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公开(公告)号：US20190203669A1
公开(公告)日：2019-07-04
申请号：US16202209
申请日：2018-11-28
Applicant: KUBOTA Corporation
Inventor： Yoshikazu TAKEMOTO , Hideyuki GOTO , Takahito HAMASAKI , Kentaro NAGAI , Tomoya AKITOMO , Kumiko SAKAGUCHI
CPC classification number: F02M26/22 , F02M26/11 , F02M26/41 , F28D7/106 , F28D21/0003 , F28F1/025 , F28F1/06
Abstract: An engine with an EGR device includes an engine case, and an EGR pipe that introduces an EGR gas into an intake path. The EGR pipe is arranged to pass through an inside of the engine case. A part of the EGR pipe in the engine case is arranged to face a cooling water path in the engine case. The engine case is defined by a cylinder head. The cooling water path is arranged to surround a whole circumference of the EGR pipe.
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公开(公告)号：US20180003093A1
公开(公告)日：2018-01-04
申请号：US15618226
申请日：2017-06-09
Applicant: KUBOTA Corporation
Inventor： Hiroki OSO , Hideyuki KOYAMA , Hideyuki GOTO , Takahiro YAMAZAKI , Kentaro NAGAI , Takashi YAMAGUCHI , Rina KANEKO
Abstract: An oil cooling structure of an engine is provided that is capable of enhancing cooling performance of oil while preventing an increase in number of components or an increase in required space from being involved as much as possible. In an oil cooling structure of an engine in which a transmission case is attached to one end wall of an engine body, and a transmission mechanism for an accessory drive is provided in the transmission case, the transmission case is formed into a potlid-shaped body having a plurality of rib walls along a front-rear direction, and is attached to an engine front wall with an engine cooling fan, and case inner chamber portions partitioned by the rib walls in the transmission case are configured as a transporting passage of oil circulated by an oil pump.
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公开(公告)号：US20200208551A1
公开(公告)日：2020-07-02
申请号：US16683394
申请日：2019-11-14
Applicant: KUBOTA Corporation
Inventor： Kentaro NAGAI , Takahiro YAMAZAKI , Reo YOSHIDA , Tomoya AKITOMO , Shoichi OKIMI
Abstract: A cylinder head cover that prevents the gas outlet for the blow-by gas from being cooled by structural improvements so that the gas outlet does not freeze or become clogged in a cold condition. A cylinder head cover includes: a gas passage through which blow-by gas from a crankcase passes; and a gas outlet portion protruding upward from a head cover upper wall. The gas outlet portion includes a protruding case portion bulging upward from the head cover upper wall so as to form an outlet passage through which blow-by gas passes, and an air layer is formed outside the outlet passage in the protruding case portion.
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公开(公告)号：US20160102595A1
公开(公告)日：2016-04-14
申请号：US14842988
申请日：2015-09-02
Applicant: KUBOTA Corporation
Inventor： Kentaro NAGAI , Hiroshi KUWASAKI , Tadashi NAKANO , Takahito HAMASAKI , Yoshinori TANAKA , Masaya MORI
CPC classification number: F01P3/02 , F01P11/04 , F01P2003/021 , F01P2003/024 , F02F1/14 , F02F1/40 , F02F1/4285 , F02M35/10091 , F02M35/104
Abstract: There is provided a cylinder head cooling apparatus of an engine capable of enhancing cooling efficiency around an auxiliary combustion chamber wall. The cylinder head cooling apparatus of an engine including a cylinder head having therein an intake port, an exhaust port, an auxiliary combustion chamber, and a cooling water jacket, in which an intake port wall, an exhaust port wall, and an auxiliary combustion chamber wall are placed in the cooling water jacket, the cooling water jacket includes a cooling water inlet and a cooling water outlet, engine cooling water flowed from the cooling water inlet into the cooling water jacket flows out from the cooling water outlet through the cooling water jacket, wherein a cooling water guide wall is provided upstream of the auxiliary combustion chamber wall in a cooling water passing path of the cooling water jacket, and the upstream cooling water guide wall is formed into a shape whose width gradually widens toward a downstream side.
Abstract translation: 提供了能够提高辅助燃烧室壁周围的冷却效率的发动机的气缸盖冷却装置。 一种发动机的气缸盖冷却装置，其包括具有进气口，排气口，辅助燃烧室和冷却水套的气缸盖，其中进气口壁，排气口壁和辅助燃烧室 壁放置在冷却水套中，冷却水套包括冷却水入口和冷却水出口，从冷却水入口流入冷却水套管的发动机冷却水从冷却水出口经冷却水套流出 其特征在于，在冷却水套的冷却水通过路径的辅助燃烧室壁的上游侧设置有冷却水导向壁，上游侧冷却水引导壁形成为朝向下游侧逐渐变宽的形状。
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公开(公告)号：US20210199074A1
公开(公告)日：2021-07-01
申请号：US17096928
申请日：2020-11-12
Applicant: KUBOTA Corporation
Inventor： Kentaro NAGAI , Ryutaro KOMURA , Takashi YAMAGUCHI , Kumiko SAKAGUCHI , Takahiro YAMAZAKI
Abstract: An engine exhaust manifold including exhaust inlet parts at four locations corresponding to a plurality of exhaust ports, one exhaust outlet part, and an exhaust confluence part to collect exhaust gas from each of the exhaust inlet parts and send to the exhaust outlet part. An EGR passage part to send EGR gas toward an intake passage is formed.
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Patent Agency Ranking
公开(公告)号：US20150267636A1
公开(公告)日：2015-09-24
申请号：US14633317
申请日：2015-02-27
Applicant: KUBOTA CORPORATION
Inventor： Kentaro NAGAI , Hideyuki KOYAMA , Hideyuki GOTO , Takahiro YAMAZAKI , Hiroshi KUWASAKI
CPC classification number: F02F1/16 , F01P3/02 , F01P2003/021 , F02F1/10 , F02F1/14 , F02F2001/106
Abstract: An engine cooler capable of suppressing a piston slap sound is provided. The engine cooler includes a cylinder block including a cylinder barrel and a water jacket, and a spacer stored in the water jacket, the water jacket surrounds the cylinder barrel, and the spacer encloses the cylinder barrel. Given that a width direction of the cylinder block is a lateral direction, a pressed member is pressed between the cylinder barrel and the spacer on lateral sides of the cylinder barrel, and a lower end of the pressed member is disposed above a lower end of each of right and left skirts of a piston located at a top dead center.
Abstract translation: 提供能够抑制活塞敲击声的发动机冷却器。 发动机冷却器包括：气缸体，其包括气缸筒和水套;以及储存在水套中的间隔件，水套围绕气缸筒，间隔件包围气缸筒。 假定气缸体的宽度方向为横向，则在缸筒和缸筒的侧面上的间隔件之间按压构件，并且按压构件的下端设置在每个缸体的下端上方 位于上止点的活塞的右侧和左侧裙部。
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公开(公告)号：US20170350344A1
公开(公告)日：2017-12-07
申请号：US15609195
申请日：2017-05-31
Applicant: KUBOTA Corporation
Inventor： Hiroki OSO , Hideyuki KOYAMA , Takahiro YAMAZAKI , Kentaro NAGAI , Rina KANEKO
IPC: F02F3/10
CPC classification number: F02F3/10
Abstract: A piston for an engine is provided, that makes it possible to improve supply of engine oil to a recessed part thereof. The piston includes a resin coating film and a recessed part on a surface of a skirt part. In the piston, resin coating films are distributed in a patchy fashion on the surface of the skirt part. The recessed part is formed by the surface of the skirt part, between adjacent surfaces of the patchy resin coating films and by the adjacent resin coating films, forming a net-like groove. An outer-edge resin coating film, extending in a piston movement direction, is provided at the ends, in a piston circumferential direction of the skirt part.
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公开(公告)号：US20160363017A1
公开(公告)日：2016-12-15
申请号：US15177444
申请日：2016-06-09
Applicant: KUBOTA Corporation
Inventor： Kentaro NAGAI , Takahiro YAMAZAKI , Takahito HAMASAKI , Hideyuki GOTO , Hiroki OSO , Hideyuki KOYAMA , Akira TANAKA , Yoshinori TANAKA
CPC classification number: F01M13/04 , F01M13/0011 , F01M13/0416 , F01M2013/0038 , F01M2013/045 , F01M2013/0488
Abstract: There is provided an engine capable of reducing oil consumption. The engine includes a cylinder head, a cylinder head cover mounted above the cylinder head, a rocker arm covered by the cylinder head cover, and a breather chamber provided inside the cylinder head cover. As a front-rear direction is defined by a longitudinal direction of the cylinder head cover, the breather chamber has a blow-by gas inlet at one side in the front-rear direction, a blow-by gas outlet at another side in the front-rear direction, and an oil discharging guide chamber at an intermediate part in the front-rear direction. The blow-by gas inlet is opened on a bottom wall of the breather chamber, and a peripheral wall of the oil discharging guide chamber is protruded downwardly from the bottom wall of the breather chamber toward between the rocker arm provided at a side of the blow-by gas outlet and the blow-by gas inlet.
Abstract translation: 提供能够降低油耗的发动机。 发动机包括气缸盖，安装在气缸盖上方的气缸盖，由气缸盖罩覆盖的摇臂，以及设置在气缸盖罩内的通气室。 由于前后方向由气缸盖罩的长度方向限定，所以通气室在前后方向的一侧具有窜缸入口，在前侧的另一侧具有窜缸出气口 并且在前后方向的中间部分设有排油引导室。 窜气入口在通气室的底壁上打开，排油引导室的周壁从通气室的底壁朝向设置在吹气侧的摇臂之间向下突出 通过气体出口和窜气入口。
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公开(公告)号：US20160281555A1
公开(公告)日：2016-09-29
申请号：US14959174
申请日：2015-12-04
Applicant: KUBOTA Corporation
Inventor： Kentaro NAGAI , Hideyuki GOTO , Takahiro YAMAZAKI , Hiroki OSO
CPC classification number: F01M1/10 , F01M11/0004 , F01M2001/0292 , F01M2001/1078 , F01M2011/005 , F01M2011/007
Abstract: There is provided an engine lubricating device with which passage resistance of an oil strainer can be reduced and a support stay for an oil filter is unnecessary. An oil strainer includes an outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder respectively have straight central axes and form inner and outer double cylinders, the outer cylinder has a strainer inlet at a lower end, the inner cylinder has a peripheral wall formed as a filter portion, the oil strainer is led out in an orientation inclined downward from the cylinder block toward an inner bottom portion of an oil pan, an upper end portion of the outer cylinder is fixed to a cylinder block, and an upper end opening portion of the inner cylinder communicates with an oil passage inlet of the cylinder block.
Abstract translation: 提供了一种发动机润滑装置，能够减少滤油器的通路阻力，并且不需要油滤清器的支撑停留。 油过滤器包括外筒和内筒，外筒和内筒分别具有直的中心轴线并形成内外双筒，外筒在下端具有过滤器入口，内筒具有外周 壁形成为过滤部，油过滤器以从气缸体朝向油底壳的内底部向下倾斜的方向引出，外筒的上端部固定在气缸体上，上部 内筒的端部开口部与气缸体的油路入口连通。
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公开(公告)号：US20160090895A1
公开(公告)日：2016-03-31
申请号：US14842520
申请日：2015-09-01
Applicant: KUBOTA Corporation
Inventor： Naoya SAKURAI , Hideyuki KOYAMA , Hideyuki GOTO , Kentaro NAGAI , Tadashi NAKANO
CPC classification number: F01P7/16 , F01P1/06 , F01P3/02 , F01P5/02 , F01P5/10 , F01P5/12 , F01P11/04 , F01P2003/024 , F01P2003/025
Abstract: There is provided an engine water-cooling device that can increase warming-up efficiency of an engine. The engine water-cooling device includes a thermostat housing that houses a thermostat. The thermostat housing is mounted to a front wall of a cylinder head in one side portion in a width direction of the cylinder head. A cooling water pump is mounted to a front wall of a cylinder block in a central portion in a width direction of the cylinder block. A bypass passage includes an intra-head bypass passage in the cylinder head, and the intra-head bypass passage includes a width-direction passage portion extending from a position behind the thermostat housing to a position behind and above the cooling water pump.
Abstract translation: 提供了可以提高发动机的预热效率的发动机水冷装置。 发动机水冷装置包括容纳恒温器的恒温器壳体。 恒温器壳体在气缸盖的宽度方向上的一个侧部中安装到气缸盖的前壁。 在气缸体的宽度方向的中央部，将气缸体的前壁安装在冷却水泵上。 旁通通路包括气缸盖内的头内旁路通路，头内旁路通路包括从恒温器壳体后方的位置延伸到冷却水泵后方位置的宽度方向通路部。
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