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1. 发明申请

US20210388754A1 ELECTRONIC FUEL INJECTION TYPE DIESEL ENGINE 有权
公开(公告)号：US20210388754A1
公开(公告)日：2021-12-16
申请号：US17282904
申请日：2019-09-09
申请人： KUBOTA Corporation
发明人： Hideyuki KOYAMA , Mitsugu OKUDA , Yuji SHINOHARA , Mitsuru KAMIYAMA , Hiroki OSO
IPC分类号： F02B19/08 , F02M61/18 , F02B19/14
摘要： An electronic fuel injection type diesel engine enables reduction in engine size. The electronic fuel injection type diesel engine is provided with: a combustion chamber inside a cylinder; a fuel injection chamber inside a cylinder head; a fuel injector that injects liquid fuel into the fuel injection chamber; a fuel accumulation unit that accumulates the liquid fuel injected from the fuel injector; and an electronic control unit that controls a timing and an amount of injection of the liquid fuel.

2. 发明申请

US20190186386A1 ENGINE STOPPING DEVICE 审中-公开
公开(公告)号：US20190186386A1
公开(公告)日：2019-06-20
申请号：US16205855
申请日：2018-11-30
申请人： KUBOTA Corporation
发明人： Akira TANAKA , Hiroki OSO , Yoshinori TANAKA , Hideyuki KOYAMA , Takahiro YAMAZAKI , Nobuyoshi OKADA
IPC分类号： F02D17/04 , F02M59/44
摘要： There is provided an engine stopping device including a stopping solenoid, where an operating shaft, interlocked to a control rack of a fuel injection pump, is rotatably supported by an engine case in a pass-through manner. The control rack is forcibly movable to a stopping position by an action of the stopping solenoid on an operation arm provided for a projecting portion of the operating shaft in an integrally rotatable manner. An extending-retracting rod of the stopping solenoid and the operation arm are interlocked by fitting engagement between a pin provided for the extending-retracting rod and a cut-out portion of the operation arm. The cut-out portion is configured in a shape elongated along a direction perpendicular to a movement trajectory of the extending-retracting rod.

3. 发明申请

US20160312739A1 PISTON FOR ENGINE 有权
标题翻译：发动机活塞
公开(公告)号：US20160312739A1
公开(公告)日：2016-10-27
申请号：US15134470
申请日：2016-04-21
申请人： KUBOTA Corporation
发明人： Hiroki OSO , Hideyuki KOYAMA , Manabu MIYAZAKI , Hideyuki GOTO , Takahito HAMASAKI , Takahiro YAMAZAKI
IPC分类号： F02F3/10 , F02F3/00
CPC分类号： F02F3/10 , F02F3/00 , F02F3/0084 , F02F3/027 , F05C2253/12 , F05C2253/20 , F16J1/02 , F16J1/08
摘要： A piston for an engine includes a skirt part, and a resin coating film and a recess formed on a surface of the skirt part. A plurality of the resin coating films are discretely arranged in spots on the surface of the skirt part, and a mesh-like groove is formed by the recess provided between the resin coating films. The recess formed on the skirt part between the resin coating films adjacent to each other in a piston circumference direction is set to be adjacent to another resin coating film in a piston moving direction. An end part of the resin coating film in the piston moving direction is formed in a concave shape when seen in a piston radius direction.
摘要翻译：用于发动机的活塞包括裙部，树脂涂膜和形成在裙部的表面上的凹部。多个树脂涂膜在裙部的表面上离散地布置成点状，并且通过设置在树脂涂膜之间的凹部形成网状凹槽。在活塞周向彼此相邻的树脂涂膜之间的裙部上形成的凹部被设定为与活塞移动方向上的另一树脂涂膜相邻。当在活塞半径方向上观察时，活塞移动方向上的树脂涂膜的端部形成为凹形。

4. 发明申请

US20180003093A1 OIL COOLING STRUCTURE OF ENGINE 审中-公开
公开(公告)号：US20180003093A1
公开(公告)日：2018-01-04
申请号：US15618226
申请日：2017-06-09
申请人： KUBOTA Corporation
发明人： Hiroki OSO , Hideyuki KOYAMA , Hideyuki GOTO , Takahiro YAMAZAKI , Kentaro NAGAI , Takashi YAMAGUCHI , Rina KANEKO
IPC分类号： F01M5/00 , F01M1/02 , F01M11/02 , F02B67/04
摘要： 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.

5. 发明申请

US20200340388A1 EXHAUST SYSTEM FOR ENGINE 审中-公开
公开(公告)号：US20200340388A1
公开(公告)日：2020-10-29
申请号：US16857245
申请日：2020-04-24
申请人： KUBOTA Corporation
发明人： Hiroki OSO , Nobuyoshi OKADA , Hideyuki KOYAMA , Yoshinori TANAKA , Kenji OKAMOTO
IPC分类号： F01N13/16 , F01N13/18 , F01N13/10 , F02B37/02
摘要： Provided is an exhaust system for an engine in which a fastening force of a fastener hardly decreases. An exhaust system for an engine includes: an exhaust passage component of ferrous metal; and a fastener that fastens the exhaust passage component to other parts, the exhaust passage component including a pressure receiving surface that receives a fastening force of the fastener. The oxide film of triiron tetraoxide is formed on the pressure receiving surface of the exhaust passage component. It is preferable that the oxide film of triiron tetraoxide be also formed on an outer surface other than the pressure receiving surface of the exhaust passage component. It is preferable that the oxide film of triiron tetraoxide be also formed on an inner surface of the exhaust passage component.

6. 发明申请

US20180179984A1 COOLING STRUCTURE OF WATER-COOLED ENGINE 审中-公开
公开(公告)号：US20180179984A1
公开(公告)日：2018-06-28
申请号：US15827670
申请日：2017-11-30
申请人： KUBOTA Corporation
发明人： Hiroki OSO , Takahiro YAMAZAKI , Hideyuki KOYAMA , Rina KANEKO , Yoshinori TANAKA , Takashi YAMAGUCHI , Akira TANAKA
IPC分类号： F02F1/10 , F01P3/02 , F01P11/04
CPC分类号： F02F1/10 , F01P3/02 , F01P11/04 , F01P2003/021 , F02F1/14 , F02F2001/106
摘要： A cooling structure of a water-cooled engine includes: a plurality of cylinders 2 arranged in a cylinder block 1; and a water jacket W formed around the plurality of cylinders 2. The water jacket W includes a pair of main flow paths 7, 8 formed in a state of extending in a cylinder arrangement direction outside the cylinders, and inter-bore flow paths 9, 10 formed between adjacent cylinders 2 in a state of connecting the pair of main flow paths 7, 8. Guide walls 11h, 13h, capable of guiding the cooling water flowing in the main flow paths 7, 8 to the inter-bore flow paths 9, 10, are formed in the cylinder block 1.

7. 发明申请

US20230008602A1 ENGINE HEAD STRUCTURE 有权
公开(公告)号：US20230008602A1
公开(公告)日：2023-01-12
申请号：US17785528
申请日：2021-03-08
申请人： KUBOTA Corporation
发明人： Akira TAMURA , Kensuke FUJITA , Hiroki OSO , Yasushi KOBAYASHI , Shingo MATSUNOBU , Mitsugu OKUDA
IPC分类号： F02F1/24 , F02M55/02
摘要： To provide an engine head structure for “omission or shortening a fuel pipe that withstands a high pressure”, “simplification or omission of a support bracket for a fuel accumulator and/or a fuel injection device”, “reduction of the number of parts” by devising a fuel accumulator and a support structure therefor, and the like. An engine head structure has a support bracket for mounting a fuel accumulator including a joining portion with a fuel injection device on a cylinder head, is disposed on a side of the fuel injection device or between adjacent fuel injection devices. The support bracket includes a member having a mounting portion on which the fuel accumulator is placed and mounted, a mounting leg portion extending from the mounting portion and mounted on the cylinder head, and an aligning leg portion extending from the mounting portion for positioning the support bracket with respect to the cylinder head.

8. 发明申请

US20170370397A1 DEVICE WITH ADJUSTMENT BOLT 审中-公开
公开(公告)号：US20170370397A1
公开(公告)日：2017-12-28
申请号：US15617084
申请日：2017-06-08
申请人： KUBOTA Corporation
发明人： Hiroki OSO , Naoya SAKURAI , Takumi FUKUDA , Mitsugu OKUDA , Wataru IWANAGA , Yusuke SUZUKI , Takahiro KAJIHARA
IPC分类号： F16B39/12 , F16B39/08
CPC分类号： F16B39/12 , F16B21/183 , F16B37/14 , F16B39/08 , F16B41/005
摘要： A device with an adjustment bolt includes a bolt attachment wall, an adjustment bolt screwed with an internal thread hole of the bolt attachment wall, a locknut screwed with the adjustment bolt, a cover that surrounds the adjustment bolt and the locknut, and a stopper unit that prevents removal of the cover from the locknut. The stopper unit includes an inner circumference groove of the cover fitted around a C-shaped retaining ring, and an external circumference groove of the locknut fitting within the retaining ring. The external circumference groove includes a first groove portion having a large-diameter groove bottom that restricts contraction and removal of the retaining ring fitted within the inner circumference groove, and a second groove portion provided continuously for the first groove portion and having a small-diameter groove bottom that allows contraction and removal of the retaining ring fitted within the inner circumference groove.

9. 发明申请

US20170350344A1 PISTON FOR ENGINE 审中-公开
公开(公告)号：US20170350344A1
公开(公告)日：2017-12-07
申请号：US15609195
申请日：2017-05-31
申请人： KUBOTA Corporation
发明人： Hiroki OSO , Hideyuki KOYAMA , Takahiro YAMAZAKI , Kentaro NAGAI , Rina KANEKO
IPC分类号： F02F3/10
CPC分类号： F02F3/10
摘要： 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.

10. 发明申请

US20160363017A1 ENGINE 审中-公开
标题翻译：发动机
公开(公告)号：US20160363017A1
公开(公告)日：2016-12-15
申请号：US15177444
申请日：2016-06-09
申请人： KUBOTA Corporation
发明人： Kentaro NAGAI , Takahiro YAMAZAKI , Takahito HAMASAKI , Hideyuki GOTO , Hiroki OSO , Hideyuki KOYAMA , Akira TANAKA , Yoshinori TANAKA
IPC分类号： F01M13/04 , F01M13/00
CPC分类号： F01M13/04 , F01M13/0011 , F01M13/0416 , F01M2013/0038 , F01M2013/045 , F01M2013/0488
摘要： 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.
摘要翻译：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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