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公开(公告)号：EP1800007B1
公开(公告)日：2013-12-25
申请号：EP05787801.9
申请日：2005-09-20
发明人： WILLIAMSON, Matthew
CPC分类号： F04B49/08 , F04C2/102 , F04C2/344 , F04C2/3442 , F04C14/22 , F04C14/223 , F04C14/26
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公开(公告)号：EP2342118B1
公开(公告)日：2013-11-20
申请号：EP09783945.0
申请日：2009-10-12
申请人： ZF-Lenksysteme GmbH
发明人： MERZ, Johann
CPC分类号： B62D5/062 , B62D5/063 , F04C2/344 , F04C14/26 , F04C15/064
摘要： The invention relates to a hydraulic power steering system (1) for a vehicle, comprising a pump (2) for conveying pressure medium from a pressure medium reservoir (3) to a load (4), wherein the pump (2) is driven by a vehicle engine according to the rotational speed, having a control device (5) for controlling a volumetric flow rate to the load (4), and having an orifice (6), which has an open cross-sectional area (7) that can be changed and which is arranged in the pressure medium flow from the pump (2) to the load (4), wherein the open cross-sectional area (7) increases when the pressure present at the orifice (6) rises. It is provided that the orifice (6) is made of a flexible and/or compressible material at least in a passage area that can affect the open cross-sectional area (7), wherein when the pressure at the orifice (6) rises, said material changes the shape thereof in such a way that the open cross-sectional area (7) changes.
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公开(公告)号：EP2412979A3
公开(公告)日：2013-05-29
申请号：EP11173969.4
申请日：2011-07-14
发明人： Friedrich, Kim Boris
CPC分类号： F04C14/185 , F04C2/18 , F04C14/26
摘要： Verdrängerpumpe, insbesondere Zahnradpumpe, umfassend eine Pumpenkammer 1 und eine Regelkammer 2, die voneinander über einen Kolben 3 getrennt sind, wobei die Pumpe eine Einrichtung 4, 5 aufweist, mit der aus der Pumpenkammer 1 in Richtung Regelkammer 2 fließendes Fluid abführbar ist.
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公开(公告)号：EP2582981A2
公开(公告)日：2013-04-24
申请号：EP11735549.5
申请日：2011-06-13
申请人： VHIT S.p.A.
CPC分类号： F04C2/102 , F04C11/001 , F04C14/265
摘要： An internal gear fluidic machine (1), in particular a pump for the lubrication circuit of a motor vehicle engine, comprises a member (13) for regulating the flow rate depending on the fluid pressure conditions in a fluidic circuit in which the machine (1) is connected. The regulating member (13) is axially slidable, without rotating, in a seat (12) formed in the body (10) of the machine (1) and has a first surface (18) for pressure application, which is permanently exposed to said pressure conditions and is arranged, when a threshold is exceeded, to cause a sliding of the regulating member (13) in order to create a fluid recirculation path through the machine (1). A method of regulating the flow rate of a fluidic machine and a combined pump (1, 100) for the automotive field, using the machine (1) as a pump for the lubrication circuit, are also provided.
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公开(公告)号：EP2546481A1
公开(公告)日：2013-01-16
申请号：EP12174693.7
申请日：2012-07-03
发明人： Akaishi, Nobuyuki , Ikawa, Masataka , Ueta, Yasuhiro , Ishioka, Takuji , Kamiyama, Hidehiko , Yamazaki, Takuya , Umezawa, Yoshiro , Inoue, Hirokazu , Kurokawa, Yoshitaka
CPC分类号： F01M1/16 , F04B49/08 , F04C2/10 , F04C14/26 , F04C2210/206 , Y10T137/7845 , Y10T137/7867 , Y10T137/7925 , Y10T137/7929
摘要： A relief device for an oil pump that can ensure an appropriate pressure of oil discharged from the oil pump in a high-revolution region of an engine, ensure satisfactory lubrication ability in a medium-revolution region, and improve the efficiency of the engine. The relief device includes a relief housing A constituted by a relief inflow portion 2, a valve passage portion 3, a recess 4, and an oil discharge portion 5 having a relief hole 51; a relief valve 6 having a small-diameter portion 63 between a first large-diameter portion 61 and a second large-diameter portion 62; and a spring 7 elastically biasing the relief valve 6 toward the relief inflow portion 2. The recess 4 is formed at a position that is closer to the relief inflow portion 2 side than to the oil discharge portion 5, the axial length of the recess 4 is larger than the axial length of the first large-diameter portion 61 of the relief valve 6, and the shortest axial distance between the recess and the relief hole is less than the axial length of the small-diameter portion 63.
摘要翻译： 一种能够确保在发动机的高转速区域从油泵排出的油的适当压力的油泵的释放装置，确保中等旋转区域的润滑能力良好，提高发动机的效率。 卸载装置包括由泄压流入部2，阀通道部3，凹部4和具有释放孔51的排油部5构成的释放壳体A; 在第一大直径部分61和第二大直径部分62之间具有小直径部分63的安全阀6; 弹簧7将安全阀6弹性地朝向凸起流入部分2施力。凹部4形成在比泄油部分2侧更靠近排油部5的位置，凹部4的轴向长度 大于安全阀6的第一大径部61的轴向长度，并且凹部与浮雕孔之间的最短轴向距离小于小直径部63的轴向长度。
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公开(公告)号：EP2458215A2
公开(公告)日：2012-05-30
申请号：EP11184802.4
申请日：2011-10-12
发明人： Tsuboi, Noboru
摘要： A screw compressor, in which a pair of intermeshing male and female screw rotors are housed in a rotor chamber formed in a casing, and a gas sucked from an intake channel is compressed by the screw rotors and discharged from a discharge channel, includes: a columnar space provided with a functional end face having an opening into an intermediate pressure section, which is an empty space in the rotor chamber and isolatable from both the intake channel and the discharge channel by the screw rotors, and also having an opening into a bypass channel which is communicated with the discharge channel; a piston fittingly inserted in the columnar space and brought into contact with the functional end face, to thereby separate the intermediate pressure section from the bypass channel when the piston is brought into contact with the functional end face; and a pressure detection channel for allowing an area located on an opposite side of the functional end face in the columnar space to communicate with the discharge channel.
摘要翻译： 一种螺旋式压缩机，其中一对相互啮合的阳螺纹转子和阴螺旋转子容纳在形成在壳体中的转子室中，并且从进气通道吸入的气体被螺杆转子压缩并从排出通道排出，包括： 柱状空间设置有具有到中间压力部分的开口的功能端面，中间压力部分是转子室中的空白空间，并且可通过螺杆转子与进气通道和排出通道两者分离，并且还具有通向旁路的开口 与排放通道连通的通道; 活塞，其被配合地插入所述柱状空间并与所述功能端面接触，从而当所述活塞与所述功能端面接触时将所述中间压部与所述旁通通路分离; 以及压力检测通道，用于允许位于柱状空间中的功能端面的相反侧的区域与排出通道连通。
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公开(公告)号：EP1921317B1
公开(公告)日：2011-05-04
申请号：EP07020711.3
申请日：2007-10-23
发明人： Ono, Hisashi , Nunami, Koji
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公开(公告)号：EP2275682A1
公开(公告)日：2011-01-19
申请号：EP10181269.1
申请日：2007-10-23
发明人： Ono, Hisashi , Nunami, Koji
摘要： An oil supplying apparatus (X) includes a first oil path (61) supplying working oil from an outlet port (31) to a portion (7) to be supplied with the working oil, a second oil path (62) supplying the working oil to an oil pressure control valve (4), a relief oil path (66), and a valve body oil path (44). Depending on first, second, third, and fourth ranges of the oil pressure of the working oil in the first oil path (61), the working oil is supplied to the first oil path (61), is supplied to the first oil path (61) and to the relief oil path (66) via the valve body oil path (44), is directly supplied to the first oil path (61) and is supplied to merge into the first oil path (61) via the oil pressure control valve (4), and is supplied to the first oil path (61) and to the relief oil path (66) via the oil pressure control valve (4) respectively.
摘要翻译： 供油装置（X）包括从出口（31）向供给工作油的部分（7）供给工作油的第一油路（61），供给工作油的第二油路（62） 到油压控制阀（4），减压油路（66）和阀体油路（44）。 根据第一油路（61）中的工作油的油压的第一，第二，第三和第四范围，将工作油供给到第一油路（61），供给到第一油路（ 61）和通过阀体油路（44）与卸载油路（66）直接供给到第一油路（61），并通过油压控制供给合流到第一油路61 阀（4），分别经由油压控制阀（4）供给到第一油路（61）和卸载油路（66）。
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公开(公告)号：EP2022985A2
公开(公告)日：2009-02-11
申请号：EP08014138.5
申请日：2008-08-07
发明人： Yokoi, Hironao , Suzuki, Shigeru , Yamashita, Katsumi , Fujii, Toshiro , Ota, Masaki , Murakami, Kazuo
CPC分类号： F04C11/001 , F04C2/086 , F04C2/18 , F04C14/065 , F04C14/26 , F04C2240/30
摘要： A variable displacement type gear pump has gear chambers, one of which is a specific gear chamber. A suction passage (35,36,37) is formed in the housing so as to communicate with suction-side spaces (31,33). An outlet passage (41) communicates with discharge-side spaces (32,34). A return passage (50) returns the fluid discharged to the discharge-side space of the specific gear chamber to the suction passage. The return passage communicates with the suction passage at a confluence portion located upstream side of the suction-side space. An opening and closing valve (51) opens the return passage in a small displacement operational state. A check valve (45) is located between the discharge-side space of the specific gear chamber and the outlet passage for preventing the fluid discharged from the gear chamber other than the specific gear chamber from flowing into the discharge-side space of the specific gear chamber in the small displacement operational state.
摘要翻译： 可变排量式齿轮泵具有齿轮室，其中之一是特定齿轮室。 吸入通道（35,36,37）形成在壳体中，以与吸入侧空间（31,33）连通。 出口通道（41）与排出侧空间（32,34）连通。 返回通道（50）将排出到特定齿轮室的排出侧空间的流体返回到吸入通道。 返回通道在位于吸入侧空间上游侧的汇合部分处与吸入通道连通。 打开和关闭阀（51）在小排量操作状态下打开返回通道。 止回阀（45）位于特定齿轮室的排出侧空间和出口通道之间，用于防止从特定齿轮室以外的齿轮室排出的流体流入特定齿轮的排出侧空间 室位于小排量运行状态。
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公开(公告)号：EP1328729A4
公开(公告)日：2005-01-12
申请号：EP01973587
申请日：2001-09-27
申请人： RPM IND INC
CPC分类号： F04C14/24 , F01M2005/026 , F04C2/18 , F04C14/26
摘要： An engine pre-lubrication pump includes a pump housing (13) with a pump cavity (14) in which a first gear (18) and a second gear (19) are positioned for pumping fluid. The first gear (18) is operably and sealably connected to a motor shaft (16) for rotation and the second gear (19) is rotatably mounted to a second shaft (17) for geared rotation with the first gear (18). Fluid inlet port (21) and outlet port (22) are located in communication with the pump cavity (14) and adapted respectively for connection with a source of fluid and a discharge means and an internal vent 50 is positioned in between the armature shaft (16) or bore and the pump housing (13) along the inlet port (21). Alternatively, a valve means (30) is positioned between the inlet (21) and outlet (22) ports to selectively permit fluid pumped between the inlet (21) and outlet (22) ports to pass through it when the outlet port (22) is flow restricted.
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