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. 15, 2011
Filed:
Oct. 10, 2007
Akihiro Kimura, Toyota, JP;
Kentaro Haruno, Toyota, JP;
Takeshi Aoki, Nishio, JP;
Atsushi Kayukawa, Anjo, JP;
Shoji Nagata, Anjo, JP;
Akihiro Kimura, Toyota, JP;
Kentaro Haruno, Toyota, JP;
Takeshi Aoki, Nishio, JP;
Atsushi Kayukawa, Anjo, JP;
Shoji Nagata, Anjo, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota-shi, JP;
Aisin AW Co., Ltd., Anjo-shi, JP;
Abstract
An object oil temperature is determined by adopting a gradual change process for an oil temperature of a cooling lubricant oil, which is used to lubricate and cool down a motor and a transmission constructed to cause an output power of the motor to be subjected to speed change and to be transmitted to a driveshaft. A load factor of the motor is subsequently set based on the set object oil temperature and a motor coil temperature. A motor torque command is set with the load factor, and the motor is then driven and controlled to ensure output of a torque equivalent to the set motor torque command. This arrangement drives and controls the motor with consideration of the oil temperature of the cooling lubricant oil and thus ensures more adequate actuation of the motor, compared with a conventional drive control without consideration of the oil temperature of the cooling lubricant oil.