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公开(公告)号：US20080067865A1
公开(公告)日：2008-03-20
申请号：US11901824
申请日：2007-09-19
申请人： Albert C. Wong , Tom C. Wong , Rick L. Lincoln , James L. Davison
发明人： Albert C. Wong , Tom C. Wong , Rick L. Lincoln , James L. Davison
CPC分类号： B62D5/075 , B60T13/165 , B62D5/07
摘要： A vehicular hydraulic system having a hydraulic pump, a first hydraulic application and a second hydraulic application arranged in series. A relief valve is arranged parallel with the second application to allow fluid to bypass the second application when fluid pressure upstream of the second application exceeds a threshold value. The first and second applications may be a brake assist device and a steering gear assist device. The hydraulic system may also include a priority valve for diverting a portion of the fluid flow to the second application when the pressure upstream of the first application exceeds a threshold value. The threshold value for the first application may be greater than the threshold value for the second application. The hydraulic system may include a pump having a discharge rate that falls within a predefined range. A check valve may also be arranged parallel with the relief valve and second application.
摘要翻译： 一种具有液压泵，第一液压应用和第二液压应用的车辆液压系统。 安全阀与第二应用平行布置，以便在第二应用的上游流体压力超过阈值时允许流体绕过第二应用。 第一和第二应用可以是制动辅助装置和舵机辅助装置。 当第一应用的上游压力超过阈值时，液压系统还可以包括优先阀，用于将一部分流体流转向第二应用。 第一应用的阈值可以大于第二应用的阈值。 液压系统可以包括具有落在预定范围内的排出速率的泵。 止回阀也可以与安全阀和第二应用平行布置。
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公开(公告)号：US07739942B2
公开(公告)日：2010-06-22
申请号：US11901863
申请日：2007-09-19
IPC分类号： F15B13/06
CPC分类号： F15B13/022 , B60T13/162 , Y10T137/2605
摘要： A vehicular hydraulic system with a pump and first and second hydraulic applications arranged in series. The fluid upstream of the first application may be elevated to a first threshold pressure value. A pressure-dump valve is disposed downstream of the first application and fluid entering the valve flows through an inlet port, primary flow channel and outlet port of the valve to the second hydraulic application. The valve includes a valve member that axially slides within an elongate valve chamber, partitioning the primary flow channel from a low pressure volume. The valve also includes a low pressure port and a bypass port that diverts fluid past the second application. The valve member is biased into a position wherein fluid is diverted through the bypass port when the pressure in the primary flow channel exceeds a second threshold value. The first threshold value is greater than the second threshold value.
摘要翻译： 具有泵的车辆液压系统和第一和第二液压应用串联布置。 第一应用上游的流体可以升高到第一阈值压力值。 压力释放阀设置在第一应用的下游，并且进入阀的流体流过阀的入口，主流道和出口到第二液压应用。 阀包括在细长阀室内轴向滑动的阀构件，其将主流动通道从低压容积分隔开。 该阀还包括一个低压端口和一个旁路端口，使流体转移到第二个应用中。 当主流道中的压力超过第二阈值时，阀构件被偏压到其中流体通过旁通口转向的位置。 第一阈值大于第二阈值。
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公开(公告)号：US20080066463A1
公开(公告)日：2008-03-20
申请号：US11901864
申请日：2007-09-19
CPC分类号： B60T13/162 , Y10T137/2605
摘要： A vehicular hydraulic system having a hydraulic pump and first and second hydraulic applications arranged in series. A dual relief valve defines first and second flow channels, a passageway and a bypass port. The first flow channel is disposed between the hydraulic pump and the first hydraulic application and the second flow channel is disposed between the first hydraulic application and the second hydraulic application. A first valve member controls fluid flow through the passageway and allows fluid flow from the first to the second flow channel through the passageway when fluid pressure within the first flow channel exceeds a first threshold pressure. A second valve member controls fluid flow through the bypass port and allows fluid flow from the second flow channel to a return line through the bypass port when fluid pressure within the second flow channel exceeds a second threshold pressure.
摘要翻译： 一种具有液压泵和第一和第二液压应用串联布置的车辆液压系统。 双溢流阀限定第一和第二流动通道，通道和旁通端口。 第一流动通道设置在液压泵和第一液压应用之间，第二流动通道设置在第一液压应用和第二液压应用之间。 当第一流动通道内的流体压力超过第一阈值压力时，第一阀构件控制通过通道的流体流动并允许流体从第一流动通道流过通道，通过通道。 当第二流动通道内的流体压力超过第二阈值压力时，第二阀构件控制通过旁通端口的流体流动，并且允许流体从第二流动通道流过通过旁通端口的返回管线。
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公开(公告)号：US07779744B2
公开(公告)日：2010-08-24
申请号：US11901822
申请日：2007-09-19
IPC分类号： F15B13/06
CPC分类号： F15B13/022 , B60T13/161 , B60T13/168 , Y10T137/2605
摘要： A vehicular hydraulic system with a pump and first and second hydraulic applications arranged in series. A valve is disposed whereby fluid from the pump flows through an inlet port, primary flow channel and outlet port of the valve to the first hydraulic application. The valve includes a body and a valve member that axially slides within an elongate valve chamber, partitioning the primary flow channel from a low pressure volume. The valve also includes a low pressure port and a bypass port. The bypass port is sealed from fluid communication with the valve chamber in a first position and is in fluid communication with the primary flow channel when the valve member is biased into a second position by a threshold exceeding elevated fluid pressure in the primary flow channel. Fluid discharged from the bypass port is diverted past the first application to the second application.
摘要翻译： 具有泵的车辆液压系统和第一和第二液压应用串联布置。 设置阀，由此来自泵的流体流过阀的入口，主流路和出口到第一液压应用。 阀包括主体和阀构件，该阀构件在细长的阀室内轴向滑动，将主流动通道从低压容积分隔开。 该阀还包括一个低压端口和旁路端口。 旁路端口在第一位置处与阀室的流体连通密封，并且当阀构件被偏压到第二位置时超过主流动通道中的升高的流体压力的阈值而与主流动通道流体连通。 从旁路端口排出的流体经过第一个应用程序转移到第二个应用程序。
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公开(公告)号：US07730825B2
公开(公告)日：2010-06-08
申请号：US11901821
申请日：2007-09-19
IPC分类号： F15B13/06
CPC分类号： F15B11/162 , F15B2211/30585 , F15B2211/324 , F15B2211/4053 , F15B2211/50518 , F15B2211/55 , F15B2211/7142 , F15B2211/781 , Y10T137/7838
摘要： A vehicular hydraulic system having a pump, flow-splitting valve, first application and second application arranged in series. The flow-splitting valve diverts a portion of the primary fluid flow to the second application when the pressure exceeds a threshold value. A valve member disposed in the flow-splitting valve defines a pressure-reducing orifice that communicates fluid across the valve member. A one-way relief valve prevents fluid flow through the pressure-reducing orifice when the pressure in the valve is below the threshold value. When the pressure exceeds the threshold value, fluid flows through relief valve and the pressure reducing orifice resulting in the movement of the valve member and exposure of a bypass port to thereby divert a portion of the primary fluid flow to the second application. The relief valve may be selectively variable to thereby provide for the adjustment of the threshold value.
摘要翻译： 一种车辆液压系统，其具有串联布置的泵，分流阀，第一应用和第二应用。 当压力超过阈值时，分流阀将主流体流的一部分转移到第二应用。 设置在分流阀中的阀构件限定了一个减压孔，其连通流体穿过阀构件。 当阀门内的压力低于阀值时，单向泄压阀防止流体流过减压孔。 当压力超过阈值时，流体流过安全阀和减压孔导致阀构件的运动和旁路端口的暴露，从而将主要流体流的一部分转移到第二应用。 安全阀可以是有选择地变化的，从而提供阈值的调节。
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公开(公告)号：US07765915B2
公开(公告)日：2010-08-03
申请号：US11901864
申请日：2007-09-19
IPC分类号： F15B13/06
CPC分类号： B60T13/162 , Y10T137/2605
摘要： A vehicular hydraulic system having a hydraulic pump and first and second hydraulic applications arranged in series. A dual relief valve defines first and second flow channels, a passageway and a bypass port. The first flow channel is disposed between the hydraulic pump and the first hydraulic application and the second flow channel is disposed between the first hydraulic application and the second hydraulic application. A first valve member controls fluid flow through the passageway and allows fluid flow from the first to the second flow channel through the passageway when fluid pressure within the first flow channel exceeds a first threshold pressure. A second valve member controls fluid flow through the bypass port and allows fluid flow from the second flow channel to a return line through the bypass port when fluid pressure within the second flow channel exceeds a second threshold pressure.
摘要翻译： 一种具有液压泵和第一和第二液压应用串联布置的车辆液压系统。 双溢流阀限定第一和第二流动通道，通道和旁通端口。 第一流动通道设置在液压泵和第一液压应用之间，第二流动通道设置在第一液压应用和第二液压应用之间。 当第一流动通道内的流体压力超过第一阈值压力时，第一阀构件控制通过通道的流体流动并允许流体从第一流动通道流过通道，通过通道。 当第二流动通道内的流体压力超过第二阈值压力时，第二阀构件控制通过旁通端口的流体流动，并且允许流体从第二流动通道流过通过旁通端口的返回管线。
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7.发明授权公开(公告)号：US07739943B2
公开(公告)日：2010-06-22
申请号：US11901865
申请日：2007-09-19
IPC分类号： F15B13/06
CPC分类号： B60T13/162 , B60T13/168 , Y10T137/2605
摘要： A vehicular hydraulic system having a pump, first application, pressure-dump valve and second application arranged in series. The pressure-dump valve diverts a portion of the primary fluid flow past the second application when the pressure exceeds a threshold value. A valve member in the pressure-dump valve defines a pressure-reducing orifice that communicates fluid across the valve member. A check valve prevents flow through the pressure-reducing orifice when the pressure in the valve is below the threshold value. When the pressure exceeds the threshold value, fluid flows through check valve and the pressure reducing orifice resulting in the movement of the valve member and exposure of a bypass port thereby diverting a portion of the primary fluid flow past the second application. The check valve may be selectively variable to provide for the adjustment of the threshold value. A priority valve may also be provided upstream of the first application.
摘要翻译： 一种车辆液压系统，其具有泵，第一应用，压力释放阀以及串联布置的第二应用。 当压力超过阈值时，压力释放阀将主流体流的一部分转过第二应用。 减压阀中的阀构件限定了一个减压孔口，该孔口将流体跨越阀构件连通。 当阀中的压力低于阈值时，止回阀防止流过减压孔。 当压力超过阈值时，流体流过止回阀和减压孔，导致阀构件的运动和旁路口的暴露，从而使主要流体流的一部分转过第二应用。 止回阀可以选择性地变化以提供阈值的调整。 也可以在第一应用的上游提供优先阀。
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公开(公告)号：US20080066990A1
公开(公告)日：2008-03-20
申请号：US11901949
申请日：2007-09-19
IPC分类号： B62D5/07 , B60T13/128
CPC分类号： B62D5/07 , B60T13/145 , B62D5/075
摘要： A vehicular hydraulic system having a hydraulic pump, an optional flow-splitting valve, a first hydraulic application, a pressure reducing valve and a second hydraulic application arranged in series along a primary flow path. When the pressure in the primary flow path between the pump and first application is elevated to a first threshold value, the flow-splitting valve, if present, splits the fluid discharged by the pump into a first fluid flow communicated to the primary flow path upstream of the first application and a second fluid flow communicated to the primary flow path between the first application and the pressure-reducing valve. The pressure reducing valve limits the maximum pressure of the fluid discharged therefrom to a second threshold value wherein the first threshold value is greater than the second threshold value. The first and second hydraulic applications may take the form of a brake booster and a steering gear, respectively.
摘要翻译： 一种车辆液压系统，其具有液压泵，可选的分流阀，第一液压应用，减压阀和沿着主流路串联布置的第二液压应用。 当泵和第一应用之间的主流路中的压力升高到第一阈值时，分流阀（如果存在）将由泵排出的流体分裂成与主流道上游连通的第一流体流 并且第二流体流与第一应用和减压阀之间的主流路连通。 减压阀限制从其排出的流体的最大压力到第二阈值，其中第一阈值大于第二阈值。 第一和第二液压应用可以分别采取制动助力器和舵机的形式。
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公开(公告)号：US20080066462A1
公开(公告)日：2008-03-20
申请号：US11901863
申请日：2007-09-19
CPC分类号： F15B13/022 , B60T13/162 , Y10T137/2605
摘要： A vehicular hydraulic system with a pump and first and second hydraulic applications arranged in series. The fluid upstream of the first application may be elevated to a first threshold pressure value. A pressure-dump valve is disposed downstream of the first application and fluid entering the valve flows through an inlet port, primary flow channel and outlet port of the valve to the second hydraulic application. The valve includes a valve member that axially slides within an elongate valve chamber, partitioning the primary flow channel from a low pressure volume. The valve also includes a low pressure port and a bypass port that diverts fluid past the second application. The valve member is biased into a position wherein fluid is diverted through the bypass port when the pressure in the primary flow channel exceeds a second threshold value. The first threshold value is greater than the second threshold value.
摘要翻译： 具有泵的车辆液压系统和第一和第二液压应用串联布置。 第一应用上游的流体可以升高到第一阈值压力值。 压力释放阀设置在第一应用的下游，并且进入阀的流体流过阀的入口，主流道和出口到第二液压应用。 阀包括在细长阀室内轴向滑动的阀构件，其将主流动通道从低压容积分隔开。 该阀还包括一个低压端口和一个旁路端口，使流体转移到第二个应用中。 当主流道中的压力超过第二阈值时，阀构件被偏压到其中流体通过旁通口转向的位置。 第一阈值大于第二阈值。
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公开(公告)号：US20080067864A1
公开(公告)日：2008-03-20
申请号：US11901823
申请日：2007-09-19
申请人： Albert C. Wong , Tom C. Wong , Rick L. Lincoln , James L. Davison
发明人： Albert C. Wong , Tom C. Wong , Rick L. Lincoln , James L. Davison
CPC分类号： B62D5/07 , B60T13/165 , B62D5/075
摘要： A vehicular hydraulic system having a hydraulic pump, a first hydraulic application, a second hydraulic application and a hydraulic reservoir arranged in series. A check valve is positioned to allow the flow of fluid from a point between the second hydraulic application and the pump to a point upstream of the second hydraulic application when the fluid flow upstream of the second application has been significantly reduced. The first and second applications may be a hydraulic brake assist device and a steering gear assist device. The use of such a check valve may also be employed with a hydraulic system having a priority valve for diverting a portion of the fluid flow to the second application when the pressure upstream of the first application is elevated above a threshold value. The hydraulic system may also employ a pump that has a discharge rate that falls within a predefined range.
摘要翻译： 一种车辆液压系统，具有液压泵，第一液压应用，第二液压应用和串联布置的液压油箱。 止回阀被定位成当第二应用程序的上游的流体流已被显着地减小时允许流体从第二液压应用和泵之间的点流动到第二液压应用的上游点。 第一和第二应用可以是液压制动辅助装置和舵机辅助装置。 当第一应用的上游压力升高到高于阈值时，这种止回阀的使用也可以用于具有优先阀的液压系统，用于将一部分流体流转向第二应用。 液压系统还可以使用具有落在预定范围内的排出速率的泵。
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