Patents by Inventor Tadayoshi Hirao
Tadayoshi Hirao 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: 10661782Abstract: An operation control system for a hybrid vehicle capable of causing the vehicle to travel in parallel mode in which front wheels of the vehicle are driven by an engine and a front motor, capable of fuel cut control to stop fuel supply to the engine during deceleration of the vehicle, and capable of regenerative braking using the front motor, wherein when the vehicle traveling in parallel mode is to be decelerated and SOC of a traction battery is lower than or equal to an electricity-generation determination lower limit value Sbu, Sbd, a hybrid control unit performs first charging promotion control to brake the vehicle by regenerative braking while causing the engine to continue operating by continuing fuel supply.Type: GrantFiled: August 2, 2017Date of Patent: May 26, 2020Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Takahiro Oguma, Shigetoshi Hirano, Tadayoshi Hirao
-
Patent number: 10086826Abstract: A control device for a hybrid vehicle including an internal combustion engine includes: a limiting unit configured to limit an output of the internal combustion engine when temperature of cooling water for cooling the internal combustion engine is equal to or higher than a predetermined temperature; a discharging unit configured to discharge, when internal pressure of a fuel tank is equal to or higher than predetermined pressure, fuel evaporative gas in the fuel tank into an intake passage of the internal combustion engine while the internal combustion engine is being driven; and a prioritizing unit configured to prioritize the limiting of the output of the internal combustion engine by the limiting unit over the discharging of the fuel evaporative gas by the discharging unit, when the discharging unit is to discharge the fuel evaporative gas and the limiting unit is to limit the output of the internal combustion engine.Type: GrantFiled: August 2, 2016Date of Patent: October 2, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Takuya Sato, Shigetoshi Hirano, Tadayoshi Hirao, Takahiro Oguma
-
Publication number: 20180072307Abstract: An operation control system for a hybrid vehicle capable of causing the vehicle to travel in parallel mode in which front wheels of the vehicle are driven by an engine and a front motor, capable of fuel cut control to stop fuel supply to the engine during deceleration of the vehicle, and capable of regenerative braking using the front motor, wherein when the vehicle traveling in parallel mode is to be decelerated and SOC of a traction battery is lower than or equal to an electricity-generation determination lower limit value Sbu, Sbd, a hybrid control unit performs first charging promotion control to brake the vehicle by regenerative braking while causing the engine to continue operating by continuing fuel supply.Type: ApplicationFiled: August 2, 2017Publication date: March 15, 2018Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Takahiro OGUMA, Shigetoshi HIRANO, Tadayoshi HIRAO
-
Patent number: 9908522Abstract: A control device of a vehicle enables an engine to be operated at an operating point with a good fuel consumption efficiency, to perform power generation, without causing a sense of incongruity about noise or vibrations to a driver. With the control device, the engine is operated so that generated power of a generator increases in response to electric power required of the vehicle. Thus, the engine can be operated at an operating point with a satisfactory fuel consumption efficiency. When in an acceleration state, the engine is operated so that the increase amount of generated power is set to be larger than when in a deceleration state. When in the deceleration state, the engine is operated so that an increase in generated power is suppressed and an increase in noise is curbed.Type: GrantFiled: March 3, 2016Date of Patent: March 6, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu Ikedaya, Tadayoshi Hirao, Shigetoshi Hirano
-
Patent number: 9688265Abstract: A regenerative control device for a hybrid vehicle includes a regenerative braking power control unit prohibiting or limiting execution of first regenerative braking to charge the battery with power generated by the regenerative power generation of the traveling motor generator during deceleration when it is determined that it is necessary to restrict charging of the battery. The regenerative braking power control unit causes both second regenerative braking to transmit rotary driving power to the engine by rotating the power generation motor generator by the power generated by the regenerative power generation, and combustion operation in which fuel is supplied to the engine and the fuel is burned to generate the rotary driving power at the engine, to be executed, under condition where the execution of the first regenerative braking is prohibited or limited.Type: GrantFiled: August 26, 2015Date of Patent: June 27, 2017Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu Ikedaya, Shigetoshi Hirano, Tadayoshi Hirao, Takahiro Oguma, Takuya Sato, Katsunori Ueda, Kentaro Honda
-
Patent number: 9669834Abstract: A regenerative control device for a hybrid vehicle includes a regenerative braking power control unit prohibiting or limiting execution of first regenerative braking to charge the battery with power generated by the regenerative power generation of the traveling motor generator during deceleration when it is determined that it is necessary to restrict charging of the battery. Under condition where the execution of the first regenerative braking is prohibited or limited, the regenerative braking power control unit causes second regenerative braking to transmit rotary driving power to the engine by rotating the power generation motor generator by the power generated by the regenerative power generation, to be executed when the operation unit is set to a regeneration level in an increasing direction, and causes the second regenerative braking to be stopped when the operation unit is set to a regeneration level in a decreasing direction.Type: GrantFiled: August 26, 2015Date of Patent: June 6, 2017Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu Ikedaya, Katsunori Ueda, Kentaro Honda, Shigetoshi Hirano, Tadayoshi Hirao, Takahiro Oguma, Takuya Sato
-
Publication number: 20170050633Abstract: A control device for a hybrid vehicle including an internal combustion engine includes: a limiting unit configured to limit an output of the internal combustion engine when temperature of cooling water for cooling the internal combustion engine is equal to or higher than a predetermined temperature; a discharging unit configured to discharge, when internal pressure of a fuel tank is equal to or higher than predetermined pressure, fuel evaporative gas in the fuel tank into an intake passage of the internal combustion engine while the internal combustion engine is being driven; and a prioritizing unit configured to prioritize the limiting of the output of the internal combustion engine by the limiting unit over the discharging of the fuel evaporative gas by the discharging unit, when the discharging unit is to discharge the fuel evaporative gas and the limiting unit is to limit the output of the internal combustion engine.Type: ApplicationFiled: August 2, 2016Publication date: February 23, 2017Applicant: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Takuya SATO, Shigetoshi HIRANO, Tadayoshi HIRAO, Takahiro OGUMA
-
Publication number: 20160257299Abstract: A control device of a vehicle enables an engine to be operated at an operating point with a good fuel consumption efficiency, to perform power generation, without causing a sense of incongruity about noise or vibrations to a driver. With the control device, the engine is operated so that generated power of a generator increases in response to electric power required of the vehicle. Thus, the engine can be operated at an operating point with a satisfactory fuel consumption efficiency. When in an acceleration state, the engine is operated so that the increase amount of generated power is set to be larger than when in a deceleration state. When in the deceleration state, the engine is operated so that an increase in generated power, is suppressed and an increase in noise is curbed.Type: ApplicationFiled: March 3, 2016Publication date: September 8, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu IKEDAYA, Tadayoshi HIRAO, Shigetoshi HIRANO
-
Patent number: 9415766Abstract: A regenerative control device of a vehicle an engine; a first motor; a second motor performing regenerative power generation; a battery connected to the first and second motors; and a heating device heating using heat, includes: a determiner determining whether the heating device is in operation or not, and determining whether charging the battery is regulated or not; and a controller performing parallel firing control in which a driving force is given to the engine by the first motor while burning fuel in the engine, during the regenerative power generation when the heating device is in operation and charging the battery is regulated, and setting a target torque of the engine in the parallel firing control to be equal to or lower than a burning limit torque of the engine.Type: GrantFiled: June 22, 2015Date of Patent: August 16, 2016Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu Ikedaya, Shigetoshi Hirano, Katsunori Ueda, Kentaro Honda, Tadayoshi Hirao, Takahiro Oguma, Takuya Sato
-
Publication number: 20160059844Abstract: A regenerative control device for a hybrid vehicle includes a regenerative braking power control unit prohibiting or limiting execution of first regenerative braking to charge the battery with power generated by the regenerative power generation of the traveling motor generator during deceleration when it is determined that it is necessary to restrict charging of the battery. The regenerative braking power control unit causes both second regenerative braking to transmit rotary driving power to the engine by rotating the power generation motor generator by the power generated by the regenerative power generation, and combustion operation in which fuel is supplied to the engine and the fuel is burned to generate the rotary driving power at the engine, to be executed, under condition where the execution of the first regenerative braking is prohibited or limited.Type: ApplicationFiled: August 26, 2015Publication date: March 3, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu IKEDAYA, Shigetoshi HIRANO, Tadayoshi HIRAO, Takahiro OGUMA, Takuya SATO, Katsunori UEDA, Kentaro HONDA
-
Publication number: 20160059843Abstract: A vehicle includes a first motor, a second motor, a battery, a decider, a first calculator, a second calculator and a controller. The decider detects a state of the battery and determines whether the detected state is a state where charging the battery is restricted. The first calculator calculates, when the first motor generates the regenerative electric power under the state where charging the battery is restricted, a target energy consumption representing a target value of electric power that the second motor is to consume to drive the engine by using the regenerative electric power. The second calculator calculates an actual energy consumption that the second motor requests to maintain rotating speed of the engine. The controller adjusts angular acceleration of the engine and the second motor, using a difference between the target energy consumption and the actual energy consumption.Type: ApplicationFiled: July 7, 2015Publication date: March 3, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Takahiro OGUMA, Katsunori UEDA, Shigetoshi HIRANO, Tadayoshi HIRAO, Takuya SATO, Hisakazu IKEDAYA, Kentaro HONDA
-
Publication number: 20160059857Abstract: A regenerative control device for a hybrid vehicle includes a regenerative braking power control unit prohibiting or limiting execution of first regenerative braking to charge the battery with power generated by the regenerative power generation of the traveling motor generator during deceleration when it is determined that it is necessary to restrict charging of the battery. Under condition where the execution of the first regenerative braking is prohibited or limited, the regenerative braking power control unit causes second regenerative braking to transmit rotary driving power to the engine by rotating the power generation motor generator by the power generated by the regenerative power generation, to be executed when the operation unit is set to a regeneration level in an increasing direction, and causes the second regenerative braking to be stopped when the operation unit is set to a regeneration level in a decreasing direction.Type: ApplicationFiled: August 26, 2015Publication date: March 3, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu IKEDAYA, Katsunori UEDA, Kentaro HONDA, Shigetoshi HIRANO, Tadayoshi HIRAO, Takahiro OGUMA, Takuya SATO
-
Publication number: 20150367835Abstract: A regenerative control device of a vehicle an engine; a first motor; a second motor performing regenerative power generation; a battery connected to the first and second motors; and a heating device heating using heat, includes: a determiner determining whether the heating device is in operation or not, and determining whether charging the battery is regulated or not; and a controller performing parallel firing control in which a driving force is given to the engine by the first motor while burning fuel in the engine, during the regenerative power generation when the heating device is in operation and charging the battery is regulated, and setting a target torque of the engine in the parallel firing control to be equal to or lower than a burning limit torque of the engineType: ApplicationFiled: June 22, 2015Publication date: December 24, 2015Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Hisakazu IKEDAYA, Shigetoshi HIRANO, Katsunori UEDA, Kentaro HONDA, Tadayoshi HIRAO, Takahiro OGUMA, Takuya SATO
-
Patent number: 4396445Abstract: The turbine rotor unit comprises a ceramic rotor and a ceramic shaft. Connection or bonding of the rotor and the shaft is made by applying a slip of ceramic material to engaging sections of the rotor and the shaft and baking them for solidification of the slip. If metal-silicone is used as a material for the rotor and the shaft, the connection or bonding of them can be made without the slip.Type: GrantFiled: May 30, 1980Date of Patent: August 2, 1983Assignee: Nissan Motor Co., Ltd.Inventors: Naoto Sasaki, Kenji Nakayama, Tadayoshi Hirao