Patents by Inventor Azusa Kobayashi
Azusa Kobayashi 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).
-
Publication number: 20230347866Abstract: A control method for a hybrid vehicle is provided. The hybrid vehicle includes: a power generator that charges a battery using power of an engine; an electric motor that drives a driving wheel by electric power of the battery; a particulate filter that collects particulate matters contained in exhaust gas from the engine. In the control method, electric power is supplied from the battery to the power generator to perform a motoring operation of rotating the engine by the power generator to supply air to the particulate filter when particulate matters of a first predetermined amount or more are accumulated in the particulate filter. And motoring operation is prohibited even if the particulate filter is accumulated with particulate matters of the first predetermined amount or more when a predetermined first condition that a driver does not intend a motoring operation is satisfied.Type: ApplicationFiled: July 26, 2019Publication date: November 2, 2023Applicant: NISSAN MOTOR CO., LTD.Inventors: Kiyoshi HOSHI, Kenichi GOTOU, Azusa KOBAYASHI
-
Publication number: 20230339452Abstract: In a control method of a vehicle, an electric power consumption, which is an electric power consumed by the motoring, includes a friction electric power consumption, which is an electric power consumption of the motoring determined according to friction of the internal combustion engine, and an inertia electric power, which is an electric power consumed for an inertia torque for changing a rotation speed of the internal combustion engine.Type: ApplicationFiled: August 7, 2020Publication date: October 26, 2023Inventors: Kiyoshi Hoshi, Hiroko Katayama, Azusa Kobayashi, Hiroyasu Fujita, Hiromu Morishita
-
Publication number: 20230303059Abstract: A series hybrid vehicle control method for controlling a vehicle that has a battery, an electric power generating motor, a drive motor and an internal combustion engine. The battery charged with the electric power from the electric power generating motor that generates electric power by being driven by the internal combustion engine, and charged with the electric power regenerated by regenerative braking of the drive motor. The drive motor drives a drive wheel. The electric power consumption for motoring is greater in a B range than in a D range. The control method sets deceleration caused by regenerative braking of the drive motor to be greater in the B range than in the D range, and starts motoring of the internal combustion engine in the B range at a lower SOC of the battery than the SOC of the battery in the D range.Type: ApplicationFiled: August 5, 2020Publication date: September 28, 2023Inventors: Kiyoshi HOSHI, Hiroko KATAYAMA, Azusa KOBAYASHI, Hiroyasu FUJITA, Hiromu MORISHITA
-
Publication number: 20230271598Abstract: A vehicle control system increases the travel distance of a vehicle by inhibiting reduction in the SOC of a battery even when the output of an engine is limited. The control system is characterized by comprising: an electric motor that drives a vehicle: an engine that drives a power generator that generates electric power to be supplied to the electric motor; a battery that is configured to be chargeable by the power generator and that is electrically connected to the electric motor; and a controller that controls the electric motor.Type: ApplicationFiled: July 28, 2020Publication date: August 31, 2023Inventors: Ryo Onogawa, Azusa Kobayashi, Yoshihiro Terai
-
Patent number: 11577713Abstract: A method for controlling a hybrid vehicle including a battery charged with electric power generated by an engine, including a motor as a drive source, and having multiple running modes that can be selected through a mode operation, the running modes including a normal mode configured to perform charging of the battery according to a running state, and a charge mode configured to perform electric power generation by the engine according to a mode operation, the method comprising: setting a range of charge amount that allows for charging of the battery based on the electric power generated; and setting an upper limit of the range of charge amount in the charge mode to be lower than an upper limit of the range of charge amount in the normal mode.Type: GrantFiled: December 15, 2017Date of Patent: February 14, 2023Assignee: Nissan Motor Co., Ltd.Inventors: Shinsuke Higuchi, Hidekatsu Akiyama, Azusa Kobayashi, Keisuke Kawai
-
Patent number: 11529944Abstract: A control method for a hybrid vehicle including a generator and an electric motor, the generator being configured to charge a battery by use of power of an engine, the electric motor being configured to drive driving wheels by electric power of the battery, is provided, is provided. The control method having controlling the generator and the electric motor and accepting mode setting to set any of a normal mode, a regeneration driving mode, and a silent mode, the regeneration driving mode being a mode in which a regenerative braking force caused by the electric motor is larger than that in the normal mode, the silent mode being a mode in which charging by the engine is inhibited, wherein: when the normal mode is set, setting of the silent mode is not accepted; and when the regeneration driving mode is set, setting of the silent mode is accepted.Type: GrantFiled: December 15, 2017Date of Patent: December 20, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Shinsuke Higuchi, Hidekatsu Akiyama, Azusa Kobayashi, Keisuke Kawai
-
Patent number: 11518363Abstract: A method for controlling a hybrid vehicle includes an engine, a battery charged with electric power generated by the engine, and a motor as a drive source and having multiple running modes that can be selected through a mode operation. As the running mode, the method for controlling a hybrid vehicle includes a normal mode configured to perform charging of the battery according to a running state; and a charge mode configured to electric power generation by the engine according to a mode operation, the method comprising setting an upper limit of charging electric power based on the generated electric power in the charge mode to be lower than an upper limit of charging electric power based on the generated electric power in the normal mode.Type: GrantFiled: December 15, 2017Date of Patent: December 6, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Shinsuke Higuchi, Hidekatsu Akiyama, Azusa Kobayashi, Keisuke Kawai
-
Publication number: 20220363239Abstract: A control method controls a series hybrid vehicle in which a drive motor and an internal combustion engine are supported in a vehicle body via a plurality of mount members in an integrated state. The control method using a controller generates electric power using an electric power generation motor, and drives the electric power generation motor using motive power of the internal combustion engine. The control method drives a drive wheel with the drive motor using the generated electric power, and causes the drive motor to generate regenerative torque during deceleration. In the control method, the regenerative torque is generated by the drive motor such that an upper limit of the regenerative torque is restricted to a magnitude at which an engine rotational speed where resonance occurs on the vehicle body floor.Type: ApplicationFiled: July 29, 2020Publication date: November 17, 2022Inventors: Kiyoshi HOSHI, Yohei NAKAMURA, Azusa KOBAYASHI
-
Publication number: 20220355786Abstract: A series hybrid vehicle control method charges a battery with electric power generated by an electric power generation motor driven by an internal combustion engine, and electric power regenerated by a drive motor. The control method starts generating the electric power by the engine if a requested output exceeds a power generation start threshold value, and stops generating electric power by the engine if the requested output falls below a power generation stop threshold value. A deceleration rate by regeneration of the drive motor is greater in a second advancement shift position than in a first advancement shift position. The power generation start threshold value and/or the power generation stop threshold value where the second advancement shift position has been selected is greater than the power generation start threshold value or the power generation stop threshold value where the first advancement shift position has been selected.Type: ApplicationFiled: July 31, 2020Publication date: November 10, 2022Inventors: Kiyoshi HOSHI, Hiroko KATAYAMA, Azusa KOBAYASHI, Hiroyasu FUJITA, Hiromu MORISHITA
-
Publication number: 20220289170Abstract: A control method for a hybrid vehicle is provided. The hybrid vehicle includes: a generator configured to charge a battery by using power of an engine; an electric motor configured to drive a driving wheel by electric power of the battery; and a particulate filter configured to collect particulate matter contained in exhaust gas from the engine. In the control method, the engine is driven to raise a temperature of the particulate filter when a first temperature rise condition is satisfied in which a first predetermined amount or more of the particulate matter is accumulated in the particulate filter and the temperature of the particulate filter is equal to or lower than a predetermined temperature. Drive of the engine is prohibited, when a predetermined first condition that a driver does not intend to drive the engine is satisfied.Type: ApplicationFiled: July 26, 2019Publication date: September 15, 2022Applicant: NISSAN MOTOR CO., LTD.Inventors: Kiyoshi HOSHI, Kenichi GOTOU, Azusa KOBAYASHI
-
Patent number: 11434798Abstract: A catalyst warm-up control method for a hybrid vehicle includes a battery supplying electric power to an electric motor, the battery is charged by an engine for electric power generation, and exhaust gas discharged from the engine 1 is treated by a catalyst. By the catalyst warm-up control method, when temperature of the catalyst is lower than required warm-up temperature for activating the catalyst, target revolution speed and target torque of the engine are controlled based on a state of charge of the battery, and, when target revolution speed is lower than lower-limit revolution speed at which the catalyst can be heated to the required warm-up temperature, the target revolution speed is controlled so as to be required warm-up revolution speed that is equal to or higher than the lower-limit revolution speed.Type: GrantFiled: December 15, 2017Date of Patent: September 6, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Azusa Kobayashi, Tsuyoshi Ishikawa, Hidekatsu Akiyama, Shinsuke Higuchi
-
Publication number: 20220258720Abstract: A hybrid control method controls a hybrid vehicle. A control unit sets a rotational speed threshold value at which a continuous gear tooth striking sound occurring in a gear mechanism connecting an electric power generation motor to the internal combustion engine is not a problem in terms of vehicle quality. The control unit generates negative pressure while maintaining the engine rotational speed in the firing state where the engine rotational speed is equal to or greater than the rotational speed threshold value. Also, the control unit generates negative pressure after switching from the firing state to a motoring state where the internal combustion engine is rotated by the electric power generation motor and where the engine rotational speed is less than the rotational speed threshold value.Type: ApplicationFiled: December 6, 2019Publication date: August 18, 2022Inventors: Tsukasa ICHIBA, Makoto KOZUKA, Tomohiro ITO, Azusa KOBAYASHI, Kenichi GOTO
-
Patent number: 11312362Abstract: In an electric device control method and an electric device of the present invention, during a period in which a rotational speed of an internal combustion engine shifting from a non-combustion mode to a combustion mode is decreased to a rotational speed within a predetermined rotational-speed range by a first electric motor connected to the internal combustion engine, a torque generated by the internal combustion engine is set lower than a required torque within the predetermined rotational-speed range for the internal combustion engine in the combustion mode.Type: GrantFiled: December 15, 2017Date of Patent: April 26, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Azusa Kobayashi, Kenichi Gotou, Kiyoshi Hoshi
-
Patent number: 11285937Abstract: A catalyst warm-up control method for a hybrid vehicle supplies electric power to an electric motor by a battery, to charge the battery by a power generation engine, and to treat exhaust gas from the engine with a catalyst, the hybrid vehicle selecting a manner mode in which power generation using the engine is stopped. The catalyst warm-up control method performs catalyst warm-up control such that when the temperature of the catalyst becomes lower than a normal threshold temperature for activating the catalyst, the target rotation speed of the engine is controlled to a first warm-up required rotation speed at which the catalyst can be heated to a temperature that is higher than the normal threshold temperature. When the manner mode is selected, control is performed when temperature of the catalyst becomes lower than a manner mode threshold temperature that is equal to or less than the normal threshold temperature.Type: GrantFiled: December 15, 2017Date of Patent: March 29, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Shinsuke Higuchi, Hidekatsu Akiyama, Azusa Kobayashi, Keisuke Kawai, Takashi Kamijo, Tsuyoshi Ishikawa
-
Patent number: 11280250Abstract: Method of controlling cooling water temperature of an engine in which the lower limit value of engine rotation speed is set according to outside air temperature and vehicle speed. When the vehicle starts traveling, a temperature raising-state lower limit rotation speed is set to raise the cooling water temperature to a third threshold value. After the cooling water temperature is raised to the third threshold value, the lower limit value is not set. If the cooling water temperature drops to a second threshold value, a maintaining-state lower limit rotation speed lower than the temperature raising-state lower limit rotation speed is set to raise the cooling water temperature. If the cooling water temperature does not rise but drops to a first threshold value, a temperature re-raising-state lower limit rotation speed lower than the temperature raising-state lower limit rotation speed and higher than the maintaining-state lower limit rotation speed is set.Type: GrantFiled: December 15, 2017Date of Patent: March 22, 2022Assignee: Nissan Motor Co., Ltd.Inventors: Azusa Kobayashi, Hiroki Eguchi
-
Publication number: 20210213934Abstract: A method for controlling a hybrid vehicle includes an engine, a battery charged with electric power generated by the engine, and a motor as a drive source and having multiple running modes that can be selected through a mode operation. As the running mode, the method for controlling a hybrid vehicle includes a normal mode configured to perform charging of the battery according to a running state; and a charge mode configured to electric power generation by the engine according to a mode operation, the method comprising setting an upper limit of charging electric power based on the generated electric power in the charge mode to be lower than an upper limit of charging electric power based on the generated electric power in the normal mode.Type: ApplicationFiled: December 15, 2017Publication date: July 15, 2021Inventors: Shinsuke Higuchi, Hidekatsu Akiyama, Azusa Kobayashi, Keisuke Kawai
-
Publication number: 20210162981Abstract: In an electric device control method and an electric device of the present invention, during a period in which a rotational speed of an internal combustion engine shifting from a non-combustion mode to a combustion mode is decreased to a rotational speed within a predetermined rotational-speed range by a first electric motor connected to the internal combustion engine, a torque generated by the internal combustion engine is set lower than a required torque within the predetermined rotational-speed range for the internal combustion engine in the combustion mode.Type: ApplicationFiled: December 15, 2017Publication date: June 3, 2021Inventors: Azusa Kobayashi, Kenichi Gotou, Kiyoshi Hoshi
-
Publication number: 20210155218Abstract: A method for controlling a hybrid vehicle including a battery charged with electric power generated by an engine, including a motor as a drive source, and having multiple running modes that can be selected through a mode operation, the running modes including a normal mode configured to perform charging of the battery according to a running state, and a charge mode configured to perform electric power generation by the engine according to a mode operation, the method comprising: setting a range of charge amount that allows for charging of the battery based on the electric power generated; and setting an upper limit of the range of charge amount in the charge mode to be lower than an upper limit of the range of charge amount in the normal mode.Type: ApplicationFiled: December 15, 2017Publication date: May 27, 2021Applicant: Nissan Motor Co., Ltd.Inventors: Shinsuke HIGUCHI, Hidekatsu AKIYAMA, Azusa KOBAYASHI, Keisuke KAWAI
-
Publication number: 20200398819Abstract: A catalyst warm-up control method for a hybrid vehicle supplies electric power to an electric motor by a battery, to charge the battery by a power generation engine, and to treat exhaust gas from the engine with a catalyst, the hybrid vehicle selecting a manner mode in which power generation using the engine is stopped. The catalyst warm-up control method performs catalyst warm-up control such that when the temperature of the catalyst becomes lower than a normal threshold temperature for activating the catalyst, the target rotation speed of the engine is controlled to a first warm-up required rotation speed at which the catalyst can be heated to a temperature that is higher than the normal threshold temperature. When the manner mode is selected, control is performed when temperature of the catalyst becomes lower than a manner mode threshold temperature that is equal to or less than the normal threshold temperature.Type: ApplicationFiled: December 15, 2017Publication date: December 24, 2020Inventors: Shinsuke Higuchi, Hidekatsu Akiyama, Azusa Kobayashi, Keisuke Kawai, Takashi Kamijo, Tsuyoshi Ishikawa
-
Publication number: 20200386135Abstract: A catalyst warm-up control method for a hybrid vehicle includes a battery supplying electric power to an electric motor, the battery is charged by an engine for electric power generation, and exhaust gas discharged from the engine 1 is treated by a catalyst. By the catalyst warm-up control method, when temperature of the catalyst is lower than required warm-up temperature for activating the catalyst, target revolution speed and target torque of the engine are controlled based on a state of charge of the battery, and, when target revolution speed is lower than lower-limit revolution speed at which the catalyst can be heated to the required warm-up temperature, the target revolution speed is controlled so as to be required warm-up revolution speed that is equal to or higher than the lower-limit revolution speed.Type: ApplicationFiled: December 15, 2017Publication date: December 10, 2020Inventors: Azusa Kobayashi, Tsuyoshi Ishikawa, Hidekatsu Akiyama, Shinsuke Higuchi