Patents by Inventor Kuniaki Kaihara
Kuniaki Kaihara 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).
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Patent number: 9923391Abstract: A circuit includes a vehicle-side circuit, a charger-side circuit and a connecting part. The vehicle-side circuit includes a power source, a first resistor provided between the power source and the connecting part, a second resistor which is connected to the first resistor in series, a switch which turns on or off current supply from the power source, a voltage detector which detects a voltage at a connection point of the first resistor and the second resistor, a determining part which determines a state of connection between a vehicle-side connector and a charger-side connector and occurrence4 of a failure in the vehicle-side circuit based at least in part on the voltage detected by the voltage detector and an on/off state of the switch.Type: GrantFiled: February 17, 2016Date of Patent: March 20, 2018Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Yuya Suzuki, Kuniaki Kaihara, Hiroyuki Sakai, Atsushi Kodama, Takayuki Kono, Kohsuke Okada, Shohei Kawano
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Patent number: 9799934Abstract: A vehicle electric battery controlling apparatus is applied to a vehicle including an on-board charger to charge a battery in the vehicle with power supplied from an external power source, a heater to warm the battery, and a DC-DC converter to reduce the voltage of power from the battery and then supply the battery power to the heater. The vehicle electric battery controlling apparatus includes a DC-DC converter controller to drive the DC-DC converter to supply the battery power to the heater before the charge of the battery by the on-board charger, and an on-board charger controller to drive the on-board charger such that the power source for the heater is gradually shifted from the battery to the external power source, after the DC-DC converter is driven.Type: GrantFiled: February 26, 2015Date of Patent: October 24, 2017Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Kuniaki Kaihara, Shohei Kawano, Hiroyuki Sakai, Atsushi Kodama, Yuya Suzuki, Yoshiaki Nishio, Hirofumi Yagura, Makoto Kamachi
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Patent number: 9694692Abstract: A vehicle controlling system includes a high-voltage circuit including a motor for driving a vehicle and a generator driven by an engine; an intermediate-voltage circuit including a battery and having a potential lower than the potential of the high-voltage circuit; a low-voltage circuit having a potential lower than the potential of the intermediate-voltage circuit, accessories being disposed to the low-voltage circuit; a transformer disposed between the high-voltage circuit and the intermediate-voltage circuit; and a down converter disposed between the intermediate-voltage circuit and the low-voltage circuit.Type: GrantFiled: March 4, 2015Date of Patent: July 4, 2017Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Kuniaki Kaihara, Shohei Kawano, Hiroyuki Sakai, Atsushi Kodama, Yuya Suzuki
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Publication number: 20160241060Abstract: A circuit includes a vehicle-side circuit, a charger-side circuit and a connecting part. The vehicle-side circuit includes a power source, a first resistor provided between the power source and the connecting part, a second resistor which is connected to the first resistor in series, a switch which turns on or off current supply from the power source, a voltage detector which detects a voltage at a connection point of the first resistor and the second resistor, a determining part which determines a state of connection between a vehicle-side connector and a charger-side connector and occurrence4 of a failure in the vehicle-side circuit based at least in part on the voltage detected by the voltage detector and an on/off state of the switch.Type: ApplicationFiled: February 17, 2016Publication date: August 18, 2016Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Yuya SUZUKI, Kuniaki KAIHARA, Hiroyuki SAKAI, Atsushi KODAMA, Takayuki KONO, Kohsuke OKADA, Shohei KAWANO
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Patent number: 9156461Abstract: A control unit for a vehicle, which comprises an engine, a driving motor, an engaging/disengaging device, and a voltage raising device, includes a switching control unit and a voltage raising control unit controlling the voltage raising device. The switching control unit switches between a first driving mode in which the vehicle is driven by a driving force of the driving motor with the engaging/disengaging device released and a second driving mode in which the vehicle is driven by the driving force of the engine with the engaging/disengaging device engaged. In a case where a driving mode is switched from the first driving mode to the second driving mode, the switching control unit starts an engagement of the engaging/disengaging device and switches the driving mode to the second driving mode, after the voltage raising control unit starts the voltage raising control in the first driving mode.Type: GrantFiled: May 30, 2014Date of Patent: October 13, 2015Assignee: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Kuniaki Kaihara, Hiroyuki Sakai, Atsushi Kodama, Ryosuke Yabuta, Yuya Suzuki, Shohei Kawano
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Publication number: 20150251543Abstract: A vehicle controlling system includes a high-voltage circuit including a motor for driving a vehicle and a generator driven by an engine; an intermediate-voltage circuit including a battery and having a potential lower than the potential of the high-voltage circuit; a low-voltage circuit having a potential lower than the potential of the intermediate-voltage circuit, accessories being disposed to the low-voltage circuit; a transformer disposed between the high-voltage circuit and the intermediate-voltage circuit; and a down converter disposed between the intermediate-voltage circuit and the low-voltage circuit.Type: ApplicationFiled: March 4, 2015Publication date: September 10, 2015Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Kuniaki KAIHARA, Shohei KAWANO, Hiroyuki SAKAI, Atsushi KODAMA, Yuya SUZUKI
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Publication number: 20150239405Abstract: A vehicle electric battery controlling apparatus is applied to a vehicle including an on-board charger to charge a battery in the vehicle with power supplied from an external power source, a heater to warm the battery, and a DC-DC converter to reduce the voltage of power from the battery and then supply the battery power to the heater. The vehicle electric battery controlling apparatus includes a DC-DC converter controller to drive the DC-DC converter to supply the battery power to the heater before the charge of the battery by the on-board charger, and an on-board charger controller to drive the on-board charger such that the power source for the heater is gradually shifted from the battery to the external power source, after the DC-DC converter is driven.Type: ApplicationFiled: February 26, 2015Publication date: August 27, 2015Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Kuniaki KAIHARA, Shohei KAWANO, Hiroyuki SAKAI, Atsushi KODAMA, Yuya SUZUKI, Yoshiaki NISHIO, Hirofumi YAGURA, Makoto KAMACHI
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Publication number: 20140358345Abstract: A control unit for a vehicle, which comprises an engine, a driving motor, an engaging/disengaging device, and a voltage raising device, includes a switching control unit and a voltage raising control unit controlling the voltage raising device. The switching control unit switches between a first driving mode in which the vehicle is driven by a driving force of the driving motor with the engaging/disengaging device released and a second driving mode in which the vehicle is driven by the driving force of the engine with the engaging/disengaging device engaged. In a case where a driving mode is switched from the first driving mode to the second driving mode, the switching control unit starts an engagement of the engaging/disengaging device and switches the driving mode to the second driving mode, after the voltage raising control unit starts the voltage raising control in the first driving mode.Type: ApplicationFiled: May 30, 2014Publication date: December 4, 2014Applicant: MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAInventors: Kuniaki KAIHARA, Hiroyuki SAKAI, Atsushi KODAMA, Ryosuke YABUTA, Yuya SUZUKI, Shohei KAWANO
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Patent number: 6340016Abstract: A starting device for a direct-injection internal combustion engine by which starting can be completed swiftly, and trouble caused by self-ignition and sudden combustion by carrying out a normal spark-ignition can be prevented surely upon starting. The starting device has compression stroke cylinder identifying unit for identifying a cylinder whose piston is in its compression stroke while the internal combustion engine is stopped; start request determining unit for determining whether there is an engine start request; and start control unit for, when it is determined by the start request determining unit that there is an engine start request, injecting fuel into the compression stroke cylinder identified by the compression stroke cylinder identifying unit.Type: GrantFiled: March 17, 2000Date of Patent: January 22, 2002Assignee: Mitsubishi Jidosha Kogyo Kabushiki KaishaInventors: Katsunori Ueda, Kuniaki Kaihara, Hiromitsu Ando, Jun Takemura