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:
Apr. 28, 2009
Filed:
Apr. 28, 2004
Akihiro Kimura, Toyota, JP;
Natsuki Nozawa, Toyota, JP;
Akihiro Kimura, Toyota, JP;
Natsuki Nozawa, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Abstract
The procedure of the invention sets a revolution speed at an efficient drive point, which is selected among drive points of an engine fulfilling a target power Pe* to be output from the engine, to a tentative revolution speed Netmpof the engine. The procedure also calculates a revolution speed that satisfies both a torque demand Tr* to be output to a drive shaft and a charge limit Win of a battery or an electric accumulator and sets the calculated revolution speed to a tentative revolution speed Netmpof the engine. The procedure sets the grater between the tentative revolution speed Netmpand the tentative revolution speed Netmpto a target revolution speed Ne* of the engine and controls the engine and two motors. This arrangement ensures output of a required braking force in response to a driver's accelerator-off action, while taking into account the charge limit of the electric accumulator.