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公开(公告)号：US5209201A
公开(公告)日：1993-05-11
申请号：US742831
申请日：1991-08-08
申请人： Kaoru Horie , Kazutoshi Nishizawa , Takatoshi Aoki , Ryuji Matsukado , Chihaya Sugimoto , Takeshi Iwata
发明人： Kaoru Horie , Kazutoshi Nishizawa , Takatoshi Aoki , Ryuji Matsukado , Chihaya Sugimoto , Takeshi Iwata
IPC分类号： F01L1/26 , F01L13/00 , F02B1/04 , F02B17/00 , F02B31/00 , F02D13/02 , F02D41/00 , F02D41/30 , F02D41/34 , F02M69/04 , F02M69/08
CPC分类号： F02D13/0226 , F01L1/267 , F01L13/0005 , F01L13/0036 , F02B17/00 , F02B31/00 , F02D13/0257 , F02D41/0002 , F02D41/3023 , F02D41/345 , F02M69/044 , F02M69/08 , F02B1/04 , F02B2031/006 , F02B2275/20 , F02D2041/001 , Y02T10/146 , Y02T10/18 , Y02T10/42 , Y02T10/44
摘要： In an internal combustion engine comprising a valve operating system connected to a pair of intake valves and arranged to open one of the intake valves only in a very small amount such that the one intake valve is brought into its substantially inoperative state, in a suction stroke mainly in a low speed rotation region of the engine, a fuel injection valve capable of injecting fuel toward a pair of intake ports independently corresponding to the intake valves, and a control means for controlling the operation of the fuel injection valve, the control means is arranged to control the fuel injection valve with a fuel injection completion time determined within a suction stroke, when the one intake valve is in the substantially inoperative state. This ensures that when the one intake valves has been brought into its substantially inoperative state, the injection of fuel by the fuel injection valve can be completed in the suction stroke, so that the injected fuel can be sequentially introduced into a combustion chamber in a condition of the other intake valve being open, thereby achieving an axially stratified air charge to provide an improved combustibility.
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公开(公告)号：US5095859A
公开(公告)日：1992-03-17
申请号：US684657
申请日：1991-04-12
申请人： Takeshi Iwata , Takatoshi Aoki , Chihaya Sugimoto
发明人： Takeshi Iwata , Takatoshi Aoki , Chihaya Sugimoto
CPC分类号： F02F1/4214 , F01L1/267 , F02B1/04 , F02B2275/20 , F02F2001/245
摘要： A SOHC type internal combustion engine includes a pair of intake valves and a pair of exhaust valves. The intake valve driving means comprises a plurality of rocker arms disposed adjacent one another, including a pair of driving rocker arms operatively connected separately to the intake valves and a connection switchover mechanism capable of switching-over the connection and disconnection of the adjacent rocker arms in accordance with the operational condition of the engine. The exhaust valve driving means comprises a pair of exhaust valve-side rocker arms operatively connected separately to the exhaust valves and disposed on opposite sides of the intake valve driving means in positions opposed to said cam shaft, respectively. In the intake valve driving means, the opening and closing mode of the intake valves can be changed in accordance with the operational condition of the engine by operation of the connection switchover mechanism, thereby providing an improvement in output from the engine. The intake valve driving means is constructed compactly by disposition of the plurality of rocker arms constituting the intake valve driving means adjacent one another in the positions opposed to the cam shaft, thereby enabling an effective and compact construction of the connection switchover mechanism provided in the intake valve driving means.
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公开(公告)号：US5101778A
公开(公告)日：1992-04-07
申请号：US696776
申请日：1991-05-07
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
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公开(公告)号：US5363818A
公开(公告)日：1994-11-15
申请号：US960001
申请日：1993-01-13
申请人： Takeshi Iwata , Takatoshi Aoki
发明人： Takeshi Iwata , Takatoshi Aoki
CPC分类号： F01L1/265 , F01L1/267 , F01L13/0005 , F01L2003/25
摘要： In a valve operating apparatus comprising a drive rocker arm which is interposed between a cam shaft and at least an intake valve of intake and exhaust valves spring-biased in closing directions and which is operatively connected to the intake valve, a free rocker arm also interposed between the cam shaft and at least the intake valve and capable of being liberated from said intake valve, a connection switchover mechanism provided in said rocker arms and capable of switching-over the connection and disconnection of said rocker arms, and a lost motion mechanism provided in an engine body for resiliently biasing said free rocker arm toward the cam shaft, wherein said lost motion mechanism (38) is disposed in a support member (37) disposed above the cylinder head (2), and the free rocker arm (26) is disposed below the support member (37). This makes it possible to insure a sufficient space below the rocker arms (24 to 26).
摘要翻译： PCT No.PCT / JP91 / 00484 Sec。 371日期1993年1月13日 102（e）日期1993年1月13日PCT 1991年4月12日PCT PCT。 公开号WO91 / 16527 日期为1991年10月31日。在包括驱动摇臂的气门操作装置中，所述驱动摇臂插入在凸轮轴和至少在关闭方向上弹簧偏压的进气门和进气门之间，该进气门可操作地连接到进气阀 一个自由的摇臂，其也插入到凸轮轴和至少进气门之间并且能够从所述进气门释放;连接切换机构，设置在所述摇臂中并且能够切换所述摇臂的连接和断开 以及设置在发动机主体中用于使所述自由摇臂朝向凸轮轴弹性偏置的空动机构，其中所述空动机构（38）设置在设置在气缸盖（2）上方的支撑构件（37）中，以及 自由摇臂（26）设置在支撑构件（37）的下方。 这使得可以在摇臂（24至26）下面确保足够的空间。
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公开(公告)号：US4889085A
公开(公告)日：1989-12-26
申请号：US273459
申请日：1988-11-18
申请人： Toru Yagi , Yoshihiro Fujiyoshi , Takatoshi Aoki , Yasuhiro Urata
发明人： Toru Yagi , Yoshihiro Fujiyoshi , Takatoshi Aoki , Yasuhiro Urata
CPC分类号： F01L13/0031 , F01L1/16 , F01L9/025
摘要： A valve operating device for an internal combustion engine that includes a valve piston having one end facing into a damper chamber and the other end operatively coupled to an intake or exhaust valve which is spring-biased in a closing direction. A cam piston has one end operatively coupled to a cam drivable by a crankshaft and the other end disposed in a working oil chamber. A restriction mechanism uniformly restricts oil flow during final valve closing operation of the intake or exhaust valve until the valve is fully closed. The working oil chamber and damper chamber are held in communication with each other through the restriction mechanism. A bypass passage interconnects the damper chamber and the working oil chamber in bypassing relation to the restriction mechanism. A variable restriction mechanism is provided in the bypass passage capable of varying the area for oil flow according to valve closing characteristics required by the viscosity of working oil and operating conditions of the engine.
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公开(公告)号：US4862843A
公开(公告)日：1989-09-05
申请号：US206847
申请日：1988-06-15
IPC分类号： F01L1/344
CPC分类号： F01L1/34406 , F01L2009/0405 , Y10T74/2101 , Y10T74/2102
摘要： A valve timing control device includes a rotatable shaft, a housing including a timing wheel axially immovable but angularly movable with respect to the timing wheel, a piston disposed coaxially with the rotatable shaft and the timing wheel, a hydraulic chamber for applying a hydraulic pressure to move the piston axially, a servovalve disposed between the hydraulic pressure chamber and hydraulic pressure supply and release passages and comprising a sleeve and a spool, an actuator for axially moving the spool, and a phase adjusting mechanism operatively coupling the piston, the housing, and the rotatable shaft for varying angular relationship between the timing wheel and the rotatable shaft in response to axial movement of the piston. The actuator may be a hydraulic actuator or an electric actuator. The phase adjusting mechanism may comprise roller pins mounted on the piston and rollingly fitted in a guide groove defined in the rotatable shaft and a guide slot defined in the housing, or meshing helical teeth on the piston, the housing, and the rotatable shaft.
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公开(公告)号：US4919089A
公开(公告)日：1990-04-24
申请号：US273202
申请日：1988-11-17
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.
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8.发明授权Method of and apparatus for controlling valve operation in an internal combustion engine 失效用于控制内燃机中的阀门操作的方法和装置
公开(公告)号：US4873949A
公开(公告)日：1989-10-17
申请号：US273882
申请日：1988-11-18
CPC分类号： F01L1/34406 , F01L1/024 , F01L13/0031 , F01L9/025 , F01L2001/34446
摘要： A method and apparatus for controlling valve operation in an internal combustion engine having a crankshaft during with a cam for opening and closing an intake or exhaust valve which is spring-biased in a closing direction. The method comprises the steps of varying the angular phase of the crankshaft and the camshaft to control the timing of the opening of the valve and releasing the force applied by the cam to open the valve while it is being opened to control the timing of the closing of the intake or exhaust valve. The apparatus includes a phase control mechanism disposed between the crankshaft and the camshaft and a lift control mechanism disposed between the cam and the intake or exhaust valve. Both mechanisms are hydraulically operated and controlled in response to engine operating conditions.
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