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公开(公告)号：US08684702B2
公开(公告)日：2014-04-01
申请号：US12719147
申请日：2010-03-08
IPC分类号： F04B49/00
CPC分类号： F04C14/223 , F04C2/3442 , F04C14/226 , F04C2210/14
摘要： A variable displacement oil pump for an automotive engine. The oil pump includes a cam ring accommodating thereinside a pump element having a rotor. The cam ring is swingingly movably accommodated in a housing and biased in a direction to increase an eccentricity amount of the cam ring relative to the axis of the rotor by a biasing member. First and second pressure chambers are defined inside the housing by the outer peripheral section of the cam ring. The first pressure chamber is supplied with a discharge pressure to be applied to the cam ring to oppose to a biasing force of the biasing member. The second pressure chamber is supplied with the discharge pressure to be applied to the cam ring to assist the biasing force of the biasing member. Additionally, a control device is provided for controlling supply of the discharge pressure to the second pressure chamber.
摘要翻译： 一种用于汽车发动机的可变排量油泵。 油泵包括容纳在具有转子的泵元件的内部的凸轮环。 凸轮环可旋转地容纳在壳体中并且通过偏置构件沿着相对于转子的轴线增加凸轮环的偏心量的方向偏置。 第一和第二压力室通过凸轮环的外周部分限定在壳体的内部。 第一压力室被供给施加到凸轮环的排出压力，以抵抗偏置构件的偏置力。 第二压力室被供给要施加到凸轮环的排出压力以帮助偏置构件的偏置力。 另外，提供控制装置用于控制对第二压力室的排出压力的供给。
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公开(公告)号：US08545200B2
公开(公告)日：2013-10-01
申请号：US12719170
申请日：2010-03-08
CPC分类号： F04C14/226 , F04C2/3442 , F04C2210/14
摘要： Variable displacement oil pump includes a: rotor; vanes; cam ring; housing; biasing member biasing the cam ring in a direction enlarging an eccentricity between centers of the rotor and inner circumferential surface of the cam ring; a contact surface to contact with a cam ring outer circumferential surface via a biasing force applied to the cam ring by the biasing member; a control chamber separately formed by the contact surface and a swing fulcrum of the cam ring on a cam ring outer circumference when the contact surface contacts the cam ring outer circumferential surface, and causing the cam ring to swing against the biasing force of the biasing member by a pressure from a discharge portion to the control chamber; and a choking portion formed on the outer circumferential surface of the cam ring to maintain a pressure of the control chamber even when the cam ring swings.
摘要翻译： 变排量油泵包括：转子; 叶片 凸轮环 住房; 偏压构件沿着增大转子的中心和凸轮环的内周面之间的偏心的方向偏置凸轮环; 接触表面，其经由偏压构件施加到所述凸轮环的偏压力与凸轮环外周表面接触; 所述控制室在所述接触面与所述凸轮环的外周面接触时由所述接触面和所述凸轮环的摆动支点分别形成在所述凸轮环外周上，并且使所述凸轮环抵抗所述偏置构件的偏置力而摆动 通过从排出部分到控制室的压力; 以及形成在凸轮环的外周面上的阻塞部分，以便即使当凸轮环摆动时也保持控制室的压力。
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公开(公告)号：US20100232989A1
公开(公告)日：2010-09-16
申请号：US12719170
申请日：2010-03-08
IPC分类号： F04C14/22
CPC分类号： F04C14/226 , F04C2/3442 , F04C2210/14
摘要： A variable displacement oil pump includes a rotor; a plurality of vanes; a cam ring; a housing; a biasing member configured to biases the cam ring in a direction that enlarges an eccentricity between a rotation center of the rotor and a center of inner circumferential surface of the cam ring; a contact surface configured to become in contact with an outer circumferential surface of the cam ring by means of a biasing force applied to the cam ring by the biasing member; a control chamber separately formed by the contact surface and a swing fulcrum of the cam ring on an outer circumference of the cam ring when the contact surface is in contact with the outer circumferential surface of the cam ring, and configured to cause the cam ring to swing against the biasing force of the biasing member by a pressure introduced from a discharge portion to the control chamber; and a choking portion formed on the outer circumferential surface of the cam ring so as to maintain a pressure of the control chamber even when the cam ring swings.
摘要翻译： 可变排量油泵包括转子; 多个叶片; 凸轮环 房屋; 偏置构件，其构造成在所述转子的旋转中心与所述凸轮环的内周面的中心之间偏心的方向偏压所述凸轮环; 接触面，其被构造成通过由所述偏置构件施加到所述凸轮环的偏置力而与所述凸轮环的外周面接触; 所述控制室在所述接触面与所述凸轮环的外周面接触时，由所述接触面和所述凸轮环的摆动支点分别形成在所述凸轮环的外周上，并且构造成使所述凸轮环 通过从排出部分引导到控制室的压力来抵抗偏置构件的偏置力; 以及形成在凸轮环的外周面上的阻塞部，以便即使当凸轮环摆动时也保持控制室的压力。
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