Patents by Inventor Toshiaki Kamo
Toshiaki Kamo 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: 10988019Abstract: An exhaust structure of a vehicle is provided that can ensure an arrangement space for a mounted component below a floor panel and prevent thermal damage to the mounted component by reducing sizes of an engine and an exhaust silencer. An exhaust structure of a vehicle includes: an engine disposed in an engine bay formed in a front part of a vehicle; a silencer that reduces noise of exhaust gas from the engine and discharges the exhaust gas outside; an exhaust pipe that couples the engine and the silencer; and a battery unit disposed behind the engine and below a floor panel, the silencer being disposed between the engine and the battery unit.Type: GrantFiled: July 3, 2019Date of Patent: April 27, 2021Assignee: Mazda Motor CorporationInventors: Toshiaki Kamo, Hirokazu Hasegawa, Takahiro Ito, Shohei Morimoto
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Patent number: 10835865Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a tubular connecting member. The connecting member includes: a first opening; a second opening; and a bend connecting. A downstream end surface of the first catalyst is connected to the first opening, and an upstream end surface of the second catalyst is connected to the second opening. The downstream end surface and the upstream end surface form a dihedral angle within a range from 60 to 120 degrees. A part of the upstream end surface of the second catalyst includes an overlap that is close and opposed to a part of a surface of the first catalyst. The bend of the connecting member includes: a first wall; a second wall; and a connector. The first wall has a curve. The curvature radius of the first wall is greater than the predetermined curvature radius.Type: GrantFiled: December 1, 2017Date of Patent: November 17, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Taku Kuramashi, Keishi Kitabatake, Tamotsu Takamure, Toshiaki Kamo
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Patent number: 10662853Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a connecting member shaped into a tube and forming a part of the exhaust path, and connecting the first catalyst to the second catalyst. A downstream end surface of the first catalyst and an upstream end surface of the second catalyst form a dihedral angle within a range from 60 degrees to 120 degrees. A part of the upstream end surface of the second catalyst is close to and faces a part of a side surface of the first catalyst. On a cross-section including a central axis of the first catalyst and being parallel to a central axis of a second catalyst, a length of the part of the side surface of the first catalyst is longer than or equal to 10% and shorter than 50% of an entire length of the first catalyst.Type: GrantFiled: December 1, 2017Date of Patent: May 26, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Taku Kuramashi, Keishi Kitabatake, Tamotsu Takamure, Toshiaki Kamo
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Patent number: 10626781Abstract: A downstream-side heat insulating material which is provided at a side face of a GPF which is positioned on a downstream side, in an exhaust-gas flowing direction, of plural in-line arranged catalysts has a first opening portion and a second opening portion which are provided for attaching supporting members.Type: GrantFiled: December 29, 2017Date of Patent: April 21, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Taku Kuramashi, Keishi Kitabatake, Tamotsu Takamure, Toshiaki Kamo
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Patent number: 10557443Abstract: An exhaust-gas discharge port to discharge a main flow of exhaust gas passing through an exhaust-gas purifying device is provided at a position which is offset, on one side, from a center axis of the purifying-device body, and an EGR-gas takeout port is provided at a position which is offset, on an opposite side to the exhaust-gas discharge port, from the center axis of the purifying-device body.Type: GrantFiled: February 26, 2018Date of Patent: February 11, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Taku Kuramashi, Keishi Kitabatake, Tamotsu Takamure, Toshiaki Kamo
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Patent number: 10550750Abstract: A downstream-side exhaust-gas takeout portion of a pressure-difference detector is provided between an exhaust-gas discharge port of a downstream-side cover and an EGR-gas takeout port so that a stable exhaust-gas pressure can be taken out (detected).Type: GrantFiled: February 26, 2018Date of Patent: February 4, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Taku Kuramashi, Keishi Kitabatake, Tamotsu Takamure, Toshiaki Kamo
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Publication number: 20200032685Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; a connection member and an exhaust gas outlet pipe. The first catalyst has a downstream end face and the second catalyst has an upstream end face. The downstream end face and the upstream end face form a predetermined dihedral angle. The upstream end face of the second catalyst and a side surface of the first catalyst closely face each other to form an overlap. A center axis of the exhaust gas outlet pipe is offset further toward the first catalyst than a center axis of the second catalyst is.Type: ApplicationFiled: December 1, 2017Publication date: January 30, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Publication number: 20200031219Abstract: An exhaust structure of a vehicle is provided that can ensure an arrangement space for a mounted component below a floor panel and prevent thermal damage to the mounted component by reducing sizes of an engine and an exhaust silencer. An exhaust structure of a vehicle includes: an engine disposed in an engine bay formed in a front part of a vehicle; a silencer that reduces noise of exhaust gas from the engine and discharges the exhaust gas outside; an exhaust pipe that couples the engine and the silencer; and a battery unit disposed behind the engine and below a floor panel, the silencer being disposed between the engine and the battery unit.Type: ApplicationFiled: July 3, 2019Publication date: January 30, 2020Inventors: Toshiaki Kamo, Hirokazu Hasegawa, Takahiro Ito, Shohei Morimoto
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Publication number: 20190366268Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a tubular connecting member. The connecting member includes: a first opening; a second opening; and a bend connecting. A downstream end surface of the first catalyst is connected to the first opening, and an upstream end surface of the second catalyst is connected to the second opening. The downstream end surface and the upstream end surface form a dihedral angle within a range from 60 to 120 degrees. A part of the upstream end surface of the second catalyst includes an overlap that is close and opposed to a part of a surface of the first catalyst. The bend of the connecting member includes: a first wall; a second wall; and a connector. The first wall has a curve. The curvature radius of the first wall is greater than the predetermined curvature radius.Type: ApplicationFiled: December 1, 2017Publication date: December 5, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Patent number: 10480378Abstract: A exhaust gas purifier includes a case having a flat transverse section including a pair of facing short sides and a pair of facing long sides, and configured to house a catalytic converter, and an inlet cone including a conical portion, and configured to connect an outlet of the turbine to an inlet of the case. The conical portion includes an inclined wall inclined from a mainstream of the exhaust gas to increase the transverse section of a path of the exhaust gas. A recess recessed inward is formed in a portion corresponding to each of the long sides of the inclined wall of the conical portion.Type: GrantFiled: July 18, 2017Date of Patent: November 19, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Toshiaki Kamo, Hirokazu Hasegawa, Haruna Yanagida, Miki Noguchi
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Publication number: 20190316510Abstract: An engine exhaust device includes: a first catalyst; a second catalyst; and a connecting member shaped into a tube and forming a part of the exhaust path, and connecting the first catalyst to the second catalyst. A downstream end surface of the first catalyst and an upstream end surface of the second catalyst form a dihedral angle within a range from 60 degrees to 120 degrees. A part of the upstream end surface of the second catalyst is close to and faces a part of a side surface of the first catalyst. On a cross-section including a central axis of the first catalyst and being parallel to a central axis of a second catalyst, a length of the part of the side surface of the first catalyst is longer than or equal to 10% and shorter than 50% of an entire length of the first catalyst.Type: ApplicationFiled: December 1, 2017Publication date: October 17, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Patent number: 10385756Abstract: An arc-shaped recess part is provided at a collective pipe of an exhaust manifold, whereby a flow of exhaust gas from one end side of cylinders is uniformized and then introduced into an exhaust-gas purifying device.Type: GrantFiled: February 26, 2018Date of Patent: August 20, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Taku Kuramashi, Keishi Kitabatake, Tamotsu Takamure, Toshiaki Kamo
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Patent number: 10363972Abstract: A vehicle reinforcing member includes first and second pistons movable in an axial direction in a cylinder. An inside of the cylinder is sectioned into a gas chamber and a main liquid chamber by the first piston, and the main liquid chamber is sectioned into a first sub-liquid chamber and a second sub-liquid chamber by the second piston. Gas is sealed in the gas chamber, and liquid is sealed in the first and second sub-liquid chambers. A piston rod is coupled to the second piston. The cylinder and the piston rod are respectively coupled to two locations of a vehicle body. A communication path connects the first sub-liquid chamber to the second sub-liquid chamber. A moving amount of the liquid in the communication path is adjusted by an adjuster such that a moving load through the second piston is adjusted.Type: GrantFiled: October 25, 2017Date of Patent: July 30, 2019Assignee: YAMAHA HATSUDOKI KABUSHIKI KAISHAInventors: Yutaka Yamazaki, Toshiaki Kamo, Toyoji Harada
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Publication number: 20180258822Abstract: A downstream-side exhaust-gas takeout portion of a pressure-difference detector is provided between an exhaust-gas discharge port of a downstream-side cover and an EGR-gas takeout port so that a stable exhaust-gas pressure can be taken out (detected).Type: ApplicationFiled: February 26, 2018Publication date: September 13, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Publication number: 20180258827Abstract: A downstream-side heat insulating material which is provided at a side face of a GPF which is positioned on a downstream side, in an exhaust-gas flowing direction, of plural in-line arranged catalysts has a first opening portion and a second opening portion which are provided for attaching supporting members.Type: ApplicationFiled: December 29, 2017Publication date: September 13, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Publication number: 20180258886Abstract: An exhaust-gas discharge port to discharge a main flow of exhaust gas passing through an exhaust-gas purifying device is provided at a position which is offset, on one side, from a center axis of the purifying-device body, and an EGR-gas takeout port is provided at a position which is offset, on an opposite side to the exhaust-gas discharge port, from the center axis of the purifying-device body.Type: ApplicationFiled: February 26, 2018Publication date: September 13, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Publication number: 20180258826Abstract: An arc-shaped recess part is provided at a collective pipe of an exhaust manifold, whereby a flow of exhaust gas from one end side of cylinders is uniformized and then introduced into an exhaust-gas purifying device.Type: ApplicationFiled: February 26, 2018Publication date: September 13, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Taku KURAMASHI, Keishi KITABATAKE, Tamotsu TAKAMURE, Toshiaki KAMO
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Publication number: 20180134321Abstract: A vehicle reinforcing member includes first and second pistons movable in an axial direction in a cylinder. An inside of the cylinder is sectioned into a gas chamber and a main liquid chamber by the first piston, and the main liquid chamber is sectioned into a first sub-liquid chamber and a second sub-liquid chamber by the second piston. Gas is sealed in the gas chamber, and liquid is sealed in the first and second sub-liquid chambers. A piston rod is coupled to the second piston. The cylinder and the piston rod are respectively coupled to two locations of a vehicle body. A communication path connects the first sub-liquid chamber to the second sub-liquid chamber. A moving amount of the liquid in the communication path is adjusted by an adjuster such that a moving load through the second piston is adjusted.Type: ApplicationFiled: October 25, 2017Publication date: May 17, 2018Inventors: Yutaka YAMAZAKI, Toshiaki KAMO, Toyoji HARADA
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Publication number: 20180030875Abstract: A exhaust gas purifier includes a case having a flat transverse section including a pair of facing short sides and a pair of facing long sides, and configured to house a catalytic converter, and an inlet cone including a conical portion, and configured to connect an outlet of the turbine to an inlet of the case. The conical portion includes an inclined wall inclined from a mainstream of the exhaust gas to increase the transverse section of a path of the exhaust gas. A recess recessed inward is formed in a portion corresponding to each of the long sides of the inclined wall of the conical portion.Type: ApplicationFiled: July 18, 2017Publication date: February 1, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Toshiaki KAMO, Hirokazu HASEGAWA, Haruna YANAGIDA, Miki NOGUCHI
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Patent number: 8549837Abstract: An exhaust upstream section (48) of an exhaust apparatus (E) comprises a plurality of branch pipe portions (32), a plurality of intermediate collector pipe portions (33), a final collector pipe portion (34), and an exhaust gas-purifying unit (40). The exhaust gas-purifying unit (40) is disposed on a vehicle-rear side of an engine (1) to allow a gas passage thereinside to extend approximately in vehicle-widthwise direction, in top plan view. Each of the plurality of intermediate collector pipe portions (33) curves to allow an exhaust downstream region of the intermediate collector pipe portion (33) to be oriented toward one side or the other side of the vehicle-widthwise direction, in top plan view, and the final collector pipe portion (34) curves to allow an exhaust downstream region of the final collector pipe portion (34) to be oriented toward a vehicle-front side, in top plan view.Type: GrantFiled: December 1, 2010Date of Patent: October 8, 2013Assignee: Mazda Motor CorporationInventors: Kenji Ushijima, Hirokazu Hasegawa, Yasushi Nakatani, Keishi Kitabatake, Yasushi Kusunoki, Toshiaki Kamo, Yoshitaka Nakamura, Daisuke Watanabe, Hiroki Shimoji, Masami Negami