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：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：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。

公开(公告)号：US07669559B2

公开(公告)日：2010-03-02

申请号：US11907194

申请日：2007-10-10

申请人： Shunichi Aoyama ,  Katsuya Moteki ,  Kenshi Ushijima ,  Shinichi Takemura ,  Hideaki Mizuno

发明人： Shunichi Aoyama ,  Katsuya Moteki ,  Kenshi Ushijima ,  Shinichi Takemura ,  Hideaki Mizuno

IPC分类号： F02B75/04

CPC分类号： F02D15/02 ,  F02B75/048 ,  F02D13/023 ,  F02D13/0269 ,  F05C2251/048 ,  Y02T10/142

摘要： In a reciprocating piston engine employing a variable compression ratio mechanism linked to a reciprocating piston for variably adjusting a geometrical compression ratio by varying at least a piston top dead center position, so that the top dead center position obtained at a low geometrical compression ratio is set to be lower than that at a high geometrical compression ratio, responsively to a controlled variable, a controller is configured to set a target compression ratio to a high value at low engine load operation, and to a relatively low value at high engine load operation. A substantially entire area of a crown of the piston, defining a part of a wall surface of a combustion chamber, is formed of a non-metallic material having a higher heat-insulating and heat-reserving property as compared to a base structural material of each of the combustion chamber and the piston.

摘要翻译： 在往复式活塞式发动机中，采用与往复运动活塞连接的可变压缩比机构，用于通过至少改变活塞上止点位置来可变地调节几何压缩比，使得以低几何压缩比获得的上止点位置被设定 低于高几何压缩比时，响应于受控变量，控制器被配置为在低发动机负载操作时将目标压缩比设定为高值，并且在高发动机负载操作下将目标压缩比设定为相对较低的值。 限定燃烧室的壁面的一部分的活塞的顶部的大致整个区域由具有比基础结构材料更高的绝热和耐热性能的非金属材料形成， 每个燃烧室和活塞。

公开(公告)号：US20070215132A1

公开(公告)日：2007-09-20

申请号：US11717957

申请日：2007-03-14

申请人： Makoto Kobayashi ,  Kenshi Ushijima ,  Katsuya Moteki ,  Hideaki Mizuno

发明人： Makoto Kobayashi ,  Kenshi Ushijima ,  Katsuya Moteki ,  Hideaki Mizuno

IPC分类号： F02B75/04 ,  F02B75/32 ,  F16C7/00

CPC分类号： F02B75/048 ,  F16C9/04 ,  F16C11/045 ,  F16C2360/22

摘要： A piston crank mechanism has an upper link coupled to a piston by a piston pin, a lower link having a crankpin journal, wherein the crankpin journal is coupled to a crankpin of a crankshaft and is coupled to the upper link by an upper pin, and a control link is coupled to an eccentric cam of a control shaft that is supported by an engine block and coupled to a control pin boss by a control pin. The crankpin journal of the lower link is arranged and dimensioned relative to the upper pin such that a projection area defined by projecting the width of the upper pin along a direction line passing through a center of the piston pin and a center of the upper pin does not obscure an area defined by the crankpin during operation of the crankshaft as viewed in an axial direction of the crankpin.

摘要翻译： 活塞曲柄机构具有通过活塞销联接到活塞的上连杆，下连杆具有曲柄销轴颈，其中曲柄销轴颈联接到曲轴的曲柄销并且通过上销联接到上连杆，并且 控制链路联接到控制轴的偏心凸轮，其由发动机缸体支撑并通过控制销耦合到控制销凸台。 下连杆的曲柄销轴颈相对于上销布置和定尺寸，使得通过沿着穿过活塞销的中心的方向线和上销的中心突出上销的宽度而限定的突出区域 在曲柄销的轴向观察时，在曲轴的操作期间不会模糊由曲柄销定义的区域。

公开(公告)号：US06647935B2

公开(公告)日：2003-11-18

申请号：US10170683

申请日：2002-06-14

申请人： Shunichi Aoyama ,  Katsuya Moteki ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

发明人： Shunichi Aoyama ,  Katsuya Moteki ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

IPC分类号： F01L134

CPC分类号： F02F7/0019 ,  F01L1/024 ,  F01L1/34 ,  F01L13/0021 ,  F01L13/0026 ,  F01L2013/0073 ,  F02B75/048 ,  F02B2275/18 ,  F02F2001/245

摘要： In a rockable-cam equipped reciprocating internal combustion engine, a rockable cam is rotatably fitted on the outer periphery of an intake-valve drive shaft that is rotatable in synchronism with rotation of a crankshaft. The rockable cam oscillates within predetermined limits during rotation of the intake-valve drive shaft so as to directly push an intake-valve lifter. As viewed from an axial direction of the crankshaft, an axis of the intake-valve drive shaft is offset from a centerline of the intake-valve stem in a first direction that is normal to both the cylinder centerline and the crankshaft axis and directed from the cylinder centerline to the intake valve side. The crankshaft axis is also offset from the cylinder centerline in the first direction.

公开(公告)号：US06615773B2

公开(公告)日：2003-09-09

申请号：US10077944

申请日：2002-02-20

申请人： Katsuya Moteki ,  Shunichi Aoyama ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

发明人： Katsuya Moteki ,  Shunichi Aoyama ,  Kenshi Ushijima ,  Ryosuke Hiyoshi

IPC分类号： F02D1502

CPC分类号： F02B75/048 ,  F02B75/045

摘要： In an internal combustion engine of variable compression ratio type, a piston control mechanism is employed which comprises a lower link rotatably disposed on a crank pin of a crankshaft of the engine, an upper link having one end pivotally connected to the lower link and the other end pivotally connected to a piston of the engine, a control link having one end pivotally connected to the lower link; and a position changing mechanism which changes a supporting axis about which the other end of the control link turns. When the piston comes up to a top dead center, a compression load is applied to the control link in an axial direction of the control link in accordance with an upward inertial load of the piston.

公开(公告)号：US06561148B2

公开(公告)日：2003-05-13

申请号：US09790723

申请日：2001-02-23

申请人： Katsuya Moteki ,  Shinichi Takemura ,  Yoshiaki Miyazato

发明人： Katsuya Moteki ,  Shinichi Takemura ,  Yoshiaki Miyazato

IPC分类号： F01L1300

CPC分类号： F01L13/0026 ,  F01L13/0021 ,  F01L2105/00

摘要： A swing cam to actuate engine valves is rotatably disposed about a drive shaft. A first eccentric cam is tightly disposed on the drive shaft. A ring-link is rotatably disposed on the first eccentric cam. A second eccentric cam is tightly disposed on a control shaft which rotates to a given angular position in accordance with an operation condition of an associated internal combustion engine. A rocker arm is rotatably disposed on the second eccentric cam. A rod-link extends between the rocker arm and the swing cam. A first connecting pin pivotally connects a first arm portion of the rocker arm with the ring-link. A second connecting pin pivotally connects a second arm portion of the rocker arm with an end of the rod-link. A third connecting pin pivotally connects the other end of the rod-link with the swing cam. The first connecting pin is fixed to either one of the first arm portion of the rocker arm and the ring-link.