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公开(公告)号：US5197421A
公开(公告)日：1993-03-30
申请号：US919741
申请日：1992-07-27
申请人： Seinosuke Hara
发明人： Seinosuke Hara
CPC分类号： F01L1/34406 , F02B2275/18 , Y10T74/2101 , Y10T74/2102
摘要： A valve timing control apparatus comprises a rotary member drivingly connected to the crankshaft for rotation with rotation of the crankshaft, and a drive mechanism for transmitting rotation of the rotary member to the camshaft. The drive mechanism includes a piston member provided for reciprocation to rotate the camshaft with respect to the rotary member. The piston member has a pressure chamber formed therein. The piston member is urged resiliently in a first direction. The piston member is movable in a second direction opposite to the first direction in response to a pressure introduced into the pressure chamber. The valve timing control apparatus also includes first and second conduit. The first conduit has a first outlet for connection to the pressure chamber. The second conduit has a second outlet for connection to the pressure chamber. The second outlet is spaced away from the first outlet in the first direction of movement of the piston member. First and second command signals are produced according to engine operating conditions. A pressure is introduced through the first conduit in the presence of the first command signal. A pressure is introduced through the second conduit in the presence of the second command signal.
摘要翻译： 气门正时控制装置包括驱动地连接到曲轴的旋转构件，用于随着曲轴的旋转而旋转;以及驱动机构，用于将旋转构件的旋转传递到凸轮轴。 驱动机构包括设置用于使凸轮轴相对于旋转构件旋转的往复运动的活塞构件。 活塞构件具有形成在其中的压力室。 活塞构件沿第一方向弹性地推动。 响应于引入压力室的压力，活塞构件可以在与第一方向相反的第二方向上移动。 气门正时控制装置还包括第一和第二导管。 第一导管具有用于连接到压力室的第一出口。 第二导管具有用于连接到压力室的第二出口。 第二出口在活塞构件的第一运动方向上与第一出口间隔开。 第一和第二命令信号根据发动机工作条件产生。 在存在第一命令信号的情况下，通过第一导管引入压力。 在存在第二命令信号的情况下通过第二导管引入压力。
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公开(公告)号：US5189998A
公开(公告)日：1993-03-02
申请号：US914576
申请日：1992-07-20
申请人： Seinosuke Hara
发明人： Seinosuke Hara
CPC分类号： F01L13/0026 , F01L1/267 , F01L13/0063 , F02B1/04
摘要： A valve mechanism for internal combustion engines of a type having a plurality of intake or exhaust valves for each cylinder is shown. A unique arrangement is applied to the valve mechanism for permitting the cam shaft to be positioned above the intake (or exhaust) valves. With the arrangement, the freedom in layout of an associated ignition spark plug in the engine is increased.
摘要翻译： 示出了具有用于每个气缸的多个进气门或排气门的类型的内燃机的阀机构。 独特的布置被应用于阀机构，以允许凸轮轴定位在进气（或排气）阀的上方。 通过这种布置，发动机中相关的点火火花塞的布置自由度增加。
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83.发明授权Valve timing arrangement for internal combustion engine having multiple inlet valves per cylinder 失效内燃机的气门正时装置，每个气缸具有多个进气阀
公开(公告)号：US4759321A
公开(公告)日：1988-07-26
申请号：US877523
申请日：1986-06-23
申请人： Yasuo Matsumoto , Seinosuke Hara , Hiromichi Ofuji
发明人： Yasuo Matsumoto , Seinosuke Hara , Hiromichi Ofuji
CPC分类号： F02D13/0226 , F01L1/181 , F01L1/26 , F01L13/0005 , F01L13/0021 , F01L13/0026 , F02D13/023 , F02D13/0238 , F02D13/0257 , F02D13/0265 , F01L2800/00 , F01L2820/01 , F02B2275/20 , F02F1/4214 , F02F2001/245 , Y02T10/146 , Y02T10/18
摘要： At least one of two inlet valves provided per cylinder of a multi-cylinder internal combustion engine is operated using a variable valve timing device. This device is controlled in response to the load and rotational speed of the engine in a manner which reduces the lift of the valve at low engine speeds and stepwisely increases the same as the engine moves from one mode of operation to the other. In the event that only one valve is controlled this valve is selected to be the one other than that which generates swirl in the combustion chamber.
摘要翻译： 使用可变气门正时装置来操作多缸内燃机每缸提供的两个入口阀中的至少一个。 响应于发动机的负载和转速以这种方式控制该装置，该方式可以在低发动机转速时减小阀的升程，并且与发动机从一种操作模式移动到另一种运行方式相同地逐步增加。 在仅控制一个阀门的情况下，该阀被选择为在燃烧室中产生涡流的阀门。
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公开(公告)号：US5996540A
公开(公告)日：1999-12-07
申请号：US55284
申请日：1998-04-06
申请人： Seinosuke Hara
发明人： Seinosuke Hara
CPC分类号： F01L13/0026 , F01L1/12 , F01L13/0063
摘要： A variable valve timing and lift system comprises a camshaft having a rotary cam and a valve operating (VO) cam, and a control rod having an integral portion. The integral portion in the form of an eccentric cam supports a rocker arm. The rotary cam is fixed to the camshaft. The VO cam is in contact with a valve lifter for a cylinder valve of an engine. A torsion spring winds about the camshaft to apply a bias to the VO cam. The rocker arm has a first arm cooperating with the rotary cam and a second arm cooperating with a projecting radial lever of the VO cam. Under the action of the torsion spring, the lever of the VO cam is held in engagement with the second arm of the rocker arm and the second arm of the rocker arm is held in engagement with the rotary cam.
摘要翻译： 可变气门正时和提升系统包括具有旋转凸轮和阀操作（VO）凸轮的凸轮轴和具有整体部分的控制杆。 偏心凸轮形式的整体部分支撑摇臂。 旋转凸轮固定在凸轮轴上。 VO凸轮与用于发动机的气缸阀的气门挺杆接触。 扭转弹簧围绕凸轮轴卷绕，以向VO凸轮施加偏压。 摇臂具有与旋转凸轮配合的第一臂和与VO凸轮的突出的径向杆配合的第二臂。 在扭簧的作用下，VO凸轮的杆被保持与摇臂的第二臂接合，并且摇臂的第二臂保持与旋转凸轮接合。
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公开(公告)号：US5794576A
公开(公告)日：1998-08-18
申请号：US803518
申请日：1997-02-20
CPC分类号： F01L1/267
摘要： An cylinder valve controlling apparatus comprises a first rocker arm and a second rocker arm cooperating with a middle lift cam and a low lift cam, respectively, to active two cylinder valves arranged for each of the engine cylinders, respectively. The apparatus further comprises a free rocker arm cooperating with a high lift cam. During engine operation at low speeds, the first rocker arm activates one of the cylinder valves in accordance with the profile of the middle lift cam, while the second rocker arm activates the other cylinder valve in accordance with the profile of the low lift cam. During engine operation at middle speeds, a coupling including a first lever establish drive connection between the first and second rocker arms and thus the first and second rocker arms follow the profile of the middle cam. During engine operation at high speeds, with the first-mentioned coupling maintaining the drive connection, another coupling establishes drive connection between the free cam follower and the first rocker arm. Thus, the first and second rocker arms activate the corresponding cylinder valves in accordance with the profile of the high lift cam.
摘要翻译： 气缸阀控制装置包括分别与中间提升凸轮和低升程凸轮配合的第一摇臂和第二摇臂，分别连接到为每个发动机气缸配置的有效的两个气缸阀。 该装置还包括与高提升凸轮配合的自由摇臂。 在低速发动机运行期间，第一摇臂根据中间提升凸轮的轮廓来启动气缸中的一个，而第二摇臂根据低升程凸轮的轮廓启动另一个气缸阀。 在中速发动机运行期间，包括第一杆的联接器在第一和第二摇臂之间建立驱动连接，从而使第一和第二摇臂沿着中间凸轮的轮廓。 在发动机高速运转时，首先提到的联轴器保持驱动连接，另一个联轴器建立了自由凸轮从动件与第一摇臂之间的驱动连接。 因此，第一和第二摇臂根据高升程凸轮的轮廓启动对应的气缸阀。
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公开(公告)号：US5553573A
公开(公告)日：1996-09-10
申请号：US510561
申请日：1995-08-02
申请人： Seinosuke Hara , Naoki Tomisawa
发明人： Seinosuke Hara , Naoki Tomisawa
CPC分类号： F02D13/0234 , F01L1/356 , F02D13/0261 , F02B2075/027 , Y02T10/18 , Y10T74/2102
摘要： A control system for a four-cycle internal combustion engine controls a cam drive mechanism for an intake valve such that a cam of the cam drive mechanism maintains a valve open duration of the intake valve at a short valve open duration in response to a shift from engine operation at low speed with low load to engine operation at low speed with high load, and the cam increases the valve open duration of the intake valve in response to a shift from engine operation at low speed with low load to engine operation at low speed with middle load that is higher than the low load but lower than the high load.
摘要翻译： 用于四冲程内燃机的控制系统控制用于进气门的凸轮驱动机构，使得凸轮驱动机构的凸轮响应于从阀门打开持续时间保持阀打开持续时间短 发动机低速运转，低负荷运转，发动机低负荷运转，凸轮增加进气阀的开阀持续时间，以适应低速低发动机低速发动机低速运转 中负荷高于低负荷但低于高负荷。
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公开(公告)号：US5452694A
公开(公告)日：1995-09-26
申请号：US380034
申请日：1995-01-30
申请人： Seinosuke Hara
发明人： Seinosuke Hara
CPC分类号： F01L1/267
摘要： A camshaft supported in an engine cylinder head structure has a low speed (lift) cam lobe and a high speed (lift) cam lobe. A rocker arm is supported by a hydraulic lash adjuster or a rocker shaft for pivotal motion and has a sub-rocker shaft and a pin. The rocker arm is drivingly engages the low lift cam lobe. A free cam follower is supported by the sub-rocker shaft and drivingly engages the high lift cam lobe. A latch lever supported by the pin has a latch position wherein one end portion of the latch lever is in locking engagement with the free cam follower and a latch release position wherein the one end portion of the latch lever is out of engagement with the free cam follower. A hydraulic piston received in bore is in driving engagement with the opposite end portion of the latch lever to urge the latch lever against a latch lever release spring towards the latch position thereof. Hydraulic fluid communication between the bore and a hydraulic fluid passage of the cylinder head structure is established through the hydraulic lash adjuster or the rocker shaft.
摘要翻译： 支撑在发动机气缸盖结构中的凸轮轴具有低速（升降）凸轮凸角和高速（升力）凸轮凸角。 摇臂由液压间隙调节器或摇臂轴支撑，用于枢转运动，并具有副摇杆轴和销。 摇臂正在驱动地接合低升力凸轮凸角。 自由凸轮从动件由副摇杆支撑并且驱动地接合高升程凸轮凸角。 由销支撑的闩锁杆具有闩锁位置，其中闩锁杆的一个端部与自由凸轮从动件锁定接合，并且闩锁释放位置，其中闩锁杆的一个端部与自由凸轮脱离啮合 追随者 容纳在孔中的液压活塞与闩锁杆的相对端部驱动接合，以将闩锁杆推向闩锁杆释放弹簧朝向其闩锁位置。 通过液压间隙调节器或摇臂轴建立孔与气缸盖结构的液压流体通道之间的液压流体连通。
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公开(公告)号：US5297516A
公开(公告)日：1994-03-29
申请号：US965071
申请日：1992-10-22
申请人： Seinosuke Hara
发明人： Seinosuke Hara
CPC分类号： F01L1/267
摘要： An apparatus for actuating valves of an engine is disclosed. A cam shaft is supported by the engine and has at least one set of cams, e.g., two axially spaced low speed cams and a high speed cam between the low speed cams. A rocker shaft is supported by the engine. The rocker shaft supports a rocker arm for the valves. The rocker arm is driven by the low speed cams. The rocker arm has a sub-rocker shaft and a pin. A free cam follower is supported by the sub-rocker shaft and driven by the high speed cam. The apparatus comprises a mechanism including a lever supported by the pin of the rocker arm. The lever has a first position wherein the lever and the free cam follower are joined for attaining unitary motion of the free cam follower with the rocker arm. The lever has a second position wherein the lever and the free cam follower are separated for allowing relative motion of the free cam follower with respect to the rocker arm. The mechanism includes a hydraulic piston for urging the lever to the first position.
摘要翻译： 公开了一种用于致动发动机的阀的装置。 凸轮轴由发动机支撑并且具有至少一组凸轮，例如两个轴向间隔开的低速凸轮和在低速凸轮之间的高速凸轮。 发动机支撑摇臂轴。 摇臂轴支撑阀门的摇臂。 摇臂由低速凸轮驱动。 摇臂具有副摇杆轴和销。 自由凸轮从动件由副摇杆支撑并由高速凸轮驱动。 该装置包括一个机构，该机构包括由摇臂的销支撑的杠杆。 杠杆具有第一位置，其中杆和自由凸轮从动件被接合以实现自由凸轮从动件与摇臂的整体运动。 杠杆具有第二位置，其中杠杆和自由凸轮从动件被分离以允许自由凸轮从动件相对于摇臂的相对运动。 该机构包括用于将杆推向第一位置的液压活塞。
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公开(公告)号：US5195471A
公开(公告)日：1993-03-23
申请号：US811029
申请日：1991-12-20
申请人： Seinosuke Hara
发明人： Seinosuke Hara
CPC分类号： F01L1/34406 , F02B2275/18 , F02F7/006
摘要： A valve timing control system of an internal combustion engine having a camshaft for operating intake or exhaust valves. The valve timing control system is comprised of a cylindrical sprocket driven through a timing chain by a crankshaft of the engine. An arm is fixed to one end of the camshaft and located inside the sprocket in a manner to extend generally diametrically. An annular piston is movably disposed coaxially with the camshaft and inside the sprocket to define an oil pressure chamber. The piston is moved axially by controlling the oil pressure to be supplied to the oil pressure chamber, in accordance with an engine operating condition. At least three sliders are supported to the piston to move with the piston. Each slider has an inclined face which is in slidable contact with a side face of the arm. This inclined surface is adapted to push the arm to rotate around the axis of the camshaft when each slider is moved axially upon the axial movement of the piston. The rotation of the arm causes the camshaft to make its relative rotational movement to the driven sprocket, thereby changing the opening and closing timings of the intake or/and exhaust valves.
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90.发明授权
公开(公告)号：US4526142A
公开(公告)日：1985-07-02
申请号：US393082
申请日：1982-06-28
申请人： Seinosuke Hara , Shunichi Aoyama , Kazuyuki Miisho
发明人： Seinosuke Hara , Shunichi Aoyama , Kazuyuki Miisho
CPC分类号： F01L13/00 , F01L1/182 , F01L1/2405 , F01L13/0026 , F01L2001/188
摘要： The present invention features a variable valve timing arrangement having a zero valve clearance maintaining device which takes the form of either a springy finger-like extension provided on a valve timing control lever, which extension biases a rocker arm which operates the valve, against the valve stem until the rocker arm has been cammed to pivot by a predetermined amount; or an eccentric bush on which the control lever is mounted and a telescopic hydraulic cylinder arrangement which rotates the bush to press the lever against the rocker arm with a predetermined force adequate for maintain a zero valve clearance.
摘要翻译： 本发明的特征在于可变气门正时装置，其具有零阀间隙保持装置，该装置具有设置在气门正时控制杆上的弹性手指状延伸部的形式，该延伸部将使操作阀的摇臂偏压在阀 直到摇臂已经被凸轮枢转预定量; 或安装有控制杆的偏心衬套和可伸缩的液压缸装置，其可旋转衬套，以足以保持零阀间隙的预定力将杆压靠在摇臂上。
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