Patents by Inventor Mitsuhiro Nakajima
Mitsuhiro Nakajima 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: 10415458Abstract: A vehicle with a turbocharged engine, including an engine body, an intake passage, an exhaust passage, a turbocharger, and a radiator. The radiator is provided with a cooling unit for cooling an engine coolant, and an upper tank into which the coolant is introduced after cooling the engine body. The turbocharger is provided with a turbine provided to the exhaust passage, a compressor provided to the intake passage, a coupling shaft coupling the turbine to the compressor, and bearings supporting the coupling shaft. The turbine is provided with an impeller for being rotated by introduced exhaust gas, and a turbine casing. The turbocharger is oil-cooled, and cooled by a lubricant. The turbine casing is formed from a sheet metal. The coupling shaft extends horizontally, and a height of an axial center of the shaft is above a height of an upper end of the upper tank of the radiator.Type: GrantFiled: April 17, 2017Date of Patent: September 17, 2019Assignee: Mazda Motor CorporationInventors: Yasushi Niwa, Mitsuhiro Nakajima
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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: 20180283266Abstract: An engine with a turbo supercharger has a first turbo and a second turbo. A first upstream section that is a scroll starting point of a first scroll passage of the first turbo and a second upstream section that is the scroll starting point of a second scroll passage of the second turbo are disposed, respectively, on a side that is farther than a first turbine shaft and a side that is farther than a second turbine shaft with respect to an engine body. The first and second scroll passages are passages scrolled so that downstream sides of the first and second upstream sections face a side closer to the engine body than the respective turbine shafts are, and scroll in opposite directions to each other. Consequently, a first turbine and a second turbine rotate in opposite directions to each other.Type: ApplicationFiled: March 21, 2017Publication date: October 4, 2018Applicant: MAZDA MOTOR CORPORATIONInventors: Yasushi NIWA, Mitsuhiro NAKAJIMA
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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: 20170314457Abstract: A vehicle with a turbocharged engine, including an engine body, an intake passage, an exhaust passage, a turbocharger, and a radiator. The radiator is provided with a cooling unit for cooling an engine coolant, and an upper tank into which the coolant is introduced after cooling the engine body. The turbocharger is provided with a turbine provided to the exhaust passage, a compressor provided to the intake passage, a coupling shaft coupling the turbine to the compressor, and bearings supporting the coupling shaft. The turbine is provided with an impeller for being rotated by introduced exhaust gas, and a turbine casing. The turbocharger is oil-cooled, and cooled by a lubricant. The turbine casing is formed from a sheet metal. The coupling shaft extends horizontally, and a height of an axial center of the shaft is above a height of an upper end of the upper tank of the radiator.Type: ApplicationFiled: April 17, 2017Publication date: November 2, 2017Inventors: Yasushi Niwa, Mitsuhiro Nakajima
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Patent number: 7528533Abstract: A vibratory gyroscope including a vibrator (10) integrally having a plate-like body portion (11) spreading along a reference plane, three drive arms (12, 13, 14) extending in a first direction from the body portion along the reference plane, and two detection arms (15, 16) extending in a second direction opposite to the first direction from the body portion along the reference plane. The three drive arms are composed of two exciting drive arms (12, 13) that are excited in mutually opposite phases in the reference plane and a non-exciting drive arm (14) located between the two exciting drive arms. Each of the three drive arms has an arm width in a width direction along the reference plane and perpendicular to the first direction. Each of the two detection arms has an arm width greater than that of the drive arm in the width direction, thereby suppressing generation of vibrations along the reference plane.Type: GrantFiled: January 11, 2006Date of Patent: May 5, 2009Assignee: Japan Aviation Electronics Industry, LimitedInventors: Atsushi Ochi, Takeshi Inoue, Mitsuru Yamamoto, Kenji Kuramoto, Mitsuhiro Nakajima, Takeshi Hosokawa, Hiroyuki Takahashi, Takashi Nakahara
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Publication number: 20080111451Abstract: A vibratory gyroscope including a vibrator (10) integrally having a plate-like body portion (11) spreading along a reference plane, three drive arms (12, 13, 14) extending in a first direction from the body portion along the reference plane, and two detection arms (15, 16) extending in a second direction opposite to the first direction from the body portion along the reference plane. The three drive arms are composed of two exciting drive arms (12, 13) that are excited in mutually opposite phases in the reference plane and a non-exciting drive arm (14) located between the two exciting drive arms. Each of the three drive arms has an arm width in a width direction along the reference plane and perpendicular to the first direction. Each of the two detection arms has an arm width greater than that of the drive arm in the width direction, thereby suppressing generation of vibrations along the reference plane.Type: ApplicationFiled: January 11, 2006Publication date: May 15, 2008Inventors: Atsushi Ochi, Takeshi Inoue, Mitsuru Yamamoto, Kenji Kuramoto, Mitsuhiro Nakajima, Takeshi Hosokawa, Hiroyuki Takahashi, Takashi Nakahara
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Patent number: 7216540Abstract: A six-legged type piezoelectric vibration gyroscope having a pair of exciting arms extending from a body (2) in a first direction (A1) with a space therebetween, one non-exciting arm (3c) extending in the first direction between the exciting arms from the body, a pair of detecting arms (4a, 4b) extending from the body in a second direction (A2) with a space therebetween, and one non-detecting arm (4c) extending in the second direction between the detecting arms from the body. The exciting arms are coupled with a drive-side electrode. The detecting arms are coupled with a detection-side electrode. The exciting arms, non-exciting arm, detecting arms, and non-detecting arm respectively consist of a piezoelectric. The respective exciting arms differ in width size from the non-exciting arm. The respective exciting arms differ in width size from the respective detecting arms. The respective exciting arms differ in width size from the non-detecting arm.Type: GrantFiled: March 5, 2004Date of Patent: May 15, 2007Assignees: Nec Corporation, Japan Aviation Electronics Industry LimitedInventors: Takeshi Inoue, Mitsuru Yamamoto, Atsushi Ochi, Kenji Kuramoto, Mitsuhiro Nakajima
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Publication number: 20060230828Abstract: A six-legged type piezoelectric vibration gyroscope having a pair of exciting arms extending from a body (2) in a first direction (A1) with a space therebetween, one non-exciting arm (3c) extending in the first direction between the exciting arms from the body, a pair of detecting arms (4a, 4b) extending from the body in a second direction (A2) with a space therebetween, and one non-detecting arm (4c) extending in the second direction between the detecting arms from the body. The exciting arms are coupled with a drive-side electrode. The detecting arms are coupled with a detection-side electrode. The exciting arms, non-exciting arm, detecting arms, and non-detecting arm respectively consist of a piezoelectric. The respective exciting arms differ in width size from the non-exciting arm. The respective exciting arms differ in width size from the respective detecting arms. The respective exciting arms differ in width size from the non-detecting arm.Type: ApplicationFiled: March 5, 2004Publication date: October 19, 2006Applicants: NEC Corporation, Japan Aviation Electronics Industry LimitedInventors: Takeshi Inoue, Mitsuru Yamamoto, Atsushi Ochi, Kenji Kuramoto, Mitsuhiro Nakajima