Patents by Inventor Hiroshi Sumimoto
Hiroshi Sumimoto 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: 11181085Abstract: Present application discloses fuel supply device which includes: fuel injection valves respectively arranged on center axes of cylinders, fuel injection valves being configured to inject fuel into the cylinders; fuel distribution portion configured to distribute fuel to fuel injection valves; and fuel supply tubes configured to form supply paths for fuel from fuel distribution portion to fuel injection valves. Fuel distribution portion includes connection portions arranged in arrangement direction so as to be connected to fuel supply tubes. Connection portions include pair of reference connection portions situated at positions distant from each other in arrangement direction by distance between respective bore center axes of cylinders. Fuel supply tubes include pair of fuel supply tubes respectively connected to pair of reference connection portions and two fuel injection valves on two cylinders arranged adjacently to each other. Pair of fuel supply tubes have a common shape.Type: GrantFiled: December 11, 2018Date of Patent: November 23, 2021Assignee: Mazda Motor CorporationInventors: Hiroshi Sumimoto, Tomohiro Sunada
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Publication number: 20210054814Abstract: Present application discloses fuel supply device which includes: fuel injection valves respectively arranged on center axes of cylinders, fuel injection valves being configured to inject fuel into the cylinders; fuel distribution portion configured to distribute fuel to fuel injection valves; and fuel supply tubes configured to form supply paths for fuel from fuel distribution portion to fuel injection valves. Fuel distribution portion includes connection portions arranged in arrangement direction so as to be connected to fuel supply tubes. Connection portions include pair of reference connection portions situated at positions distant from each other in arrangement direction by distance between respective bore center axes of cylinders. Fuel supply tubes include pair of fuel supply tubes respectively connected to pair of reference connection portions and two fuel injection valves on two cylinders arranged adjacently to each other. Pair of fuel supply tubes have a common shape.Type: ApplicationFiled: December 11, 2018Publication date: February 25, 2021Inventors: Hiroshi SUMIMOTO, Tomohiro SUNADA
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Patent number: 10711751Abstract: A fuel supply system for an engine having a plurality of cylinders is provided, which includes a plurality of fuel injection valves configured to inject fuel into the cylinders in a given order, a first distribution pipe configured to distributingly supply fuel to some of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a second distribution pipe configured to distributingly supply fuel to a remainder of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a fuel pump part configured to discharge fuel, a first feed pipe connecting a first discharge part of the fuel pump part with the first distribution pipe, and a second feed pipe connecting a second discharge part of the fuel pump part and the second distribution pipe.Type: GrantFiled: December 13, 2018Date of Patent: July 14, 2020Assignee: Mazda Motor CorporationInventors: Kazunori Hirabayashi, Hirohisa Shirai, Hiroshi Komatsu, Shinichiro Tagami, Hiroshi Sumimoto
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Patent number: 10436098Abstract: An engine equipped with a turbo supercharger has an exhaust manifold coupled to an engine body, a turbo supercharger including a turbine housing demarcating a turbine chamber and a supply path of exhaust air, and a turbine insulator covering the same, and a manifold insulator covering at least the upper surface of the exhaust manifold and the side surface of the exhaust manifold on the turbo supercharger side. The exhaust manifold has a flange as a connection section with respect to the turbo supercharger. The manifold insulator has a cut-away section exposing a joining surface of the flange, and an opening caused by having the interval between the cut-away edge of the cut-away section and the outer peripheral edge of the flange be relatively wider in a predetermined position than in other positions.Type: GrantFiled: February 28, 2017Date of Patent: October 8, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Yasushi Niwa, Hiroshi Sumimoto, Kazuya Niida
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Publication number: 20190242348Abstract: A fuel supply system for an engine having a plurality of cylinders is provided, which includes a plurality of fuel injection valves configured to inject fuel into the cylinders in a given order, a first distribution pipe configured to distributingly supply fuel to some of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a second distribution pipe configured to distributingly supply fuel to a remainder of the plurality of fuel injection valves of which the fuel injection orders are not successive in the given order, a fuel pump part configured to discharge fuel, a first feed pipe connecting a first discharge part of the fuel pump part with the first distribution pipe, and a second feed pipe connecting a second discharge part of the fuel pump part and the second distribution pipe.Type: ApplicationFiled: December 13, 2018Publication date: August 8, 2019Inventors: Kazunori Hirabayashi, Hirohisa Shirai, Hiroshi Komatsu, Shinichiro Tagami, Hiroshi Sumimoto
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Patent number: 10316738Abstract: A turbocharger engine includes an engine body and a turbocharger. The turbocharger includes a large turbo unit having a large turbine chamber, a large compressor chamber, and a large turbine shaft extending between the two chambers; and a small turbo unit having a small turbine chamber, a small compressor chamber, and a small turbine shaft extending between the two chambers. The large compressor chamber is disposed upstream of the small compressor chamber in an intake passage. A large turbo axis and a small turbo axis are disposed to extend generally in the same direction as an engine output axis. The large turbo unit is disposed such that the large turbo axis is non-parallel to the engine output axis, and a large-compressor-chamber-side portion of the large turbo axis is closer to the engine output axis than a large-turbine-chamber-side portion thereof in a plan view in an axis direction of the cylinder.Type: GrantFiled: May 31, 2017Date of Patent: June 11, 2019Assignee: MAZDA MOTOR CORPORATIONInventors: Yasushi Niwa, Hiroshi Sumimoto, Mitsuhiro Nakajima
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Publication number: 20190040787Abstract: An engine equipped with a turbo supercharger has an exhaust manifold coupled to an engine body, a turbo supercharger including a turbine housing demarcating a turbine chamber and a supply path of exhaust air, and a turbine insulator covering the same, and a manifold insulator covering at least the upper surface of the exhaust manifold and the side surface of the exhaust manifold on the turbo supercharger side. The exhaust manifold has a flange as a connection section with respect to the turbo supercharger. The manifold insulator has a cut-away section exposing a joining surface of the flange, and an opening caused by having the interval between the cut-away edge of the cut-away section and the outer peripheral edge of the flange be relatively wider in a predetermined position than in other positions.Type: ApplicationFiled: February 28, 2017Publication date: February 7, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi NIWA, Hiroshi SUMIMOTO, Kazuya NIIDA
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Publication number: 20170342895Abstract: A turbocharger engine includes an engine body and a turbocharger. The turbocharger includes a large turbo unit having a large turbine chamber, a large compressor chamber, and a large turbine shaft extending between the two chambers; and a small turbo unit having a small turbine chamber, a small compressor chamber, and a small turbine shaft extending between the two chambers. The large compressor chamber is disposed upstream of the small compressor chamber in an intake passage. A large turbo axis and a small turbo axis are disposed to extend generally in the same direction as an engine output axis. The large turbo unit is disposed such that the large turbo axis is non parallel to the engine output axis, and a large-compressor-chamber-side portion of the large turbo axis is closer to the engine output axis than a large-turbine-chamber-side portion thereof in a plan view in an axis direction of the cylinder.Type: ApplicationFiled: May 31, 2017Publication date: November 30, 2017Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi NIWA, Hiroshi SUMIMOTO, Mitsuhiro NAKAJIMA
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Publication number: 20160186704Abstract: Disclosed is an exhaust gas recirculation system provided in an engine to recirculate, to an intake manifold, a part of exhaust gas discharged from an engine body, as EGR gas. The exhaust gas recirculation system comprises: an in-head gas passage formed in a cylinder head to allow the EGR gas to pass through a position adjacent to a first coolant jacket formed in the cylinder head to allow coolant to flow therethrough an EGR cooler configured to cool the EGR gas after passing through the cylinder head via the in-head gas passage and before being introduced into the intake manifold; and a relay pipe configured to guide the EGR gas just after passing through the cylinder head, to the EGR cooler. The relay pipe is provided with a second coolant jacket for allowing coolant to flow therethrough so as to cool the EGR gas being flowing inside the relay pipe.Type: ApplicationFiled: December 4, 2015Publication date: June 30, 2016Applicant: MAZDA MOTOR CORPORATIONInventors: Mitsuyuki MUROTANI, Yasushi NAKAHARA, Hiroshi SUMIMOTO, Junji UMEMURA
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Patent number: 6604506Abstract: To improve the efficiency of assembling multiple on-off valves into a manifold body and reduce resistance to rotation of a shaft after assembly, frame members (3) are fitted in downstream end portions of individual intake passage sections (12) of a manifold body (2), on-off valves (4) are placed inside the individual frame members (3) and a shaft (5) is passed through the on-off valves (4) in such a way that the frame members (3) constitute parts of inside walls of intake passages where the on-off valves (4) are located, the frame members (3) rotatably supporting the on-off valves (4) and the shaft (5). A cutout (23) is formed in a surrounding wall of each frame member (3), thereby making each frame member (3) expandable and compressible by elastic deformation.Type: GrantFiled: September 27, 2001Date of Patent: August 12, 2003Assignee: Mazda Motor CorporationInventors: Takayuki Tanaka, Fusatoshi Tanaka, Kenya Ishii, Hiroshi Sumimoto, Yoshihiro Nakagawa
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Publication number: 20020073961Abstract: To improve the efficiency of assembling multiple on-off valves into a manifold body and reduce resistance to rotation of a shaft after assembly, frame members (3) are fitted in downstream end portions of individual intake passage sections (12) of a manifold body (2), on-off valves (4) are placed inside the individual frame members (3) and a shaft (5) is passed through the on-off valves (4) in such a way that the frame members (3) constitute parts of inside walls of intake passages where the on-off valves (4) are located, the frame members (3) rotatably supporting the on-off valves (4) and the shaft (5). A cutout (23) is formed in a surrounding wall of each frame member (3), thereby making each frame member (3) expandable and compressible by elastic deformation.Type: ApplicationFiled: September 27, 2001Publication date: June 20, 2002Inventors: Takayuki Tanaka, Fusatoshi Tanaka, Kenya Ishii, Hiroshi Sumimoto, Yoshihiro Nakagawa
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Patent number: 5056472Abstract: A four cycle, 12-cylinder engine includes four cylinder groups each having three cylinders located adjacent to each other. The cylinders in each cylinder group have intake strokes which are apart one from another by 240.degree. in terms of angle of rotation of the engine crankshaft. The cylinders in each cylinder group are connected through respective branch intake passages with a common intake passage. Means is provided for separating the common intake passage of one cylinder group from the common intake passage of another cylinder group.Type: GrantFiled: June 4, 1990Date of Patent: October 15, 1991Assignee: Mazda Motor CorporationInventors: Toshikazu Kurokawa, Hiroshi Sumimoto, Takashiga Tokushima, Tadao Suemori