公开(公告)号：US09206690B2

公开(公告)日：2015-12-08

申请号：US13444428

申请日：2012-04-11

申请人： Dai Niwata ,  Koji Saga

发明人： Dai Niwata ,  Koji Saga

IPC分类号： F04C14/22 ,  F01C21/10 ,  F01C21/08 ,  F04C2/344

CPC分类号： F01C21/108 ,  F01C21/0845 ,  F04C2/3442 ,  F04C14/226

摘要： A variable displacement pump includes: side walls provided on both sides of the cam ring in an axial direction; and an introduction passage which is formed on one of the separation walls across which the hydraulic chambers pass when the hydraulic chambers are moved from the suction portion to the discharge portion, which is arranged to shut off a connection between one of the hydraulic chambers and the control hydraulic chamber by an axial end surface of the cam ring when the cam ring is in a maximum eccentric state, and which is arranged to connect the one of the hydraulic chambers and the control hydraulic chamber by a movement of the cam ring in the direction to decrease the eccentric amount of the cam ring, and thereby to introduce the discharge pressure within the control hydraulic chamber to the one of the hydraulic chambers.

摘要翻译： 可变排量泵包括：在轴向方向上设置在凸轮环的两侧的侧壁; 以及引导通道，其形成在所述液压室当从所述抽吸部分移动到所述排放部分时所述液压室通过的一个隔离壁上，所述引导通道设置成切断所述液压室中的一个与所述液压室之间的连接， 当所述凸轮环处于最大偏心状态时，由所述凸轮环的轴向端面控制液压室，并且所述液压室被设置成通过所述凸轮环沿所述方向的运动来连接所述液压室和所述控制液压室中的一个 以减小凸轮环的偏心量，从而将控制液压室内的排出压力引导到液压室中的一个。

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。

公开(公告)号：US20130164162A1

公开(公告)日：2013-06-27

申请号：US13617391

申请日：2012-09-14

申请人： Koji SAGA

发明人： Koji SAGA

IPC分类号： F04C14/22

CPC分类号： F04C2/344 ,  F04C14/226

摘要： An oil pump includes first and second control chambers, a biasing mechanism, and a changeover mechanism. The changeover mechanism connects the first control chamber with a drain portion when a valving element is in a first position, introduces a discharge pressure into the first and second control chambers when the valving element reaches a second position, and drains oil of the second control chamber to the drain portion and introduces the discharge pressure into the first control chamber when the valving element reaches a third position. The changeover mechanism changes from the first position to the second position, when the discharge pressure becomes higher than a pressure level at which the cam ring can move against a set load of the biasing mechanism, and is lower than a pressure level at which a biasing force of the biasing mechanism is increased in a stepwise manner.

摘要翻译： 油泵包括第一和第二控制室，偏置机构和切换机构。 当阀元件处于第一位置时，切换机构将第一控制室与排水部分连接，当阀元件到达第二位置时，将排出压力引入第一和第二控制室，并且将第二控制室 到排水部分，并且当阀元件到达第三位置时，将排出压力引入第一控制室。 当排出压力变得高于凸轮环能够相对于偏置机构的设定负载移动的压力水平时，转换机构从第一位置变化到第二位置，并且低于压力水平 偏压机构的力以逐步的方式增加。

公开(公告)号：US20120301342A1

公开(公告)日：2012-11-29

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

IPC分类号： F04C14/22

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。

公开(公告)号：US20120213655A1

公开(公告)日：2012-08-23

申请号：US13251715

申请日：2011-10-03

申请人： Hideaki OHNISHI ,  Koji SAGA ,  Yasushi WATANABE

发明人： Hideaki OHNISHI ,  Koji SAGA ,  Yasushi WATANABE

IPC分类号： F04C14/22

CPC分类号： F04C2/3442 ,  F04C14/12 ,  F04C14/226 ,  F04C2210/206

摘要： An oil pump includes: a valve receiving hole including; a first port connected with the suction port, a second port connected with the switching port, a third port connected with the discharge port, and a discharge pressure introduction port arranged to receive the discharge pressure, a valve element arranged to switch a first state in which the second port and the third port are connected, and a second state in which the first port and the second port are connected; and an urging member arranged to urge the valve element toward the first end side, the pressure receiving area of the valve element and the urging force of the urging member being set so that the oil pump is switched from the first state to the second state when the pressure within the hydraulic fluid chambers to which the switching port is opened is a negative pressure.

摘要翻译： 油泵包括：阀接收孔，包括： 与吸入口连接的第一端口，与开关端口连接的第二端口，与排出口连接的第三端口和布置成接收排出压力的排出压力引入端口，布置成将第一状态切换到 第二端口和第三端口连接的第二状态和第一端口和第二端口连接的第二状态; 以及推动构件，其被设置成朝向第一端侧推动阀元件，阀元件的受压面积和施力构件的作用力被设定为使得油泵从第一状态切换到第二状态， 开关端口打开的液压流体室内的压力为负压。

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。

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

IPC分类号： F03C2/00 ,  F04C2/00 ,  F04C14/18 ,  F04C2/344 ,  F04C2/348 ,  F04C14/22

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。

公开(公告)号：US20080308062A1

公开(公告)日：2008-12-18

申请号：US12136796

申请日：2008-06-11

申请人： Shoji MORITA ,  Yasushi Watanabe ,  Koji Saga

发明人： Shoji MORITA ,  Yasushi Watanabe ,  Koji Saga

IPC分类号： F01M1/02

CPC分类号： F04C14/226 ,  F04C2/102 ,  F04C2/3442

摘要： A variable displacement pump includes: a pump section arranged to be driven by an internal combustion engine, and to discharge a lubricant introduced from an induction portion to a plurality of hydraulic chambers, through a discharge portion, by volume variations of the hydraulic chambers; a variable mechanism arranged to move a movable member by using the discharge pressure of the lubricant, and to vary volumes of the hydraulic chambers which are opened to the discharge portion; and an urging section arranged to urge the movable member in a direction to increase quantities of the volume variations of the hydraulic chambers, the urging section having a spring constant which increases as a movement distance of the movable member in a direction to decrease the quantities of the volume variations of the hydraulic chambers increases.

摘要翻译： 可变排量泵包括：泵部分，其布置成由内燃机驱动，并且通过液压室的体积变化通过排出部分将从诱导部分引入的润滑剂排出到多个液压室; 可变机构，其被布置成通过使用润滑剂的排出压力移动可动构件，并且改变对排出​​部分敞开的液压室的容积; 以及推动部，其被设置成沿着增加液压室的体积变化量的方向推动可动件，所述推动部具有弹簧常数，该弹簧常数随着可移动部件在减小数量的方向的移动距离而增加 液压室的体积变化增大。

公开(公告)号：US09243632B2

公开(公告)日：2016-01-26

申请号：US13617391

申请日：2012-09-14

申请人： Koji Saga

发明人： Koji Saga

IPC分类号： F04C14/26 ,  F04C2/344 ,  F04C14/22

CPC分类号： F04C2/344 ,  F04C14/226

摘要： An oil pump includes first and second control chambers, a biasing mechanism, and a changeover mechanism. The changeover mechanism connects the first control chamber with a drain portion when a valving element is in a first position, introduces a discharge pressure into the first and second control chambers when the valving element reaches a second position, and drains oil of the second control chamber to the drain portion and introduces the discharge pressure into the first control chamber when the valving element reaches a third position. The changeover mechanism changes from the first position to the second position, when the discharge pressure becomes higher than a pressure level at which the cam ring can move against a set load of the biasing mechanism, and is lower than a pressure level at which a biasing force of the biasing mechanism is increased in a stepwise manner.

摘要翻译： 油泵包括第一和第二控制室，偏置机构和切换机构。 当阀元件处于第一位置时，切换机构将第一控制室与排水部分连接，当阀元件到达第二位置时，将排出压力引入第一和第二控制室，并且将第二控制室 到排水部分，并且当阀元件到达第三位置时，将排出压力引入第一控制室。 当排出压力变得高于凸轮环能够相对于偏置机构的设定负载移动的压力水平时，转换机构从第一位置变化到第二位置，并且低于压力水平 偏压机构的力以逐步的方式增加。

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

IPC分类号： F01C20/18 ,  F01C1/00 ,  F04C28/18 ,  F04C14/18 ,  F04C2/00 ,  F04C18/00 ,  F03C2/00 ,  F03C4/00

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。