公开(公告)号：US4553473A

公开(公告)日：1985-11-19

申请号：US539044

申请日：1983-10-04

申请人： Katsumi Ichida ,  Koichi Fukuo ,  Junichi Araki ,  Isao Machida

发明人： Katsumi Ichida ,  Koichi Fukuo ,  Junichi Araki ,  Isao Machida

IPC分类号： F02B67/06 ,  F01L1/02 ,  F01L1/053 ,  F02B75/22 ,  F01B1/04

CPC分类号： F01L1/022 ,  F01L1/02 ,  F01L1/024 ,  F01L1/0532 ,  F02B75/22 ,  F01L2001/0537 ,  F02B2275/06 ,  F02B2275/08 ,  F02B2275/18 ,  F02B67/06

摘要： A DOHC engine of the V-type has two cylinder heads each detachably secured to a cylinder block. A crank shaft on the block drives two intermediate shafts, one on each cylinder head, by means of an endless flexible element. An additional flexible endless element is provided in each cylinder head to drive two cam shafts from the intermediate shaft on that cylinder head. Each endless flexible element together with its toothed pulleys or sprockets and its timing belt or chain is described as a wrap-around transmission.

摘要翻译： V型的DOHC发动机具有两个气缸盖，每个气缸头可拆卸地固定到气缸体。 块上的曲轴通过环形柔性元件驱动两个中间轴，每个气缸盖上的一个中间轴。 在每个气缸盖中设有一个额外的柔性环形元件，用于从该气缸盖上的中间轴驱动两个凸轮轴。 每个环形柔性元件及其带齿的滑轮或链轮及其同步带或链条被描述为环绕传动装置。

公开(公告)号：US4729352A

公开(公告)日：1988-03-08

申请号：US802696

申请日：1985-11-27

申请人： Koichi Fukuo ,  Takao Ito ,  Katsumi Ichida

发明人： Koichi Fukuo ,  Takao Ito ,  Katsumi Ichida

IPC分类号： F01B9/02 ,  F01M11/02 ,  F02B75/22 ,  F02F7/00 ,  F01M1/00

CPC分类号： F02F7/0053 ,  F01B9/02 ,  F01M11/02 ,  F02F7/0012 ,  F02B75/22 ,  F02F2200/06 ,  F05C2201/021 ,  F05C2201/0436

摘要： A crankshaft support structure for a multicylinder internal combustion engine employing a plurality of bearihng caps with pairs of vertical and horizontal surfaces fitting mating surfaces in the cylinder block for structurally mating the bearing caps to the cylinder block. A structural bridge extends across the bearing caps and is connected through the bearing caps to the block by one set of bolts and directly to the block by a second set of bolts. A second embodiment employs a third set of bolts connecting the bearing caps separately to the block. Arcuate baffle plates form the portion of the bridge between bearing caps to inhibit oil agitation and suppress noise.

摘要翻译： 一种用于多缸内燃机的曲轴支撑结构，其采用具有垂直和水平表面对的多个比较帽来配合气缸体中的配合表面，用于将轴承盖结构地配合到气缸体。 结构桥梁延伸穿过轴承盖，并通过一组螺栓通过轴承盖连接到块体，并通过第二组螺栓直接连接到块体。 第二实施例采用将轴承盖分别连接到块的第三组螺栓。 弧形挡板形成轴承盖之间桥梁的部分，以抑制油搅动并抑制噪音。

公开(公告)号：US4919089A

公开(公告)日：1990-04-24

申请号：US273202

申请日：1988-11-17

申请人： Yoshihiro Fujiyoshi ,  Hidenobu Nagase ,  Koichi Fukuo ,  Takatoshi Aoki

发明人： Yoshihiro Fujiyoshi ,  Hidenobu Nagase ,  Koichi Fukuo ,  Takatoshi Aoki

IPC分类号： F01L1/16 ,  F01L1/24 ,  F01L9/02 ,  F01L13/00

CPC分类号： F01L1/16 ,  F01L9/023

摘要： A valve-operating system for an internal combustion engine, which system includes a valve-driving piston slidably received in a cylinder body and operatively connected at one end of the piston to an engine valve spring-biased in a closing direction. A check valve and an orifice are interposed between a hydraulic pressure generating means for generating an oil pressure for causing opening of the engine valve and a damper chamber defined between the cylinder body and the valve-driving piston. The check valve permits only the flow of working oil from the hydraulic pressure generating means to the damper chamber. The orifice restricts the return of working oil from the damper chamber to the hydraulic pressure generating means. The orifice is made sufficiently short relative to its width to reduce the influence due to viscosity variations of the working oil to an extremely small level.

公开(公告)号：US4901685A

公开(公告)日：1990-02-20

申请号：US310468

申请日：1989-02-15

申请人： Koichi Fukuo ,  Hiroshi Shirai ,  Takashi Tatsumi

发明人： Koichi Fukuo ,  Hiroshi Shirai ,  Takashi Tatsumi

IPC分类号： F01L1/26

CPC分类号： F01L1/267

摘要： A valve operating mechanism for an internal combustion engine having a crankshaft and a plurality of intake or exhaust valves normally biased in a valve closing direction includes a rocker shaft, a cam rotatable in synchronism with the crankshaft, a plurality of rocker arms swingably supported on the rocker shaft in association with the valves, respectively, and swingable by the cam, a coupling device for selectively connecting and disconnecting adjacent ones of the rocker arms under hydraulic pressure, and a hydraulic circuit openable and closable according to a rotational speed of the engine for selectively supplying hydraulic pressure to the coupling device. The opening and closing of the hydraulic circuit are controlled in view of a delay in operation thereof based on an angular displacement of the crankshaft or the cam so that the coupling device will be inoperative when the rocker arms are in a predetermined initial interval of a valve opening stroke thereof. The delay in operation of the hydraulic circuit is determined dependent on operating conditions of the internal combustion engine. The predetermined initial interval is defined such that when a piston of the coupling device is urged to slidably move from one of the rocker arms to the other during the initial interval, the piston is struck by the other rocker arm.

摘要翻译： 具有曲轴和通常以关闭方向偏压的多个进气门或排气门的内燃机的气门操作机构包括：摇臂轴，与该曲轴同步旋转的凸轮;多个摆臂， 摇杆轴分别与阀相连并由凸轮摆动，用于在液压下选择性地连接和断开相邻的摇臂的联接装置，以及根据发动机的转速可开启和关闭的液压回路 选择性地向连接装置供给液压。 考虑到其基于曲轴或凸轮的角位移的延迟来控制液压回路的打开和关闭，使得当摇臂处于阀的预定初始间隔内时，联接装置将不起作用 打开行程。 液压回路的运行延迟取决于内燃机的运行条件。 预定的初始间隔被限定为使得当在初始间隔期间当联动装置的活塞被推动以从摇臂中的一个滑动地移动到另一个时，活塞被另一个摇臂撞击。

公开(公告)号：US4758206A

公开(公告)日：1988-07-19

申请号：US917722

申请日：1986-10-10

申请人： Koichi Fukuo ,  Michio Sato

发明人： Koichi Fukuo ,  Michio Sato

IPC分类号： F02B67/06 ,  F01L1/02 ,  F01L1/46 ,  F02B75/22 ,  F16H7/02

CPC分类号： F02B75/22 ,  F01L1/02 ,  F01L1/024 ,  F16H7/023 ,  F01L2001/0535 ,  F02B2275/06 ,  F02B2275/18 ,  F02B2275/20 ,  F02B67/06

摘要： In the case of a cam shaft drive structure in which a cogged belt is passed around a pair of cam shaft pulleys for two cylinder banks of an OHC V-type engine and a crank shaft pulley, it has been widely believed that the tension of the cogged belt resulting from the longitudinal vibration of the cogged belt can be minimized by reducing the masses of the cam shaft pulleys to a least possible value. However, it was discovered by the inventors that it is not necessarily the case and on the contrary a favorable result can be obtained by selecting the moment of inertia of the cam shaft pulley on the tight side to be greater than the moment of inertia of the cam shaft pulley on the slack side. The reverse surface of the cogged belt can be conveniently utilized for driving accessory equipment and for engaging an idler pulley thereto.

摘要翻译： 在凸轮轴驱动结构的情况下，齿形带围绕OHC V型发动机和曲轴滑轮的两个气缸组的一对凸轮轴滑轮通过，已经广泛认为， 可以通过将凸轮轴滑轮的质量减小到最小可能的值来最小化由带齿带的纵向振动所产生的楔形带。 然而，本发明人发现，不一定是这种情况，相反，通过选择紧密侧的凸轮轴滑轮的惯性矩大于其惯性矩，可以获得有利的结果 凸轮轴滑轮位于松弛侧。 带齿带的相反表面可以方便地用于驱动附件设备并将惰轮与其啮合。

公开(公告)号：US5101778A

公开(公告)日：1992-04-07

申请号：US696776

申请日：1991-05-07

申请人： Koichi Fukuo ,  Takatoshi Aoki ,  Kazutoshi Nishizawa

发明人： Koichi Fukuo ,  Takatoshi Aoki ,  Kazutoshi Nishizawa

IPC分类号： F01L1/00 ,  F01L1/053 ,  F01L1/18 ,  F01L1/26 ,  F01L13/00 ,  F02B1/04 ,  F02B31/02 ,  F02F1/24 ,  F02F1/42 ,  F02P13/00

CPC分类号： F01L1/185 ,  F01L1/053 ,  F01L1/267 ,  F01L13/0036 ,  F02F1/24 ,  F02F1/4214 ,  F02B1/04 ,  F02B2275/20 ,  F02F2001/245 ,  Y02T10/146

摘要： An SOHC type internal combustion engine comprises a pair of intake valves and a pair of exhaust valves, which are carried in a cylinder head, for opening and closing operation, at a small angle formed by axes of both the pairs of the valves in a projected view on a plane perpendicular to a crankshaft axis including an axis of a cylinder, a single cam shaft rotatably disposed above a combustion chamber, a single rocker shaft fixedly disposed above the combustion chamber, a plurality of intake rocker arms interposed between the cam shaft and the pair of intake valves and swingably carried on the rocker shaft, a pair of exhaust rocker arms interposed between the rocker shaft and the pair of exhaust valves and swingably carried on the rocker shaft, and a plug insertion cylindrical portion which is provided in the cylinder head between both the exhaust valves and into which is inserted a spark plug disposed at a substantially central portion of a ceiling surface of the combustion chamber. In this SOHC type internal combustion engine, a connection changeover mechanism is provided in the plurality of intake rocker arms for changing over the connection and disconnection of adjacent ones of the intake rocker arms to change the operation mode of the intake valves in accordance with the operational condition of the engine.

摘要翻译： SOHC型内燃机包括一对进气阀和一对排气阀，它们以一个小的角度被承载在气缸盖中，用于打开和关闭操作，所述小角度由两对阀的轴线以预定的角度形成 在与包括气缸轴线的曲轴轴线垂直的平面上观察，可旋转地设置在燃烧室上方的单个凸轮轴，固定地设置在燃烧室上方的单个摇杆轴，多个进气摇臂插入在凸轮轴和 所述一对进气阀可摆动地承载在所述摇杆上，一对排气摇臂插入在所述摇杆轴和所述​​一对排气门之间，并且可摆动地承载在所述摇杆上;以及插头插入圆筒部，其设置在所述气缸 两个排气门之间的头部，并插入设置在燃烧室的顶表面的大致中心部分处的火花塞。 在该SOHC型内燃机中，在多个进气摇臂中设置有连接切换机构，用于切换相邻的进气摇臂的连接和断开，以根据操作改变进气门的操作模式 发动机的状况

公开(公告)号：US4909203A

公开(公告)日：1990-03-20

申请号：US342973

申请日：1989-04-25

申请人： Koichi Fukuo

发明人： Koichi Fukuo

IPC分类号： F01M11/00 ,  F01M11/06

CPC分类号： F01M11/065 ,  F01M2011/0041 ,  F16N2230/02

摘要： An oil reservoir structure for an engine having an oil reservoir chamber attached to the lower end of the cylinder block of the engine. A volume body having a predetermined volume is located in the space defined between the crankshaft of the engine and the normal oil level in the oil reservoir chamber. The volume body becomes submerged upon tilting of the oil level, such as in vehicle turning, acceleration, deceleration or on inclines, to displace a volume of oil to raise the oil level and maintain the oil level above the oil strainer inlet leading to the oil pump. The volume body may be fixedly mounted or disposed on the oil level and vertically movable in response to a change in the oil level.

摘要翻译： 一种用于发动机的储油结构，其具有附接到发动机气缸体的下端的储油室。 具有预定体积的体积体位于限定在发动机的曲轴和储油室中的正常油位之间的空间中。 容积体在油位倾斜时变得淹没，例如在车辆转弯，加速，减速或倾斜时，移动一定量的油以提高油位，并将油位保持在油过滤器入口上方导致油 泵。 体积体可以固定地安装或设置在油位上并且可以响应于油位的变化而垂直移动。

公开(公告)号：US4800850A

公开(公告)日：1989-01-31

申请号：US137757

申请日：1987-12-24

申请人： Kazuo Yoshida ,  Koichi Fukuo

发明人： Kazuo Yoshida ,  Koichi Fukuo

IPC分类号： F01L1/18 ,  F01L1/26 ,  F01L1/46 ,  F01L13/00 ,  F01M1/16 ,  F01M9/10 ,  F02F1/24 ,  F02F1/42

CPC分类号： F01L1/26 ,  F01L1/267 ,  F01M1/16 ,  F01M9/10 ,  F01M9/101 ,  F01M9/105 ,  F02F1/4214 ,  F02F2001/245

摘要： A hydraulic circuit for a valve operating mechanism for an internal combustion engine which has a plurality of intake or exhaust valves normally urged in a valve closing direction, a plurality of adjacent rocker arms associated respectively with the intake or exhaust valves and pivotably supported on a rocker shaft. The rocker arms are pivotable by cams rotatable in synchronism with a crankshaft. A coupling mechanism is provided in the rocker arm selectively interconnecting and disconnecting adjacent rocker arms in response to oil pressure. A hydraulic circuit supplies oil pressure to the coupling means and an oil feed passage lubricates the cams. The hydraulic circuit and oil feed passage are connected in series to each other through a flow restriction and the hydraulic circuit includes a directional control valve for changing the direction of flow of lubricating oil supplied from an oil pump to cause the lubricating oil to flow from the oil feed passage to the hydraulic circuit during low-speed operation of the engine and to cause the lubricating oil to flow from the hydraulic circuit to the oil feed passage during high-speed operation of said engine to always provide the proper oil pressure levels in the oil feed passage and the hydraulic circuit.

公开(公告)号：US4656991A

公开(公告)日：1987-04-14

申请号：US804676

申请日：1985-12-04

申请人： Koichi Fukuo ,  Shinji Sasaki

发明人： Koichi Fukuo ,  Shinji Sasaki

IPC分类号： F01M11/00 ,  F01M13/00 ,  F01M13/02 ,  F02B75/22 ,  F02M25/06

CPC分类号： F01M13/00 ,  F02B75/22 ,  F01M13/022 ,  F01M2011/0033 ,  F02B2275/20 ,  F02F2200/06

摘要： A crankcase blow-by gas breather device and arrangement where the ends of the crankcase are provided with spaces beyond the end supporting walls for the crankshaft, which spaces conduct the blow-by gas directly to a breather chamber for separating at least some of the entrained oil. The breather chamber is connected to the overhead valve chambers which, in turn, are connected to the intake system for recycling the blow-by gases to the engine. In a V-type engine the breather chamber is integrally formed in the bottom wall of the "V".

摘要翻译： 曲轴箱窜气通气装置和布置，其中曲轴箱的端部设置有超过曲轴端部支撑壁的空间，这些空间将窜气直接传递到通气室，用于分离至少一些夹带的 油。 通气室连接到顶置阀室，顶部阀室又连接到进气系统，用于将窜气再循环到发动机。 在V型发动机中，通气室一体地形成在“V”的底壁上。

公开(公告)号：US4858574A

公开(公告)日：1989-08-22

申请号：US138080

申请日：1987-12-24

申请人： Koichi Fukuo ,  Mitsuhiro Shibata ,  Toshiaki Hiro ,  Masahiko Matsumoto

发明人： Koichi Fukuo ,  Mitsuhiro Shibata ,  Toshiaki Hiro ,  Masahiko Matsumoto

IPC分类号： F01L1/26 ,  F01M1/16 ,  F01M9/10 ,  F02F1/24 ,  F02F1/42

CPC分类号： F01M9/10 ,  F01L1/26 ,  F01L1/267 ,  F01M1/16 ,  F01M9/101 ,  F01M9/102 ,  F01M9/108 ,  F02F1/4214 ,  F02F2001/245

摘要： A hydraulic circuit for a valve operation timing control device for an internal combustion engine which has a low-speed cam having a shape suited for low-speed operation of the engine, a high-speed cam having a shape suited for high-speed operation of the engine, the low- and high-speed cams being integrally formed on a camshaft rotatable in synchronism with a crankshaft, a first rocker arm held in slidable contact with the low-speed cam, a second rocker arm held in slidable contact with the high-speed cam. The first and second rocker arms are adjacent to and in slidable contact with each other and pivotably supported on a rocker shaft for relative angular displacement. There is a first oil feed passage for lubricating the low-speed cam and a second oil feed passage for lubricating the high-speed cam. The first rocker arm has a hydraulic lash adjuster and a relief valve is disposed in the oil passage for supplying oil pressure to said hydraulic lash adjuster for maintaining a predetermined oil pressure on the hydraulic lash adjuster.