyama, Yokohama, JP;
Tetsuya Shimada, Kitakatsushika-gun, JP;
Masahiro Iriyama, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
An engine torque control device is configured to reduce shift shock while shortening shift time and improving shift response in an engine equipped with a shifting unit. In the engine torque control device engine output torque is subjected to feedback control so that the engine speed will be the target speed (synchronizing speed) after a downshift. The feedback control includes at least a proportional control and a differential control. The differential control is halted until the difference between the synchronizing speed and the actual engine speed is equal to or less than a specified value. Differential control is only performed at or below this specified value.