公开(公告)号：US06536400B1

公开(公告)日：2003-03-25

申请号：US09707951

申请日：2000-11-08

申请人： Nobuaki Inumaru ,  Yasuo Shimura

发明人： Nobuaki Inumaru ,  Yasuo Shimura

IPC分类号： F01M116

CPC分类号： F01M1/16 ,  F01M1/08 ,  Y10T137/2592

摘要： A relief valve is interposed in an oil supply passage, and the relief valve internally includes a bottom passage for supplying oil from one oil supply passage to another oil supply passage. Since any branched oil passage for a relief valve is not required to be provided, it is possible to reduce the machining steps and machining cost. Further, since a space for disposing a branched oil passage is not required and the increase in space for disposing the relief valve can be reduced, the engine can be miniaturized.

摘要翻译： 安全阀设置在供油通道中，安全阀内部包括用于将油从一个供油通道供给到另一个供油通道的底部通道。 由于不需要设置用于安全阀的任何分支油路，因此可以减少加工步骤和加工成本。 此外，由于不需要用于设置分支油路的空间，并且可以减小用于设置安全阀的空间的增加，所以可以使发动机小型化。

公开(公告)号：US06205971B1

公开(公告)日：2001-03-27

申请号：US09393190

申请日：1999-09-10

申请人： Nobuaki Inumaru ,  Kouichi Tsutsumi ,  Yasuo Shimura ,  Osamu Kudou

发明人： Nobuaki Inumaru ,  Kouichi Tsutsumi ,  Yasuo Shimura ,  Osamu Kudou

IPC分类号： F01M100

CPC分类号： F01P3/08 ,  F02B61/02 ,  F02B75/16 ,  F02B2075/027

摘要： A crankshaft rotation structure for a four cycle engine has a radial ball bearing fitted into a first main bearing section of a crankcase and a radial roller bearing fitted into a second main bearing section of the crankcase. The crankshaft is rotatably supported by the radial ball bearing and radial roller bearing. Furthermore, an oil jet nozzle for cooling a piston is provided in the second main bearing section. The diameter of the shafts for attachment of the bearings can be made the same, even if the outer diameter of the radial roller bearing is decreased compared to the outer diameter of the radial ball bearing. Accordingly, even if the oil jet nozzle is provided in the second main bearing section into which the radial roller bearing is fitted, the distance from the crankshaft center to the attachment position of the oil jet can be decreased and the engine itself can be reduced in size.

摘要翻译： 用于四冲程发动机的曲轴旋转结构具有装配到曲轴箱的第一主轴承部分和装配到曲轴箱的第二主轴承部分中的径向滚柱轴承的径向球轴承。 曲轴由径向球轴承和径向滚子轴承可转动地支撑。 此外，用于冷却活塞的喷油嘴设置在第二主轴承部分中。 即使径向滚子轴承的外径与径向球轴承的外径相比减小，用于安装轴承的轴的直径也可以相同。 因此，即使将喷油嘴设置在配合有径向滚柱轴承的第二主轴承部中，可以减少从曲轴中心到喷油头的安装位置的距离，并且可以减小发动机本身 尺寸。

公开(公告)号：US06202621B1

公开(公告)日：2001-03-20

申请号：US09392480

申请日：1999-09-09

申请人： Nobuaki Inumaru ,  Kouichi Tsutsumi ,  Yasuo Shimura ,  Osamu Kudou

发明人： Nobuaki Inumaru ,  Kouichi Tsutsumi ,  Yasuo Shimura ,  Osamu Kudou

IPC分类号： F01M102

CPC分类号： F01M1/02 ,  F01M1/06 ,  F01M2001/123 ,  F01M2001/126 ,  F02B61/02 ,  F02B75/16 ,  F02B2075/027

摘要： An oil sump for lubricating oil is provided at a lower part of a crank chamber of a dry sump-type four-cycle engine. A reed valve is provided at an outlet of the oil sump which opens when pressure in the crank chamber is high. Furthermore, an oil passage slopes upwards from the outlet of the oil sump, with an outlet of the oil passage being provided above an oil surface level of oil accumulated within the engine. Oil from the outlet of the oil passage is smoothly discharged from the outlet of the oil passage without being discharged into the collected oil. Furthermore, oil mixed with air within the crank chamber is not directly mixed into the collected oil and oil oxidation is therefore prevented. Since there is no direct contact with high-temperature blow-by gas, etc., oil deterioration is suppressed.

摘要翻译： 用于润滑油的油底壳设置在干式四缸四冲程发动机的曲柄室的下部。 在油槽的出口处设置有簧片阀，当曲柄室中的压力高时，该阀开启。 此外，油路从油底壳的出口向上倾斜，油路的出口设置在积聚在发动机内的油的油表面上方。 油路出口的油从油路的出口顺畅地排出，不会排出到收集的油中。 此外，与曲轴室内的空气混合的油不直接混合到收集的油中，因此防止了油的氧化。 由于与高温窜气等不直接接触，因此抑制油劣化。

公开(公告)号：US06343584B1

公开(公告)日：2002-02-05

申请号：US09539714

申请日：2000-03-31

申请人： Osamu Kudou ,  Nobuaki Inumaru ,  Satoshi Shimashita ,  Kouichi Tsutsumi ,  Yoshimi Yamaguchi ,  Hiroshi Yamaura

发明人： Osamu Kudou ,  Nobuaki Inumaru ,  Satoshi Shimashita ,  Kouichi Tsutsumi ,  Yoshimi Yamaguchi ,  Hiroshi Yamaura

IPC分类号： F01M102

CPC分类号： F01M1/04 ,  F01M1/12 ,  F01M11/02 ,  F02B61/02 ,  F02B75/16 ,  F02B2075/027 ,  F02F2001/245

摘要： A lubrication system for an engine includes an oil discharge port in a lower section of a crankcase. A crankshaft, with a crank web attached thereto, rotates in a rotation direction within the crankcase. A first distance is formed between the crank web and a first inner surface of the crankcase, downstream of the oil discharge port. A second distance is formed between the crank web and a second inner surface of the crankcase, upstream of the oil discharge port. The first distance is less than the second distance. Also, the oil discharge port is defined in part by a back edge, which is wedge shaped and points in a direction opposite the rotation direction of the crankshaft. The back edge scoops oil from the crank web and into the oil discharge port.

摘要翻译： 用于发动机的润滑系统包括在曲轴箱的下部的排油口。 具有附接到其上的曲柄腹板的曲轴在曲轴箱内沿旋转方向旋转。 第一距离形成在曲轴箱与排油口下游的曲轴箱的第一内表面之间。 在排油口上游的曲柄腹板与曲轴箱的第二内表面之间形成第二距离。 第一距离小于第二距离。 此外，排油口部分地由后缘限定，后边缘是楔形的并且指向与曲轴的旋转方向相反的方向。 后边缘的油从曲柄网上排出并进入排油口。

公开(公告)号：US06247439B1

公开(公告)日：2001-06-19

申请号：US09418576

申请日：1999-10-15

申请人： Yoshitsugu Gokan ,  Kazumitsu Yamamoto ,  Nobuaki Inumaru ,  Tatsuro Kimura

发明人： Yoshitsugu Gokan ,  Kazumitsu Yamamoto ,  Nobuaki Inumaru ,  Tatsuro Kimura

IPC分类号： F02N304

CPC分类号： F02N3/04 ,  Y10T29/49464 ,  Y10T29/49465 ,  Y10T74/134 ,  Y10T74/137 ,  Y10T74/19633

摘要： To provide a starter for an internal combustion engine which is capable of reducing a press-fit amount of a press-fit portion of a torque absorbing mechanism of a rotation transmitting means for transmitting the rotation of a kick shaft to a crank shaft, thereby enhancing the durability of the starter and making the starter compact. A kick-type starter for an internal combustion engine includes a rotation transmitting mechanism (a kick drive gear, a boss having a ratchet portion, a pinion gear, and an idler gear) for transmitting the rotation of a kick shaft to a crank shaft. The rotation transmitting mechanism is provided with a torque absorbing mechanism for absorbing an excessive torque due to an excessive input from the kick shaft. The torque absorbing mechanism is provided on the kick shaft, and includes a gear set composed of the boss having the ratchet and the pinion gear which are press-fitted to each other. At least one of the press-fit surface of the boss having the ratchet and the press-fit plane of the pinion gear is subjected to a low temperature sulphurizing treatment.

摘要翻译： 提供一种内燃机的起动器，其能够减少用于将脚踏轴的旋转传递到曲轴的旋转传递装置的扭矩吸收机构的压入部的压入量，从而提高 启动器的耐久性和使起动器紧凑。 用于内燃机的踢式起动器包括用于将脚蹬轴的旋转传递到曲轴的旋转传递机构（踢针驱动齿轮，具有棘轮部分的凸台，小齿轮和空转齿轮）。 旋转传递机构设置有用于吸收由于来自脚蹬轴的过大输入引起的过大扭矩的扭矩吸收机构。 扭矩吸收机构设置在脚踏轴上，并且包括由具有棘轮和小齿轮的凸台组成的齿轮组，该凸轮彼此压配合。 具有棘轮的凸台的压配合表面和小齿轮的压配合平面中的至少一个进行低温硫化处理。