-
公开(公告)号：US5085182A
公开(公告)日：1992-02-04
申请号：US587939
申请日：1990-09-25
申请人： Makoto Nakamura , Shigeru Sakuragi , Yutaka Matayoshi , Keiichi Maekawa , Seinosuke Hara , Shoji Morita
发明人： Makoto Nakamura , Shigeru Sakuragi , Yutaka Matayoshi , Keiichi Maekawa , Seinosuke Hara , Shoji Morita
摘要： A main rocker arm which is pivotally mounted on a rocker shaft has one or more sub-rocker arms pivotally mounted thereon. The main rocker arm is arranged to synchronously open and close two poppet valves. Each of the sub-rocker arms can be selectively locked to the main one by way of hydraulically operated plunger arrangements. The main rocker arm is provided with a roller type cam follower which follows a low speed cam. The sub-rocker arms are provided with followers which engage high or very high speed cams. Lost motion springs which maintain the sub-rocker arms in contact with the cams are mounted on the main rocker arm.
-
公开(公告)号：US5033420A
公开(公告)日：1991-07-23
申请号：US572082
申请日：1990-08-24
摘要： Main and sub-rocker arms mounted on a common shaft and pivotally supported on a cylinder head by a pivot formed at the end of an adjust screw which is provided at one of the main rocker arm. The main and sub-rocker arms are motivated by cams suited for low engine speed and high engine speed operation respectively. A hydraulically operated interlocking device which selectively locks the main and sub-rocker arms together, is controlled by a supply of hydraulic fluid by way of a passage structure formed in the adjust screw and a pivot seat in which the pivot is received.
-
3.发明授权Rocker arm arrangement for variable valve timing type internal combustion engine valve train 失效可变气门正时型内燃机气门机构的摇臂装置
公开(公告)号：US5046462A
公开(公告)日：1991-09-10
申请号：US593202
申请日：1990-10-05
摘要： A rocker arm is pivotally mounted on a rocker shaft. A first cam follower such as a roller is provided on the rocker arm and arranged to cooperate with a low speed cam. A second cam follower is reciprocally mounted on the rocker arm and arranged to cooperate with a high speed cam. A locking arrangement for selective locking the second cam follower in place comprises three plungers which are each reciprocatively received in their own bore. One of the bores is formed in the second cam follower while the other two are formed in the rocker arm. When hydraulic pressure is applied to one end of one of the plungers and the high and low speed cam followers are in engagement with the base circles of the respective high and low speed cams, the plungers are axialy displaced against a return spring in a manner two project into an adjacent bore and induce interlocking.
摘要翻译： 摇臂枢转安装在摇臂轴上。 第一凸轮从动件（例如辊）设置在摇臂上并且布置成与低速凸轮配合。 第二凸轮从动件可往复地安装在摇臂上并与高速凸轮配合。 用于将第二凸轮从动件选择性地锁定就位的锁定装置包括三个柱塞，每个柱塞在它们自己的孔中往复运动。 其中一个孔形成在第二凸轮从动件中，而另外两个形成在摇臂中。 当液压压力施加到其中一个柱塞的一端并且高低速凸轮从动件与相应的高速和低速凸轮的基圆相接合时，柱塞相对于复位弹簧以两个方式轴向地移位 进入相邻的孔并引发互锁。
-
4.发明授权公开(公告)号：US08401721B2
公开(公告)日：2013-03-19
申请号：US12960912
申请日：2010-12-06
IPC分类号： B60L9/00
CPC分类号： F01L1/3442 , F01L13/0026 , F01L2001/34453 , F01L2001/34483
摘要： An internal combustion engine is provided with a valve lift varying mechanism for intake valves and a valve phase varying mechanism for exhaust valves. A controller performs a control operation in response to a request to pause at least one cylinder while the engine is in operation. The control operation includes: a first operation of setting an intake valve lift to a zero-lift setpoint by the valve lift varying mechanism; and a second operation of setting an exhaust valve phase by the valve phase varying mechanism so as to set an exhaust valve opening timing to a first timing setpoint on an advance side of bottom dead center and set an exhaust valve closing timing to a second timing setpoint on a retard side of bottom dead center. The first and second timing setpoints are closer to top dead center than to bottom dead center.
摘要翻译： 内燃机设置有用于进气门的气门升程改变机构和用于排气阀的阀相变机构。 控制器响应于在发动机运行时暂停至少一个气缸的请求而执行控制操作。 控制操作包括：通过气门升程改变机构将进气门升程设定为零升程设定点的第一操作; 以及通过所述阀相变机构设定排气阀相位的第二操作，以将排气门打开正时设定在下死点的前进侧上的第一定时设定点，并将排气门关闭定时设定为第二定时设定点 在下死点的延迟侧。 第一和第二定时设定点比死点中心更靠近上死点。
-
公开(公告)号：US08006658B2
公开(公告)日：2011-08-30
申请号：US12360309
申请日：2009-01-27
申请人： Makoto Nakamura , Noriomi Hosaka , Mikihiro Kajiura , Yoshihiko Yamada , Seiji Tsuruta , Seinosuke Hara
发明人： Makoto Nakamura , Noriomi Hosaka , Mikihiro Kajiura , Yoshihiko Yamada , Seiji Tsuruta , Seinosuke Hara
IPC分类号： F01L1/34
CPC分类号： F01L13/0026 , F01L2013/0073 , F01L2820/032 , Y10T74/2107
摘要： A variable valve actuation apparatus of an internal combustion engine has a multinodular-link motion converter, to vary at least a working angle. A position of rotation of a control shaft, variably adjusting the attitude of the motion converter, is set, so that, at a peak lift during a valve opening period, an angle γ2 between an extension line of a line segment connecting a first fulcrum corresponding to a drive-eccentric-cam center and a second fulcrum provided on a rocker arm and a line segment connecting the second fulcrum and a third fulcrum provided on the rocker arm at a position different from the second fulcrum at a middle working-angle control mode is less than both an angle γ1 between the two line segments at a minimum working-angle control mode and an angle γ3 between the two line segments at a maximum working-angle control mode.
摘要翻译： 内燃机的可变气门致动装置具有多节点连杆运动转换器，以至少改变工作角度。 设定控制轴的旋转位置，可变地调节运动转换器的姿态，使得在阀打开期间的峰值升程中，连接第一支点对应的线段的延长线之间的角度γ2 驱动偏心凸轮中心和设置在摇臂上的第二支点和连接第二支点的线段和设置在摇臂上的第三支点处于与第二支点不同的位置处于中间工作角度控制模式 在最小工作角度控制模式下两个线段之间的角度γ1小于两个线段之间的角度γ3，并且在最大工作角度控制模式下小于两个线段之间的角度γ3。
-
公开(公告)号：US07246578B2
公开(公告)日：2007-07-24
申请号：US11055096
申请日：2005-02-11
IPC分类号： F01L1/34
CPC分类号： F01L1/2405 , F01L1/185 , F01L1/267 , F01L13/0005 , F01L13/0026 , F01L13/0063 , F01L2013/0073 , F01L2105/00 , F01L2810/02 , F01L2820/032
摘要： A valve operating mechanism of an internal combustion engine, comprises a drive cam rotatable with and eccentric to a drive shaft; a link arm having a circular opening in which the drive cam is rotatably received, so that rotation of drive cam about an axis of the drive shaft produces a swing movement of the link arm; a pair of swing cams swingably disposed on the drive shaft at both sides of the drive cam, the swing cams being connected through a movement transmission mechanism to the link arm to be swung when the link arm is subjected to the swing movement; a pair of swing arms respectively actuated by the swing cams for carrying out an open/close operation of a pair of engine valves; a pair of spring retainers respectively provided by the pair of engine valves; and a pair of valve springs respectively held by the spring retainers and biasing the engine valves in a close direction. A lubricating oil passage is formed in the drive cam. The oil passage has one end exposed to an oil feeding passage formed in the drive shaft and the other end exposed to a minute clearance defined between a cylindrical outer surface of the drive cam and a cylindrical inner surface of the circular opening of the link arm.
摘要翻译： 一种内燃机的气门操作机构，包括可与驱动轴一起旋转并偏心的驱动凸轮; 具有圆形开口的连杆臂，驱动凸轮可旋转地被容纳在该开口中，使得驱动凸轮围绕驱动轴的轴线的旋转产生连杆臂的摆动运动; 一对摆动凸轮，其可摆动地设置在驱动凸轮的两侧的驱动轴上，当连杆臂受到摆动时，摆动凸轮通过运动传递机构连接到连杆臂上以摆动; 分别由摆动凸轮致动的一对摆臂，用于执行一对发动机气门的打开/关闭操作; 分别由一对发动机气门设置的一对弹簧保持器; 以及一对气门弹簧，分别由弹簧保持器保持并且沿着紧密的方向偏置发动机气门。 润滑油通道形成在驱动凸轮中。 油路的一端暴露于形成在驱动轴上的供油通道，另一端暴露在驱动凸轮的圆柱形外表面和连杆臂的圆形开口的圆柱形内表面之间限定的微小间隙。
-
公开(公告)号：US20060288972A1
公开(公告)日：2006-12-28
申请号：US11472254
申请日：2006-06-22
申请人： Seinosuke Hara , Makoto Nakamura
发明人： Seinosuke Hara , Makoto Nakamura
IPC分类号： F01L1/34
CPC分类号： F01L13/0063 , F01L1/143 , F01L1/185 , F01L1/20 , F01L1/2405 , F01L1/267 , F01L13/0026 , F01L2013/0068 , F01L2013/0073 , F01L2103/00 , F01L2105/00 , F01L2820/032
摘要： In a valve operating apparatus of an engine capable of varying a valve lift characteristic, rotary motion of a drive cam is converted through a motion-conversion linkage including a rocker arm into oscillating motion of a valve actuation member for operating an engine valve. Also provided is a control shaft whose angular position is adjusted depending on an engine operating condition for changing a linkage attitude. The valve actuation member has an arcuate portion curved to bypass the drive shaft. The control shaft has a coaxial shaft portion and an eccentric control cam. The control cam is a fulcrum of oscillating motion of the rocker arm and the coaxial shaft portion of the control shaft is a fulcrum of oscillating motion of the valve actuation member. The fulcrums are laid out in close proximity to each other.
摘要翻译： 在能够改变气门升程特性的发动机的气门操作装置中，驱动凸轮的旋转运动通过包括摇臂的运动转换联动器转换成用于操作发动机气门的阀致动构件的摆动运动。 还提供了一种控制轴，其根据用于改变联动姿态的发动机操作条件来调整其角度位置。 阀致动构件具有弯曲以绕过驱动轴的弓形部分。 控制轴具有同轴轴部和偏心控制凸轮。 控制凸轮是摇臂的摆动运动的支点，控制轴的同轴部分是阀致动构件的摆动运动的支点。 支点布置在彼此靠近的位置。
-
公开(公告)号：US20050178350A1
公开(公告)日：2005-08-18
申请号：US11055096
申请日：2005-02-11
IPC分类号： F01M1/06 , F01L1/00 , F01L1/02 , F01L1/04 , F01L1/18 , F01L1/24 , F01L1/34 , F01L1/46 , F01L3/10 , F01L13/00 , F01M9/08 , F01M9/10
CPC分类号： F01L1/2405 , F01L1/185 , F01L1/267 , F01L13/0005 , F01L13/0026 , F01L13/0063 , F01L2013/0073 , F01L2105/00 , F01L2810/02 , F01L2820/032
摘要： A valve operating mechanism of an internal combustion engine, comprises a drive cam rotatable with and eccentric to a drive shaft; a link arm having a circular opening in which the drive cam is rotatably received, so that rotation of drive cam about an axis of the drive shaft produces a swing movement of the link arm; a pair of swing cams swingably disposed on the drive shaft at both sides of the drive cam, the swing cams being connected through a movement transmission mechanism to the link arm to be swung when the link arm is subjected to the swing movement; a pair of swing arms respectively actuated by the swing cams for carrying out an open/close operation of a pair of engine valves; a pair of spring retainers respectively provided by the pair of engine valves; and a pair of valve springs respectively held by the spring retainers and biasing the engine valves in a close direction. A lubricating oil passage is formed in the drive cam. The oil passage has one end exposed to an oil feeding passage formed in the drive shaft and the other end exposed to a minute clearance defined between a cylindrical outer surface of the drive cam and a cylindrical inner surface of the circular opening of the link arm.
摘要翻译： 一种内燃机的气门操作机构，包括可与驱动轴一起旋转并偏心的驱动凸轮; 具有圆形开口的连杆臂，驱动凸轮可旋转地被容纳在该开口中，使得驱动凸轮围绕驱动轴的轴线的旋转产生连杆臂的摆动运动; 一对摆动凸轮，其可摆动地设置在驱动凸轮的两侧的驱动轴上，当连杆臂受到摆动时，摆动凸轮通过运动传递机构连接到连杆臂上以摆动; 分别由摆动凸轮致动的一对摆臂，用于执行一对发动机气门的打开/关闭操作; 分别由一对发动机气门设置的一对弹簧保持器; 以及一对气门弹簧，分别由弹簧保持器保持并且沿着紧密的方向偏置发动机气门。 润滑油通道形成在驱动凸轮中。 油路的一端暴露于形成在驱动轴上的供油通道，另一端暴露在驱动凸轮的圆柱形外表面和连杆臂的圆形开口的圆柱形内表面之间限定的微小间隙。
-
公开(公告)号：US06499454B2
公开(公告)日：2002-12-31
申请号：US09908924
申请日：2001-07-20
IPC分类号： F01L102
CPC分类号： F01L13/0026 , F01L13/0015 , F01L2013/0073
摘要： A VVA apparatus includes a driving shaft, a crank cam arranged at an outer periphery of the driving shaft, a VO cam swingably supported by the driving shaft to actuate an engine valve, and a rocker arm having a first arm swingably mounted to an eccentric control cam at a first pivotal point and a second arm rotatably mounted to the crank cam and the VO cam at a second pivotal point and a third pivotal point, respectively, the rocker arm transmitting a driving force of the crank cam to the VO cam. The valve lift produced by the VO cam is varied by changing a rocking fulcrum of the rocker arm through rotation control of the control cam, and the second pivotal point and the third pivotal point are located on the side of the second arm of the rocker arm.
摘要翻译： VVA装置包括驱动轴，布置在驱动轴的外周的曲柄凸轮，由所述驱动轴可摆动地支撑以致动发动机气门的VO凸轮;以及摇臂，所述摇臂具有可摆动地安装到偏心控制器 凸轮在第一枢转点处，第二臂分别可旋转地安装到曲柄凸轮和VO凸轮在第二枢转点和第三枢转点处，摇臂将曲柄凸轮的驱动力传递到VO凸轮。 由VO凸轮产生的气门升程通过通过控制凸轮的旋转控制改变摇臂的摆动支点而改变，第二枢转点和第三枢转点位于摇臂的第二臂的一侧 。
-
公开(公告)号：US6123053A
公开(公告)日：2000-09-26
申请号：US316213
申请日：1999-05-21
CPC分类号： F01L13/0021 , F01L13/0026
摘要： A variable valve actuation apparatus incorporates a mechanism, mounted to a control shaft, to convert rotational motion of a camshaft into pivotal motion of a valve operating cam. The mechanism has different states corresponding to varying angular positions which the control shaft is adjustable to, respectively, The mechanism is continuously variable in state to one of the different states in response to a shift of the control shaft to one of the varying angular positions. The mechanism is also operative to vary the valve operating cam, in position, relative to the associated cylinder valve in response to a shift between the different states.
摘要翻译： 可变气门致动装置包括安装到控制轴的机构，以将凸轮轴的旋转运动转换成阀操作凸轮的枢转运动。 该机构具有与变化的角位置相对应的不同状态，控制轴可分别调节。响应于控制轴移动到变化的角位置之一，机构可以将状态连续地变化到不同状态之一。 该机构还可操作以响应于不同状态之间的偏移而相对于相关联的气缸阀门改变阀操作凸轮的位置。
-
-
-
-
-
-
-
-
-
搜索结果
387 条记录 (耗时 0.037 秒)
