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：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

IPC: F02M26/22 ,  F02M26/41 ,  F01P3/20

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.

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：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

IPC: F01P3/02 ,  F02F1/42 ,  F02M35/104 ,  F01P11/04 ,  F02M35/10 ,  F02F1/40 ,  F02F1/14

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。