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1. 发明专利

JP2011080436A Piston 有权
标题翻译：活塞
公开(公告)号：JP2011080436A
公开(公告)日：2011-04-21
申请号：JP2009234526
申请日：2009-10-08
申请人： Toyota Central R&D Labs Inc , Toyota Motor Corp , トヨタ自動車株式会社 , 株式会社豊田中央研究所
发明人： MITA SHUZO , INAGAKI HIDETO , KATSUMI NORIKAZU , NOZAWA MIGI , KUROISHI SHINKATSU , KONDO YASUHIRO , MAGAI TOMOSHI , SAKURAGI TAKESHI , MURAKAMI GENICHI , KOYAMAISHI NAOTO
IPC分类号： F02F3/00 , F16J1/04
摘要： PROBLEM TO BE SOLVED: To further reduce a frictional force of a piston in a cylinder piston mechanism. SOLUTION: A skirt portion 18 of a piston 14 has a cross-sectional shape profile within a plane perpendicular to an axial direction being substantially the same along the axial direction. The cross-sectional shape profile includes: a central region having a predetermined central ellipticity defined beforehand, in a range of a predefined central region length B in a portion in a thrust direction and anti-thrust direction relative to a cylinder bore 12; both side regions having a both sides portion ellipticity larger than central ellipticity, in ranges of both sides of the central regions; and a connection region in which the central region and the both side regions are connected, a clearance with an inner diameter of a cylinder bore 12 has a central connection portion clearance defined beforehand in a connection point with the central region, a clearance from the inner diameter of the cylinder bore 12 has a both sides connection portion clearance C1 defined beforehand in a connection point with the both side regions. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：进一步降低气缸活塞机构中的活塞的摩擦力。解决方案：活塞14的裙部18在垂直于轴向方向的平面内具有沿轴向基本上相同的横截面形状轮廓。横截面形状轮廓包括：在预定中心区域长度B的推力方向上的部分和相对于气缸孔12的抗推力方向的预定中心椭圆率的中心区域; 在两个中央区域的两侧的范围内具有比中心椭圆率大的椭圆率的两侧部分的两侧部分区域; 以及连接中心区域和两侧区域的连接区域，具有缸孔12的内径的间隙具有与中心区域连接点预先限定的中心连接部空隙，与内侧的间隙气缸孔12的直径具有预先在与两侧区域的连接点中限定的两侧连接部分间隙C1。版权所有（C）2011，JPO＆INPIT

2. 发明专利

JP2009121311A Piston for internal combustion engine and internal combustion engine 审中-公开
标题翻译：内燃机和内燃机的活塞
公开(公告)号：JP2009121311A
公开(公告)日：2009-06-04
申请号：JP2007295350
申请日：2007-11-14
申请人： Toyota Central R&D Labs Inc , 株式会社豊田中央研究所
发明人： INAGAKI HIDETO , NOZAWA MIGI , SHIMURA YOSHIO
IPC分类号： F02F3/00 , F16J1/00 , F16J9/00 , F16J9/20 , F16J9/26
摘要： PROBLEM TO BE SOLVED: To suppress temperature rise of a top face of a piston and to reduce friction loss at a piston skirt portion.
SOLUTION: An oil ring groove 23 is formed between a piston head portion 14 and the piston skirt portion 16 at an outer circumferential part of the piston, and a slit hole 24 opening to the oil ring groove 23 is formed along the circumferential direction of the piston between the piston head portion 14 and the piston skirt portion 16. In the oil ring groove 23, a heat transfer ring 36 is attached as a component discrete from piston rings, which transfers heat from the piston head portion 14 to the piston skirt portion 16, by pressing its surfaces against both of a side face 23b on the piston head portion 14 side and a side face 23c on the piston skirt portion 16 side inside the oil ring groove 23.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：抑制活塞顶面的温度升高并减少活塞裙部的摩擦损失。解决方案：在活塞的外周部分的活塞头部分14和活塞裙部16之间形成一个油环槽23，沿着圆周方向形成一个通向油环槽23的狭缝孔24 活塞头部14和活塞裙部16之间的活塞的方向。在油环槽23中，传热环36作为与从活塞头部14传递热量的活塞环离散的部件附接到活塞裙部16通过将其表面压靠在活塞头部14侧的侧面23b和油环槽23内的活塞裙部16侧的侧面23c上。（C） 2009年，JPO＆INPIT

3. 发明专利

JP2014098473A Pressure ring mounted piston 审中-公开
标题翻译：压力环安装活塞
公开(公告)号：JP2014098473A
公开(公告)日：2014-05-29
申请号：JP2012251958
申请日：2012-11-16
申请人： Toyota Central R&D Labs Inc , 株式会社豊田中央研究所 , Toyota Industries Corp , 株式会社豊田自動織機
发明人： INAGAKI HIDETO , YAMADA TOMOHISA , MITA SHUZO , NOZAWA MIGI , YAMASHITA KENTARO
IPC分类号： F16J9/20 , F02F3/00 , F02F5/00 , F16J9/00 , F16J9/26
摘要： PROBLEM TO BE SOLVED: To make a second pressure ring of a pressure ring mounted piston easily separate away from a ring groove face to reduce oil consumption.SOLUTION: A pressure ring mounted piston 18 includes a top ring 34 which is a first pressure ring provided in a first ring groove 40 to be movable in a piston movement direction, and a second ring 36 which is a second pressure ring provided in a second ring groove 42 to be movable in the piston movement direction. A second end face of the second ring 36 is an end face of one side in an axial direction and faces to a crank chamber, and an opposite formation face is a ring groove face of the second ring groove 42 facing to the second end face. The opposite formation face has a convex or concave portion greater than the maximum depth of the surface roughness of the opposite formation face.
摘要翻译：要解决的问题：为了使压力环安装的活塞的第二压力环容易地与环槽面分离，以减少油耗。解决方案：压力环安装的活塞18包括顶环34，其是提供的第一压力环在能够沿活塞运动方向移动的第一环形槽40中，以及设置在第二环形槽42中的第二压力环的第二环36，以能够沿活塞运动方向移动。第二环36的第二端面是轴向一侧的端面并且面向曲轴室，相对的形成面是第二环形槽42的面向第二端面的环形槽面。相对的形成面具有大于相对形成面的表面粗糙度的最大深度的凸部或凹部。

4. 发明专利

JP2010229858A Piston, piston ring, and reciprocating device 审中-公开
标题翻译：活塞，活塞环和复合装置
公开(公告)号：JP2010229858A
公开(公告)日：2010-10-14
申请号：JP2009076764
申请日：2009-03-26
申请人： Toyota Central R&D Labs Inc , 株式会社豊田中央研究所
发明人： YAMADA TOMOHISA , MITA SHUZO , INAGAKI HIDETO , KATSUMI NORIKAZU , NOZAWA MIGI , NODA TAKU
IPC分类号： F02F3/00 , F02F5/00 , F16J1/08 , F16J9/00
摘要： PROBLEM TO BE SOLVED: To provide a piston capable of suppressing a lubricant from being discharged from a ring groove by a simple structure, a piston ring, and a reciprocating device equipped with at least either of the piston or the piston ring, and reducing the amount of the consumption of the lubricant.
SOLUTION: In the piston 10, three ring grooves 50 opened to an outer peripheral side and to which the piston rings 30, 32, 33 are independently installed, and an oil collecting groove 52 opened to a part on a crown face 10A side in each ring groove 50 are formed.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供能够通过简单的结构，能够抑制润滑剂从环槽排出的活塞，活塞环和配备有活塞或活塞环中的至少一个的往复运动装置，并减少润滑剂的消耗量。解决方案：在活塞10中，向外周侧开放并且活塞环30,32,33独立地安装的三个环形槽50和向冠面10A上的部分开口的集油槽52 形成每个环形槽50中的一侧。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2014101893A Pressure ring attachment piston 审中-公开
标题翻译：压力连接活塞
公开(公告)号：JP2014101893A
公开(公告)日：2014-06-05
申请号：JP2012252017
申请日：2012-11-16
申请人： Toyota Central R&D Labs Inc , 株式会社豊田中央研究所
发明人： INAGAKI HIDETO , YAMADA TOMOHISA , KATSUMI NORIKAZU , NOZAWA MIGI
IPC分类号： F16J9/00 , F02F3/00 , F02F5/00
摘要： PROBLEM TO BE SOLVED: To reduce oil consumption by easily separating a pressure ring from a ring groove surface in a pressure ring attachment piston.SOLUTION: A pressure ring attachment piston 18 comprises: a top ring 34 as a first pressure ring arranged to be movable in a piston movement direction in a first ring groove 40; and a second ring 36 as a second pressure ring arranged to be movable in the piston movement direction in a second ring groove 42. At least one of a first end surface in an axial direction of the top ring 34, a first ring groove surface of the first ring groove 40 opposed to the first end surface, a second end surface in the axial direction of the second ring 36, and a second ring groove surface of the second ring groove 42 opposed to the second end surface is an oppositely formed surface, and the oppositely formed surface has a recession or a protrusion in a dimension larger than the maximum depth of the surface roughness.
摘要翻译：要解决的问题：通过在压力环安装活塞中容易地将压力环与环槽表面分离来减少油耗。解决方案：压力环附接活塞18包括：作为第一压力环的顶环34，其布置成可移动在第一环槽40中的活塞移动方向上; 以及作为第二压力环的第二环36，其布置成在第二环形槽42中沿活塞运动方向可移动。顶环34的轴向的第一端面中的至少一个，第一环表面与第一端面相对的第一环形槽40，第二环36的轴向的第二端面和与第二端面相对的第二环形槽42的第二环状槽表面是相对形成的表面，并且相对形成的表面具有比表面粗糙度的最大深度大的尺寸的凹陷或突起。

6. 发明专利

JP2011117459A Piston 有权
标题翻译：活塞
公开(公告)号：JP2011117459A
公开(公告)日：2011-06-16
申请号：JP2011055364
申请日：2011-03-14
申请人： Toyota Central R&D Labs Inc , Toyota Industries Corp , 株式会社豊田中央研究所 , 株式会社豊田自動織機
发明人： AKIMOTO KENTA , TAKEUCHI HIDETAKA , HITOSUGI YOSHINOBU , NODA TAKU , NOZAWA MIGI , YAMADA TOMOHISA
IPC分类号： F02F3/22 , F01P3/10
摘要： PROBLEM TO BE SOLVED: To provide a piston of an internal combustion engine, which prevents the oil flowing reversely in a cooling cavity and the oil supplied newly into the cooling cavity from interfering with each other. SOLUTION: The piston 7 is formed with the cooling cavity 10 therein in which the oil circulates for cooling the piston 7. Two curved guides 21, 21 of a plate shape are provided in a supply part 12 of the cooling cavity 10, extending from an opening 12a to the inside of a circulation part 11 through the supply part 12. An introduction path 22 is composed between the two guides 21, 21. Discharge paths 23, 23 are composed outside the guides 21, 21, respectively. The inlet 22a of the introduction path 22 and the outlets 23b of the discharge paths 23 are flushed each other and compose the opening 12a of the supply part 12. The outlet 22b of the introduction path 22 is situated inside the circulation part 11 and the inlets 23a of the discharge paths 23 are formed on the bottom 11a of the circulation part 11. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种内燃机的活塞，其防止油在冷却腔中反向流动，并且新进入冷却腔的油彼此干涉。解决方案：活塞7在其中形成有冷却腔10，其中油循环用于冷却活塞7.板形的两个弯曲导向件21,21设置在冷却腔10的供应部分12中，从开口12a延伸到循环部分11的内部，通过供给部12.引导路径22由两个引导件21,21构成。排出路径23,23分别构成在引导件21,21的外侧。引入路径22的入口22a和排出路径23的出口23b相互冲洗，构成供给部12的开口12a。导入路径22的出口22b位于循环部11的内部，排出路径23的23a形成在循环部11的底部11a上。版权所有（C）2011，JPO＆INPIT

7. 发明专利

JP2006090158A Piston for internal combustion engine 有权
标题翻译：内燃机活塞
公开(公告)号：JP2006090158A
公开(公告)日：2006-04-06
申请号：JP2004274036
申请日：2004-09-21
申请人： Toyota Central Res & Dev Lab Inc , Toyota Industries Corp , 株式会社豊田中央研究所 , 株式会社豊田自動織機
发明人： AKIMOTO KENTA , TAKEUCHI HIDETAKA , MINAMI MASATAKA , NODA TAKU , NOZAWA MIGI , YAMADA TOMOHISA
IPC分类号： F02F3/22 , F16J1/08
CPC分类号： B22C9/105 , F02F3/22
摘要： PROBLEM TO BE SOLVED: To enhance cooling efficiency by smoothly discharging cooling oil flowing through main passages positioned in a plane orthogonal to the shaft direction of a piston, from outlet openings positioned under the main passages.
SOLUTION: A cooling passage 19 is arranged in a head part of the piston 13, and has an inlet part 20 formed in a substantially annular ring shape, and passages 21 and 22 of two systems separated so as to be capable of mutually guiding the cooling oil in the inverse direction from the inlet part 20. The passages 21 and 22 have the main passages 21a and 22a positioned on the plane orthogonal to the shaft direction of the piston 13. The main passages 21a dnf 22a and the outlet openings 21c and 22c of the passages are connected by inclined parts 21b and 22b formed so as to incline to the plane orthogonal to the shaft direction of the piston 13 and a plane passing through the axis of the piston 13. The inclined parts 21b and 22b mutually incline in the inverse direction, and are formed so as to cross in its intermediate part in a state viewed from the radial direction of the piston 13.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：通过从位于主通道下方的出口开始平滑地排出流过位于与活塞的轴向正交的平面中的主通道的冷却油，从而提高冷却效率。解决方案：冷却通道19布置在活塞13的头部中，并且具有形成为大致环形的入口部分20，并且两个系统的通道21和22被分离以能够相互从入口部分20沿相反方向引导冷却油。通道21和22具有位于与活塞13的轴向正交的平面上的主通道21a和22a。主通道21adnf 22a和出口 21c和22c通过倾斜部21b和22b连接，倾斜部21b和22b形成为与活塞13的轴向正交的平面和穿过活塞13的轴线的平面倾斜。倾斜部21b和22b相互形成为从活塞13的径向观察的状态在其中间部分交叉。（C）2006，JPO＆NCIPI

8. 发明专利

JP2006200479A Piston of internal combustion engine 审中-公开
标题翻译：内燃机活塞
公开(公告)号：JP2006200479A
公开(公告)日：2006-08-03
申请号：JP2005014692
申请日：2005-01-21
申请人： Toyota Central Res & Dev Lab Inc , Toyota Industries Corp , 株式会社豊田中央研究所 , 株式会社豊田自動織機
发明人： AKIMOTO KENTA , TAKEUCHI HIDETAKA , HITOSUGI YOSHINOBU , NODA TAKU , NOZAWA MIGI , YAMADA TOMOHISA
IPC分类号： F02F3/22 , F16J1/09
摘要： PROBLEM TO BE SOLVED: To provide a piston of an internal combustion engine, in which oil flowing back in a cooling cavity and oil supplied newly to the cooling cavity do not interfere with each other.
SOLUTION: The cooling cavity 10 with oil for cooling the piston 7 circulated is formed in the piston 7. Two curved platelike guides 21, 21 extending from an opening 12a to the inside of a circulating part 11 through the inside of a supply part 12 are arranged in the supply part 12 of the cooling cavity 10. An introducing path 22 is formed between these two guides 21, 21. Discharge paths 23, 23 are formed respectively on the outsides of the guides 21, 21. The inlet 22a of the introducing path 22 and the outlet 23b of the discharge path 23 are flushed with each other, and form the opening 12a of the supply part 12. The outlet 22b of the introducing path 22 is positioned in the inside of the circulating part 11, and the inlet 23a of the discharge path 23 is formed in the bottom part 11a of the circulating part 11.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种内燃机的活塞，其中在冷却腔中流回的油和新加入到冷却腔的油不会彼此干涉。解决方案：具有循环的活塞7的用于冷却活塞7的油的冷却腔10形成在活塞7中。两个弯曲的板状引导件21,21从开口12a延伸到循环部分11的内部，部分12布置在冷却腔10的供应部分12中。在这两个引导件21,21之间形成有引导路径22.排出路径23,23分别形成在引导件21,21的外侧上。入口22a 排出路径23的出口23b相互冲洗，形成供给部12的开口12a。导入路径22的出口22b位于循环部11的内部，并且排出路径23的入口23a形成在循环部11的底部11a中。版权所有（C）2006，JPO＆NCIPI

9. 发明专利

JP2006090159A Piston for internal combustion engine 有权
标题翻译：内燃机活塞
公开(公告)号：JP2006090159A
公开(公告)日：2006-04-06
申请号：JP2004274037
申请日：2004-09-21
申请人： Toyota Central Res & Dev Lab Inc , Toyota Industries Corp , 株式会社豊田中央研究所 , 株式会社豊田自動織機
发明人： AKIMOTO KENTA , TAKEUCHI HIDETAKA , MINAMI MASATAKA , NODA TAKU , NOZAWA MIGI , YAMADA TOMOHISA
IPC分类号： F02F3/22 , F01P3/08 , F02F3/00 , F16J1/09
CPC分类号： B22C9/10 , F02F3/22
摘要： PROBLEM TO BE SOLVED: To provide a piston for an internal combustion engine easy in manufacture, and capable of enhancing cooling efficiency, by avoiding a collision (mutual interference) of cooling oil discharged via passages of two systems in the vicinity of an outlet part.
SOLUTION: A cooling passage 15 is arranged in a head part of a piston 11, and has an inlet part formed in a substantially annular ring shape, the passages 17a and 17b of two systems separated so as to be capable of mutually guiding the cooling oil in the inverse direction from the inlet part 16, and the outlet part 18. The passages 17a and 17b are formed so as to be positioned on a plane orthogonal to the shaft direction of the piston 11, and the inlet part 16 and the outlet part 18 are formed so as to extend in parallel to the shaft direction of the piston 11. Both passages 17a and 17b merge in the outlet part 18, and outlet side end parts 17ae and 17be of the respective passages 17a and 17b are formed so as to be offset in the radial direction of the piston 11.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供易于制造并且能够提高冷却效率的内燃机的活塞，通过避免通过两个系统的通道排出的冷却油的碰撞（相互干扰）出口部分。解决方案：冷却通道15布置在活塞11的头部中，并且具有形成为大致环形环的入口部分，两个系统的通道17a和17b被分离以能够相互引导来自入口部16的反向的冷却油和出口部18.通路17a，17b形成为位于与活塞11的轴方向正交的平面上，并且入口部16和出口部分18形成为平行于活塞11的轴向延伸。两个通道17a和17b在出口部分18中合并，并且形成各个通道17a和17b的出口侧端部17ae和17be 以便在活塞11的径向方向上偏移。（C）2006年，JPO＆NCIPI

10. 发明专利

JP2005307772A Piston cooling device 有权
标题翻译：活塞式冷却装置
公开(公告)号：JP2005307772A
公开(公告)日：2005-11-04
申请号：JP2004122730
申请日：2004-04-19
申请人： Toyota Central Res & Dev Lab Inc , Toyota Industries Corp , 株式会社豊田中央研究所 , 株式会社豊田自動織機
发明人： AKIMOTO KENTA , TAKEUCHI HIDETAKA , MINAMI MASATAKA , NODA TAKU , NOZAWA MIGI
IPC分类号： F02F3/22 , F01P3/10 , F16J1/09
CPC分类号： F02F3/22
摘要： PROBLEM TO BE SOLVED: To provide a piston cooling device capable of improving cooling efficiency.
SOLUTION: Oil S supplied in an annular cooling passage 4 by injection to an oil supply port is discharged from an oil discharging port 6 through the cooling passage 4 so as to cool a piston 2. Oil once discharged from the inside of the cooling passage 4 flows backward in the cooling passage 4 from the oil discharging port 6 with a descent of the piston 2 or the like and along a ceiling surface 4a to spread in the cooling passage 4. By shutting off the oil R with upright surfaces 9a, 10a of shut-off wall members 9, 10, hence, backflow of the oil R in the cooling passage 4 can be prevented.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够提高冷却效率的活塞冷却装置。解决方案：通过喷射到供油口的环形冷却通道4中供给的油S通过冷却通道4从排油口6排出，以便冷却活塞2.一旦从内部排出冷却通道4在冷却通道4中从活塞2等的下降沿着排气口6向后流动并且沿着顶面4a延伸以在冷却通道4中扩展。通过用直立表面9a关闭油R ，10a的切断壁构件9,10，因此可以防止冷却通道4中的油R的回流。版权所有（C）2006，JPO＆NCIPI

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