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1. 发明授权

EP2626598B1 Engines and pistons for them 有权
标题翻译：发动机和活塞的
公开(公告)号：EP2626598B1
公开(公告)日：2016-08-03
申请号：EP13000440.1
申请日：2013-01-30
申请人： Kubota Corporation
发明人： Kuwayama, Hiroki , Yamazaki, Takahiro , Ishigaki, Yutaka , Koyama, Hideyuki , Miyazaki, Manabu , Tanaka, Yoshinori , Naito, Keita , Morinaga, Hidetaka
IPC分类号： F16J9/00 , F16F9/36 , F16J1/09 , F16J9/22 , F02F5/00
CPC分类号： F02F5/00 , F16J1/09 , F16J9/00 , F16J9/22

2. 发明公开

EP2626598A3 Engines and pistons for them 有权
标题翻译：发动机和活塞的
公开(公告)号：EP2626598A3
公开(公告)日：2014-04-30
申请号：EP13000440.1
申请日：2013-01-30
申请人： Kubota Corporation
发明人： Kuwayama, Hiroki , Yamazaki, Takahiro , Ishigaki, Yutaka , Koyama, Hideyuki , Miyazaki, Manabu , Tanaka, Yoshinori , Naito, Keita , Morinaga, Hidetaka
IPC分类号： F16J9/00 , F16F9/36 , F16J1/09 , F16J9/22 , F02F5/00
CPC分类号： F02F5/00 , F16J1/09 , F16J9/00 , F16J9/22
摘要： An engine in which an oil consumption and a leakage of blow-by gas can be stably reduced for a long period of time has a piston including a first land 3, a first ring groove 4, a second land 5, a second ring groove 6, a third land 7, a third ring groove 8, and a piston skirt 9 formed on a piston peripheral wall 1 in this order from the head of the piston. A first pressure ring 10 is fitted in the first ring groove 4; a second pressure ring 11 is fitted in the second ring groove 6; an oil ring 12 is fitted in the third ring groove 8. A corner at a boundary between an outer peripheral face 5a of the second land 5 and a second-land-side end face 6a of the second ring groove 6 is bevelled, with a tapered face 14 having a diameter reducing toward the second ring groove 6 to form an indentation for the suppression of variation in gas pressure in the space 17 facing the second land during upward and downward movements of the piston.

3. 发明公开

EP2626598A2 Engines and pistons for them 有权
标题翻译： Motoren und Kolbendafür
公开(公告)号：EP2626598A2
公开(公告)日：2013-08-14
申请号：EP13000440.1
申请日：2013-01-30
申请人： Kubota Corporation
发明人： Kuwayama, Hiroki , Yamazaki, Takahiro , Ishigaki, Yutaka , Koyama, Hideyuki , Miyazaki, Manabu , Tanaka, Yoshinori , Naito, Keita , Morinaga, Hidetaka
IPC分类号： F16J9/00
CPC分类号： F02F5/00 , F16J1/09 , F16J9/00 , F16J9/22
摘要： An engine in which an oil consumption and a leakage of blow-by gas can be stably reduced for a long period of time has a piston including a first land 3, a first ring groove 4, a second land 5, a second ring groove 6, a third land 7, a third ring groove 8, and a piston skirt 9 formed on a piston peripheral wall 1 in this order from the head of the piston. A first pressure ring 10 is fitted in the first ring groove 4; a second pressure ring 11 is fitted in the second ring groove 6; an oil ring 12 is fitted in the third ring groove 8. A corner at a boundary between an outer peripheral face 5a of the second land 5 and a second-land-side end face 6a of the second ring groove 6 is bevelled, with a tapered face 14 having a diameter reducing toward the second ring groove 6 to form an indentation for the suppression of variation in gas pressure in the space 17 facing the second land during upward and downward movements of the piston.
摘要翻译：能够长时间稳定地减少耗油量和窜气泄漏的发动机具有活塞，该活塞包括第一焊盘3，第一环槽4，第二焊盘5，第二环槽6 ，从活塞头开始依次形成在活塞周壁1上的第三平台7，第三环槽8和活塞裙部9。第一压力环10装配在第一环槽4中; 第二压力环11装配在第二环槽6中; 油环12装配在第三环槽8中。第二槽脊5的外周面5a与第二环槽6的第二岸侧端面6a之间的边界处的角部是倾斜的，锥形面14具有朝向第二环槽6的直径减小，以形成用于在活塞向上和向下运动期间面对第二接合面的空间17中的气压的变化的压痕。

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