公开(公告)号：US08381696B2

公开(公告)日：2013-02-26

申请号：US12680960

申请日：2008-10-02

申请人： Mitsuru Urabe ,  Hirokazu Murata

发明人： Mitsuru Urabe ,  Hirokazu Murata

IPC分类号： F16J10/04

CPC分类号： F16J10/04 ,  F02F1/20

摘要： A cylinder realizing reduced reciprocation friction between a piston ring and a bore surface of the cylinder in a region where the piston ring slides. The cylinder in which a piston slides on a bore surface of the cylinder. A plurality of recesses is formed in a stroke center region in the bore surface of the cylinder. The stroke center region is a region between an under face position of a ring groove for a bottom piston ring at a top dead center of the piston and a top face position of a ring groove for a top piston ring at a bottom dead center of the piston. The total of areas of all of the recesses is in the range of 1% to 80% when an area of the stroke center region is 100%, and the recesses are not formed in a region other than the stroke center region of the bore surface of the cylinder.

摘要翻译： 缸体在活塞环滑动的区域中实现活塞环和气缸的孔表面之间的往复摩擦。 活塞在气缸的孔表面上滑动的气缸。 多个凹部形成在气缸的孔表面中的行程中心区域中。 行程中心区域是在活塞的上止点处的底部活塞环的环槽的下表面位置与位于活塞的上止点处的顶部活塞环的环槽的顶面位置之间的区域 活塞。 当行程中心区域的面积为100％时，所有凹部的总面积为1％至80％的范围，并且凹部不形成在除了孔表面的行程中心区域以外的区域 的气缸。

公开(公告)号：US20100288222A1

公开(公告)日：2010-11-18

申请号：US12680960

申请日：2008-10-02

申请人： Mitsuru Urabe ,  Hirokazu Murata

发明人： Mitsuru Urabe ,  Hirokazu Murata

IPC分类号： F02F1/00 ,  F16J10/00

CPC分类号： F16J10/04 ,  F02F1/20

摘要： A cylinder realizing reduced reciprocation friction between a piston ring and a bore surface of the cylinder in a region where the piston ring slides. The cylinder in which a piston slides on a bore surface of the cylinder. A plurality of recesses is formed in a stroke center region in the bore surface of the cylinder. The stroke center region is a region between an under face position of a ring groove for a bottom piston ring at a top dead center of the piston and a top face position of a ring groove for a top piston ring at a bottom dead center of the piston. The total of areas of all of the recesses is in the range of 1% to 80% when an area of the stroke center region is 100%, and the recesses are not formed in a region other than the stroke center region of the bore surface of the cylinder.

摘要翻译： 缸体在活塞环滑动的区域中实现活塞环和气缸的孔表面之间的往复摩擦。 活塞在气缸的孔表面上滑动的气缸。 多个凹部形成在气缸的孔表面中的行程中心区域中。 行程中心区域是在活塞的上止点处的底部活塞环的环槽的下表面位置与位于活塞的上止点处的顶部活塞环的环槽的顶面位置之间的区域 活塞。 当行程中心区域的面积为100％时，所有凹部的总面积为1％至80％的范围，并且凹部不形成在除了孔表面的行程中心区域以外的区域 的气缸。