Patents by Inventor Shinji Fujihira
Shinji Fujihira 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: 20210379979Abstract: A vehicle driving apparatus is provided that includes a drive motor, an internal combustion engine, and an electrical generator and can inhibit a weight balance and motion performance of a vehicle from being deteriorated and lowered. A vehicle driving apparatus driving a vehicle by motive power of a motor, the vehicle driving apparatus including a drive motor that is driven by electric power, an internal combustion engine that produces motive power by fuel, and an electrical generator that is driven by the internal combustion engine, the vehicle driving apparatus being characterized in that the drive motor, the internal combustion engine, and the electrical generator are arranged in a vehicle width direction of the vehicle in order of the drive motor, the internal combustion engine, and the electrical generator.Type: ApplicationFiled: August 24, 2021Publication date: December 9, 2021Applicant: Mazda Motor CorporationInventors: Isao TODA, Seiyo HIRANO, Kei YONEMORI, Satoshi MARUYAMA, Shinji FUJIHIRA, Wataru KUWAHARA, Tomoya KAKITE, Yoshiaki NOGUCHI, Ryuichiro AMANO, Mitsuhiro HIROTA
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Patent number: 11168650Abstract: An engine EGR system is provided, which includes an engine body, an intake passage, an exhaust passage and an EGR passage configured to recirculate exhaust gas as EGR gas to the intake passage. The EGR passage includes an EGR cooler and an EGR internal passage constituting the EGR passage upstream of the EGR cooler, and including a passage passing through a cylinder head. The EGR internal passage has a bent pipe part including a first bent portion at which an upstream portion of the EGR internal passage is bent away from a gas inflow port of the EGR cooler, a second bent portion located downstream of the first bent portion and bending the EGR internal passage toward the gas inflow port, and an intermediate portion connecting the first and the second bent portions by being disposed therebetween. The water-cooling passage is disposed around the bent pipe part.Type: GrantFiled: February 16, 2021Date of Patent: November 9, 2021Assignee: Mazda Motor CorporationInventors: Shinji Fujihira, Hiroshi Kinoshita, Takashi Kariya, Takayuki Tominaga, Tatsuya Takahata
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Publication number: 20210310447Abstract: An engine EGR system is provided, which includes an engine body, an intake passage, an exhaust passage and an EGR passage configured to recirculate exhaust gas as EGR gas to the intake passage. The EGR passage includes an EGR cooler and an EGR internal passage constituting the EGR passage upstream of the EGR cooler, and including a passage passing through a cylinder head. The EGR internal passage has a bent pipe part including a first bent portion at which an upstream portion of the EGR internal passage is bent away from a gas inflow port of the EGR cooler, a second bent portion located downstream of the first bent portion and bending the EGR internal passage toward the gas inflow port, and an intermediate portion connecting the first and the second bent portions by being disposed therebetween. The water-cooling passage is disposed around the bent pipe part.Type: ApplicationFiled: February 16, 2021Publication date: October 7, 2021Inventors: Shinji Fujihira, Hiroshi Kinoshita, Takashi Kariya, Takayuki Tominaga, Tatsuya Takahata
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Patent number: 11111886Abstract: An engine EGR system is provided. An EGR passage includes an EGR cooler, an EGR internal passage passing through a cylinder head on an upstream side of the EGR cooler, and a relay passage extending outside the cylinder head and connecting the EGR internal passage to the EGR cooler. The EGR cooler formed in a columnar shape is arranged above an intake manifold so as to locate a gas inflow port on a first end surface side and a gas outflow port on a second end surface side, and the relay passage communicates with the EGR internal passage on an external side of the engine compared to a head EGR gas exit. The EGR cooler inclines downward from the gas outflow port toward the gas inflow port, and the relay passage is connected to the gas inflow port while being bent downward toward the upstream side.Type: GrantFiled: February 17, 2021Date of Patent: September 7, 2021Assignee: Mazda Motor CorporationInventors: Shinji Fujihira, Hiroshi Kinoshita, Takashi Kariya, Takayuki Tominaga, Ken Yoshida
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Publication number: 20200355114Abstract: An engine includes an intake electric S-VT configured to change a rotational phase of an intake camshaft, an exhaust electric S-VT configured to change a rotational phase of an exhaust camshaft, a fuel pump, and a supercharger driven by the engine. Both the fuel pump and the supercharger are driven by power transmitted from a crankshaft. The power is transmitted to the fuel pump via a first drive mechanism, and the power is transmitted to the supercharger via a second drive mechanism whose system is different from a system of the first drive mechanism.Type: ApplicationFiled: August 25, 2017Publication date: November 12, 2020Inventors: Shinji Fujihira, Tsuyoshi Goto, Ryotaro Nishida
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Publication number: 20200191100Abstract: An engine (1) of a vehicle powertrain unit (P) includes: an electric exhaust S-VT (27) that is mounted on one end of an exhaust camshaft (26) and changes a rotational phase of the exhaust camshaft; and an EGR device (60) that is provided outside an engine body (10) and connects an intake passage (30) and an exhaust passage (50) together. The EGR device is located closer to a cylinder block (13) than the electric exhaust S-VT in a direction from a cylinder head (14) to the cylinder block, and is arranged so that at least a part of the EGR device and the electric exhaust S-VT overlap with each other when viewed in the direction from the cylinder head to the cylinder block.Type: ApplicationFiled: August 1, 2018Publication date: June 18, 2020Applicant: MAZDA MOTOR CORPORATIONInventors: Tomohiro KOGUCHI, Shinji FUJIHIRA, Ryotaro NISHIDA, Takeshi NAKAHIRA
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Patent number: 10626805Abstract: The present disclosure improves serviceability of an automotive powertrain unit without deteriorating NVH characteristics. A powertrain includes an engine having a cylinder head; and a transmission coupled to the engine. The engine includes an EGR connected between an intake passage and an exhaust passage. The transmission is provided below the cylinder head in a vehicle height direction. The EGR is provided along a side of the cylinder head toward the transmission, and supported by the transmission.Type: GrantFiled: August 14, 2018Date of Patent: April 21, 2020Assignee: MAZDA MOTOR CORPORATIONInventors: Tomohiro Koguchi, Shinji Fujihira, Ryotaro Nishida, Takeshi Nakahira
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Publication number: 20190063340Abstract: The present disclosure improves serviceability of an automotive powertrain unit without deteriorating NVH characteristics. A powertrain includes an engine having a cylinder head; and a transmission coupled to the engine. The engine includes an EGR connected between an intake passage and an exhaust passage. The transmission is provided below the cylinder head in a vehicle height direction. The EGR is provided along a side of the cylinder head toward the transmission, and supported by the transmission.Type: ApplicationFiled: August 14, 2018Publication date: February 28, 2019Applicant: MAZDA MOTOR CORPORATIONInventors: Tomohiro KOGUCHI, Shinji FUJIHIRA, Ryotaro NISHIDA, Takeshi NAKAHIRA
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Patent number: 6745739Abstract: An intake system of an engine comprises an intake module, in which a throttle body joint portion and an upstream portion of an intake manifold are formed in a single structure, and a downstream portion of the intake manifold extending from an engine body. A downstream end of the intake module is joined to the downstream portion of the intake manifold and an end portion of the intake module opposite to its portion joined to the downstream portion of the intake manifold is connected to an uppermost part of an oil filler pipe which is connected to the engine body. In this construction, the intake module is supported by the engine body via the oil filler pipe.Type: GrantFiled: October 16, 2002Date of Patent: June 8, 2004Assignee: Mazda Motor CorporationInventors: Shinji Fujihira, Masanao Yamada, Takeshi Yokoo, Shunki Okazaki, Hiroshi Kinoshita
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Publication number: 20030070646Abstract: An intake system of an engine comprises an intake module, in which a throttle body joint portion and an upstream portion of an intake manifold are formed in a single structure, and a downstream portion of the intake manifold extending from an engine body. A downstream end of the intake module is joined to the downstream portion of the intake manifold and an end portion of the intake module opposite to its portion joined to the downstream portion of the intake manifold is connected to an uppermost part of an oil filler pipe which is connected to the engine body. In this construction, the intake module is supported by the engine body via the oil filler pipe.Type: ApplicationFiled: October 16, 2002Publication date: April 17, 2003Applicant: Mazda Motor CorporationInventors: Shinji Fujihira, Masanao Yamada, Takeshi Yokoo, Shunki Okazaki, Hiroshi Kinoshita
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Patent number: 6382165Abstract: A balancer case (21) is coupled to the lower portion of a cylinder block (10) through turrets (12) made of a material having almost the same coefficient of linear expansion as that of a crankshaft (11) and balancer shaft (22).Type: GrantFiled: August 3, 2000Date of Patent: May 7, 2002Assignee: Mazda Motor CorporationInventors: Ichirou Hirose, Kazuo Isayama, Shinji Fujihira, Masaaki Sato
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Patent number: 5072698Abstract: An intake apparatus for an engine is provided with an intake duct, arranged in an engine room, for supplying intake air to the engine. An auxiliary duct is connected to the intake duct and designed so that the intake air can be further introduced thereto. A valve unit is arranged in the auxiliary duct, for causing the auxiliary duct to communicate with the intake duct in a specific driving state requiring a high engine output.Type: GrantFiled: May 29, 1990Date of Patent: December 17, 1991Assignee: Mazda Motor CorporationInventors: Shinji Fujihira, Yuko Yanagidani, Isao Tohda, Shinji Kanbara