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公开(公告)号：US08142173B2
公开(公告)日：2012-03-27
申请号：US12469318
申请日：2009-05-20
申请人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
发明人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
CPC分类号： F04C2/3564 , F04C2/3442 , F04C14/226
摘要： In a variable displacement vane pump employing a cam ring, a pump rotor, and a plurality of vanes, each slidably fitted into the rotor, a biasing member is provided to force the cam ring in a direction that a geometric center of an inner peripheral surface of the cam ring and a rotation center of the rotor are spaced apart from each other. A force, by which the cam ring can be oscillated against the biasing member in accordance with a buildup of a pressure in a pump discharge portion, acts on the inner peripheral surface of the cam ring.
摘要翻译： 在采用凸轮环的可变排量叶片泵，泵转子和多个叶片，每个叶片可滑动地装配到转子中，设置有偏压构件以迫使凸轮环沿着内周表面的几何中心 并且转子的旋转中心彼此间隔开。 根据泵排出部分中的压力的积聚，凸轮环能够抵靠偏置构件摆动的力作用在凸轮环的内周面上。
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公开(公告)号：US20130164163A1
公开(公告)日：2013-06-27
申请号：US13615709
申请日：2012-09-14
申请人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
发明人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
IPC分类号： F04C2/00
CPC分类号： F04C2/344 , F04C2/348 , F04C14/226
摘要： A variable displacement pump includes: a first control oil chamber which moves a cam ring toward a direction against a biasing force of a biasing member when a discharge pressure is introduced thereinto; a second control oil chamber which acts a hydraulic pressure upon the cam ring by cooperating with the biasing force of the biasing member when hydraulic oil is introduced thereinto; a switching mechanism which switches between one state in which hydraulic oil whose pressure is decreased than a discharge pressure is introduced to the second control oil chamber from the discharge section and another state in which hydraulic oil is discharged from the second control oil chamber; and a control mechanism operated before an eccentricity of the cam ring becomes a minimum and which discharges a greater amount of hydraulic oil within the second control oil chamber as the discharge pressure becomes larger.
摘要翻译： 可变排量泵包括：第一控制油室，当排出压力被引入时，使凸轮环朝向抵抗偏置构件的偏压力的方向移动; 第二控制油室，当液压油被引入时，通过与偏置构件的偏置力协调来对凸轮环施加液压; 切换机构，其切换在压力低于排出压力的液压油从排出部引入到第二控制油室的一个状态和从第二控制油室排出液压油的状态; 并且在凸轮环的偏心度变得最小之前操作的控制机构，并且随着排出压力变大，排出第二控制油室内的更大量的液压油。
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公开(公告)号：US20110189043A1
公开(公告)日：2011-08-04
申请号：US13011972
申请日：2011-01-24
申请人： Yasushi WATANABE , Koji Saga , Hideaki Ohnishi
发明人： Yasushi WATANABE , Koji Saga , Hideaki Ohnishi
IPC分类号： F01C19/08
CPC分类号： F04C2/3446 , F01C19/08 , F04C14/22 , F04C15/06
摘要： A vane pump in which oil is drawn from at least one side, in an axial direction, of a cam ring and is discharged from at least one side, in the axial direction, of the cam ring, has a portion defined by a groove formed on an inner circumference surface of the cam ring. The groove extends along a circumferential direction of the inner circumference surface of the cam ring and is arranged in a position including a middle of an axial direction width on the inner circumference surface. The groove is arranged in an oil suction section or an oil discharge section of the cam ring.
摘要翻译： 一种叶片泵，其中油从凸轮环的轴向方向的至少一侧被拉出并从凸轮环的轴向的至少一侧排出，具有由形成的槽形成的部分 在凸轮环的内圆周表面上。 所述槽沿着所述凸轮环的内周面的圆周方向延伸，并且在所述内周面上配置在包括轴向宽度的中间的位置。 凹槽布置在凸轮环的吸油部或排油部中。
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公开(公告)号：US09004882B2
公开(公告)日：2015-04-14
申请号：US13441037
申请日：2012-04-06
申请人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
发明人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
CPC分类号： F04C2/3442 , F04C14/223 , F04C14/226 , F04C14/24 , F04C2270/58 , F04C2270/80
摘要： A variable displacement pump includes: a first urging member arranged to urge the cam ring in a direction to increase the eccentric amount; a second urging member arranged to urge the cam ring in a direction to decrease the eccentric amount; a control hydraulic chamber arranged to receive a discharge pressure, and thereby to move the cam ring against the urging force of the first urging member; and a hydraulic pressure introduction section configured to introduce the discharge pressure to the control hydraulic chamber when the discharge pressure becomes greater than a predetermined pressure which is in a range where the cam ring is movable against a resultant force of the urging forces of the first and second urging members, and where the cam ring is not movable only against the urging force of the first urging member.
摘要翻译： 可变排量泵包括：第一推动构件，其布置成沿着增大偏心量的方向推动凸轮环; 第二推动构件，其布置成沿着减小偏心量的方向推动所述凸轮环; 控制液压室，布置成接收排出压力，从而抵抗第一推动构件的推动力移动凸轮环; 以及液压引入部，其构成为，当所述排出压力变得大于所述凸轮环能够相对于所述第一和第二作用力的合力而移动的范围内的预定压力时，将排出压力引入所述控制液压室， 第二推动构件，并且其中凸轮环不能仅抵抗第一推动构件的推动力移动。
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公开(公告)号：US20110123379A1
公开(公告)日：2011-05-26
申请号：US12947084
申请日：2010-11-16
申请人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
发明人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
IPC分类号： F01C20/18
CPC分类号： F04C2/3442 , F04C14/226 , F04C15/0049 , F04C2270/12 , F04C2270/14
摘要： A variable displacement pump includes a pump structural member configured to change volumes of a plurality of working chambers by rotation of a rotor, so as to introduce oil through an inlet port into the working chambers and to discharge the oil through a discharge port, and further configured to oscillate a cam ring by a discharge pressure introduced into a control oil chamber. A first coil spring is provided to force the cam ring in a direction for increasing of a rate of change of the working-chamber volume. A second coil spring is provided to force the cam ring in a direction for decreasing of the rate of change of the working-chamber volume. The first and second coil springs are laid out on both sides of an arm portion of the cam ring in a manner so as to be opposed to each other.
摘要翻译： 可变排量泵包括泵结构构件，其构造成通过转子的旋转来改变多个工作室的体积，以便通过入口将油引入到工作室中并且通过排出口排出油，并且进一步 构造成通过引入到控制油室中的排出压力来摆动凸轮环。 设置第一螺旋弹簧以迫使凸轮环沿着增加工作室容积的变化率的方向。 提供第二螺旋弹簧以迫使凸轮环沿着减小工作室容积的变化率的方向。 第一和第二螺旋弹簧以彼此相对的方式布置在凸轮环的臂部的两侧。
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公开(公告)号：US20090291000A1
公开(公告)日：2009-11-26
申请号：US12469318
申请日：2009-05-20
申请人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
发明人： Koji Saga , Yasushi Watanabe , Hideaki Ohnishi
CPC分类号： F04C2/3564 , F04C2/3442 , F04C14/226
摘要： In a variable displacement vane pump employing a cam ring, a pump rotor, and a plurality of vanes, each slidably fitted into the rotor, a biasing member is provided to force the cam ring in a direction that a geometric center of an inner peripheral surface of the cam ring and a rotation center of the rotor are spaced apart from each other. A force, by which the cam ring can be oscillated against the biasing member in accordance with a buildup of a pressure in a pump discharge portion, acts on the inner peripheral surface of the cam ring.
摘要翻译： 在采用凸轮环的可变排量叶片泵，泵转子和多个叶片，每个叶片可滑动地装配到转子中，设置有偏压构件以迫使凸轮环沿着内周表面的几何中心 并且转子的旋转中心彼此间隔开。 根据泵排出部分中的压力的积聚，凸轮环能够抵靠偏置构件摆动的力作用在凸轮环的内周面上。
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公开(公告)号：US09109596B2
公开(公告)日：2015-08-18
申请号：US13615709
申请日：2012-09-14
申请人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
发明人： Hideaki Ohnishi , Koji Saga , Yasushi Watanabe
CPC分类号： F04C2/344 , F04C2/348 , F04C14/226
摘要： A variable displacement pump includes: a first control oil chamber which moves a cam ring toward a direction against a biasing force of a biasing member when a discharge pressure is introduced thereinto; a second control oil chamber which acts a hydraulic pressure upon the cam ring by cooperating with the biasing force of the biasing member when hydraulic oil is introduced thereinto; a switching mechanism which switches between one state in which hydraulic oil whose pressure is decreased than a discharge pressure is introduced to the second control oil chamber from the discharge section and another state in which hydraulic oil is discharged from the second control oil chamber; and a control mechanism operated before an eccentricity of the cam ring becomes a minimum and which discharges a greater amount of hydraulic oil within the second control oil chamber as the discharge pressure becomes larger.
摘要翻译： 可变排量泵包括：第一控制油室，当排出压力被引入时，使凸轮环朝向抵抗偏置构件的偏压力的方向移动; 第二控制油室，当液压油被引入时，通过与偏置构件的偏置力协调来对凸轮环施加液压; 切换机构，其切换在压力低于排出压力的液压油从排出部引入到第二控制油室的一个状态和从第二控制油室排出液压油的状态; 并且在凸轮环的偏心度变得最小之前操作的控制机构，并且随着排出压力变大，排出第二控制油室内的更大量的液压油。
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公开(公告)号：US08613610B2
公开(公告)日：2013-12-24
申请号：US12947084
申请日：2010-11-16
申请人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
发明人： Koji Saga , Hideaki Ohnishi , Yasushi Watanabe
CPC分类号： F04C2/3442 , F04C14/226 , F04C15/0049 , F04C2270/12 , F04C2270/14
摘要： A variable displacement pump includes a pump structural member configured to change volumes of a plurality of working chambers by rotation of a rotor, so as to introduce oil through an inlet port into the working chambers and to discharge the oil through a discharge port, and further configured to oscillate a cam ring by a discharge pressure introduced into a control oil chamber. A first coil spring is provided to force the cam ring in a direction for increasing of a rate of change of the working-chamber volume. A second coil spring is provided to force the cam ring in a direction for decreasing of the rate of change of the working-chamber volume. The first and second coil springs are laid out on both sides of an arm portion of the cam ring in a manner so as to be opposed to each other.
摘要翻译： 可变排量泵包括泵结构构件，其构造成通过转子旋转来改变多个工作室的体积，以便通过入口将油引入到工作室中并通过排出口排出油，并且进一步 构造成通过引入到控制油室中的排出压力来摆动凸轮环。 设置第一螺旋弹簧以迫使凸轮环沿着增加工作室容积的变化率的方向。 提供第二螺旋弹簧以迫使凸轮环沿着减小工作室容积的变化率的方向。 第一和第二螺旋弹簧以彼此相对的方式布置在凸轮环的臂部的两侧。
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公开(公告)号：US07704061B2
公开(公告)日：2010-04-27
申请号：US10984927
申请日：2004-11-10
申请人： Hideaki Ohnishi , Yasushi Watanabe , Shoji Morita
发明人： Hideaki Ohnishi , Yasushi Watanabe , Shoji Morita
CPC分类号： F04C15/0049 , F04C2/086 , F04C2/102 , F04C2250/102
摘要： An oil pump includes pump chambers each having a volume varied by engine drive and for pressurizing oil inhaled through an inlet port and discharge it through an outlet port, and a branch passage connected between upstream and downstream sides of the outlet port at branch and confluent points, wherein the branch passage in the vicinity of the confluent point is shifted in pulse-pressure phase with respect to the outlet port.
摘要翻译： 油泵包括泵室，每个泵室具有通过发动机驱动而变化的体积，并且用于对通过入口端口吸入的油进行加压，并通过出口排出;以及分支通道，其在分支和汇合点处连接在出口的上游侧和下游侧之间 其中，汇合点附近的分支通道相对于出口以脉冲压力相位移位。
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公开(公告)号：US20050106053A1
公开(公告)日：2005-05-19
申请号：US10985898
申请日：2004-11-12
申请人： Hideaki Ohnishi , Yasushi Watanabe , Shoji Morita
发明人： Hideaki Ohnishi , Yasushi Watanabe , Shoji Morita
CPC分类号： F04C15/0049 , F04C2/086 , F04C2/102
摘要： An oil pump to be installed to an engine of an automotive vehicle. The oil pump includes a section defining a suction port and a section defining a discharge port. A main unit of the oil pump has a section defining a plurality of pump chambers. Volume of each pump chamber continuously changes to increase and decrease under driving of the engine so as to pressurize oil sucked through the suction port and discharge the oil through the discharge port. A section defining an oil chamber to which the oil flows is provided such that the oil chamber has a vertically upper side which is communicated with the discharge port through a communicating hole.
摘要翻译： 一种安装在汽车发动机上的油泵。 油泵包括限定吸入口和限定排出口的部分的部分。 油泵的主单元具有限定多个泵室的部分。 每个泵室的容积在发动机驱动下连续地变化，以增加通过吸入口吸入的油并通过排出口排出油。 设置油流动的油室的部分设置成使得油室具有通过连通孔与排出口连通的竖直上侧。
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