Patents by Inventor Toru Kawatani
Toru Kawatani 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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Publication number: 20240132186Abstract: In a ship control system of one embodiment, a route command unit outputs a route command including a target ship position and a target bow direction of a ship. An information detector detects ship information including an actual ship position and an actual bow direction of a ship. An external force vector estimation unit estimates an external force vector received by a ship, using the ship information and a hull motion model related to a hull motion of the ship. A control command unit controls both rotational frequency of a main engine and a rudder angle of a ship, based on the route command, the ship information, and the external force vector.Type: ApplicationFiled: October 24, 2023Publication date: April 25, 2024Inventors: Toru KAWATANI, Hiroki TANAKA, Takatsugu SAKAKIBARA, Naoyuki KAWASAKI, Ryo YAMAGUCHI, Hironobu UETAKE, Naoki SHIMADA, Kenta ABE
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Publication number: 20240132187Abstract: A ship monitoring system includes: a shipboard information processing apparatus and including a shipboard communication unit and an information acquisition unit; and a support information processing apparatus and including: a support side communication unit capable of communicating with the shipboard communication unit; a time lag identification unit; and a state prediction unit. The time lag identification unit identifies a time from transmission of the ship motion information from the shipboard communication unit to reception of the ship motion information by the support side communication unit as a reception time lag. The state prediction unit inputs the ship motion information and the reception time lag to a ship motion model related to the ship motion of the ship to predict a motion state of the ship ahead of a motion state of the ship indicated by the ship motion information by a period of time based on the reception time lag.Type: ApplicationFiled: October 24, 2023Publication date: April 25, 2024Inventors: Toru KAWATANI, Hiroki TANAKA, Takatsugu SAKAKIBARA, Naoyuki KAWASAKI, Ryo YAMAGUCHI, Hironobu UETAKE, Naoki SHIMADA, Kenta ABE
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Publication number: 20240134377Abstract: In a ship control system of one embodiment, a main engine controller performs, when controlling the rotational frequency of a main engine based on a target ship speed of a ship, feedback control of an actual ship speed of the ship to perform ship speed control for bringing the actual ship speed closer to the target ship speed. A turning judgment unit judges whether or not the ship will turn. A control change unit performs, when the turning judgment unit has judged that the ship will turn, lowering processing for lowering the responsiveness of the ship speed control.Type: ApplicationFiled: October 24, 2023Publication date: April 25, 2024Inventors: Toru KAWATANI, Hiroki TANAKA, Takatsugu SAKAKIBARA, Naoyuki KAWASAKI, Ryo YAMAGUCHI, Hironobu UETAKE, Naoki SHIMADA, Kenta ABE
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Patent number: 7497078Abstract: An exhaust gas purifying system reliably detects an amount of accumulated particulates, lengthens forced regeneration intervals, and improves fuel efficiency. The exhaust gas purifying system comprises: a particulate filter 22 disposed in an exhaust system of an internal combustion engine 2 and collecting particulates from exhaust gas, and an NO2 generating unit 21 upstream of or in the particulate filter 22; a discharged particulate amount calculating unit A1 calculates an amount Me of discharged particulates on the basis of an excess air ratio ?; a burnt particulate amount calculating unit A2 calculates an amount Mb of burnt particulates on the basis of the temperature of exhaust gas in front of the particulate filter or the temperature of the particulate filter; and a particulate accumulation amount calculating unit calculates an amount Ma of accumulated particulates on the basis of the amount Me of discharged particulates or the amount Mb of burnt particulates.Type: GrantFiled: October 16, 2003Date of Patent: March 3, 2009Assignee: Mitsubishi Fuso Truck and Bus CorporationInventors: Satoshi Hiranuma, Ritsuko Shinozaki, Yoshinori Takahashi, Yoshinaka Takeda, Reiko Doumeki, Shinichi Saito, Toru Kawatani, Takeshi Hashizume, Kenji Kawai
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Publication number: 20090025370Abstract: An auxiliary agent supply means (32, 58) is provided to supply, upstream of an exhaust gas purification means (24, 56, 78), an auxiliary agent for maintaining the exhaust gas purifying function of the exhaust gas purification means (24, 56, 78). A control means (38) for controlling the auxiliary agent supply means (32, 58), thereby regulating the amount of the auxiliary agent supplied includes a standard supply quantity determination section (40, 50, 68, 86) for determining standard supply quantity of the auxiliary agent required to maintain the exhaust gas purifying function, a target supply quantity determination section (42, 52, 70, 88) for determining target supply quantity of the auxiliary agent, by correcting the standard supply quantity on the basis of exhaust pressure, and a supply control section (44, 54, 72, 90) for controlling the auxiliary agent supply means to supply the auxiliary agent in the target supply quantity.Type: ApplicationFiled: February 24, 2006Publication date: January 29, 2009Applicant: MITSUBISHI FUSO TRUCK AND BUS CORPORATIONInventors: Nobuhiro Kondo, Toru Kawatani, Yoshinaka Takeda, Hitoshi Yokomura, Minehiro Murata
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Patent number: 7104049Abstract: An exhaust gas purification system includes an oxygen mass flow rate detecting unit for detecting or calculating a mass flow rate of oxygen fed to a filter and a regeneration end determining unit for determining a regeneration end of the filter in accordance with information provided from the oxygen mass flow rate detecting-unit and upon arrival of an integrated value of the oxygen mass flow rate at a predetermined value during regeneration of the filter.Type: GrantFiled: March 24, 2004Date of Patent: September 12, 2006Inventors: Satoshi Hiranuma, Yoshinaka Takeda, Toru Kawatani, Reiko Doumeki
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Publication number: 20060107658Abstract: An exhaust gas purifying system reliably detects an amount of accumulated particulates, lengthens forced regeneration intervals, and improves fuel efficiency. The exhaust gas purifying system comprises: a particulate filter 22 disposed in an exhaust system of an internal combustion engine 2 and collecting particulates from exhaust gas, and an NO2 generating unit 21 upstream of or in the particulate filter 22; a discharged particulate amount calculating unit A1 calculates an amount Me of discharged particulates on the basis of an excess air ratio ?; a burnt particulate amount calculating unit A2 calculates an amount Mb of burnt particulates on the basis of the temperature of exhaust gas in front of the particulate filter or the temperature of the particulate filter; and a particulate accumulation amount calculating unit calculates an amount Ma of accumulated particulates on the basis of the amount Me of discharged particulates or the amount Mb of burnt particulates.Type: ApplicationFiled: October 16, 2003Publication date: May 25, 2006Applicant: MITSUBISHI FUSO TRUCK AND BUS CORPORATIONInventors: Satoshi Hiranuma, Ritsuko Shinozaki, Yoshinori Takahashi, Yoshinaka Takeda, Reiko Doumeki, Shinichi Saito, Toru Kawatani, Takeshi Hashizume, Kenji Kawai
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Patent number: 7013638Abstract: In regenerating a filter there are performed a first additional fuel injection involving additional injection of fuel into a cylinder after a main fuel injection in an engine to raise the temperature of an oxidation catalyst and a second additional fuel injection involving fuel injection after the first additional fuel injection to supply the oxidation catalyst with the fuel, a second additional fuel injection quantity is set in accordance with an engine speed and an engine load and is changed in accordance with an outlet temperature of the oxidation catalyst.Type: GrantFiled: March 24, 2004Date of Patent: March 21, 2006Assignee: Mitsubishi Fuso Truck and Bus CorporationInventors: Satoshi Hiranuma, Yoshinaka Takeda, Toru Kawatani, Reiko Doumeki
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Patent number: 6935104Abstract: An engine control system comprises a NOx catalyst selectively reducing NOx from exhaust gases, a reducing agent supply providing the reducing agent to an exhaust system and positioned upstream of the NOx catalyst, NOx sensors detecting an amount of NOx in exhaust gases emitted by an internal combustion engine, a fuel injection system injecting fuel to the internal combustion engine in a main injection mode or a pilot-and-main injection mode, and a control unit activating the fuel injection system in the pilot-and-main injection mode when a NOx purifying efficiency determined on the basis of data of emitted NOx is equal to or below a preset purifying efficiency.Type: GrantFiled: July 29, 2003Date of Patent: August 30, 2005Assignee: Mitsubishi Fuso Truck and Bus CorporationInventors: Toru Kawatani, Naoki Onoda, Hiroshi Jyoutaki, Ritsuko Shinozaki, Yoshinori Takahashi, Yoshinaka Takeda, Kenji Sasaki, Kenji Kawai, Shinichi Saito, Masayuki Takahashi
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Patent number: 6918363Abstract: The valve drive apparatus of the invention comprises an exhaust valve drive mechanism capable of changing an open/close timing of an exhaust valve, and a control device which controls the exhaust valve drive apparatus so as to release the exhaust valve during an intake stroke, independently of an exhaust stroke, in an EGR mode. Preferably, the exhaust valve drive mechanism comprises a first exhaust cam which defines the exhaust valve releasing timing and the amount of valve lift in the exhaust stroke, and a second exhaust cam which defines the exhaust valve releasing timing and the amount of valve lift during the intake stroke. In an normal mode, the displacement of the first exhaust cam is transmitted to the exhaust valve, and in the EGR mode, the displacement of the second exhaust cam is transmitted to the exhaust valve, in addition to the displacement of the first exhaust cam.Type: GrantFiled: September 28, 2004Date of Patent: July 19, 2005Assignees: Mitsubishi Fuso Truck and Bus Corporation, Fusco Engineering CorporationInventors: Yasunori Daigo, Masahiro Maekawa, Toru Kawatani, Manabu Horiuchi, Satoshi Nakajima, Koichi Kawamoto
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Publication number: 20050066920Abstract: The valve drive apparatus of the invention comprises an exhaust valve drive mechanism capable of changing an open/close timing of an exhaust valve, and a control device which controls the exhaust valve drive apparatus so as to release the exhaust valve during an intake stroke, independently of an exhaust stroke, in an EGR mode. Preferably, the exhaust valve drive mechanism comprises a first exhaust cam which defines the exhaust valve releasing timing and the amount of valve lift in the exhaust stroke, and a second exhaust cam which defines the exhaust valve releasing timing and the amount of valve lift during the intake stroke. In an normal mode, the displacement of the first exhaust cam is transmitted to the exhaust valve, and in the EGR mode, the displacement of the second exhaust cam is transmitted to the exhaust valve, in addition to the displacement of the first exhaust cam.Type: ApplicationFiled: September 28, 2004Publication date: March 31, 2005Inventors: Yasunori Daigo, Masahiro Maekawa, Toru Kawatani, Manabu Horiuchi, Satoshi Nakajima, Koichi Kawamoto
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Publication number: 20040244362Abstract: The present invention comprises an oxygen mass flow rate detecting means for detecting or calculating a mass flow rate of oxygen fed to a filter and a regeneration end determining means for determining a regeneration end of the filter in accordance with information provided from the oxygen mass flow rate detecting means and upon arrival of an integrated value of the oxygen mass flow rate at a predetermined value during regeneration of the filter.Type: ApplicationFiled: March 24, 2004Publication date: December 9, 2004Inventors: Satoshi Hiranuma, Yoshinaka Takeda, Toru Kawatani, Reiko Doumeki
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Publication number: 20040244366Abstract: In regenerating a filter there are performed a first additional fuel injection involving additional injection of fuel into a cylinder after a main fuel injection in an engine to raise the temperature of an oxidation catalyst and a second additional fuel injection involving fuel injection after the first additional fuel injection to supply the oxidation catalyst with the fuel, a second additional fuel injection quantity is set in accordance with an engine speed and an engine load and is changed in accordance with an outlet temperature of the oxidation catalyst.Type: ApplicationFiled: March 24, 2004Publication date: December 9, 2004Inventors: Satoshi Hiranuma, Yoshinaka Takeda, Toru Kawatani, Reiko Doumeki
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Publication number: 20040194451Abstract: An engine control system comprises a NOx catalyst selectively reducing NOx from exhaust gases, a reducing agent supply providing the reducing agent to an exhaust system and positioned upstream of the NOx catalyst, NOx sensors detecting an amount of NOx in exhaust gases emitted by an internal combustion engine, a fuel injection system injecting fuel to the internal combustion engine in a main injection mode or a pilot-and-main injection mode, and a control unit activating the fuel injection system in the pilot-and-main injection mode when a NOx purifying efficiency determined on the basis of data of emitted NOx is equal to or below a preset purifying efficiency.Type: ApplicationFiled: July 29, 2003Publication date: October 7, 2004Inventors: Toru Kawatani, Naoki Onoda, Hiroshi Jyoutaki, Ritsuko Shinozaki, Yoshinori Takahashi, Yoshinaka Takeda, Kenji Sasaki, Kenji Kawai, Shininchi Saito, Masayuki Takahashi
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Patent number: 6755014Abstract: A NOx catalyst for selectively reducing NOx in exhaust gas by adsorbing ammonia is provided at an exhaust system of an engine, ammonia or urea water is supplied to the NOx catalyst by reducing agent supplying means, a consumption amount of ammonia adsorbed to the NOx catalyst is derived by consumption amount deriving means based on an exhaust amount of NOx exhausted from the engine detected or estimated by NOx exhaust amount deriving means and an actual NOx cleaning rate by the NOx catalyst derived by actual NOx cleaning rate deriving means, an actual adsorption amount of ammonia adsorbed to the NOx catalyst is derived in accordance with an addition amount of ammonia and the consumption amount of ammonia by adsorption amount deriving means and the reducing agent supplying means is controlled by controlling means in accordance with the actual adsorption amount.Type: GrantFiled: December 27, 2002Date of Patent: June 29, 2004Assignee: Mitsubishi Fuso Truck and Bus CorporationInventors: Kenji Kawai, Yoshinori Takahashi, Shinichi Saito, Toru Kawatani, Yoshinaka Takeda, Ristuko Shinozaki, Reiko Doumeki, Takeshi Hashizume, Satoshi Hiranuma
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Patent number: 6666019Abstract: An exhaust emission control system of an internal combustion engine capable of post injection is disclosed which provides control such that the injection timing in sub injection is set to a point earlier than the target injection timing when the sub injection is started, and the injection timing in the sub injection is then delayed to the target injection timing. This realizes the post injection under the optimum conditions and enables an efficient rise in the exhaust temperature while inhibiting deterioration of the drivability due to a rapid change in torque.Type: GrantFiled: March 27, 2002Date of Patent: December 23, 2003Assignee: Mitsubishi Fuso Truck and Bus CorporationInventors: Toru Kawatani, Kihoko Kaita, Shinichi Saito, Takeshi Hashizume, Junya Watanabe, Kenji Kawai, Satoshi Hiranuma, Yoshinaka Takeda
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Patent number: 6634170Abstract: An exhaust emission control system of an internal combustion engine is provided which controls the oxygen concentration of exhaust passing through the exhaust emission control device according to the flow rate of exhaust flowing through an exhaust passage when the exhaust emission control device is regenerated, so that the regeneration is completed within a short period of time while the filter is prevented from being damaged by melting during the regeneration. This improves the exhaust emission control performance and reliability of the filter.Type: GrantFiled: March 27, 2002Date of Patent: October 21, 2003Assignee: Mitsubishi Fuso Truck and Bus CorporationInventors: Satoshi Hiranuma, Kihoko Kaita, Shinichi Saito, Takeshi Hashizume, Junya Watanabe, Kenji Kawai, Toru Kawatani, Yoshinaka Takeda
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Publication number: 20030182935Abstract: An NOx catalyst 17 for selectively reducing NOx in exhaust gas by adsorbing ammonia is provided at an exhaust system of an engine 1, ammonia or urea water is supplied to the NOx catalyst by reducing agent supplying means 29, a consumption amount of ammonia adsorbed to the NOx catalyst is derived by consumption amount deriving means 43 based on an exhaust amount of NOx exhausted from the engine detected or estimated by NOx exhaust amount deriving means 41 and an actual NOx cleaning rate by the NOx catalyst derived by actual NOx cleaning rate deriving means 42, an actual adsorption amount of ammonia adsorbed to the NOx catalyst is derived in accordance with an addition amount of ammonia and the consumption amount of ammonia by adsorption amount deriving means 45 and the reducing agent supplying means is controlled by controlling means 46 in accordance with the actual adsorption amount.Type: ApplicationFiled: December 27, 2002Publication date: October 2, 2003Inventors: Kenji Kawai, Yoshinori Takahashi, Shinichi Saito, Toru Kawatani, Yoshinaka Takeda, Ritsuko Shinozaki, Reiko Doumeki, Takeshi Hashizume, Satoshi Hiranuma
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Publication number: 20020157386Abstract: An exhaust emission control system of an internal combustion engine is provided which controls the oxygen concentration of exhaust passing through the exhaust emission control device according to the flow rate of exhaust flowing through an exhaust passage when the exhaust emission control device is regenerated, so that the regeneration is completed within a short period of time while the filter is prevented from being damaged by melting during the regeneration. This improves the exhaust emission control performance and reliability of the filter.Type: ApplicationFiled: March 27, 2002Publication date: October 31, 2002Inventors: Satoshi Hiranuma, Kihoko Kaita, Shinichi Saito, Takeshi Hashizume, Junya Watanabe, Kenji Kawai, Toru Kawatani, Yoshinaka Takeda
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Publication number: 20020152744Abstract: An exhaust emission control system of an internal combustion engine capable of post injection is disclosed which provides control such that the injection timing in sub injection is set to a point earlier than the target injection timing when the sub injection is started, and the injection timing in the sub injection is then delayed to the target injection timing. This realizes the post injection under the optimum conditions and enables an efficient rise in the exhaust temperature while inhibiting deterioration of the drivability due to a rapid change in torque.Type: ApplicationFiled: March 27, 2002Publication date: October 24, 2002Inventors: Toru Kawatani, Kihoko Kaita, Shinichi Saito, Takeshi Hashizume, Junya Watanabe, Kenji Kawai, Satoshi Hiranuma, Yoshinaka Takeda