Patents by Inventor Takuya Hirai

Takuya Hirai 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: 20150298700
    Abstract: A running control device of a vehicle includes an engine with cylinders, a clutch connecting/disconnecting a power transmission path between the engine and wheels, and a variable mechanism to vary an intake air amount sucked into the cylinders. The running control device performs a normal running mode by transmitting engine drive force to the wheels, a neutral inertia running mode by disconnecting the power transmission path between the engine and the wheels, and a cylinder resting inertia running mode by resting at least a part of the cylinders while the power transmission path between the engine and the wheels is connected. The running control device makes the intake air amount sucked into the cylinders larger at the time of return from the neutral inertia running mode to the normal running mode as compared to the case of return from the cylinder resting inertia running mode to the normal running mode.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rentaro KUROKI, Takuya HIRAI, Masaki MITSUYASU, Jonggap KIM, Masaki MATSUNAGA, Yasunari KIDO, Takeaki SUZUKI, Takayuki KOGURE, Yukari OKAMURA, Akihiro SATO, Yusuke KINOSHITA
  • Publication number: 20150300274
    Abstract: A running control device of a vehicle includes an engine with a plurality of cylinders, a clutch connecting/disconnecting a power transmission path between the engine and wheels, a fuel pump transferring fuel toward an injector, and a fuel pressure control device controlling a fuel pressure in a transfer path of the fuel. The running control device of a vehicle performs a neutral inertia running mode performed with the power transmission path between the engine and the wheels disconnected, and a cylinder resting inertia running mode performed by resting at least a part of the cylinders of the engine with the power transmission path between the engine and the wheels connected, the fuel pressure during the neutral inertia running mode being made higher than the fuel pressure during the cylinder resting inertia running mode.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 22, 2015
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Rentaro KUROKI, Takuya HIRAI, Masaki MITSUYASU, Jonggap KIM, Masaki MATSUNAGA, Yasunari KIDO, Takeaki SUZUKI, Takayuki KOGURE, Yukari OKAMURA, Akihiro SATO, Yusuke KINOSHITA
  • Publication number: 20150300291
    Abstract: The container unit type cogeneration-using engine generator device is composed of a combination of a long generator container 20 in which an engine 21 and components on a generator main body side including a generator 22 driven by the engine are accommodated, and a short exhaust heat utilizing container in which a boiler 4 that generates steam and hot water for hot-water supply by utilizing exhaust heat of the engine and an exhaust heat utilizing apparatus including a heat exchanger 3 are accommodate. A combination container unit is configured by setting a reference surface A so that shorter walls on one end side of the both containers in a longer direction are respectively positioned on a same straight line, and making both longer walls of the long generator container and the short exhaust heat utilizing container to face each other and arranging the respective containers in parallel with longer direction across the facing walls 1b/20b by making the reference surface as a reference.
    Type: Application
    Filed: December 28, 2012
    Publication date: October 22, 2015
    Inventors: Tomokazu Yamanaka, Takuya Hirai, Shuichi Shimodaira, Hirokazu Narita, Takeshi Abe
  • Publication number: 20150298698
    Abstract: A running control device of a vehicle includes an engine with a plurality of cylinders and a clutch separating the engine and wheels, the running control device of a vehicle controls and supplies the clutch a line pressure acquired by adjusting an output oil pressure of an oil pump, the running control device of a vehicle is configured to execute a neutral inertia running mode that is an inertia running mode performed while the engine and the wheels are separated and a cylinder resting inertia running mode performed by stopping operation in at least a part of the cylinders of the engine while the engine and the wheels are coupled, the line pressure is low while the neutral inertia running mode is performed as compared to while the cylinder resting inertia running mode is performed.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Jonggap KIM, Masaki MITSUYASU, Rentaro KUROKI, Takuya HIRAI, Masaki MATSUNAGA, Yasunari KIDO, Takeaki SUZUKI, Takayuki KOGURE, Yukari OKAMURA, Akihiro SATO, Yusuke KINOSHITA
  • Publication number: 20150298701
    Abstract: A running control device has an engine coupling running mode enabling an engine brake running mode performed by coupling an engine and wheels with an engine brake applied by driven rotation of the engine, and an inertia running mode performed with an engine brake force lower than that of the engine brake running mode. The running control device includes a steering wheel steering angle as a condition of terminating the inertia running mode. The running control device performs a first inertia running mode with the rotation of the engine stopped and a second inertia running mode with the engine rotating. The first inertia running mode is terminated when the steering angle becomes equal to or greater than a predefined first determination value. The second inertia running mode is terminated when the steering angle becomes equal to or greater than a predefined second determination value larger than the first determination value.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 22, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeaki SUZUKI, Masaki MATSUNAGA, Yasunari KIDO, Takayuki KOGURE, Yukari OKAMURA, Rentaro KUROKI, Takuya HIRAI, Masaki MITSUYASU, Jonggap KIM, Akihiro SATO, Yusuke KINOSHITA
  • Publication number: 20150291165
    Abstract: A running control device of a vehicle including an engine, a connecting/disconnecting device separating the engine and wheels, and a transmission transmitting power of the engine toward the wheels, the running control device of a vehicle being configured to execute a normal running mode performed by using the power of the engine with the engine and the wheels coupled, a free-run inertia running mode that is an inertia running mode performed by separating the engine and the wheels and stopping the engine during running, and a neutral inertia running mode that is an inertia running mode performed by separating the engine and the wheels and operating the engine in a self-sustaining manner during running, the running control device of a vehicle setting a gear ratio of the transmission on a high vehicle speed side in the case of return from the free-run inertia running mode to the normal running mode.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 15, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaki MITSUYASU, Jonggap KIM, Rentaro KUROKI, Takuya HIRAI, Masaki MATSUNAGA, Yasunari KIDO, Takeaki SUZUKI, Takayuki KOGURE, Yukari OKAMURA, Akihiro SATO, Yusuke KINOSHITA
  • Publication number: 20150292435
    Abstract: The present invention obtains an engine generator device including: a longer generator container that houses a generator functional portion including an engine and a generator driven by the engine; and a shorter exhaust heat utilization container that houses a boiler utilizing the exhaust heat of the engine, and a heat exchanger. By effective utilization of the containers and by effective connection between the two containers, pipe and cable arrangement is not necessary. Further, by saving space, maintainability after the assembling is satisfactory.
    Type: Application
    Filed: December 28, 2012
    Publication date: October 15, 2015
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Tomokazu Yamanaka, Takuya Hirai, Shuichi Shimodaira, Hirokazu Narita, Takeshi Abe
  • Publication number: 20150291171
    Abstract: A running control device of a vehicle executes a normal running mode with an engine coupled to drive wheels, a first inertia running mode with the engine stopped during running and an engine brake force reduced as compared to the normal running mode, and a second inertia running mode with the engine rotating during running and the engine brake force reduced as compared to the normal running mode. A determining portion determines a necessity of a brake negative pressure during the first or second inertia running mode. The necessity of the brake negative pressure is a condition for returning from the first inertia running mode and the second inertia running mode to the normal running mode. An upper limit value of the necessity of the brake negative pressure for returning from the first inertia running mode is smaller than that for returning from the second inertia running mode.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 15, 2015
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
  • Publication number: 20150292812
    Abstract: A heat exchanger includes: a heat exchange body through which a fluid serving as a cooled object passes; and a coolant passage which is provided in at least one of a central portion and an outer circumferential portion of the heat exchange body, and through which a coolant exchanging heat with the heat exchange body flows, wherein the heat exchange body includes: a first heat transfer means which extends from a central portion to an outer circumferential portion; and a second heat transfer means which extends in a circumferential direction, and which intersects the first heat transfer means, a heat transfer efficiency of the first heat transfer means is greater than that of the second heat transfer means.
    Type: Application
    Filed: October 25, 2012
    Publication date: October 15, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Sho TOMITA, Rentaro KUROKI, Takuya HIRAI, Takeshi KITAYAMA
  • Publication number: 20150292434
    Abstract: A short waste-heat reuse container disposed adjacent to a 40-f container that contains a radiator 23, an engine 21, and a power generator 22 disposed in a longitudinal direction of the container, the waste-heat reuse container collecting waste heat of the engine and generating steam or hot water, the waste-heat reuse container containing a muffler 2 that muffles exhaust gas of the engine, a boiler 4 that transfers heat of the exhaust gas to water and generates steam, and a heat exchanger 3 that transfers heat of cooling water heated by the engine to water and generates hot water, wherein the muffler is disposed upright opposite to the boiler in the longitudinal direction of the waste-heat reuse container, an exhaust gas inlet 2a of the muffler being disposed on an upper wall of the container.
    Type: Application
    Filed: December 28, 2012
    Publication date: October 15, 2015
    Inventors: Tomokazu Yamanaka, Takuya Hirai, Shuichi Shimodaira, Hirokazu Narita, Takeshi Abe
  • Publication number: 20150284004
    Abstract: A running control device of a vehicle includes an engine, a clutch separating the engine and wheels, and a torque converter with a lockup clutch transmitting power of the engine toward the wheels, the running control device of a vehicle is configured to execute a neutral inertia running mode that is an inertia running mode performed while the engine and the wheels are separated and a cylinder resting inertia running mode performed by stopping operation in at least some of cylinders of the engine while the engine and the wheels are coupled, the lockup clutch has a weak engagement force while the neutral inertia running mode is performed as compared to while the cylinder resting inertia running mode is performed.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 8, 2015
    Inventors: Jonggap Kim, Masaki Mitsuyasu, Rentaro Kuroki, Takuya Hirai, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
  • Publication number: 20150279597
    Abstract: A relay switch has a coil such that a predetermined voltage is imposed on one end thereof and the other end is grounded with a resistor therebetween, and when the voltage of the coil is at least a predetermined value, the relay switch is turned on and a power source is supplied to an electronic apparatus. A transistor causes the voltage of the coil to be at least the predetermined value by means of drawing in the current flowing through the coil and causing the current to flow to the ground without passing through the resistor when starting the supply of the power source, and after the start of supply of the power source, gradually decreases the amount drawn in of the current flowing through the coil, causing a decrease in a manner so that the voltage of the coil does not fall below the predetermined value.
    Type: Application
    Filed: September 20, 2013
    Publication date: October 1, 2015
    Inventors: Takuya Hirai, Toshiki Ishii
  • Publication number: 20150274168
    Abstract: A running control device of a vehicle including an engine, a brake operation member, and a brake booster, is configured to execute an engine brake running mode performed with the engine coupled to wheels and an inertia running mode performed with an engine brake force made lower than that in the engine brake running mode. The running control device executes first and second inertia running modes. The first inertia running mode is terminated when a brake request amount becomes equal to or greater than a predefined first determination value while the first inertia running mode is performed. The second inertia running mode is terminated and a return to the engine brake running mode is made when the brake request amount becomes equal to or greater than a predefined second determination value larger than the first determination value while the second inertia running mode is performed.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 1, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita, Yasunari Kido
  • Publication number: 20150274166
    Abstract: A running control device of a vehicle includes an engine with a plurality of cylinders, and a clutch connecting/disconnecting a power transmission path between the engine and wheels, the running control device of a vehicle performing during an inertia running mode a neutral inertia running mode performed with the power transmission path between the engine and the wheels disconnected while the engine is kept operated, and a cylinder resting inertia running mode performed by resting at least a part of the cylinders of the engine while the power transmission path between the engine and the wheels is connected, the running control device of a vehicle increasing an operation region of performing the neutral inertia running mode in an operation region of performing the inertia running mode when idle learning performed in an idle operation state of the engine is incomplete, as compared to after completion of the idle learning.
    Type: Application
    Filed: October 31, 2012
    Publication date: October 1, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya HIRAI, Rentaro KUROKI, Masaki MITSUYASU, Jonggap KIM, Masaki MATSUNAGA, Yasunari KIDO, Takeaki SUZUKI, Takayuki KOGURE, Yukari OKAMURA, Akihiro SATO, Yusuke KINOSHITA
  • Publication number: 20150266480
    Abstract: A running control device is configured to execute an engine coupling running mode performed with an engine and wheels connected by a connecting/disconnecting device, a neutral inertia running mode performed with the engine separated from the wheels by the connecting/disconnecting device while the engine is supplied with fuel and allowed to perform self-sustaining rotation, and a free-run inertia running mode performed with the engine separated from the wheels by the connecting/disconnecting device while fuel supply to the engine is stopped to stop rotation. The neutral inertia running mode is terminated when an operation amount of the accelerator pedal becomes equal to or greater than a predefined first determination value. The free-run inertia running mode is terminated when an operation amount of the accelerator pedal becomes equal to or greater than a predefined second determination value larger than the first determination value.
    Type: Application
    Filed: October 31, 2012
    Publication date: September 24, 2015
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
  • Publication number: 20150236542
    Abstract: The purpose of the invention is to stabilize the output of a charging device by removing noise components back to the output side of the charging device. The charging device (100) charges a secondary battery (30) by using power supplied from an external power supply (20). A charging unit (102) has a primary coil (150) and a secondary coil (151), converts the power supplied from the external power supply (20) into a charging power, and supplies the charging power to the secondary battery (30). A noise removing unit (103) removes noise components included in the charging power that is supplied to the secondary battery (30) by the charging unit (102).
    Type: Application
    Filed: September 19, 2013
    Publication date: August 20, 2015
    Inventors: Toshiki Ishii, Takuya Hirai
  • Publication number: 20150211407
    Abstract: This invention provides a coolant composition for an internal combustion engine that can improve the energy efficiency of an internal combustion engine and a method for operating an internal combustion engine using such coolant composition. The coolant composition for an internal combustion engine of the invention has kinematic viscosity of 8.5 to 3,000 mm2/sec at 25° C. and 0.3 to 1.3 mm2/sec at 100° C. The method for operating an internal combustion engine of the invention is carried out with the use of such composition.
    Type: Application
    Filed: June 8, 2012
    Publication date: July 30, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takuya Hirai, Yuichi Shimasaki, Rentaro Kuroki, Syou Tomita, Minoru Yamashita, Kazuhiro Miyajima, Keiji Hayashi
  • Publication number: 20150166066
    Abstract: A controller is capable of controlling a coupled engine running mode, in which an engine is coupled to wheels and an engine brake is activated by driven rotation of the engine, and a coasting mode, in which an engine brake force is reduced with respect to that in the coupled engine running mode with mode with the engine brake on, and starts the coasting mode on the basis of the steering angle of a steering member. The controller starts the execution of a first coasting mode when the steering angle is equal to or less than a preset upper limit value and starts the execution of a second coasting mode when the steering angle is greater than the upper limit value. In the first coasting mode, the engine rotation is stopped, and in the second coasting mode, the engine remains rotating.
    Type: Application
    Filed: October 11, 2013
    Publication date: June 18, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita
  • Publication number: 20150166065
    Abstract: In consideration of an amplification effect of a braking force at the time of brake operation, there is provided a difference between upper-limits (?, ?) of a brake operation force (Brk) with which the execution of free-run coasting and neutral coasting is started, on the basis of whether or not a brake booster (42) can be filled with a negative pressure. Therefore, while the braking force at the time of brake operation is secured, the range of the brake operation force (Brk) with which coasting is executed can be enlarged, and an improvement in fuel economy can be made.
    Type: Application
    Filed: October 21, 2013
    Publication date: June 18, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Masaki Matsunaga, Yasunari Kido, Takeaki Suzuki, Takayuki Kogure, Yukari Okamura, Akihiro Sato, Yusuke Kinoshita
  • Publication number: 20150158491
    Abstract: An upper limit value of an upward gradient of a road surface for starting neutral coasting is set to be larger than an upper limit of the upward gradient of the road surface for starting free-run coasting, so, when the upward gradient is relatively large and a coasting distance is short, the vehicle is caused to travel in the neutral coasting, and stop and restart of the engine are not carried out. Therefore, a decrease in drivability of the vehicle is suppressed. When the upward gradient is relatively small and the coasting distance is long, the vehicle is caused to travel in the free-run coasting, and supply of fuel to the engine is stopped, so fuel economy of the vehicle is obtained. Thus, it is possible to achieve both fuel economy and drivability of the vehicle during coasting on an upward gradient.
    Type: Application
    Filed: October 15, 2013
    Publication date: June 11, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Takeaki Suzuki, Masaki Matsunaga, Yasunari Kido, Takayuki Kogure, Yukari Okamura, Rentaro Kuroki, Takuya Hirai, Masaki Mitsuyasu, Jonggap Kim, Akihiro Sato, Yusuke Kinoshita