Patents by Inventor Yoshio Yamashita

Yoshio Yamashita 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: 20150354475
    Abstract: An internal combustion engine includes a control unit determining the occurrence or non-occurrence of dew condensation in a tip portion of a nozzle based on a nozzle heat receiving amount of an injector and a nozzle tip temperature of the injector at a point in time when ignition is turned OFF and performing nozzle corrosion prevention control when the dew condensation is determined to occur in the nozzle tip portion. The control unit calculates a nozzle tip temperature reduction rate based on the nozzle heat receiving amount, calculates a dew point arrival time based on the reduction rate, and determines the occurrence or non-occurrence of the dew condensation in the nozzle tip portion based on the dew point arrival time.
    Type: Application
    Filed: January 15, 2014
    Publication date: December 10, 2015
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masato IKEMOTO, Masayoshi NAKAGAWA, Takashi MATSUMOTO, Yoshio YAMASHITA
  • Publication number: 20150027387
    Abstract: The influenced of condensed water on an EGR device is alleviated. A device (100) that controls a cooling system including adjusting means for being able to adjust a circulation amount of coolant in a first flow passage, including an engine cooling flow passage, an EGR cooling flow passage and a radiator flow passage, and a second flow passage, including the engine cooling flow passage, the EGR cooling flow passage and a bypass flow passage and not including the radiator flow passage, includes: measuring means for measuring a temperature of the coolant; limiting means for limiting circulation of the coolant at starting an internal combustion engine; and control means for circulating the coolant preferentially through the second flow passage via control over the adjusting means based on the Measured temperature in a period in which circulation of the coolant is limited.
    Type: Application
    Filed: December 19, 2011
    Publication date: January 29, 2015
    Inventors: Nobumoto Ohashi, Taro Aoyama, Naoya Okamoto, Yoshio Yamashita, Yuki Haba, Hajime Takagawa, Koki Uno, Naoki Takeuchi, Masashi Shinoda, Teruhiko Miyake, Koji Nakayama
  • Publication number: 20140330542
    Abstract: A computer-based method and system brings together data from two business domains: real-time actual plant status operation data and predictive process simulation data based upon a design specification. This method and system correlates the plant data and the simulation data, and displays the results side-by-side for the user. The results assist the user, to determine whether the plant is operating properly, and to make further improvements to both the plant assets and to the simulation models. The invention assists with monitoring, maintaining, trouble shooting, and problem solving of plant operation. The invention facilitates a progressive visual collaborative environment between plant operation and process engineering teams, where engineers from respective domains may socialize and trouble shoot problems.
    Type: Application
    Filed: May 2, 2013
    Publication date: November 6, 2014
    Applicant: Aspen Technology, Inc.
    Inventors: Ashok R. Subramanian, Simon Lingard, Yoshio Yamashita
  • Patent number: 8813493
    Abstract: A supercharger control device for an internal combustion engine is preferably applied to a system having a first supercharger and a second supercharger. A switching supercharging pressure setting unit sets a switching supercharging pressure used in case of switching a mode for operating the first supercharger and the second supercharger, based on a difference between a target supercharging pressure and an actual supercharging pressure. When the actual supercharging pressure reaches the switching supercharging pressure, a switching control unit performs a control of switching the mode. Therefore, it becomes possible to appropriately prevent the overshoot of the supercharging pressure at the time of switching the mode.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: August 26, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kazuki Iwatani, Taro Aoyama, Yoshio Yamashita, Hiroshi Oyagi
  • Patent number: 8763396
    Abstract: In a vehicle, which is provided with: a primary turbo and a secondary turbo, each of which is of an exhaust driven type; an exhaust changeover valve and an intake changeover valve, which are placed in a secondary exhaust passage and a secondary intake passage corresponding to the secondary turbo, respectively; and an intake bypass valve placed in an intake bypass passage, an ECU sets the opening/closing state of each changeover valve to an opening/closing state corresponding to a twin turbo mode at the time of engine stop, and it uses the drive control of each changeover valve which is necessitated in the transition to a single turbo mode at the engine start, thereby performing the sticking detection of the changeover valve at the same time.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: July 1, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Oyagi, Yoshio Yamashita, Kazuki Iwatani, Taro Aoyama
  • Patent number: 8297407
    Abstract: An oil pan is provided with an oil pan separator that partitions a first chamber that communicates with a moving part inside a cylinder block and a second chamber outside the first chamber. A communicating hole is provided to a bottom panel of the oil pan separator. The communicating hole is shielded from a strainer.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: October 30, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Taiichi Mori, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Yoshio Yamashita, Kunihiko Hayashi
  • Patent number: 8161920
    Abstract: In the cylinder block of an engine including a heat storage apparatus, a water jacket is formed between a cylinder bore wall that forms a cylinder bore and a cylinder block outer wall. An actuator is installed on the cylinder block outer wall. A container is housed in the water jacket. A coolant temperature sensor is installed on the upper portion of the container. An ECU determines the state of a heat storage agent in the container and the state of the container, based on information on the temperature of coolant determined by the coolant temperature sensor.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: April 24, 2012
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kunihiko Hayashi, Hideo Kobayashi, Katuhiko Arisawa, Yoshio Yamashita, Kenichi Yamada
  • Publication number: 20120037456
    Abstract: An oil pan is provided with an oil pan separator that partitions a first chamber that communicates with a moving part inside a cylinder block and a second chamber outside the first chamber. A communicating hole is provided to a bottom panel of the oil pan separator. The communicating hole is shielded from a strainer.
    Type: Application
    Filed: October 21, 2011
    Publication date: February 16, 2012
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Taiichi Mori, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Yoshio Yamashita, Kunihiko Hayashi
  • Publication number: 20110289919
    Abstract: The subject is to efficiently detect the sticking of changeover valves for realizing a plurality of supercharging modes in a vehicle provided with a plurality of superchargers, and also to realize preferable fail-safe in cases where the sticking is detected. In a vehicle, which is provided with: a primary turbo and a secondary turbo, each of which is of an exhaust driven type; an exhaust changeover valve and an intake changeover valve, which are placed in a secondary exhaust passage and a secondary intake passage corresponding to the secondary turbo, respectively; and an intake bypass valve placed in an intake bypass passage, an ECU sets the opening/closing state of each changeover valve to an opening/closing state corresponding to a twin turbo mode at the time of engine stop, and it uses the drive control of each changeover valve which is necessitated in the transition to a single turbo mode at the engine start, thereby performing the sticking detection of the changeover valve at the same time.
    Type: Application
    Filed: January 26, 2009
    Publication date: December 1, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroshi Oyagi, Yoshio Yamashita, Kazuki Iwatani, Taro Aoyama
  • Patent number: 8066100
    Abstract: An oil pan is provided with an oil pan separator that partitions a first chamber that communicates with a moving part inside a cylinder block and a second chamber outside the first chamber. A communicating hole is provided to a bottom panel of the oil pan separator. The communicating hole is shielded from a strainer.
    Type: Grant
    Filed: October 5, 2005
    Date of Patent: November 29, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Taiichi Mori, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Yoshio Yamashita, Kunihiko Hayashi
  • Patent number: 8037851
    Abstract: A heat accumulator (1) is formed by connecting a first container (4) and a second container (5) using a spring (6). The first container (4) has a wall-shaped inner side wall that corresponds to the shape of a cylinder bore wall (7). Provided on this inner side wall is a flexible structural part (8). The flexible structural part (8) is formed of highly elastic resin. The second container (5) has a similar structure. A heat storage medium within the first container (4) and the second container (5) absorbs heat, which generates a change of phase from a solid to a liquid. When this happens, the volume of the heat storage medium increases. The increase in the heat storage medium projects the flexible structural part (8), and separates the first container (4) and the second container (5) from the cylinder bore wall (7).
    Type: Grant
    Filed: February 8, 2007
    Date of Patent: October 18, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Yoshio Yamashita, Kunihiko Hayashi
  • Patent number: 8020666
    Abstract: An oil pan separator 132 is disposed so as to divide a space within an oil pan 130 into a first chamber 30a and a second chamber 30b. The oil pan separator 132 has a protrusion 132b formed at a low position in such a manner that a portion of the first chamber 30a protrudes into the second chamber 30b. A protrusion upper-plate 132b1, which serves as an upper end portion of the protrusion 132b, is provided with an oil feed valve 138, which is a one-way valve, for allowing substantially only outflow of oil from the first chamber 30a to the second chamber 30b.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: September 20, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshio Yamashita, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Kunihiko Hayashi, Taiithi Mori
  • Publication number: 20110146634
    Abstract: A supercharger control device for an internal combustion engine is preferably applied to a system having a first supercharger and a second supercharger. A switching supercharging pressure setting unit sets a switching supercharging pressure used in case of switching a mode for operating the first supercharger and the second supercharger, based on a difference between a target supercharging pressure and an actual supercharging pressure. When the actual supercharging pressure reaches the switching supercharging pressure, a switching control unit performs a control of switching the mode. Therefore, it becomes possible to appropriately prevent the overshoot of the supercharging pressure at the time of switching the mode.
    Type: Application
    Filed: December 11, 2008
    Publication date: June 23, 2011
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kazuki Iwatani, Taro Aoyama, Yoshio Yamashita, Hiroshi Oyagi
  • Patent number: 7946388
    Abstract: An oil temperature sensor is externally mounted on a side plate of an oil pan cover that constitutes an external cover for an oil pan apparatus. The oil temperature sensor can output a signal in accordance with the oil temperature prevailing near a thermostat valve apparatus in a second chamber. If the second chamber oil temperature rises immediately after startup of an engine, a CPU judges that an open valve failure has occurred, that is, the thermostat valve apparatus is stuck open. If the oil temperature of the second chamber is not raised when an adequate amount of time has elapsed after the end of a warm-up operation, the CPU judges that a closed valve failure has occurred, that is, the thermostat valve apparatus is stuck closed.
    Type: Grant
    Filed: January 16, 2006
    Date of Patent: May 24, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideo Kobayashi, Katuhiko Arisawa, Yoshio Yamashita, Kunihiko Hayashi
  • Patent number: 7819093
    Abstract: A hydraulic control apparatus (1) is provided with an oil pump (4) that draws oil from an oil pan (3) due to the rotation of the crankshaft, a piston jet (6) that open when the hydraulic pressure of the oil that has been drawn from this oil pump (4) attains a valve opening pressure Qa and injects oil toward a piston through an oil injection path (5), a relief valve (8) that is disposed on an oil return path (7) and opens when the hydraulic pressure of the oil that has been drawn by the oil pump (4) has attained a valve opening pressure Qb, and a switching valve (9) that is disposed on the oil return path (7). The valve opening pressure Qb is set to a pressure that is lower than that of the valve opening pressure Qa.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 26, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Yoshio Yamashita, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Kunihiko Hayashi
  • Publication number: 20100162972
    Abstract: In the cylinder block of an engine including a heat storage apparatus, a water jacket is formed between a cylinder bore wall that forms a cylinder bore and a cylinder block outer wall. An actuator is installed on the cylinder block outer wall. A container is housed in the water jacket. A coolant temperature sensor is installed on the upper portion of the container. An ECU determines the state of a heat storage agent in the container and the state of the container, based on information on the temperature of coolant determined by the coolant temperature sensor.
    Type: Application
    Filed: June 4, 2007
    Publication date: July 1, 2010
    Inventors: Kunihiko Hayashi, Hideo Kobayashi, Fatuhiko Arisawa, Yoshio Yamashita, Kenichi Yamada
  • Patent number: 7654241
    Abstract: A dual-chamber oil pan includes an oil pan provided below an engine block, an oil pan separator that is provided within the oil pan and defines a first chamber communicating with the engine block, and a second chamber provided around the first chamber, and a suction port disposed within the first chamber. The first chamber includes a large-capacity portion including a bottom portion of the oil pan separator, and a small-capacity portion located above and integrally formed with the large-capacity portion.
    Type: Grant
    Filed: March 6, 2006
    Date of Patent: February 2, 2010
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hideo Kobayashi, Katuhiko Arisawa, Yoshio Yamashita, Kunihiko Hayashi, Tametoshi Mizuta
  • Patent number: 7647900
    Abstract: An engine cooling apparatus includes a coolant inlet of a block water jacket formed in a cylinder block, wherein coolant is introduced into the block water jacket through the coolant inlet, a flow-directing plate that is disposed in the block water jacket at a position downstream of the coolant inlet, and that directs the coolant, which has been introduced into the block water jacket through the coolant inlet, toward a head water jacket and a control portion that controls inflow of the coolant from the head water jacket into the block water jacket.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: January 19, 2010
    Assignee: Toyota Jidosha Kabuhsiki Kaisha
    Inventors: Kunihiko Hayashi, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Yoshio Yamashita
  • Publication number: 20090229561
    Abstract: A hydraulic control apparatus (1) is provided with an oil pump (4) that draws oil from an oil pan (3) due to the rotation of the crankshaft, a piston jet (6) that open when the hydraulic pressure of the oil that has been drawn from this oil pump (4) attains a valve opening pressure Qa and injects oil toward a piston through an oil injection path (5), a relief valve (8) that is disposed on an oil return path (7) and opens when the hydraulic pressure of the oil that has been drawn by the oil pump (4) has attained a valve opening pressure Qb, and a switching valve (9) that is disposed on the oil return path (7). The valve opening pressure Qb is set to a pressure that is lower than that of the valve opening pressure Qa.
    Type: Application
    Filed: October 13, 2006
    Publication date: September 17, 2009
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Yoshio Yamashita, Hideo Kobayashi, Katuhiko Arisawa, Kenichi Yamada, Kunihiko Hayashi
  • Patent number: 7590559
    Abstract: This invention provides an information processing system which executes settlement processing for a plurality of orders all at once. To implement this system, an estimated amount is calculated by estimate calculation modules (115A-115C) for each order received at a printsite (113). A plurality of calculated estimated amounts are received by a photosite (107) and totalized to calculate the charge amount, and charge amount settlement is requested.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: September 15, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Katsuhisa Ogawa, Yoshio Yamashita