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

IPC: F01M5/00 ,  F01M1/02 ,  F01M11/02 ,  F02B67/04

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.

公开(公告)号：US20140290226A1

公开(公告)日：2014-10-02

申请号：US14196540

申请日：2014-03-04

Applicant: KUBOTA Corporation

Inventor： Hideyuki KOYAMA ,  Tomoya AKITOMO ,  Yuichi TAMAKI ,  Ryutaro KOMURA

IPC: F01N3/38 ,  F01N3/28

CPC classification number: F01N3/38 ,  F01N3/025 ,  F01N3/035 ,  F01N3/2033 ,  F01N13/0097 ,  F01N2240/14 ,  F01N2260/022 ,  F23G7/065 ,  F23G7/07 ,  F23Q7/06 ,  Y02T10/26

Abstract: An engine exhaust treatment apparatus, which suppresses thermal damage to an electrothermal ignition apparatus, includes: an exhaust passage; an oxidation catalyst disposed in the exhaust passage; a combustible gas generator; a combustible gas supplying passage; a heat dissipation port opened upstream in the exhaust passage from the oxidation catalyst and in a downstream part of the combustible gas supplying passage, the exhaust passage and the combustible gas supplying passage communicating with each other through the heat dissipation port; and an electrothermal ignition apparatus disposed in the combustible gas supplying passage. Heat of flaming combustion of the combustible gas ignited by the electrothermal ignition apparatus is supplied to the exhaust passage, to raise the temperature of exhaust in the exhaust passage. A heat dissipation plate is attached to an outer projecting portion of the electrothermal ignition apparatus. The outer projecting portion projects outside a wall of the exhaust treatment apparatus.

Abstract translation: 抑制对电热点火装置的热损伤的发动机排气处理装置包括：排气通路; 设置在排气通道中的氧化催化剂; 可燃气体发生器; 可燃气体供应通道; 从所述氧化催化剂和所述可燃性气体供给路径的下游侧向所述排气通路的上游侧开口的散热口，所述排气通路和所述可燃性气体供给路径通过所述散热口相互连通; 以及设置在所述可燃性气体供给路径中的电热点火装置。 由电热点火装置点燃的可燃气体的燃烧燃烧的热量被供给到排气通道，以提高排气通道中的排气温度。 散热板附接到电热点火装置的外部突出部分。 外突出部突出到废气处理装置的壁的外侧。

公开(公告)号：US20210388754A1

公开(公告)日：2021-12-16

申请号：US17282904

申请日：2019-09-09

Applicant: KUBOTA Corporation

Inventor： Hideyuki KOYAMA ,  Mitsugu OKUDA ,  Yuji SHINOHARA ,  Mitsuru KAMIYAMA ,  Hiroki OSO

IPC: F02B19/08 ,  F02M61/18 ,  F02B19/14

Abstract: 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.

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

IPC: F02F1/16 ,  F01P3/02

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。

公开(公告)号：US20190186386A1

公开(公告)日：2019-06-20

申请号：US16205855

申请日：2018-11-30

Applicant: KUBOTA Corporation

Inventor： Akira TANAKA ,  Hiroki OSO ,  Yoshinori TANAKA ,  Hideyuki KOYAMA ,  Takahiro YAMAZAKI ,  Nobuyoshi OKADA

IPC: F02D17/04 ,  F02M59/44

Abstract: 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.

公开(公告)号：US20160312739A1

公开(公告)日：2016-10-27

申请号：US15134470

申请日：2016-04-21

Applicant: KUBOTA Corporation

Inventor： Hiroki OSO ,  Hideyuki KOYAMA ,  Manabu MIYAZAKI ,  Hideyuki GOTO ,  Takahito HAMASAKI ,  Takahiro YAMAZAKI

IPC: F02F3/10 ,  F02F3/00

CPC classification number: F02F3/10 ,  F02F3/00 ,  F02F3/0084 ,  F02F3/027 ,  F05C2253/12 ,  F05C2253/20 ,  F16J1/02 ,  F16J1/08

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20150034043A1

公开(公告)日：2015-02-05

申请号：US13954392

申请日：2013-07-30

Applicant: KUBOTA Corporation

Inventor： Hiroki KUWAYAMA ,  Takahiro YAMAZAKI ,  Yutaka ISHIGAKI ,  Hideyuki KOYAMA ,  Manabu MIYAZAKI ,  Katsunori IKEMACHI ,  Yoshinori TANAKA

IPC: F02B19/14

CPC classification number: F02B19/12 ,  F02B17/005 ,  F02B19/10 ,  F02B19/1009 ,  F02B19/14 ,  F02B19/18 ,  Y02T10/125

Abstract: A subchamber type combustion chamber for a diesel engine, which reduces fuel consumption rate and combustion noise. To achieve the object, a subchamber type combustion chamber is communicated with a main combustion chamber through a nozzle hole, a fuel injection nozzle faces into the subchamber, and a glow plug extends into the subchamber. A heat generating portion of the glow plug includes a rod-shaped portion and a projecting portion projecting from an end of the rod-shaped portion. The projecting portion is provided with a convex curved surface projecting from a circular peripheral edge at the end of the rod-shaped portion while the convex curved surface is reduced in diameter. The percentage of value P/D obtained by dividing projection dimension P of the projecting portion from the end of the rod-shaped portion by diameter dimension D at the end of the rod-shaped portion is 3% to 23%.

Abstract translation: 用于柴油发动机的子舱型燃烧室，其降低燃料消耗率和燃烧噪声。 为了达到上述目的，一个小室型燃烧室通过喷嘴孔与主燃烧室连通，燃料喷嘴面向子室，电热塞延伸到子房中。 电热塞的发热部包括棒状部和从棒状部的端部突出的突出部。 突出部设置有从弯曲部的端部的圆周方向突出的凸曲面，而凸曲面的直径减小。 通过将棒状部分的端部的突出部分的突出尺寸P除以在杆状部分的端部处的直径尺寸D获得的值P / D的百分比为3％至23％。

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.

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

IPC: F01M13/04 ,  F01M13/00

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。

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

IPC: F01P7/16 ,  F01P5/02 ,  F01P5/10 ,  F01P1/06 ,  F01P3/02

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。