Patents by Inventor Tomoaki Kitagawa
Tomoaki Kitagawa 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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Publication number: 20220163008Abstract: This engine is provided with multiple injectors, and an excess fuel return pipe. The injectors inject fuel from a fuel tank into a combustion chamber. The excess fuel return pipe returns excess fuel from the injectors to the fuel tank. The excess fuel return pipe is provided with multiple injector connecting pipes and multiple linking pipes. The linking pipes are formed from an elastically deformable hose. Each of the multiple injector connecting pipes is connected to the corresponding injector. Each of the multiple linking pipes links together two mutually adjacent injector connecting pipes. Across the multiple linking pipes, pipe connecting units, to which an injector connecting pipe and a linking pipe are connected, are arranged along the same straight line.Type: ApplicationFiled: March 5, 2020Publication date: May 26, 2022Applicant: Yanmar Power Technology Co., Ltd.Inventor: Tomoaki Kitagawa
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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: 11099553Abstract: An operation plan creation device that is configured to create an operation plan for a plurality of parts to be mounted in a device includes a setting data acquisition unit configured to acquire setting data including information on a time of start of an operation of the part and a time of a scheduled performance of inspection of the part, and information on parts that are candidates for assignment to the device, for each device, an operation plan creation unit configured to create data of the operation plan including an operation period of the part from the time of the start of the operation to the time of the scheduled performance of inspection using the setting data, and an assignability determination unit configured to determine an assignability for the part.Type: GrantFiled: March 12, 2018Date of Patent: August 24, 2021Assignee: MITSUBISHI POWER, LTD.Inventors: Naoya Kawamura, Manabu Kasano, Tomoaki Kitagawa, Hiroyuki Isu, Naoyuki Fujiwara, Shun Kawachi
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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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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: 20200081428Abstract: An operation plan creation device that is configured to create an operation plan for a plurality of parts to be mounted in a device includes a setting data acquisition unit configured to acquire setting data including information on a time of start of an operation of the part and a time of a scheduled performance of inspection of the part, and information on parts that are candidates for assignment to the device, for each device, an operation plan creation unit configured to create data of the operation plan including an operation period of the part from the time of the start of the operation to the time of the scheduled performance of inspection using the setting data, and an assignability determination unit configured to determine an assignability for the part.Type: ApplicationFiled: March 12, 2018Publication date: March 12, 2020Inventors: Naoya KAWAMURA, Manabu KASANO, Tomoaki KITAGAWA, Hiroyuki ISU, Naoyuki FUJIWARA, Shun KAWACHI
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Patent number: 10466672Abstract: An apparatus for updating an operation plan of a high-temperature component based on operation performance. The apparatus includes: a display unit which displays an operation plan of multiple high-temperature components which are mounted upon a device; a storage unit which stores, for each device, at least initial setting data including information regarding operation start times of the high-temperature components and scheduled times for carrying out periodic inspections of the high-temperature components; an operation plan creation unit which, using the initial setting data, generates data of the operation plan including operation intervals of the high-temperature components from the operation start times to the scheduled times for carrying out the periodic inspections, and stores same in the storage unit for each device; and an operation plan update unit which updates the operation plan data which is displayed on the display unit, based on the high-temperature component operation performance information.Type: GrantFiled: February 10, 2014Date of Patent: November 5, 2019Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoya Kawamura, Hiroyuki Isu, Manabu Kasano, Aki Nakayama, Tsuyoshi Nakaji, Koji Matsui, Tomoaki Kitagawa
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Patent number: 10161315Abstract: An operation plan preparation and evaluation device including a storage unit for storing master data related to equipment and a component, transaction data related to the equipment and the component generated when an operation plan is prepared, and an initial parameter used when the operation plan is prepared, and a control unit for preparing the operation plan based on the master data, the transaction data, and the initial parameter, in which the control unit performs a factor setting process of assigning a predetermined set value as the initial parameter, an operation plan preparation process of preparing the operation plan based on the initial parameter serving as the set value, the master data, and the transaction data, and an operation plan evaluation process of evaluating a plurality of respective operation plans prepared by repeatedly performing the operation plan preparation process while varying the initial parameter, and deriving an optimum operation plan.Type: GrantFiled: March 27, 2015Date of Patent: December 25, 2018Assignee: MITSUBISHI HITACHI POWER SYSTEMS, LTD.Inventors: Tomoaki Kitagawa, Manabu Kasano, Aki Nakayama, Akihiko Yamada
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Publication number: 20170016400Abstract: An operation plan preparation and evaluation device including a storage unit for storing master data related to equipment and a component, transaction data related to the equipment and the component generated when an operation plan is prepared, and an initial parameter used when the operation plan is prepared, and a control unit for preparing the operation plan based on the master data, the transaction data, and the initial parameter, in which the control unit performs a factor setting process of assigning a predetermined set value as the initial parameter, an operation plan preparation process of preparing the operation plan based on the initial parameter serving as the set value, the master data, and the transaction data, and an operation plan evaluation process of evaluating a plurality of respective operation plans prepared by repeatedly performing the operation plan preparation process while varying the initial parameter, and deriving an optimum operation plan.Type: ApplicationFiled: March 27, 2015Publication date: January 19, 2017Inventors: Tomoaki KITAGAWA, Manabu KASANO, Aki NAKAYAMA, Akihiko YAMADA
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Patent number: 9523297Abstract: An engine apparatus that utilizes a gas pressure regulation valve not only for pressure adjustment but also for removal of lubricant. An engine apparatus includes a blow-by gas returning device to return a leakage of blow-by gas from a combustion chamber to an intake system. The engine apparatus includes an expansion chamber, into which the blow-by gas is introduced from the gas pressure regulation valve. In the expansion chamber, lubricant contained in the blow-by gas is isolated. The blow-by gas is returned to an intake side of an engine from the expansion chamber.Type: GrantFiled: January 11, 2013Date of Patent: December 20, 2016Assignee: YANMAR CO., LTD.Inventor: Tomoaki Kitagawa
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Publication number: 20150378338Abstract: An apparatus for updating an operation plan of a high-temperature component based on operation performance. The apparatus includes: a display unit which displays an operation plan of multiple high-temperature components which are mounted upon a device; a storage unit which stores, for each device, at least initial setting data including information regarding operation start times of the high-temperature components and scheduled times for carrying out periodic inspections of the high-temperature components; an operation plan creation unit which, using the initial setting data, generates data of the operation plan including operation intervals of the high-temperature components from the operation start times to the scheduled times for carrying out the periodic inspections, and stores same in the storage unit for each device; and an operation plan update unit which updates the operation plan data which is displayed on the display unit, based on the high-temperature component operation performance information.Type: ApplicationFiled: February 10, 2014Publication date: December 31, 2015Applicant: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Naoya KAWAMURA, Hiroyuki ISU, Manabu KASANO, Aki NAKAYAMA, Tsuyoshi NAKAJI, Koji MATSUI, Tomoaki KITAGAWA
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Patent number: 9169808Abstract: In detection of a temperature of fresh air which is supplied to an intake manifold of an engine, by a fresh air temperature sensor, the invention aims at preventing precision of an engine control from dropping due to difference in an attached position of the fresh air temperature sensor. The engine device has an intake pipe for supplying fresh air to the intake manifold, a breather chamber for separating lubricating oil, the breather chamber being arranged within a head cover covering an upper surface side of a cylinder head, and a blow-by gas return pipe. The intake pipe and the breather chamber are connected via the blow-by gas return pipe. The fresh air temperature sensor detecting a temperature of the fresh air introduced into the intake pipe is attached to the intake pipe.Type: GrantFiled: December 26, 2012Date of Patent: October 27, 2015Assignee: Yanmar Co., Ltd.Inventor: Tomoaki Kitagawa
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Publication number: 20150277432Abstract: A fastening the control system of composite members includes a shape data acquiring section configured to acquire shape data showing a measurement value of a shape of a fastener hole formed in a workpiece containing the composite members. A suitable fastener determining section is configured to determine as a suitable fastener size, a size of a fastener suitable for the fastener hole based on the shape data, and generate suitable fastener data showing the suitable fastener size.Type: ApplicationFiled: October 28, 2013Publication date: October 1, 2015Inventors: Yusuke Ikeda, Tomoaki Kitagawa
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Publication number: 20140373821Abstract: In detection of a temperature of fresh air which is supplied to an intake manifold of an engine, by a fresh air temperature sensor, the invention aims at preventing precision of an engine control from dropping due to difference in an attached position of the fresh air temperature sensor. The engine device has an intake pipe for supplying fresh air to the intake manifold, a breather chamber for separating lubricating oil, the breather chamber being arranged within a head cover covering an upper surface side of a cylinder head, and a blow-by gas return pipe. The intake pipe and the breather chamber are connected via the blow-by gas return pipe. The fresh air temperature sensor detecting a temperature of the fresh air introduced into the intake pipe is attached to the intake pipe.Type: ApplicationFiled: December 26, 2012Publication date: December 25, 2014Inventor: Tomoaki Kitagawa
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Patent number: 8915229Abstract: An engine includes a head cover covering an upper part of a cylinder head to accommodate a valve gear mechanism and an injector. The head cover is separatable into a lower cover body and an upper cover body detachable from and attachable to the lower cover body. The lower cover body includes a fuel pipe and a relay connector. Through the fuel pipe, fuel is supplied to the injector. The fuel pipe penetrates through the lower cover body. The relay connector is configured to relay power supply from outside the head cover. The relay connector is attached to the lower cover body. One end side of an injector harness disposed in the head cover is coupled to a terminal portion of the injector. Another end side of the injector harness is coupled to the relay connector.Type: GrantFiled: April 20, 2010Date of Patent: December 23, 2014Assignee: Yanmar Co., Ltd.Inventors: Daisuke Kajita, Tomoaki Kitagawa
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Publication number: 20140366855Abstract: An engine apparatus that utilizes a gas pressure regulation valve not only for pressure adjustment but also for removal of lubricant. An engine apparatus includes a blow-by gas returning device to return a leakage of blow-by gas from a combustion chamber to an intake system. The engine apparatus includes an expansion chamber, into which the blow-by gas is introduced from the gas pressure regulation valve. In the expansion chamber, lubricant contained in the blow-by gas is isolated. The blow-by gas is returned to an intake side of an engine from the expansion chamber.Type: ApplicationFiled: January 11, 2013Publication date: December 18, 2014Inventor: Tomoaki Kitagawa
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Patent number: 8781157Abstract: A flaw detection image analyzer (10) takes in an inspection procedure command stored in a flaw detection condition database (40), takes in a flaw detection image signal corresponding to a flaw detection image indicated by the taken inspection procedure command from a database (50) for flaw detection image signal, and displays the flaw detection image based on the flaw detection image signal on a display (30), with a display range and a contrast indicated by the inspection procedure command in an arrangement pattern of image indicated by the inspection procedure command. Consequently, optimum images can be displayed sequentially with optimum arrangement pattern, optimum display range and contrast according to a flaw to be inspected when a flaw is detected by observing an ultrasonic flaw detection image.Type: GrantFiled: December 6, 2013Date of Patent: July 15, 2014Assignee: Mitsubishi Heavy Industries, Ltd.Inventors: Tomoaki Kitagawa, Hiroshi Takemoto