Patents by Inventor Masaaki Katayama

Masaaki Katayama 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: 20190195707
    Abstract: There is provided a method for measuring a contact force applied to each tube constituting a tube bundle disposed in a fluid from a vibration damping member by using a probe inserted into each tube. Characteristic data defining a relationship between a value measured by the probe and the contact force is previously prepared. Then, the probe is inserted into the tube, and the contact force is calculated using the measurement value of the probe, based on the characteristic data.
    Type: Application
    Filed: July 10, 2017
    Publication date: June 27, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Yoichi Iwamoto, Masaaki Katayama
  • Publication number: 20190179986
    Abstract: There is provided a method for analyzing a vibration damping structure in which a tube bundle disposed in a fluid is supported by a vibration damping member disposed in a gap between tubes included in the tube bundle. The method includes a model making step of making a FEM model corresponding to the vibration damping structure, an error setting step of setting an error parameter for a parameter relating to an element included in the FEM model, and an analysis step of performing structural analysis by a finite-element method using the FEM model in which the error parameter is set.
    Type: Application
    Filed: July 21, 2017
    Publication date: June 13, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Masatsugu Monde, Naoki Ono, Masaaki Katayama, Daisuke Sato
  • Patent number: 10280852
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: May 7, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Takeshi Hashizume
  • Patent number: 10273890
    Abstract: The internal combustion engine comprises a swirl control valve able to change a strength of a swirl generated in a combustion chamber; a load sensor for detecting an engine load; and a control device for controlling the swirl control valve. The control device controls the swirl control valve, when the engine load detected by the load sensor is lower than a predetermined load, so that the swirl ratio is higher when a suction intake gas amount is increasing, compared to when it is decreasing.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: April 30, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Masaaki Katayama
  • Publication number: 20190018921
    Abstract: There is provided a contact force evaluation method for evaluating a contact force against a supporting member of a tube bundle positioned in a fluid and supported by the supporting member, including a contact force setting step of setting a contact force of the tube bundle, a probability density function calculation step of calculating a probability density function of a reaction force received by the supporting member from the tube bundle in response to a predetermined input, using a vibration analysis model of the tube bundle and the supporting member, a probability calculation step of calculating a probability that a reaction force equal to or higher than the set contact force occurs, based on the calculated probability density function, and an evaluation step of evaluating the set contact force, based on the calculated probability.
    Type: Application
    Filed: January 16, 2017
    Publication date: January 17, 2019
    Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.
    Inventors: Makoto Iwasaki, Kazuo Hirota, Shingo Nishida, Tetsuya Arikawa, Ryoichi Kawakami, Masaaki Katayama, Toshifumi Nariai, Kohei Yamamoto
  • Publication number: 20190017454
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Application
    Filed: September 14, 2018
    Publication date: January 17, 2019
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaaki KATAYAMA, Takeshi HASHIZUME
  • Patent number: 10138829
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Grant
    Filed: June 28, 2013
    Date of Patent: November 27, 2018
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Takeshi Hashizume
  • Publication number: 20180313278
    Abstract: The internal combustion engine comprises a swirl control valve able to change a strength of a swirl generated in a combustion chamber; a load sensor for detecting an engine load; and a control device for controlling the swirl control valve. The control device controls the swirl control valve, when the engine load detected by the load sensor is lower than a predetermined load, so that the swirl ratio is higher when a suction intake gas amount is increasing, compared to when it is decreasing.
    Type: Application
    Filed: April 27, 2018
    Publication date: November 1, 2018
    Inventor: Masaaki Katayama
  • Publication number: 20180267367
    Abstract: The present invention provides the following: a photo alignment method-use liquid crystal aligning agent used to obtain a photo alignment method-use liquid crystal alignment film that does not cause bright spots even when negative liquid crystals are used, and that is capable of achieving good after-image characteristics; a liquid crystal alignment film obtained from the liquid crystal aligning agent; and a liquid crystal display element provided with the liquid crystal aligning agent. Provided is the liquid crystal aligning agent which contains a polyimide or polyimide precursor obtained from a reaction between: a tetracarboxylic acid dianhydride represented by formula (1) (in the formula, X1 is as set forth in the present specification) or a derivative thereof; and a diamine component that contains a diamine represented by formula (2) (in the formula, R1, Z1 and n are as set forth in the present specification).
    Type: Application
    Filed: September 13, 2016
    Publication date: September 20, 2018
    Applicant: NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Kanako SUZUKI, Yuta KAWANO, Kohei GOTO, Masaaki KATAYAMA
  • Publication number: 20160153376
    Abstract: A control apparatus for an internal combustion engine according to the invention is applied to an internal combustion engine in which EGR gas and condensed water generated by an EGR cooler are supplied into a cylinder. The control apparatus calculates an equivalence ratio of the internal combustion engine, and controls an EGR valve and a condensed water supply valve such that, when the equivalence ratio is high, a supply rate of the condensed water increases and a supply rate of the EGR gas decreases relative to when the equivalence ratio is low.
    Type: Application
    Filed: June 28, 2013
    Publication date: June 2, 2016
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masaaki KATAYAMA, Takeshi HASHIZUME
  • Patent number: 9222435
    Abstract: A stirling engine 10A includes: cylinders 22 and 32; pistons 21 and 31, gas lubrication being performed between the corresponding cylinders 22 and 32 and the pistons 21 and 31; a crankcase 62 that is provided with a crankshaft 61 converting a reciprocating movement of the pistons 21 and 31 into a rotational movement; and a cooler 45 that cools a working fluid performing expansion work, wherein a start timing is adjusted based on an internal humidity of the crankcase 62.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: December 29, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Satoshi Komori, Masaaki Katayama, Manabu Tateno
  • Patent number: 9086032
    Abstract: A Stirling engine includes a base member that connects a housing portion with a heater that heats a working fluid using exhaust heat of a main engine, and a support member that supports the Stirling engine at the base member is provided.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: July 21, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Manabu Tateno, Masaaki Katayama, Satosi Komori
  • Patent number: 9010118
    Abstract: An output controller for a stirling engine is provided in a cooling system that causes common cooling water to flow through both the stirling engine and an internal combustion engine serving as a motive power source other than the stirling engine. The output controller for the stirling engine includes a temperature adjustment portion that adjusts a temperature of the cooling water supplied to the stirling engine. Specifically, the temperature adjustment portion includes a temperature adjustment valve capable of adjusting the temperature of the cooling water supplied to the stirling engine by switchably setting at least one of partial cooling paths and into a communication state.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: April 21, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Manabu Tateno, Satoshi Komori
  • Patent number: 9003787
    Abstract: An ECU is used for a Stirling engine that is provided with a starter that drives an output shaft of the Stirling engine. The ECU includes a control portion that commences an engine-starting drive of the starter within a phase interval, during which the torque of the Stirling engine that varies according to phase of the output shaft is relatively small. The phase interval is an interval during which the torque of the Stirling engine is less than or equal to the torque obtained when the compression begins. The phase at which the driving of the starter is commenced is set to the phase at which the torque of the Stirling engine becomes smaller than the torque obtained when the compression begins.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: April 14, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Manabu Tateno, Satoshi Komori
  • Patent number: 8984877
    Abstract: A heat exchanger for a stirling engine 10A of a twin-cylinder ? type includes a heat transfer tube group 70A formed with heat transfer tubes 71A causing a working fluid of the stirling engine 10A to flow between a high-temperature cylinder 20 and a low-temperature cylinder 30 arranged linearly and parallel to each other in the stirling engine. The heat transfer tube group 70A includes a rising section G1 extending upward, a falling section G2 extending downward, and a connecting section G3 connecting the rising section G1 and the falling section G2 in a turn-back manner, where the heat transfer tube group 70A is regarded as extending from one end or the other end thereof.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: March 24, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Daisaku Sawada, Masaaki Katayama
  • Patent number: 8978597
    Abstract: A cooling system 1A includes an internal combustion engine 10, a pump 31, a radiator 32, a main passage section 41, a stirling engine 20, a branch passage section 43 branching from the main passage section 41 at a first connection point P1 and joining a downstream part of the main passage section 41 from the first connection point P1 at a second connection point P2, and a thermostat 33. The first connection point P1 and the second connection point P2 are provided in a part of the main passage section 41 between the radiator 32 and the pump 31. The thermostat 33 is provided in another part of the main passage section 41 between the first connection point P1 and the second connection point P2.
    Type: Grant
    Filed: February 10, 2011
    Date of Patent: March 17, 2015
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Daisaku Sawada, Satoshi Komori
  • Patent number: 8904779
    Abstract: In a case of performing a static pressure gas lubrication by a stirling engine provided with a pair of cylinders of a high-temperature-side cylinder 20 and a low-temperature-side cylinder 30, a stirling engine gas lubrication structure is provided with an introduction pipe 70A for introducing a working fluid existing within a low-temperature working space into at least an inside of an expansion piston 21 of the expansion piston 21 and a compression piston 31, the low-temperature working space being included in a working space where the working fluid circulates between the cylinders 20 and 30, a temperature of the working fluid in the low-temperature working space lower than that of the working fluid in a working space of a high-temperature side cylinder 22 in a driving state.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: December 9, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Daisaku Sawada, Hiroshi Yaguchi, Manabu Tateno
  • Publication number: 20140230428
    Abstract: A stirling engine 10A includes: cylinders 22 and 32; pistons 21 and 31, gas lubrication being performed between the corresponding cylinders 22 and 32 and the pistons 21 and 31; a crankcase 62 that is provided with a crankshaft 61 converting a reciprocating movement of the pistons 21 and 31 into a rotational movement; and a cooler 45 that cools a working fluid performing expansion work, wherein a start timing is adjusted based on an internal humidity of the crankcase 62.
    Type: Application
    Filed: November 2, 2011
    Publication date: August 21, 2014
    Inventors: Satoshi Komori, Masaaki Katayama, Manabu Tateno
  • Patent number: 8776516
    Abstract: An exhaust heat recovery system includes a plurality of Starling engines. Heaters of the Starling engines are disposed in an exhaust passage that is a heat medium passage. An inside of the exhaust passage is partitioned with a partitioning member into a first exhaust passage and a second exhaust passage. The heater of the Starling engine disposed on an upstream side in a flowing direction of exhaust gas is provided in the first exhaust passage, and the heater of the Starling engine disposed on a downstream side in the flowing direction of the exhaust gas is provided in the second exhaust passage.
    Type: Grant
    Filed: May 22, 2009
    Date of Patent: July 15, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Masaaki Katayama, Daisaku Sawada, Hiroshi Yaguchi
  • Patent number: 8763514
    Abstract: A gas lubrication structure is provided with a high-temperature-side cylinder, an expansion piston lubricated relative to the high-temperature-side cylinder by gas, and a layer provided to the outer peripheral surface of the expansion piston and composed of a material flexible and having a higher linear expansion coefficient than the base material of the expansion piston. The thickness of the layer under normal temperatures is not less than the size of the clearance formed between the layer and the high-temperature-side cylinder. Also, even if the layer is thermally expanded under use conditions, the layer under normal temperatures has a thickness enabling a clearance to be formed between the layer and the high-temperature-side cylinder.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: July 1, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroshi Yaguchi, Daisaku Sawada, Masaaki Katayama