Patents by Inventor Masahiro AKEi
Masahiro AKEi 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: 11649784Abstract: A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; and an EGR gas passage in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are located on a first side of the cylinder head and, and a fresh air inlet communicated to the intake port and an EGR gas outlet of the EGR gas passage are located on a second side which is opposite from the first side.Type: GrantFiled: May 10, 2022Date of Patent: May 16, 2023Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Publication number: 20220268235Abstract: A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; and an EGR gas passage in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are located on a first side of the cylinder head and, and a fresh air inlet communicated to the intake port and an EGR gas outlet of the EGR gas passage are located on a second side which is opposite from the first side.Type: ApplicationFiled: May 10, 2022Publication date: August 25, 2022Applicant: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Patent number: 11333100Abstract: A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; an intake air aggregate part configured to aggregate the intake port; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.Type: GrantFiled: June 14, 2021Date of Patent: May 17, 2022Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Publication number: 20210301758Abstract: A cylinder head includes: an exhaust port configured to lead out exhaust gas from combustion chamber; an intake port configured to introduce fresh air into the combustion chamber; an intake air aggregate part configured to aggregate the intake port; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the exhaust port and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.Type: ApplicationFiled: June 14, 2021Publication date: September 30, 2021Applicant: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Patent number: 11067031Abstract: A cylinder head includes: a plurality of exhaust ports configured to lead out exhaust gas from combustion chambers; a plurality of intake ports configured to introduce fresh air into the combustion chambers; an intake air aggregate part configured to aggregate the plurality of intake ports; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the plurality of exhaust ports and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.Type: GrantFiled: November 20, 2018Date of Patent: July 20, 2021Assignee: Yanmar Power Technology Co., Ltd.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Patent number: 11035327Abstract: An engine device including: an EGR device configured to circulate, as EGR gas, a portion of exhaust gas exhausted from an exhaust manifold manifold to an intake manifold; and an EGR cooler configured to cool EGR gas and supply the EGR gas to the EGR device. The EGR cooler includes a heat exchanger and a pair of flange portions. The heat exchanger has a coolant passage and an EGR gas fluid passage alternately stacked. The flange portions are disposed on the heat exchanger. An outlet of the coolant is disposed in one of the flange portions, while an inlet of the coolant is disposed in the other flange portion. An inlet of the EGR gas is disposed in one of the flange portions, while an outlet of the EGR gas is disposed in the other flange portion.Type: GrantFiled: April 14, 2020Date of Patent: June 15, 2021Assignee: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Masataka Uchibori, Masahiro Akei
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Publication number: 20200340423Abstract: A cylinder head includes: a plurality of exhaust ports configured to lead out exhaust gas from combustion chambers; a plurality of intake ports configured to introduce fresh air into the combustion chambers; an intake air aggregate part configured to aggregate the plurality of intake ports; and a second EGR pipe in which EGR gas flows, wherein exhaust outlets of the plurality of exhaust ports and an EGR gas inlet of the second EGR pipe are arranged side-by-side on a flat left side surface, and a fresh air inlet of the intake air aggregate part and an EGR gas outlet of the second EGR pipe are arranged side-by-side on a flat right side surface.Type: ApplicationFiled: November 20, 2018Publication date: October 29, 2020Applicant: YANMAR POWER TECHNOLOGY CO., LTD.Inventors: Tomoaki Kitagawa, Masahiro Akei
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Publication number: 20200240374Abstract: An engine device including: an EGR device configured to circulate, as EGR gas, a portion of exhaust gas exhausted from an exhaust manifold manifold to an intake manifold; and an EGR cooler configured to cool EGR gas and supply the EGR gas to the EGR device. The EGR cooler includes a heat exchanger and a pair of flange portions. The heat exchanger has a coolant passage and an EGR gas fluid passage alternately stacked. The flange portions are disposed on the heat exchanger. An outlet of the coolant is disposed in one of the flange portions, while an inlet of the coolant is disposed in the other flange portion. An inlet of the EGR gas is disposed in one of the flange portions, while an outlet of the EGR gas is disposed in the other flange portion.Type: ApplicationFiled: April 14, 2020Publication date: July 30, 2020Inventors: Masataka UCHIBORI, Masahiro AKEI
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Patent number: 10626833Abstract: An engine device including: an EGR device configured to circulate, as EGR gas, a portion of exhaust gas exhausted from an exhaust manifold to an intake manifold; and an EGR cooler configured to cool EGR gas and supply the EGR gas to the EGR device. The EGR cooler includes a heat exchanger and a pair of flange portions. The heat exchanger has a coolant passage and an EGR gas fluid passage alternately stacked. The flange portions are disposed on the heat exchanger. An outlet of the coolant is disposed in one of the flange portions, while an inlet of the coolant is disposed in the other flange portion. An inlet of the EGR gas is disposed in one of the flange portions, while an outlet of the EGR gas is disposed in the other flange portion.Type: GrantFiled: March 13, 2017Date of Patent: April 21, 2020Assignee: YANMAR CO., LTD.Inventors: Masataka Uchibori, Masahiro Akei
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Publication number: 20190284993Abstract: An engine including a plurality of accessories that vibrate in a direction parallel to a crankshaft of the engine, the plurality of accessories being provided such that a phase of a resonance point in a frequency response function thereof is shifted. An engine of another aspect includes a first accessory disposed along a direction orthogonal to a crankshaft of the engine and a second accessory provided in a flywheel housing of the engine, so that a natural frequency of the first accessory and a natural frequency of the second accessory is made close to each other by causing a support rigidity of the first accessory and a support rigidity of the second accessory to be close in value to each other.Type: ApplicationFiled: December 1, 2017Publication date: September 19, 2019Applicant: Yanmar Co., Ltd.Inventor: Masahiro AKEI
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Publication number: 20190078540Abstract: An engine device (1) including: an EGR device (24) configured to circulate, as EGR gas, a portion of exhaust gas exhausted from an exhaust manifold (3) to an intake manifold (4); and an EGR cooler (27) configured to cool EGR gas and supply the EGR gas to the EGR device. The EGR cooler includes a heat exchanger (91) and a pair of flange portions (92, 93). The heat exchanger has a coolant passage and an EGR gas fluid passage alternately stacked. The flange portions are disposed on the heat exchanger. An outlet of the coolant is disposed in one of the flange portions, while an inlet of the coolant is disposed in the other flange portion. An inlet of the EGR gas is disposed in one of the flange portions, while an outlet of the EGR gas is disposed in the other flange portion.Type: ApplicationFiled: March 3, 2017Publication date: March 14, 2019Applicant: Yanmar Co., Ltd.Inventors: Masataka UCHIBORI, Masahiro AKEi