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    • 4. 发明授权
    • Method for producing a rocker arm for use in an internal combustion
engine
    • 一种用于内燃机的摇臂的制造方法
    • US4955121A
    • 1990-09-11
    • US71652
    • 1987-07-09
    • Masakazu SatoSeiichi KoikeToshihiro OikawaKeisuke Ban
    • Masakazu SatoSeiichi KoikeToshihiro OikawaKeisuke Ban
    • B22D27/11
    • B21K1/205B22D27/11Y10T29/49295Y10T29/49989
    • A method for casting a rocker arm made of light alloy for use in an overhead cam shaft type valve operating mechanism of an internal combustion engine, which rocker arm includes a thick-walled bearing section to be fitted on a rocker arm shaft and is integrally provided with a wear-resistive piece having a protrusion on its rear surface and adapted to abut a cam. After molten metal has been injected under pressure into a metallic mold for the rocker arm, a secondary pressurizing force directed in the direction of an imaginary center axis of a rocker arm shaft is exerted by means of a pressurizing rod. In the metallic mold for the rocker arm, a sprue is provided close to the position where the wear-resistive piece is disposed with respect to the position where the bearing section is formed, and the direction of the sprue is directed towards the position where the wear-resistive place is disposed.
    • 一种用于铸造用于内燃机的顶部凸轮轴型阀操作机构的由轻合金制成的摇臂的方法,所述摇臂包括将被安装在摇臂轴上的厚壁轴承部分并且一体地设置 具有在其后表面上具有凸起并且适于邻接凸轮的耐磨件。 在压力下将熔融金属注入到用于摇臂的金属模具中之后,通过加压杆来施加沿摇臂轴的假想中心轴方向的二次加压力。 在用于摇臂的金属模具中,相对于形成有轴承部的位置,在耐磨件设置的位置附近设有浇道,并且浇道的方向被引导到 设置耐磨地点。
    • 7. 发明授权
    • Valve operating system in internal combustion engine
    • 内燃机阀门操作系统
    • US6125805A
    • 2000-10-03
    • US420409
    • 1999-10-19
    • Toshiyuki SatoToshihiro OikawaYutaka Otobe
    • Toshiyuki SatoToshihiro OikawaYutaka Otobe
    • F01L1/26F01L13/00
    • F01L1/267F01L2105/02
    • A valve operating system in an internal combustion engine includes a cam shaft provided with a plurality of valve operating cams, a plurality of rocker arms positioned adjacent one another, an associative operation switch capable of being switched between a state in which it permits the rocker arms adjacent each other to be operated associatively with each other, and a state in which it releases the associative operation. An urging means for urging the free rocker arm of the plurality of rocker arms toward the valve operating cam corresponding to the free rocker arm, which becomes free relative to an engine valve, when the associative operation switch is brought into the associative operation releasing state. The free rocker arm is provided with first and second support walls spaced apart and opposed to each other, and a roller is provided in rolling contact with a valve operating cam corresponding to the free rocker arm, and is rollably supported on a support shaft mounted to extend between the support walls through a bearing. In such valve operating system, one of the support walls included in the free rocker arm is integrally provided with a receiving portion which contacts with the urging means. Therefore, the structure of the free rocker arm can be simplified in such a manner that the receiving portion is positioned to the side of the roller. In addition, an increase in size of the free rocker arm can be avoided, and the inertial weight is reduced. Thus, it is possible to conveniently accommodate the high-speed rotation of the internal combustion engine.
    • 一种内燃机中的气门操作系统,具有设置有多个气门操作凸轮的凸轮轴,相邻的多个摇臂,能够切换的状态,该状态允许摇臂 彼此相邻地彼此相关地操作,以及释放关联操作的状态。 一种推动装置,用于当关联操作开关进入关联操作释放状态时,将多个摇臂的自由摇臂朝向相对于发动机气门变空的自由摇臂相应的气门操作凸轮推动。 自由摇臂设置有彼此间隔开并彼此相对的第一和第二支撑壁,并且设置有与对应于自由摇臂的气门操作凸轮滚动接触的辊,并且可滚动地支撑在安装到 通过轴承在支撑壁之间延伸。 在这种阀操作系统中,包括在自由摇臂中的一个支撑壁一体地设置有与推动装置接触的接收部分。 因此,可以简化自由摇臂的结构,使得接收部分位于辊的侧面。 此外,可以避免自由摇臂的尺寸增加,并且惯性重量减小。 因此,可以方便地适应内燃机的高速旋转。
    • 9. 发明授权
    • Dual-fuel engine
    • 双燃料发动机
    • US5228423A
    • 1993-07-20
    • US960162
    • 1992-10-13
    • Toshihiro OikawaShunichi TsuzukiYuji Yamamoto
    • Toshihiro OikawaShunichi TsuzukiYuji Yamamoto
    • F01L1/26F02B69/00F02D13/02F02D19/06F02M21/02
    • F02D13/0226F01L1/267F02B69/00F02D13/0257F02D19/0615F02D19/0647F02D19/0692F02M35/10045F02M35/1085Y02T10/18Y02T10/36
    • In a dual-fuel internal combustion engine which can selectively use gaseous fuel such as CNG or liquid fuel such as gasoline, a pair of intake passages are independently connected to a combustion chamber of the engine, and a gaseous fuel supply device and a liquid fuel supply device are provided in the corresponding intake passages so that the liquid and gaseous fuels may not mix with each other when the fuel for the engine is switched over one from the other as they are introduced into the combustion chamber through different intake passages. Further, by switching the operating mode of the intake valve when changing the fuel, the configuration of the intake passage can be optimized for each fuel, and the timing and the lift of the intake valves may also be optimized for each fuel without complicating the control structure of the overall system. The present invention can improve the torque output and the emission property of the dual-fuel engine.
    • 在能够选择性地使用气体燃料如CNG或液体燃料如汽油的双燃料内燃机中,一对进气通道独立地连接到发动机的燃烧室,气体燃料供应装置和液体燃料 供给装置设置在相应的进气通道中,使得当用于发动机的燃料在通过不同的进气通道被引入燃烧室中时,将发动机的燃料从另一个切换而使液体和气体燃料彼此不混合。 此外,通过在改变燃料时切换进气门的操作模式,可以对每个燃料优化进气通道的构造,并且还可以针对每种燃料优化进气门的正时和升程,而不会使控制复杂化 整体系统的结构。 本发明可以提高双燃料发动机的扭矩输出和排放性能。