公开(公告)号：EP1255930A1

公开(公告)日：2002-11-13

申请号：EP01909759.1

申请日：2001-02-15

Applicant: Mannesmann Rexroth AG

Inventor： SHRIVE, Chris

IPC: F03C1/04

CPC classification number: F03C1/045

Abstract: The invention relates to a hydraulic control circuit for a radial piston engine with two speeds. The changeover between the speeds takes place through the alteration of the absorption volume, the delivery side (22, 122, 222) being connected to the discharge side (24, 124, 224, 324) with a bypass connection by means of a valve arrangement 830, 130, 230, 330, 430) for a selected number of engine pistons. The aim of the invention is to provide a particularly space-saving means of ensuring that the changeover between speeds occurs smoothly and in such a manner as to preserve the individual components as far as possible. To this end, at least one intermediate switching position (230-Z; 330-Z2; 330-Z3), in which the delivery side (22, 122, 222) is throttled to the discharge side (24, 124, 224, 324), i.e. connected via a diaphragm-type arrangement (231; A1; A2; 282; 284-A; 284-B; 286-B; 382-2; 384-2), is provided in front of valve arrangement (30, 130, 230, 330, 430) between the two end switching positions. The valve arrangement (30, 130, 230, 330, 430) is preferably driven in such a way that a valve body (270, 370, 470) can be moved through the intermediate switching position at a controlled speed.

公开(公告)号：EP1212231A1

公开(公告)日：2002-06-12

申请号：EP00969222.9

申请日：2000-09-02

Applicant: Mannesmann Rexroth AG

Inventor： VOSS, Gerhard ,  BERGMANN, Erhard ,  VOSSBERG, Hartmut

IPC: B62D5/097 ,  B62D5/32

CPC classification number: B62D5/097 ,  B62D5/32

Abstract: The invention relates to a steering device that is provided with one or more dosage pumps (7, 7') and with a switch element (17) interposed between two adjacent dosage pumps (7, 7'). The switching element switches between the power-assisted steering mode, in which the feed volumes of the pumps add up, and the emergency steering mode, in which only the first dosing pump (8) feeds the hydraulic fluid.

公开(公告)号：EP0964806B1

公开(公告)日：2002-06-12

申请号：EP98913611.4

申请日：1998-02-28

Applicant: Mannesmann Rexroth AG

Inventor： MIES, Hubertus

IPC: B60T13/66 ,  B60T7/04

CPC classification number: B60T8/321 ,  B60T7/042 ,  B60T8/326 ,  B60T13/686

Abstract: The invention relates to an electrically controlled braking system which is used for a wheeled vehicle. The invention also relates to input means (33) which can be actuated by the driver of the vehicle according to the desired braking effect, two electronic control units (25, 26) operating independently from each other and each of which being supplied with an electronic signal corresponding to the degree of actuation of the input means detected by a sensor (35, 36), a brake cylinder (12) assigned to a wheel and a braking pressure modulator valve (13) which is fluid connected to a brake cylinder (12) with a first electrical actuating element (18, 19) which can be controlled by one of the two control units (25, 26). In order to make the braking system very secure, the braking system modulator valve (13) has a second electric actuating element (18, 19) which works in the same direction (18, 19), when controlled, as the first actuating element (18, 19). Said element (18, 19) can be controlled by the second electronic control unit (25, 26) at the same time as the first electrical actuating element (18, 19) is controlled by the first electronic control unit (25, 26).

公开(公告)号：EP1025360B1

公开(公告)日：2001-11-28

申请号：EP98952712.2

申请日：1998-10-17

Applicant: Mannesmann Rexroth AG

Inventor： PIPPES, Reinhard

IPC: F04C2/10

CPC classification number: F04C2/101

Abstract: The invention relates to an internal gear machine (pump or motor) comprising an external toothed pinion and an inner toothed gear. A half-sickle shaped filler element (8) is arranged in the clearance between the external toothed pinion and the inner toothed gear. Said filler element is comprised of a support segment (9) and a sealing segment (10). A gap (13) is located between the support segment and the sealing segment. Said gap is sealed by two cylindrical sealing elements (14, 15) in the form of sealing rollers with circular cross-sectional areas extending over the width of the filler element. The sealing elements are pressed against the support segment and the sealing segment by each leaf spring (16, 17) and by the operating pressure of the internal gear machine. The sealing element is constructed as a sealing strip in order to increase the maximum permissible operation pressure. The cross-sectional area of said sealing strip is formed as a closed polygon like a triangle. The invention is utilized in internal gear machines (pump or motor) having pressure means.

公开(公告)号：EP1153235A1

公开(公告)日：2001-11-14

申请号：EP00907523.5

申请日：2000-02-09

Applicant: Mannesmann Rexroth AG

Inventor： WÖLFGES, Hans

IPC: F16K31/06 ,  B60T8/36 ,  F16K47/02

CPC classification number: F16K31/0655 ,  F16K31/0651

Abstract: The invention relates to a proportional actuating magnet (1) for a hydraulic solenoid valve, comprising a pole (3) with a location bore (17) for receiving a valve cone (20), in addition to a pole tube (15) for receiving an armature (30). An armature plunger (33) extends between the armature (30) and valve cone (20). A retention area (35) with an opening (36) for the penetration of the plunger is provided in the area around the armature plunger, between the location bore (17) for receiving the valve cone and the pole tube (15). An annular gap of predetermined width is configured between the interior of the opening (36) for the penetration of the plunger and the exterior of the armature plunger (33) that runs through the opening (36) for the penetration of said plunger.

Abstract translation: 本发明涉及一种用于液压电磁阀的比例致动磁体（1），该电磁阀包括具有用于接收阀锥（20）的定位孔（17）的杆（3），除了用于接收 一个电枢（30）。 电枢柱塞（33）在电枢（30）和阀锥体（20）之间延伸。 在用于接收阀锥的定位孔（17）和极管（15）之间的衔铁柱塞周围的区域中设置有用于插入柱塞的具有开口（36）的保持区域（35）。 在用于插入柱塞的开口（36）的内部与穿过用于插入所述柱塞的开口（36）的衔铁柱塞（33）的外部之间构造有预定宽度的环形间隙。

公开(公告)号：EP1069317A2

公开(公告)日：2001-01-17

申请号：EP00112754.7

申请日：2000-06-16

Applicant: Mannesmann Rexroth AG

Inventor： Büttner, Peter ,  Maxeiner, Thassilo

IPC: F15B13/04 ,  F15B20/00

CPC classification number: E02F9/2267 ,  E02F9/2203 ,  E02F9/226 ,  E02F9/2271 ,  E02F9/2296 ,  F15B13/0402 ,  F15B13/0416 ,  F15B2013/006

Abstract: Die Erfindung betrifft eine Wegeventilscheibe (20) für ein mobiles Arbeitsgrät, die eine Not-Aus-Funktion und/oder eine Auswahlfunktion für die Betätigung unterschiedlicher hydraulischer Verbraucher haben soll. Ziel ist es, diese Wegeventilscheibe (20) mit einem geringen Aufwand herzustellen.
Erreicht wird dieses Ziel dadurch, daß für die Wegeventilscheibe (20) ein in großen Stückzahlen gegossenes Ventilgehäuse (40) verwendet und modifiziert wird. Die Ventilgehäuse (40) sind mit einem solchen Kern gegossen, daß sie für sogenannte Load-Sensing-Wegeventilscheiben verwendet werden können. Dabei wird in die zweite Ventilbohrung (82) ein Regelkolben einer Druckwaage eingesetzt. Gemäß der Erfindung ist nun in die zweite Ventilbohrung ein Trennkolben (90) eingesetzt, der eine feste Lage einnimmt und zwei Ringkammern (86,87) der zweiten Ventilbohrung (82) voneinander trennt. Über eine zusätzlich eingebrachte Bohrung (98) ist die Zulaufkammer (48) der ersten Ventilbohrung (41) mit der Pumpe (10) verbindbar. Die bisher schon vorhandene und eine zweite Ringkammer der zweiten Ventilbohrung anschneidende Bohrung kann über einen zusätzlichen Kanal zwischen den zwei Ventilbohrungen mit der Zulaufkammer der ersten Ventilbohrung verbunden werden. Über letztere Bohrung fließt Druckmittel den angebauten LS-Wegeventilscheiben (21) zu.

Abstract translation: 路径阀盘具有铸造壳体，其设计可容纳盘本身，其也是大量生产的铸造件。 阀壳容纳根据负载感测原理工作的阀盘。 该设计有一个新的砂芯，用于铸造过程中以容纳阀盘。 在调节活塞的第二阀孔中并入压力秤。

公开(公告)号：EP0894299B1

公开(公告)日：2000-08-30

申请号：EP97908262.5

申请日：1997-03-19

Applicant: Mannesmann Rexroth AG

Inventor： MACHAT, Götz-Dieter ,  MEYER, Karl-Josef ,  STROKA, Wilfried ,  ZÜGNER, Jürgen

IPC: G05D16/20 ,  G05D16/16 ,  F15B13/042

CPC classification number: G05D16/10 ,  F15B13/0402 ,  F15B13/0407 ,  Y10T137/2607 ,  Y10T137/2635

Abstract: The invention pertains to a precontrolled 3-way pressure control valve with a direct-control pressure valve (45) as pilot valve (45) and with a main valve (9). In a valve housing (10) of the main valve (9) there is a valve bore (11) in which a control piston (12) is moved axially. Said control piston (12) is acted upon in opposite directions by pressures derived from the pressure in the control connection (A) and the pressure setting of the pilot valve (45) such that it experiences an imbalance of forces when the pressure at the control connection (A) deviates from the control pressure predetermined by the pressure setting of the pilot valve (45). To create a pressure control valve with a stable action, the control piston (12) is designed as a hollow piston with a hollow chamber (30), the wall of which has a number of oblong, axially running through-holes (32) distributed over the circumference of the control piston (12), enabling the individual connections (A, P, T) of the main valve to be combined. Furthermore, the valve is subject to low-pressure control, wherein control oil is removed at an axial end of the hollow chamber (30) in the control piston (12) and flows through a control nozzle (41) into a pressure chamber (42) in front of one end face of the control piston (12), connecting to the pilot valve (45) in the form of a pressure limiting valve (45). Pressure in the control connection (A) is applied to the control piston (12) against the pressure in this first pressure chamber (42) and the force of a spring (31) acting in the same direction.

公开(公告)号：EP0821765B1

公开(公告)日：2000-07-05

申请号：EP96908107.4

申请日：1996-03-21

Applicant: Mannesmann Rexroth AG

Inventor： MIES, Hubertus

IPC: F15B1/027

CPC classification number: F15B1/027

Abstract: The proposal is for a charging valve arrangement with a pilot valve which can be connected to a pump and a store and in a first position connected the pump to the store and in a second separates the pump from the store. The separation of the pump and the store takes place at a given storage pressure limit and a user connected to the system is cut off in such a way that the user's load pressure does not act on the store. The pressure from the pump and/or the store is applied to a control valve to regulate the pump.

公开(公告)号：EP1002961A2

公开(公告)日：2000-05-24

申请号：EP99122530.1

申请日：1999-11-12

Applicant: Mannesmann Rexroth AG

Inventor： Keller, Dieter ,  Stitz, Matthias

IPC: F15B13/00 ,  F15B21/08 ,  G11C7/10

CPC classification number: F15B13/0857 ,  F15B13/0867 ,  F15B21/085 ,  H04B10/801

Abstract: Bei der Ansteuerung von elektrisch betätigten Schaltventilen über ein digitales Bussystem, bei dem die Schaltbefehle in aufeinander folgenden Datentelegrammen an eine Reihe von Teilnehmern übertragen werden, werden in vielen Fällen nicht alle Nutzdatenbits eines Datentelegramms benötigt, d. h. die volle Informationsbreite des Bussystems wird nicht ausgenutzt. Dies ist insbesondere dann der Fall, wenn die Schnittstelle räumlich in das Schaltventil integriert ist. In diesem Fall werden mehr Nutzdatenbits übertragen, als für den Schaltvorgang des Schaltventils als solchen erforderlich sind. Um die Funktionalität zu erhöhen, werden über Nutzdatenbits, die für den Schaltvorgang des Schaltventils als solchen nicht benötigt werden, zusätzliche Schaltbefehle übertragen und durch diese Schaltbefehle weitere Funktionen des Schaltventils gesteuert. Dieses Verfahren ist allgemein für Schaltventile geeignet, die über ein Bussystem angesteuert werden, insbesondere für Schaltventile, bei denen die Schnittstelle zwischen dem Datenbus und dem Schaltventil nicht außerhalb des Schaltventils angeordnet ist, sondern räumlich in das Schaltventil integriert ist. Das Verfahren ist besonders vorteilhaft für die Ansteuerung von elektromagnetisch betätigten hydraulischen oder pneumatischen Schaltventilen.

Abstract translation: 该方法包括通过数字总线系统（7）驱动切换阀（1），从而在切换过程所需的数据消息中传送更有用的数据位。 传送额外的切换命令以控制附加的切换功能，例如， 用于将通过电磁致动切换阀的电磁线圈流动的电流切换到两个值之间。

公开(公告)号：EP0995041A1

公开(公告)日：2000-04-26

申请号：EP98940167.4

申请日：1998-07-07

Applicant: Mannesmann Rexroth AG

Inventor： CORNEA, Marius ,  LIPPERT, Lorenz

IPC: F15B13/044 ,  F16K27/04

CPC classification number: F15B13/0821 ,  F15B13/044 ,  F15B13/0835 ,  F15B13/0857 ,  F15B2013/004 ,  F16K27/041 ,  F16K27/048

Abstract: The invention relates to a built-in hydraulic valve, which is specially used for hydraulic camshaft displacement in a motor vehicle engine, comprising a built-in cartridge (10), an actuation device forming a unit with said cartridge (10), specially an electromagnet (13), and a securing eye (27) for fixing the valve to a main housing (9) by means of a screw (29). A valve element (15) can be moved axially in an axial bore hole (14) of the built-in cartridge (13) in order to regulate the hydraulic fluid passage between different external connections of the built-in valve. At least one of said external connections is formed by the radial bore hole (22) in the built-in cartridge (10), which starts at the outer periphery of the built-in cartridge (10) and must be inserted in such a way that it covers a duct of said main housing (9) when the built-in valve is assembled inside the main housing. This is done in a simple manner when the securing eye (27) and the radial bore hole (22) are aligned with each other in such a way that the radial bore hole (22) also covers the duct automatically when the securing eye (27) is positioned in the right place. According to the invention, the angular alignment between the securing eye (27) and the built-in cartridge can only be modified destructively to prevent said alignment from being accidentally changed.