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公开(公告)号:US09429066B2
公开(公告)日:2016-08-30
申请号:US13954392
申请日:2013-07-30
申请人: KUBOTA Corporation
发明人: Hiroki Kuwayama , Takahiro Yamazaki , Yutaka Ishigaki , Hideyuki Koyama , Manabu Miyazaki , Katsunori Ikemachi , Yoshinori Tanaka
CPC分类号: F02B19/12 , F02B17/005 , F02B19/10 , F02B19/1009 , F02B19/14 , F02B19/18 , Y02T10/125
摘要: 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%.
摘要翻译: 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%。
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公开(公告)号:US09027933B2
公开(公告)日:2015-05-12
申请号:US13760296
申请日:2013-02-06
申请人: KUBOTA Corporation
发明人: Hiroki Kuwayama , Takahiro Yamazaki , Yutaka Ishigaki , Hideyuki Koyama , Manabu Miyazaki , Yoshinori Tanaka , Keita Naito , Hidetaka Morinaga
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. The engine includes 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 the above-recited order from a side of a piston head (2). 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) fitted in the third ring groove (8), and an indentation (13) is formed at the second land (5).
摘要翻译: 可以长时间稳定地降低油耗和窜气泄漏的发动机。 发动机包括第一平台(3),第一环槽(4),第二凸台(5),第二环槽(6),第三凸台(7),第三环槽(8)和 从活塞头(2)的一侧按照上述顺序形成在活塞周壁(1)上的活塞裙(9)。 第一压力环(10)装配在第一环形槽(4)中。 第二压力环(11)装配在第二环槽(6)中,装配在第三环槽(8)中的油环(12)和凹陷(13)形成在第二焊盘(5)处。
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