Patents by Inventor Shinya Kondou
Shinya Kondou 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: 10124805Abstract: A work vehicle includes: an engine; a plurality of drive wheels driven by the engine; and an operation controller executes first drive force control that brakes a slipping drive wheel out of the plurality of drive wheels and executes second drive force control that reduces output of the engine in accordance with the slip ratio of the slipping drive wheel during execution of the first drive force control.Type: GrantFiled: July 31, 2014Date of Patent: November 13, 2018Assignee: Komatsu Ltd.Inventors: Ryuuen Kou, Akiharu Nishijima, Shinya Kondou
-
Publication number: 20170210386Abstract: A work vehicle includes: an engine; a plurality of drive wheels driven by the engine; and an operation controller executes first drive force control that brakes a slipping drive wheel out of the plurality of drive wheels and executes second drive force control that reduces output of the engine in accordance with the slip ratio of the slipping drive wheel during execution of the first drive force control.Type: ApplicationFiled: July 31, 2014Publication date: July 27, 2017Inventors: Ryuuen Kou, Akiharu Nishijima, Shinya Kondou
-
Patent number: 9652906Abstract: A rollover predictor judgment device for a combination vehicle includes a lateral acceleration sensor, a yaw rate sensor, an articulate angle sensor, and a judgment device in a form of a retarder controller. The judgment device judges that the combination vehicle is in a rollover predictor status when a first lateral acceleration calculated based on a detection value of the lateral acceleration sensor is a first threshold or more or when a second lateral acceleration calculated based on a detection value of the yaw rate sensor and a detection value of the articulate angle sensor is a second threshold or more.Type: GrantFiled: October 23, 2015Date of Patent: May 16, 2017Assignee: Komatsu Ltd.Inventors: Shinya Kondou, Shunsuke Mori
-
Publication number: 20170116796Abstract: A rollover predictor judgment device (30) for a combination vehicle (1) includes a lateral acceleration sensor (26), a yaw rate sensor (27), an articulate angle sensor (23), and a judgment device in a form of a retarder controller (32). The judgment device judges that the combination vehicle is in a rollover predictor status when a first lateral acceleration calculated based on a detection value of the lateral acceleration sensor (26) is a first threshold or more or when a second lateral acceleration calculated based on a detection value of the yaw rate sensor (27) and a detection value of the articulate angle sensor (23) is a second threshold or more.Type: ApplicationFiled: October 23, 2015Publication date: April 27, 2017Inventors: Shinya Kondou, Shunsuke Mori
-
Patent number: 9574659Abstract: A work vehicle including a transmission that transmits power of an engine to wheels at a plurality of different transmission gear ratios, the work vehicle traveling while maintaining a targeted speed by controlling a degree of opening of an accelerator, brakes, and the transmission, wherein the work vehicle includes a controller which inhibits change in the transmission gear ratio of the transmission when the transmission shifts up before lapse of a first predetermined time after the transmission shifts down while the vehicle is running downhill and then before a second predetermined time elapses, the transmission shifts down while the vehicle is running downhill.Type: GrantFiled: July 12, 2013Date of Patent: February 21, 2017Assignee: Komatsu Ltd.Inventors: Shinya Kondou, Ryuuen Kou
-
Publication number: 20160208914Abstract: A work vehicle including a transmission that transmits power of an engine to wheels at a plurality of different transmission gear ratios, the work vehicle travelling while maintaining a targeted speed by controlling a degree of opening of an accelerator, brakes, and the transmission, wherein the work vehicle includes a controller which inhibits change in the transmission gear ratio of the transmission when the transmission shifts up before lapse of a first predetermined time after the transmission shifts down while the vehicle is running downhill and then before a second predetermined time elapses, the transmission shifts down while the vehicle is running downhill.Type: ApplicationFiled: July 12, 2013Publication date: July 21, 2016Applicant: KOMATSU LTD.Inventors: Shinya Kondou, Ryuuen Kou
-
Patent number: 8429902Abstract: A secondary air supply system includes a secondary air supply device that supplies secondary air to the upstream side of an exhaust emission control device installed in an exhaust system of an internal combustion engine, and an ECU that estimates the secondary air temperature, and estimates the exhaust gas temperature after supply of secondary air, based on the result of estimation. The ECU starts or inhibits supply of secondary air by the secondary air supply device, depending on the result of estimation of the exhaust gas temperature. It is thus possible to prevent discharge of unburned fuel components, by estimating the exhaust gas temperature after supply of secondary air in view of the secondary air temperature.Type: GrantFiled: April 17, 2008Date of Patent: April 30, 2013Assignee: Toyota Jidosha Kabushiki KaishaInventor: Shinya Kondou
-
Patent number: 7890242Abstract: Immediately after startup of the engine, secondary air is supplied by an air pump into each exhaust branch passage via a secondary-air supply passage. A pressure sensor is disposed in the secondary-air supply passage. An output voltage of the pressure sensor decreases as the battery voltage decreases. When the battery voltage is lower than a permissible voltage, the output value of the pressure sensor is inhibited from being used as an output value representing the pressure. Thus, atmospheric pressure can be accurately detected.Type: GrantFiled: November 30, 2007Date of Patent: February 15, 2011Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinya Kondou, Yasuhiro Oi
-
Publication number: 20100126149Abstract: A secondary air supply system includes a secondary air supply device that supplies secondary air to the upstream side of an exhaust emission control device installed in an exhaust system of an internal combustion engine, and an ECU that estimates the secondary air temperature, and estimates the exhaust gas temperature after supply of secondary air, based on the result of estimation. The ECU starts or inhibits supply of secondary air by the secondary air supply device, depending on the result of estimation of the exhaust gas temperature. It is thus possible to prevent discharge of unburned fuel components, by estimating the exhaust gas temperature after supply of secondary air in view of the secondary air temperature.Type: ApplicationFiled: April 17, 2008Publication date: May 27, 2010Applicant: TOYOTA-JIDOSHA KABUSHIKI KAISHAInventor: Shinya Kondou
-
Publication number: 20100028167Abstract: Immediately after startup of the engine, secondary air is supplied by an air pump into each exhaust branch passage via a secondary-air supply passage. A pressure sensor is disposed in the secondary-air supply passage. An output voltage of the pressure sensor decreases as the battery voltage decreases. When the battery voltage is lower than a permissible voltage, the output value of the pressure sensor is inhibited from being used as an output value representing the pressure. Thus, atmospheric pressure can be accurately detected.Type: ApplicationFiled: November 30, 2007Publication date: February 4, 2010Applicant: Toyota Jidosha Kabushiki KaishaInventors: Shinya Kondou, Yasuhiro Oi
-
Publication number: 20100018189Abstract: A control system of an internal combustion engine includes: a pressure detecting mechanism detecting a pressure in a gas passage which is communicated with the engine; and a controller acquiring a reference pressure as the pressure which is detected immediately after the controller is actuated, and controlling an actuator of the engine based on the reference pressure. The controller is inhibited from acquiring the reference pressure as the detected pressure when the controller is re-actuated after the controller is reset due to a factor other than a turned-off operation of an ignition switch.Type: ApplicationFiled: December 21, 2007Publication date: January 28, 2010Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Yasuhiro Oi, Shinya Kondou
-
Patent number: 6755165Abstract: The invention controls the opening of an oil control valve (OCV), which controls the operation of a variable valve timing mechanism in an internal combustion engine, according to a duty ratio of a driving pulse signal. An electronic control unit (ECU) performs feedback control on a duty ratio DR of the driving pulse signal during ordinary operation based on a target value and an actual value of the valve timing. When the oil temperature is low (i.e., when the operating oil viscosity is high), the ECU controls the valve timing of the engine by repeating an inching operation that maintains the duty ratio DR of the signal at a large value (i.e., 0% or 100%) for a predetermined hold time so as to operate the variable valve timing mechanism, and then maintaining the duty ratio DR of the signal at a value (50%) that does not operate the variable valve timing mechanism.Type: GrantFiled: February 27, 2003Date of Patent: June 29, 2004Assignee: Toyota Jidosha Kabushiki KaishaInventors: Shinya Kondou, Hiroyasu Koyama
-
Publication number: 20030164149Abstract: The invention controls the opening of an oil control valve (OCV), which controls the operation of a variable valve timing mechanism in an internal combustion engine, according to a duty ratio of a driving pulse signal. An electronic control unit (ECU) performs feedback control on a duty ratio DR of the driving pulse signal during ordinary operation based on a target value and an actual value of the valve timing. When the oil temperature is low (i.e., when the operating oil viscosity is high), the ECU controls the valve timing of the engine by repeating an inching operation that maintains the duty ratio DR of the signal at a large value (i.e., 0% or 100%) for a predetermined hold time so as to operate the variable valve timing mechanism, and then maintaining the duty ratio DR of the signal at a value (50%) that does not operate the variable valve timing mechanism.Type: ApplicationFiled: February 27, 2003Publication date: September 4, 2003Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Shinya Kondou, Hiroyasu Koyama