公开(公告)号：EP1679434A1

公开(公告)日：2006-07-12

申请号：EP04792494.9

申请日：2004-10-15

申请人： Kabushiki Kaisha Riken

发明人： OOGAKE, Kazuhiko, Kabushiki Kaisha Riken ,  YAMADA, Masaki, Kabushiki Kaisha Riken ,  SATOU, Kazuki, Kabushiki Kaisha Riken

IPC分类号： F02F1/18

CPC分类号： F02F1/004 ,  F02F1/16 ,  F02F1/166 ,  F02F2001/006

摘要： An internal combustion engine includes: a cylinder block having one or more cylinders, a cylinder liner in a tubular shape disposed inside the cylinder; a piston reciprocating inside the cylinder liner and having a top land portion formed of an outer periphery of the piston sandwiched between a piston head and an uppermost ring groove; and a liner installation ring forming, inside the cylinder, a circular step portion protruding toward the inner periphery of the cylinder liner. The liner installation ring is disposed in the cylinder block or the cylinder liner in such a manner that the bottom face of the liner installation ring face to the uppermost portion of the cylinder liner. The liner installation ring is disposed at a position in accordance with the upper end position of the top land portion when the piston reaches a top dead center. The liner installation ring is set to protrude from the inner periphery of the cylinder liner in an inward direction at a length of 0.05 mm or more to 0.5 mm less.

摘要翻译： 内燃机包括：具有一个或多个气缸的气缸体，设置在气缸内的管状的气缸套; 活塞在气缸套内往复运动，并具有由夹在活塞头和最上环槽之间的活塞的外周形成的顶部接合部; 以及在所述气缸内形成朝向所述气缸套的内周突出的圆形台阶部的衬套安装环。 衬套安装环以这样的方式设置在气缸体或气缸套中，使得衬套安装环的底面面向气缸套的最上部。 当活塞到达上止点时，衬套安装环设置在与顶部陆部的上端位置相对应的位置。 衬套安装环设置成从缸套的内周向内方向突出，长度为0.05mm以上至0.5mm以下。