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公开(公告)号：US06836090B2
公开(公告)日：2004-12-28
申请号：US10464775
申请日：2003-06-19
IPC分类号： H02K2344
摘要： A brushless DC motor control system is arranged to control a command current indicative of a current to be supplied to the brushless motor on the basis of an estimated phase angle and an actual phase angle to control a current supplied to the brushless motor on the basis of an estimated phase angle and an actual phase angle, and to execute at least one of an estimated phase angle returning processing for returning the estimated phase angle and a current lowering processing for lowering a command current, when the estimated phase angle advances relative to the actual phase angle.
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公开(公告)号：US20080145259A1
公开(公告)日：2008-06-19
申请号：US11954910
申请日：2007-12-12
申请人： Yasuhito NAKAKUKI , Kaname Kidokoro , Tetsuo Abe , Toshimitsu Sakaki , Mitsuo Sasaki , Masakazu Kurata
发明人： Yasuhito NAKAKUKI , Kaname Kidokoro , Tetsuo Abe , Toshimitsu Sakaki , Mitsuo Sasaki , Masakazu Kurata
IPC分类号： F01C19/00
CPC分类号： F04C2/102 , F04C2/086 , F04C2230/60 , Y10T29/49236 , Y10T29/49895
摘要： An oil pump including a first housing having a rotation shaft insertion hole, a cam ring, a pump element, a rotation shaft rotatably extending through the rotation shaft insertion hole, a second housing disposed on the cam ring, wherein the cam ring is placed in a position relative to the rotation shaft insertion hole of the first housing by using a jig, and the cam ring includes a clamped portion that is clamped by a cam ring holding device, while the first housing and the second housing are fixed to each other after placing the cam ring in the position relative to the rotation shaft insertion hole by using the jig. Alternatively, the oil pump including a fixing means for fixing the cam ring to the pump body instead of the clamped portion.
摘要翻译： 一种油泵，包括具有旋转轴插入孔的第一壳体，凸轮环，泵元件，可旋转地延伸穿过旋转轴插入孔的旋转轴，设置在凸轮环上的第二壳体，其中， 通过使用夹具相对于第一壳体的旋转轴插入孔的位置，并且凸轮环包括被凸轮环保持装置夹紧的夹持部，同时第一壳体和第二壳体彼此固定，之后，第一壳体和第二壳体彼此固定， 通过使用夹具将凸轮环相对于旋转轴插入孔放置在相对位置。 或者，油泵包括用于将凸轮环固定到泵体而不是夹紧部分的固定装置。
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公开(公告)号：US07665569B2
公开(公告)日：2010-02-23
申请号：US11430085
申请日：2006-05-09
IPC分类号： B62D5/06
摘要： A power steering system includes a hydraulic power cylinder having a first and a second hydraulic chambers, for assisting a steering force of a steering mechanism, a first and a second oil passages respectively connected to the first and second hydraulic chambers, a reversible pump discharging operating oil and providing oil pressure to the hydraulic power cylinder through the first and second oil passages, and a motor connected to the reversible pump and rotating the reversible pump in normal and reverse directions. A steering load detection unit detects a steering load of a steering wheel for steering of the steered road wheels, and a motor control unit outputs a control signal to the motor to bring an actual oil pressure generated by the reversible pump closer to a desired oil pressure determined based on the detected steering load. A discharge amount per rotation of the reversible pump is smaller than or equal to 5 cc.
摘要翻译： 动力转向系统包括具有第一和第二液压室的液压动力缸，用于辅助转向机构的转向力，分别连接到第一和第二液压室的第一和第二油路， 并通过第一和第二油路向液压动力缸提供油压，以及连接到可逆泵并且沿正向和反向旋转可逆泵的马达。 转向负载检测单元检测用于转向车轮的转向的方向盘的转向负载，电动机控制单元向电动机输出控制信号，以使由可逆泵产生的实际油压更接近期望的油压 基于检测到的转向负载确定。 可逆泵的每旋转的排出量小于或等于5cc。
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公开(公告)号：US20090125191A1
公开(公告)日：2009-05-14
申请号：US12269288
申请日：2008-11-12
申请人： Masakazu KURATA , Toshimitsu Sakaki , Mitsuo Sasaki , Tamotsu Yamaura , Mitsuaki Nakada , Kohei Ono , Eiji Kasai , Takatoshi Saito
发明人： Masakazu KURATA , Toshimitsu Sakaki , Mitsuo Sasaki , Tamotsu Yamaura , Mitsuaki Nakada , Kohei Ono , Eiji Kasai , Takatoshi Saito
摘要： A power steering apparatus includes a power cylinder; a reversible pump; first and second hydraulic passages; a reservoir tank; a first supply passage arranged to supply the hydraulic fluid through the reversible pump to the second hydraulic passage; a first one-way valve provided in the first supply passage; a second supply passage arranged to supply the hydraulic fluid through the reversible pump to the first hydraulic passage; and a second one-way valve provided in the second supply passage. A Reynolds number of a flow in the first one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the first one-way valve is maximum. A Reynolds number of a flow in the second one-way valve is equal to or smaller than 2300 when a flow rate per unit time of the flow in the second one-way valve is maximum.
摘要翻译： 动力转向装置包括动力缸; 可逆泵 第一和第二液压通道; 储水箱; 第一供应通道，布置成通过可逆泵将液压流体供应到第二液压通道; 设置在第一供应通道中的第一单向阀; 第二供应通道，其布置成通过可逆泵将液压流体供应到第一液压通道; 以及设置在第二供给通道中的第二单向阀。 当第一单向阀中的每单位时间流量的流量最大时，第一单向阀中的流量的雷诺数等于或小于2300。 当第二单向阀中的流量每单位时间的流量最大时，第二单向阀中的流量的雷诺数等于或小于2300。
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公开(公告)号：US20070074926A1
公开(公告)日：2007-04-05
申请号：US11487356
申请日：2006-07-17
申请人： Toru Takahashi , Toshimitsu Sakaki , Tadaharu Yokota , Kazuya Yamano , Kyoko Honbo , Masanori Sakai
发明人： Toru Takahashi , Toshimitsu Sakaki , Tadaharu Yokota , Kazuya Yamano , Kyoko Honbo , Masanori Sakai
IPC分类号： B62D5/06
CPC分类号： B62D5/064 , B62D5/065 , H01M10/125
摘要： A power assist mechanism is provided that assists operation of a steering mechanism when receiving a pressurized hydraulic fluid. A hydraulic pump feeds the power assist mechanism with the pressurized hydraulic fluid when driven. An electric motor drives the hydraulic pump. A battery unit is provided for energizing the electric motor. A control unit is provided for controlling the electric power from the battery unit to the electric motor. The battery unit comprises a plurality of lead-acid batteries that are connected in series. Each lead-acid battery comprises a spirally wound positive plate, a spirally wound negative plate, a spirally wound insulating plate that is spirally wound and sandwiched between the positive and negative plates, a battery case that puts therein the spirally wound positive, negative and insulating plates and an electrolyte that is provided in the battery case.
摘要翻译： 提供动力辅助机构，其在接收加压液压流体时辅助转向机构的操作。 驱动时，液压泵将动力辅助机构与加压液压流体一起供给。 电动机驱动液压泵。 提供电池单元以对电动机通电。 提供控制单元，用于控制从电池单元到电动机的电力。 电池单元包括串联连接的多个铅酸电池。 每个铅酸电池包括螺旋缠绕的正极板，螺旋卷绕的负极板，螺旋卷绕并夹在正极板和负极板之间的螺旋卷绕的绝缘板，放置螺旋卷绕的正极，负极和绝缘的电池壳体 板和设置在电池壳体中的电解质。
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公开(公告)号：US07648003B2
公开(公告)日：2010-01-19
申请号：US11654676
申请日：2007-01-18
申请人： Ayumu Miyajima , Isamu Tsubono , Takaomi Nishigaito , Toru Takahashi , Mitsuo Sasaki , Toshimitsu Sakaki , Tatsuo Matsumura
发明人： Ayumu Miyajima , Isamu Tsubono , Takaomi Nishigaito , Toru Takahashi , Mitsuo Sasaki , Toshimitsu Sakaki , Tatsuo Matsumura
IPC分类号： B62D5/06
CPC分类号： B62D5/065
摘要： In a power steering system comprising a power cylinder for assisting a steering power of a steering mechanism, a hydraulic pump for supplying a hydraulic pressure to the power cylinder, a first oil passage and a second oil passage connecting the power cylinder and the hydraulic pump respectively, a motor for driving the hydraulic pump, and power steering control means for calculating a command value to the motor based on the steering torque, a flow rate of the working oil supplied from a high-pressure side oil passage to a low-pressure side oil passage is restrained at the transition from the end of the steering state (lock end) of the steering mechanism to the returning. The flow-rate restraint increasingly corrects a driving current of the motor in the steering direction or limits the flow rate of the working oil.
摘要翻译： 在一种动力转向系统中，包括用于辅助转向机构的转向动力的动力缸，用于向动力缸提供液压的液压泵，分别连接动力缸和液压泵的第一油路和第二油路 用于驱动液压泵的电动机和用于根据转向转矩计算对电动机的指令值的动力转向控制装置，从高压侧油路供给到低压侧的工作油的流量 在从转向机构的转向状态（锁定结束）到返回的转变的过渡期间，油路被限制。 流量限制越来越多地纠正马达在转向方向上的驱动电流或限制工作油的流量。
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公开(公告)号：US07374411B2
公开(公告)日：2008-05-20
申请号：US11185812
申请日：2005-07-21
CPC分类号： F04C2/10 , F04C15/0023 , F05C2201/0439 , F05C2201/903 , F05C2251/046
摘要： An oil pump is provided which includes a cam ring made of a material having a first line expansion coefficient, a pump element rotatably disposed in the cam ring and smaller in an axial length than the cam ring, a first housing member disposed on one of axially opposite sides of the cam ring and made of a material having a second line expansion coefficient larger than the first line expansion coefficient, and a second housing member disposed on the other of the axially opposite sides of the cam ring and made of a material having a third line expansion coefficient than the first line expansion coefficient.
摘要翻译： 提供了一种油泵，其包括由具有第一线膨胀系数的材料制成的凸轮环，可旋转地设置在所述凸轮环中并且在轴向长度上小于所述凸轮环的泵元件;第一壳体构件，其设置在轴向 所述凸轮环的相对侧由具有大于所述第一线膨胀系数的第二线膨胀系数的材料制成，以及第二壳体构件，所述第二壳体构件设置在所述凸轮环的所述轴向相对侧中的另一个上，并且由具有 第三线膨胀系数比一线膨胀系数高。
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公开(公告)号：US07325645B2
公开(公告)日：2008-02-05
申请号：US11076099
申请日：2005-03-09
IPC分类号： B62D5/06
摘要： A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch system switches the role of the first and second outlet/inlet ports in accordance with a turning direction of a steering wheel. Flow control mechanisms are respectively incorporated with the first and second fluid passages, so that a controlled flow of hydraulic fluid from the hydraulic pump to the first or second work chamber and vice versa are appropriately carried out thereby providing the driver with a comfortable steering feeling. A bypass arrangement may be provided between the first and second fluid passages to deal with a residual pressure that would be remained in the first or second work chamber when the hydraulic pump is under inoperative condition.
摘要翻译： 第一流体通道从液压泵的第一出口/入口延伸到动力缸的第一工作室，并且第二流体通道从泵的第二出口/入口延伸到功率的第二工作室 圆筒。 开关系统根据方向盘的转向方向切换第一和第二出口/入口的作用。 流量控制机构分别与第一和第二流体通道结合，从而适当地执行从液压泵到第一或第二工作室以及反之亦然的液压流体的受控流动，从而为司机提供舒适的转向感。 可以在第一和第二流体通道之间设置旁路装置，以处理当液压泵处于不工作状态时将残留在第一或第二工作室中的残余压力。
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公开(公告)号：US06880668B2
公开(公告)日：2005-04-19
申请号：US10134489
申请日：2002-04-30
摘要： A first fluid passage extends from a first outlet/inlet port of a hydraulic pump to a first work chamber of a power cylinder, and a second fluid passage extends from a second outlet/inlet port of the pump to a second work chamber of the power cylinder. A switch system switches the role of the first and second outlet/inlet ports in accordance with a turning direction of a steering wheel. Flow control mechanisms are respectively incorporated with the first and second fluid passages, so that a controlled flow of hydraulic fluid from the hydraulic pump to the first or second work chamber and vice versa are appropriately carried out thereby providing the driver with a comfortable steering feeling. A bypass arrangement may be provided between the first and second fluid passages to deal with a residual pressure that would be remained in the first or second work chamber when the hydraulic pump is under inoperative condition.
摘要翻译： 第一流体通道从液压泵的第一出口/入口延伸到动力缸的第一工作室，并且第二流体通道从泵的第二出口/入口延伸到功率的第二工作室 圆筒。 开关系统根据方向盘的转向方向切换第一和第二出口/入口的作用。 流量控制机构分别与第一和第二流体通道结合，从而适当地执行从液压泵到第一或第二工作室以及反之亦然的液压流体的受控流动，从而为驾驶员提供舒适的转向感。 可以在第一和第二流体通道之间设置旁路装置，以处理当液压泵处于不工作状态时将残留在第一或第二工作室中的残余压力。
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10.发明申请公开(公告)号：US20080006469A1
公开(公告)日：2008-01-10
申请号：US10567829
申请日：2004-08-09
CPC分类号： B62D5/0481 , B62D5/065 , B62D5/30
摘要： A steering system includes a hydraulic power cylinder 5 that assists a steering force of a rack-and-pinion mechanism 4, and a first hydraulic pressure supply mechanism 8 having a first trochoid pump 23 selectively supplying hydraulic pressure to two hydraulic pressure chambers 15a and 15b of the hydraulic power cylinder via first and second fluid passages 6 and 7, and a first electric motor 24 for the first trochoid pump. When the first hydraulic pressure supply mechanism becomes failed, a second hydraulic pressure supply mechanism 11 is operated responsively to a command signal from a control unit 14 to selectively supply hydraulic pressure via third and fourth fluid passages to either one of the hydraulic pressure chambers.Thus, it is possible to positively apply a steering assist force by means of the second hydraulic pressure supply mechanism 11, thereby reducing a driver's operating force applied to a steering wheel.
摘要翻译： 转向系统包括：辅助齿条齿轮机构4的转向力的液压动力缸5和具有选择性地向两个液压室15a供给液压的第一副摆动泵23的第一液压供给机构8;以及 15b的第一和第二流体通道6和7的液压动力缸，以及用于第一次摆线泵的第一电动机24。 当第一液压供给机构发生故障时，响应于来自控制单元14的指令信号响应于第二液压供给机构11，通过第三和第四流体通路选择性地供给液压到任一个液压室。 因此，可以通过第二液压供给机构11积极地施加转向辅助力，从而降低驾驶员施加到方向盘的操作力。
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