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    Four-cycle engine
    51.
    发明授权
    Four-cycle engine 失效
    四冲程发动机

    公开(公告)号：US4660529A

    公开(公告)日：1987-04-28

    申请号：US369665

    申请日：1982-04-19

    Applicant: Masaaki Yoshikawa

    Inventor： Masaaki Yoshikawa

    IPC: F01L1/053 ,  F01L1/26 ,  F02B1/04 ,  F02B75/02 ,  F02F1/24 ,  F02F1/42 ,  F02M35/10

    CPC classification number: F02F1/4221 ,  F01L1/0532 ,  F01L1/265 ,  F01L2001/0537 ,  F02B1/04 ,  F02B2075/027 ,  F02B2275/18 ,  F02F2001/245

    Abstract: Several embodiments of cylinder head and valve train configurations for an overhead valve internal combustion engine that permits increased valve area without interference and while maintaining simplified valve actuation. In each embodiment one pair of valves is operated by one cam shaft and lies on one side of a plane containing the axis of the cylinder. Three other valves are positioned primarily on the other side of the plane and reciprocate about axes that are not parallel with each other. These axes, however, intersect so that each of these three valves may be operated by the same cam shaft. In one embodiment of the invention the intersection of the valves axis is coincident with the axis of rotation of the respective cam shaft so as to permit direct actuation of the valves. In another embodiment the intersection lies substantially along a plane that intersects the stems of the valves when they are closed to facilitate operation of multiple valves from a single cam lobe by means of a single rocker arm.

    Abstract translation: 用于顶置阀内燃机的气缸盖和气门机构配置的几个实施例，其允许增加阀面积而不受干扰并且同时维持简化的阀致动。 在每个实施例中，一对阀由一个凸轮轴操作并位于包含气缸轴线的平面的一侧。 另外三个阀门主要位于平面的另一侧，并且绕彼此不平行的轴线往复运动。 然而，这些轴相交，使得这三个阀中的每个可以由相同的凸轮轴操作。 在本发明的一个实施例中，阀轴线的相交与相应凸轮轴的旋转轴线重合，以允许阀的直接致动。 在另一个实施例中，当它们关闭时，相交部分基本上沿着与阀杆相交的平面，以便于借助于单个摇臂从单个凸轮凸角操作多个阀。

    4 stroke internal-combustion engine
    54.
    发明专利
    4 stroke internal-combustion engine 失效
    4冲程内燃机

    公开(公告)号：JPS6149121A

    公开(公告)日：1986-03-11

    申请号：JP16990184

    申请日：1984-08-16

    Applicant: Yamaha Motor Co Ltd

    Inventor： YOSHIKAWA MASAAKI ,  AOI KAZUO

    IPC: F01L1/00 ,  F01L1/26 ,  F02B1/04 ,  F02B23/00 ,  F02B23/08 ,  F02B75/02 ,  F02F1/24 ,  F02F1/42 ,  F02F3/28

    CPC classification number: F02B23/08 ,  F01L1/265 ,  F02B1/04 ,  F02B2075/027 ,  F02B2275/18 ,  F02F1/4221 ,  F02F2001/245 ,  Y02T10/125

    Abstract: PURPOSE: To improve further the high speed and output performance of an engine by inclining valve rods of an intake valve and an exhaust valve to a bore axis to make the central height of a piston less than a specified dimension.
    CONSTITUTION: An ignition plug 8 is disposed approximately in the center of a combustion chamber 7. At least three intake valves 10 and at least two exhaust valves 11 are provided per one cylinder. Valve rods 10a of the intake valves 10 are inclined to a bore axis C by angles α
    1 , α
    2 . Also, a valve rod 11a of the exhaust valve 11 is inclined to the bore axis C by angle β. The height of the central upper surface portion of a piston 6 is made equal or less to that of a plane interconnecting the upper surfaces of both peripheral shoulders. Thus, the high speed and output performance of an engine can be further improved by low stroke/bore ratio and high compression ratio without reducing the efficiency of combustion.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过将进气门和排气阀的阀杆倾斜到钻孔轴线来进一步提高发动机的高速和输出性能，使活塞的中心高度小于指定的尺寸。 构成：火花塞8大致设置在燃烧室7的中央。每个气缸至少设有三个进气门10和至少两个排气门11。 进气门10的阀杆10a相对于孔轴线C倾斜角α1，α2。 此外，排气门11的阀杆11a相对于孔轴C以角度β倾斜。 活塞6的中央上表面部分的高度等于或小于互连两个周向肩部的上表面的平面的高度。 因此，通过低冲程/内径比和高压缩比，可以进一步提高发动机的高速和输出性能，而不降低燃烧效率。

    Intake-valve driving apparatus for internal-combustion engine
    55.
    发明专利
    Intake-valve driving apparatus for internal-combustion engine 失效
    用于内燃机的吸入阀驱动装置

    公开(公告)号：JPS59165810A

    公开(公告)日：1984-09-19

    申请号：JP3916483

    申请日：1983-03-11

    Applicant: Yamaha Motor Co Ltd

    Inventor： NAGURA TAKAHIRO ,  KASAHARA NOBORU

    IPC: F01L1/26 ,  F01L3/20 ,  F01L3/22

    CPC classification number: F01L1/265

    Abstract: PURPOSE:To improve the discharge of the combusted gas into an exhaust passage by installing a member for restricting the intake stream in the early stage in opening an intake valve, in the captioned apparatus equipped with a plurality of intake valves per cylinder. CONSTITUTION:A plurality of intake valves 2 are installed for one cylinder, and a flow-rate restricting means 15 for restricting the intake flow in the early stage of opening the intake valve is installed for one or several intake valves. Said flow-rate control means 15 is formed of a peripheral wall 16 which is installed in close to the outer periphery of the intake valve 2 from the downstream edge of a valve seat, and a limited gap is formed between the peripheral wall 16 and the outer periphery of the intake valve 2. The action of the intake negative pressure which affects into a combustion chamber is reduced in the early stage of opening the valve, and the combusted gas is discharged into an exhaust passage without generating backward flow into the intake passage. When overlap is completed, a large amount of intake air is introduced into the combustion chamber in a short time, since the area of an intake port is large.

    Abstract translation: 目的：通过在每个气缸配备有多个进气门的标题装置中设置用于在打开进气门的早期阶段安装用于限制进气流的构件，从而将燃烧气体排出到排气通道中。 构成：为一个气缸安装多个进气门2，在一个或多个进气门上安装有用于限制进气门打开的早期进气流量的流量限制机构15。 所述流量控制装置15由从阀座的下游边缘安装在进气门2的外周附近的周壁16形成，并且在周壁16和 进气门2的外周。影响到燃烧室中的进气负压的作用在打开阀的早期阶段减小，并且燃烧的气体被排放到排气通道中，而不会产生向进入通道 。 当重叠完成时，由于进气口的面积大，所以在短时间内将大量的进气引入燃烧室。

    Four-cycle engine provided with variable valve timing device
    59.
    发明专利
    Four-cycle engine provided with variable valve timing device 失效
    四轮发动机提供可变阀门定时装置

    公开(公告)号：JPH11280541A

    公开(公告)日：1999-10-12

    申请号：JP10003398

    申请日：1998-03-27

    Applicant: Yamaha Motor Co Ltd ,  ヤマハ発動機株式会社

    Inventor： TAKAHASHI HIROHISA

    IPC: F01L1/04 ,  F01L1/02 ,  F01L1/053 ,  F01L1/26 ,  F01L1/34 ,  F01L1/344 ,  F01L1/46 ,  F02D13/02 ,  F02F1/24

    CPC classification number: F01L1/022 ,  F01L1/02 ,  F01L1/0532 ,  F01L1/265 ,  F01L1/344 ,  F01L1/34406 ,  F01L1/46 ,  F01L2001/0537 ,  F01L2001/34436 ,  F01L2001/3444 ,  F02B2275/18

    Abstract: PROBLEM TO BE SOLVED: To mount a hydraulic control valve relating to a cam shaft support part on condition that tightening quality of a head bolt is ensured without enlarging length of an engine total unit, also ensure maintainability of the hydraulic control valve by exposing it to outside an engine with no particular seal part required.
    SOLUTION: In this four-cycle engine additionally provided with a variable valve timing device 20 relating to at least either one of each cam shaft 5, 6 in an intake or exhaust side, a cam shaft support part supporting the cam shaft 5 in the vicinity of the variable valve timing device 20 is integrally connected relating to a cylinder head 1 as a cam carrier 13, which is a separate member from a cylinder head 1, so as to overlap with a head bolt 46 as viewed by plane, also a hydraulic control valve 30 of the variable valve timing device 20 is inserted in a wall part of the cylinder head and mounted in the cam carrier 13 so as to be partly exposed to the outside.
    COPYRIGHT: (C)1999,JPO

    Abstract translation: 要解决的问题：为了在不扩大发动机总单元的长度的情况下确保头螺栓的紧固质量的条件下安装与凸轮轴支撑部件相关的液压控制阀，还通过将液压控制阀暴露于 外部没有特殊密封件的发动机。 解决方案：在这种四冲程发动机中，另外设置有与进气或排气侧的每个凸轮轴5,6中的至少一个相关的可变气门正时装置20，在相邻的位置支撑凸轮轴5的凸轮轴支撑部 可变气门正时装置20与作为作为与气缸盖1分离的构件的凸轮架13的气缸盖1整体连接，以便与俯视平面的头螺栓46重叠，液压 可变气门正时装置20的控制阀30插入气缸盖的壁部，并且安装在凸轮架13中以部分地暴露在外部。

    Valve moving device of interval-combustion engine
    60.
    发明专利
    Valve moving device of interval-combustion engine 失效
    间歇式发动机阀门移动装置

    公开(公告)号：JPS6149113A

    公开(公告)日：1986-03-11

    申请号：JP16937884

    申请日：1984-08-15

    Applicant: Yamaha Motor Co Ltd

    Inventor： KURODA YUZO

    IPC: F01L1/26 ,  F02B1/04 ,  F02F1/24 ,  F02F1/42

    CPC classification number: F02F1/4214 ,  F01L1/265 ,  F02B1/04 ,  F02B2275/18 ,  F02F2001/245

    Abstract: PURPOSE: To increase the diameter of lifters on both sides and secure a sufficient lift quantity by driving the central intake valve among three intake valves arranged per cylinder via a rocker arm.
    CONSTITUTION: There intake valves and two exhaust valves are provided per cylinder, the intake valves are driven by an intake valve cam 11a, and the exhaust valves are driven by an exhaust valve cam 12a. Two exhaust valves and the intake valves on both sides are directly driven by the cams 12a, 11a via lifters 19, 15, while the central intake valve is driven by the cam 11a via a rocker arm 16. Although three intake valves are provided, the lifter 15 can be made large in diameter, the lift quantity of the intake valves can be increased, and the performance of an engine can be improved.
    COPYRIGHT: (C)1986,JPO&Japio

    Abstract translation: 目的：通过摇臂在每个气缸排列的三个进气阀之间驱动中央进气阀，增加两侧升降机的直径，确保足够的提升量。 构成：每个气缸设有进气门和两个排气阀，进气门由进气阀凸轮11a驱动，排气门由排气门凸轮12a驱动。 两个排气门和两侧的进气门通过升降器19,15直接由凸轮12a，11a驱动，而中央进气门由凸轮11a经由摇臂16驱动。尽管提供了三个进气门， 升降器15的直径可以大，能够提高进气门的升程量，能够提高发动机的性能。

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