公开(公告)号：US06510821B2

公开(公告)日：2003-01-28

申请号：US09906674

申请日：2001-07-18

申请人： Hiroya Fujimoto ,  Katsuya Moteki

发明人： Hiroya Fujimoto ,  Katsuya Moteki

IPC分类号： F02B7504

CPC分类号： F02B75/048 ,  F02B75/045 ,  F02F2007/0056

摘要： An internal combustion engine is constructed to include a variable compression ratio mechanism. The mechanism has the following structure. An upper link has one end pivotally connected to a piston pin of a piston of the engine. A lower link is pivotally disposed on a crank pin of a crankshaft of the engine and has one part pivotally connected to the other end of the upper link. A control shaft extends substantially in parallel with the crankshaft. A control link has an end pivotally connected to the other part of the lower link. The other end of the control link is connected to the control shaft through an eccentric bearing structure, so that rotation of the control shaft about its axis induces a pivoting of the lower link about the crank pin varying the stroke of the piston.

公开(公告)号：US06390035B2

公开(公告)日：2002-05-21

申请号：US09784137

申请日：2001-02-16

申请人： Katsuya Moteki ,  Takayuki Arai ,  Hiroya Fujimoto

发明人： Katsuya Moteki ,  Takayuki Arai ,  Hiroya Fujimoto

IPC分类号： F02B7532

CPC分类号： F02B75/048 ,  F02B75/045

摘要： A variable compression-ratio, multiple-link type reciprocating internal combustion engine has at least three links, namely an upper link, a lower link and a third link, for each engine cylinder. The upper link is connected to a piston pin, the lower link connects the upper link to a crank pin, and the third link is pivoted at one end to a body of the engine and connected at its other end to either of the upper and lower links to permit oscillating motion of the third link on the engine body. The upper link, the lower link, and the third link are dimensioned and laid out, so that the amplitude of a second-order vibration component of a vibrating system of reciprocating motion of the piston, synchronizing rotary motion of the crankshaft, is suppressed and reduced to below a predetermined threshold value, while realizing the same piston stroke and engine-cylinder height as a single-link type reciprocating internal combustion engine in which a piston pin and a crank pin are connected to each other by a single link.

摘要翻译： 对于每个发动机气缸，可变压缩比多连杆式往复运动内燃机具有至少三个连杆，即上连杆，下连杆和第三连杆。 上连杆连接到活塞销，下连杆将上连杆连接到曲柄销，第三连杆在一端枢转到发动机主体，并在另一端连接到上下两者之一 链接以允许发动机主体上的第三连杆的摆动运动。 上连杆，下连杆和第三连杆的尺寸和布置，使得活塞的往复运动的振动系统的二阶振动分量的振幅同步曲轴的旋转运动被抑制， 降低到低于预定阈值，同时实现与单链式往复式内燃机相同的活塞冲程和发动机缸高度，其中活塞销和曲柄销通过单个连杆彼此连接。

公开(公告)号：US06729273B2

公开(公告)日：2004-05-04

申请号：US10059012

申请日：2002-01-30

申请人： Shunichi Aoyama ,  Katsuya Moteki ,  Hiroya Fujimoto

发明人： Shunichi Aoyama ,  Katsuya Moteki ,  Hiroya Fujimoto

IPC分类号： F02D1500

CPC分类号： F02B75/22 ,  F01B9/02 ,  F02B75/048

摘要： In a piston actuation system of a V-type internal combustion engine with two cylinder banks having at least one pair of cylinders, a piston pin, an upper link, a lower link, and a control link are mechanically linked to each other for each cylinder bank. When changing a compression ratio of the engine, ends of the control links of the two cylinder banks are moved in synchronism. The lower links of the two cylinder banks are coaxially rotatably fitted on the outer periphery of the same crankpin whose axis is eccentric to the axis of the crankshaft.

摘要翻译： 在具有两个气缸组的V型内燃机的活塞致动系统中，具有至少一对气缸，活塞销，上连杆，下连杆和控制连杆在每个气缸 银行。 当改变发动机的压缩比时，两个气缸组的控制连杆的端部同步地移动。 两个气缸组的下部连杆同轴地可旋转地安装在相同的曲柄销的外周上，其轴线偏心于曲轴的轴线。

公开(公告)号：US06240828B1

公开(公告)日：2001-06-05

申请号：US09288715

申请日：1999-04-09

申请人： Hiroya Fujimoto

发明人： Hiroya Fujimoto

IPC分类号： F16J104

CPC分类号： F02F3/08 ,  F02F3/02 ,  F05C2251/042

摘要： A piston of an internal combustion engine, comprises a skirt portion in sliding-contact with a cylinder wall, an inner crown-plus-boss portion having a crown portion and piston-pin boss portions, and a stay portion interconnecting the skirt portion and the inner crown-plus-boss portion at a lower portion of the piston. Also provided is an annular partition groove through which a rim of the skirt portion and the inner crown-plus-boss portion are partitioned all around the circumference of the upper portion of the piston. A thermal-expansion absorption ring is tightly fitted into the annular partition groove in a gas tight-fashion. The top face of the inner crown-plus-boss portion, the flat face of the rim of the skirt portion, and the top wall of the thermal-expansion absorption ring serve as a piston crown.

摘要翻译： 内燃机的活塞包括与气缸壁滑动接触的裙部，具有冠部和活塞销凸起部的内冠加上凸台部，以及将裙部和 在活塞下部的内冠凸台部分。 还设置有环形分隔槽，裙部的边缘和内冠冠部凸起部分通过该环形分隔槽围绕活塞上部的圆周分隔开。 热膨胀吸收环以气密方式紧密地装配到环形分隔槽中。 内冠凸台部分的顶面，裙部边缘的平坦面和热膨胀吸收环的顶壁用作活塞冠。

公开(公告)号：US06152090A

公开(公告)日：2000-11-28

申请号：US93933

申请日：1998-06-09

申请人： Hiroya Fujimoto ,  Toshimitsu Matsuoka

发明人： Hiroya Fujimoto ,  Toshimitsu Matsuoka

IPC分类号： F01M1/06 ,  F02F1/00 ,  F02F1/10 ,  F02B75/18

CPC分类号： F02F1/10 ,  F02F1/108 ,  F02F2001/104

摘要： In an engine cylinder block, a water jacket base wall is formed between a lower end of a water jacket outer wall and an intermediate part of a cylinder wall. A head bolt boss is formed in the water jacket outer wall for screwing in a head bolt. A thin part is formed in an intermediate part of the water jacket base wall. The rigidity of the water jacket base wall thereby falls, a force in the axial direction of the head bolt due to tightening of the head bolt or input of combustion pressure is absorbed by deformation of the water jacket base wall, and deformation of the cylinder wall is suppressed.

摘要翻译： 在发动机气缸体中，在水套外壁的下端和气缸壁的中间部分之间形成水套底壁。 在水套外壁上形成头螺栓凸台，用于旋入头螺栓。 薄壁部分形成在水套底壁的中间部分。 水套底壁的刚性因此下降，由于头螺栓的紧固或燃烧压力的输入引起的头螺栓的轴向方向的力被水套底壁的变形吸收，气缸壁的变形 被压制

公开(公告)号：US5768949A

公开(公告)日：1998-06-23

申请号：US654963

申请日：1996-05-29

申请人： Hiroya Fujimoto ,  Takaya Fujita

发明人： Hiroya Fujimoto ,  Takaya Fujita

IPC分类号： F16F15/30 ,  F16F15/10 ,  G05G1/00

CPC分类号： F16F15/302 ,  Y10T29/49231 ,  Y10T74/2132

摘要： An integral cast flywheel comprises a circular center flange portion, an annular mass portion concentric with the center flange portion, and an annular plate portion concentrically interposed between the center flange portion and the mass portion. Between the plate portion and the mass portion, there is defined an annular cavity which has an annular opening directed radially inward. The annular cavity is concentric with the center flange portion.

摘要翻译： 整体铸造飞轮包括圆形中心凸缘部分，与中心凸缘部分同心的环形质量部分，以及同心地插入在中心凸缘部分和质量部分之间的环形板部分。 在板部分和质量部分之间，限定有环形空腔，其具有径向向内指向的环形开口。 环形空腔与中心凸缘部分同心。

公开(公告)号：US06561142B2

公开(公告)日：2003-05-13

申请号：US10006622

申请日：2001-12-10

申请人： Katsuya Moteki ,  Shunichi Aoyama ,  Ryousuke Hiyoshi ,  Hiroya Fujimoto

发明人： Katsuya Moteki ,  Shunichi Aoyama ,  Ryousuke Hiyoshi ,  Hiroya Fujimoto

IPC分类号： F01B3014

CPC分类号： F02B41/04 ,  F01B9/02 ,  F02B75/048

摘要： A paired counterweights of a crankshaft have projected inner surfaces which protrude toward each other defining a given space therebetween. A plurality of links are arranged to convert a reciprocating motion of a piston to a rotational motion of the crankshaft. One of the links is pivotally connected to other links through link connecting portions and swingably disposed on a crank pin of the crankshaft so that upon rotation of the crankshaft, a peripheral portion of the link passes through the given space. At least one of the link connecting portions is placed within an imaginary circle which would be described by a radially innermost part of the projected inner surfaces of the paired counterweights when the paired counterweights turn about an axis of the crank pin.

公开(公告)号：US06505582B2

公开(公告)日：2003-01-14

申请号：US09899038

申请日：2001-07-06

申请人： Katsuya Moteki ,  Hiroya Fujimoto ,  Shunichi Aoyama

发明人： Katsuya Moteki ,  Hiroya Fujimoto ,  Shunichi Aoyama

IPC分类号： F02B7504

CPC分类号： F02B75/048 ,  F02B75/045

摘要： A variable compression ratio mechanism of a reciprocating engine includes at least an upper link connected at one end to a piston pin and a lower link connecting the other end of the upper link to a crankpin. At top dead center, when hypothetical connecting points between the upper and lower links are able to be supposed on both sides of the line segment connecting the piston-pin center and the crankpin center, and the first one of the connecting points has a smaller inclination angle, measured in the same direction as a direction of rotation of the crankshaft, from the axial line of reciprocating motion of the piston-pin center and to a line segment connecting the piston-pin center and the first connecting point; as compared to the second connecting point, the first connecting point is selected as the actual connecting point.

摘要翻译： 往复式发动机的可变压缩比机构包括至少一个连接到活塞销的上连杆和将上连杆的另一端连接到曲轴销的下连杆。 在上止点处，当连接活塞销中心和曲柄销中心的线段的两侧能够假设上下连杆之间的假想连接点，并且第一连接点具有较小的倾斜度 与曲轴的旋转方向相同的方向从活塞销中心的往复运动轴线到与活塞销中心与第一连接点连接的线段的角度; 与第二连接点相比，选择第一连接点作为实际连接点。