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    Valve train for internal combustion engine
    161.
    发明授权
    Valve train for internal combustion engine 失效

    公开(公告)号：US06644254B2

    公开(公告)日：2003-11-11

    申请号：US10045050

    申请日：2002-01-15

    Applicant: Takeya Harada ,  Toshiki Kobayashi ,  Noriyuki Yamada

    Inventor： Takeya Harada ,  Toshiki Kobayashi ,  Noriyuki Yamada

    IPC: F01L1300

    CPC classification number: F01L1/267 ,  F01L1/024

    Abstract: A valve train for an internal combustion engine includes a rocker shaft (9) provided with an oil passage, first and second rocker arms (7, 8) having support parts (7a, 8a) provided with bores (7b, 8b) to receive the rocker shaft (9) therein so as to be supported on the rocker shaft (9) for rocking motion, and a rocker arm interlocking mechanism (10) for selectively engaging or disengaging the first and the second rocker arms (7, 8). The first rocker arm (7) is provided with a pressure chamber (33) holding a piston (30) therein, a straight connecting passage 34 connected to the pressure chamber (33) and an oil passage (35)formed in the rocker shaft (9). An open end surface (7b1) of the bore (7b) of a first support wall (7e) of the rocker arm (7) is on an axially outer side of the pressure chamber (33). The straight connecting passage (34) is inclined to the axis of the bore (7b) so that an imaginary passage (39) on an extension of the connecting passage (34) extended toward the open end surface (7b1) intersects the open end surface (7b1). The outermost side surface (7e1) of the first support wall (7e) has an inclined section inclined to the axis of the bore (7b) along the connecting passage (34).

    Valve timing control system for internal combustion engine
    162.
    发明授权
    Valve timing control system for internal combustion engine 失效
    内燃机气门正时控制系统

    公开(公告)号：US06622674B2

    公开(公告)日：2003-09-23

    申请号：US10201998

    申请日：2002-07-25

    Applicant: Yoshiyuki Kobayashi ,  Shigeaki Yamamuro ,  Naotaka Nakura

    Inventor： Yoshiyuki Kobayashi ,  Shigeaki Yamamuro ,  Naotaka Nakura

    IPC: F01L134

    CPC classification number: F01L1/34 ,  F01L1/022 ,  F01L1/024 ,  F01L2101/00 ,  F01L2105/00

    Abstract: A valve timing control system includes a driving plate coupled to a crankshaft, a lever shaft coupled to a camshaft, a VTC housing, and an electromagnetic coil mounted to the VTC housing for producing a magnetic field to control a mounting angle formed between the driving plate and the lever shaft. The electromagnetic coil has rotation restricted and axial displacement allowed by the VTC housing, and is engaged with the lever shaft to enable rotation with respect thereto and axial displacement together therewith.

    Abstract translation: 气门正时控制系统包括联接到曲轴的驱动板，联接到凸轮轴的杠杆轴，VTC壳体和安装到VTC壳体的电磁线圈，用于产生磁场以控制形成在驱动板之间的安装角度 和杠杆轴。 电磁线圈具有旋转限制和VTC壳体允许的轴向位移，并且与杠杆轴接合以使得能够相对于其旋转并与其一起轴向移动。

    Mid cam engine
    163.
    发明授权
    Mid cam engine 失效

    公开(公告)号：US06612275B2

    公开(公告)日：2003-09-02

    申请号：US10205279

    申请日：2002-07-25

    Applicant: Thomas A Immel ,  Gar M Adams

    Inventor： Thomas A Immel ,  Gar M Adams

    IPC: F01L102

    CPC classification number: F02M35/04 ,  F01L1/024 ,  F01L1/026 ,  F01L1/042 ,  F01L1/18 ,  F02B63/02 ,  F02B75/16 ,  F02B2075/027

    Abstract: A drive train for an overhead valve engine, including a cam gear driven by the crankshaft, the cam gear supported for rotation in the cylinder block externally of the cylinder head and having a cam lobe mounted thereon for actuating a pair of rocker arms mounted for rotation in the cylinder head, which in turn actuates intake and exhaust valves in the cylinder head. A first lubrication passageway is provided in the crankcase of the engine to communicate oil, pumped from the oil sump by a combination oil pump and governor assembly driven from the crankshaft, to the upper crankshaft bearing. A second lubrication passageway is provided in the crankshaft and communicates oil from the upper crankshaft bearing to the coupling between the crankshaft and the connecting rod. An air cleaner body includes an integrally formed fitting extending therefrom, which fits within an opening in the breather cover to directly communicate the breather chamber with the air cleaner, wherein the air cleaner body may be mounted to the cylinder block in an easy, one-step operation in which the fitting is inserted into the breather cover opening and the air cleaner body is fastened directly to a mounting flange of the carburetor.

    Flow path structure of hollow tube
    164.
    发明申请
    Flow path structure of hollow tube 有权
    中空管流路结构

    公开(公告)号：US20030154943A1

    公开(公告)日：2003-08-21

    申请号：US10338783

    申请日：2003-01-08

    Inventor： Shinichi Murata ,  Toshihiko Oka

    IPC: F01L001/34

    CPC classification number: F16L9/19 ,  F01L1/024 ,  F01L1/267 ,  F01L1/46 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2105/00

    Abstract: To provide a flow path structure of a hollow tube capable of reducing facility cost and product cost by promoting assembling operability, a rocker shaft is constituted by including a tubular member having a hollow portion and a partitioning member interposed at the hollow portion of the tubular member for partitioning the hollow portion into a plurality of flow paths along an axial direction and the partitioning member is constituted by a plate member including a partitioning portion for partitioning the hollow portion into the flow paths along the axial direction and a close contact portion brought into close contact with an inner face of the tubular member.

    Abstract translation: 为了提供能够通过提高组装操作性而降低设备成本和产品成本的中空管的流路结构，摇臂由包括具有中空部分的管状构件和设置在管状构件的中空部分处的分隔构件构成 用于将中空部分沿着轴向分隔成多个流动路径，并且分隔构件由包括用于将中空部分沿着轴向分隔成沿着轴向的流动路径的分隔部分和紧密接触部分构成的板构件 与管状构件的内表面接触。

    Valve timing adjusting device
    166.
    发明授权
    Valve timing adjusting device 有权
    气门正时调整装置

    公开(公告)号：US06591799B1

    公开(公告)日：2003-07-15

    申请号：US10070638

    申请日：2002-03-11

    Applicant: Hirofumi Hase ,  Katsuyuki Fukuhara

    Inventor： Hirofumi Hase ,  Katsuyuki Fukuhara

    IPC: F01L134

    CPC classification number: F01L1/3442 ,  F01L1/022 ,  F01L1/024 ,  F01L1/34 ,  F01L2001/0537 ,  F01L2001/34483 ,  F01L2710/00 ,  F01L2800/00 ,  F02B2275/18

    Abstract: A valve timing control device is mounted on an end of a camshaft having a plurality of cams opening and closing an intake or exhaust valve of an internal combustion engine to modify timing for the opening and closing of the intake or exhaust valve by way of a tappet. The device includes a bias means biasing the camshaft in an advanced direction with a biasing force approximately equal to or smaller than a peak value of frictional torque produced between a cam of the camshaft and the tappet.

    Abstract translation: 气门正时控制装置安装在具有打开和关闭内燃机的进气门或排气门的多个凸轮的凸轮轴的端部上，以通过挺杆改变进气门或排气门的打开和关闭的时间 。 该装置包括偏压装置，该偏压装置以大致等于或小于在凸轮轴和挺杆的凸轮之间产生的摩擦转矩的峰值的偏置力在前进方向上偏压凸轮轴。

    Synchronous drive apparatus and methods
    168.
    发明申请
    Synchronous drive apparatus and methods 有权
    同步驱动装置及方法

    公开(公告)号：US20030104886A1

    公开(公告)日：2003-06-05

    申请号：US10294933

    申请日：2002-11-15

    Inventor： Witold Gajewski

    IPC: F16H055/36 ,  F16H055/30 ,  F16H055/17 ,  F16H007/00

    CPC classification number: F16H55/171 ,  F01L1/02 ,  F01L1/022 ,  F01L1/024 ,  F01L1/356 ,  F01L1/46 ,  F01L2810/03 ,  F01L2820/01 ,  F02B67/06 ,  F02B75/06 ,  F16F15/264 ,  F16H7/023 ,  F16H9/24 ,  F16H35/02 ,  F16H55/084 ,  F16H57/0006 ,  F16H2035/003 ,  Y02T10/82 ,  Y10T74/1987 ,  Y10T74/19884

    Abstract: A synchronous drive apparatus and method, wherein the apparatus comprises a plurality of rotors comprising at least a first and a second rotor. The first rotor has a plurality of teeth for engaging the engaging sections of an elongate drive structure, and the second rotor has a plurality of teeth for engaging the engaging section of the elongate drive structure. A rotary load assembly is coupled to the second rotor. The elongate drive structure engages about the first and second rotors. The first rotor is arranged to drive the elongate drive structure and the second rotor is arranged to be driven by the elongate drive structure. One of the rotors has a non-circular profile having at least two protruding portions alternating with receding portions. The rotary load assembly is such as to present a periodic fluctuating load torque when driven in rotation, in which the angular positions of the protruding and receding portions of the non-circular profile relative to the angular position of the second rotor, and the magnitude of the eccentricity of the non-circular profile, are such that the non-circular profile applies to the second rotor an opposing fluctuating corrective torque which reduces or substantially cancels the fluctuating load torque of the rotary load assembly.

    Abstract translation: 一种同步驱动装置和方法，其中所述装置包括至少包括第一和第二转子的多个转子。 第一转子具有用于接合细长驱动结构的接合部分的多个齿，并且第二转子具有用于接合细长驱动结构的接合部分的多个齿。 旋转负载组件联接到第二转子。 细长驱动结构围绕第一和第二转子接合。 第一转子布置成驱动细长驱动结构，第二转子被布置成由细长的驱动结构驱动。 一个转子具有非圆形轮廓，其具有与后退部分交替的至少两个突出部分。 旋转负载组件当在旋转中被驱动时呈现出周期性波动的负载转矩，其中非圆形轮廓的突出和后退部分相对于第二转子的角位置的角位置以及 非圆形轮廓的偏心度使得非圆形轮廓向第二转子施加相对的波动校正扭矩，其减小或基本上抵消了旋转负载组件的波动负载转矩。

    Valve drive mechanism for an internal combustion engine
    169.
    发明授权
    Valve drive mechanism for an internal combustion engine 有权

    公开(公告)号：US06546905B2

    公开(公告)日：2003-04-15

    申请号：US09944765

    申请日：2001-08-31

    Applicant: Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis

    Inventor： Bernhard Dürr ,  Harald Schliemann ,  Manfred Rabis

    IPC: F01L118

    CPC classification number: F02B63/02 ,  B27B17/0008 ,  F01L1/024 ,  F01L1/12 ,  F01L1/18 ,  F01L1/20 ,  F02B2075/027

    Abstract: A valve drive mechanism is provided for an internal combustion engine, especially a four-stroke engine in a power chain saw. The implement housing is spanned by a front handle, the tubular grip of which is adjacent to the cylinder head of the engine and extends from one longitudinal side of the implement to the other longitudinal side thereof. A rocker arm of a valve control is pivotably mounted on the cylinder head between the ends of the rocker arm, with the rocker arm being pivotable about a pivot axis disposed transverse to the rocker arm. Push rods of a control mechanism engage one end of the rocker arm to actuate a poppet valve, on the valve stem of which the other end of the rocker arm acts. To be able to guide the tubular grip close to the center of gravity of the implement, the longitudinal axis of the rocker arm is disposed approximately parallel to the adjacent portion of the tubular grip.

    Valve-operating mechanism in 4-cycle engine
    170.
    发明授权
    Valve-operating mechanism in 4-cycle engine 有权

    公开(公告)号：US06539904B2

    公开(公告)日：2003-04-01

    申请号：US09946956

    申请日：2001-09-06

    Applicant: Keita Ito ,  Takao Nishida ,  Takeshi Maeda ,  Yasuhiro Shimizu

    Inventor： Keita Ito ,  Takao Nishida ,  Takeshi Maeda ,  Yasuhiro Shimizu

    IPC: F01L102

    CPC classification number: F01L1/053 ,  F01L1/02 ,  F01L1/024 ,  F01L1/18 ,  F02B63/02 ,  F02B2075/027

    Abstract: In a valve-operating mechanism in a 4-cycle engine, a timing transmitting device is disposed on one side of an engine body. A cam device includes a cam coupled to a driven pulley of the timing transmitting device on one side of a cylinder head, intake and exhaust rocker shafts rotatably carried in the cylinder head, intake and exhaust cam followers secured to one ends of the rocker shafts with their tip ends in sliding contact with the cam, and intake and exhaust rocker arms secured to the other ends of the intake and exhaust rocker shafts with their tip ends abutting against the intake and exhaust valves. Thus, the cam of the cam device can be disposed on one side of the cylinder head to effectively reduce the entire height of the engine.

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