Patents by Inventor Kenichiro Gunji
Kenichiro Gunji has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10093166Abstract: A hybrid vehicle has a first motor/generator mechanically coupled to a drive wheel, a second motor/generator mechanically coupled to an internal combustion engine and a high-power battery that is electrically coupled to the motor/generators. The second motor/generator has a smaller electrical power generation capability than the first motor/generator. While starting the vehicle at a time of insufficient battery capacity required for the EV start, the power generation controller disconnects the first electric motor from the drive wheel, connects the first electric motor to the internal combustion engine, and carries out MG1 idle power generation in which the first electric motor generates power by receiving torque from the internal combustion engine. When the vehicle is stopped at a time of sufficient battery capacity, the power generation controller does not carry out the MG1 idle power generation and keeps the first electric motor mechanically coupled to the drive wheel.Type: GrantFiled: June 8, 2015Date of Patent: October 9, 2018Assignee: Nissan Motor Co., Ltd.Inventors: Ryohey Toyota, Kenichiro Gunji, Tomohiro Miyagawa, Masato Koga, Hiroyuki Fukuda, Hidekazu Yagi, Shinobu Kamada
-
Publication number: 20180141428Abstract: A hybrid vehicle has a first motor/generator mechanically coupled to a drive wheel, a second motor/generator mechanically coupled to an internal combustion engine and a high-power battery that is electrically coupled to the motor/generators. The second motor/generator has a smaller electrical power generation capability than the first motor/generator. While starting the vehicle at a time of insufficient battery capacity required for the EV start, the power generation controller disconnects the first electric motor from the drive wheel, connects the first electric motor to the internal combustion engine, and carries out MG1 idle power generation in which the first electric motor generates power by receiving torque from the internal combustion engine. When the vehicle is stopped at a time of sufficient battery capacity, the power generation controller does not carry out the MG1 idle power generation and keeps the first electric motor mechanically coupled to the drive wheel.Type: ApplicationFiled: June 8, 2015Publication date: May 24, 2018Applicant: Nissan Motor Co., Ltd.Inventors: Ryohey TOYOTA, Kenichiro GUNJI, Tomohiro MIYAGAWA, Masato KOGA, Hiroyuki FUKUDA, Hidekazu YAGI, Shinobu KAMADA
-
Patent number: 9216731Abstract: Provided is a control system for a hybrid vehicle capable of achieving engine startup while minimizing shock. In the control system for a hybrid vehicle, in response to an engine startup request, upon engagement of a clutch between a motor generator and a drive wheel and startup of the engine by the motor generator, engine startup is allowed when the engine startup request is present and the absolute value of the motor/generator output torque assumes a predetermined value or less.Type: GrantFiled: June 19, 2012Date of Patent: December 22, 2015Assignee: NISSAN MOTOR CO., LTD.Inventors: Kaori Tanishima, Hiroaki Kawamura, Kenichiro Gunji
-
Publication number: 20140136039Abstract: Provided is a control system for a hybrid vehicle capable of achieving engine startup while minimizing shock. In the control system for a hybrid vehicle, in response to an engine startup request, upon engagement of a clutch between a motor generator and a drive wheel and startup of the engine by the motor generator, engine startup is allowed when the engine startup request is present and the absolute value of the motor/generator output torque assumes a predetermined value or less. The changes are shown below: Provided is a control system for a hybrid vehicle capable of achieving engine startup while minimizing shock. In the control system for a hybrid vehicle, in response to an engine startup request, upon engagement of a clutch between a motor generator and a drive wheel and startup of the engine by the motor generator, engine startup is allowed when the engine startup request is present and the absolute value of the motor/generator output torque assumes a predetermined value or less.Type: ApplicationFiled: June 19, 2012Publication date: May 15, 2014Applicant: Nissan Motor Co., Ltd.Inventors: Kaori Tanishima, Hiroaki Kawamura, Kenichiro Gunji
-
Patent number: 6930405Abstract: A vehicle control apparatus performs regenerative braking by regeneratively operating first and second motor-generators to apply first and second braking torques in response to a deceleration request. The vehicle control apparatus is improves the efficiency in regeneratively generating electric power without greatly disturbing the balance between the. The control apparatus calculates an ideal front-rear wheel distribution ratio for front wheel braking torque and the rear wheel braking torque, and also calculates a distribution allowance for the ideal front-rear wheel distribution ratio. The control apparatus then corrects the ideal front-rear wheel distribution ratio within the distribution allowance such that the electric power generation efficiencies of the first motor-generator connected to the rear wheels and the second motor-generator connected to the front wheels are increased.Type: GrantFiled: September 30, 2003Date of Patent: August 16, 2005Assignee: Nissan Motor Co., Ltd.Inventor: Kenichiro Gunji
-
Publication number: 20040070270Abstract: A vehicle control apparatus performs regenerative braking by regeneratively operating first and second motor-generators to apply first and second braking torques in response to a deceleration request. The vehicle control apparatus is improves the efficiency in regeneratively generating electric power without greatly disturbing the balance between the. The control apparatus calculates an ideal front-rear wheel distribution ratio for front wheel braking torque and the rear wheel braking torque, and also calculates a distribution allowance for the ideal front-rear wheel distribution ratio. The control apparatus then corrects the ideal front-rear wheel distribution ratio within the distribution allowance such that the electric power generation efficiencies of the first motor-generator connected to the rear wheels and the second motor-generator connected to the front wheels are increased.Type: ApplicationFiled: September 30, 2003Publication date: April 15, 2004Applicant: Nissan Motor Co., Ltd.Inventor: Kenichiro Gunji