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    • 2. 发明申请
    • PIEZOELECTRIC ACTUATOR
    • 压电作动器
    • WO2007141137A3
    • 2008-03-20
    • PCT/EP2007054949
    • 2007-05-22
    • BOSCH GMBH ROBERTBOECKING FRIEDRICH
    • BOECKING FRIEDRICH
    • H01L41/047F02M51/06H01L41/083
    • H01L41/0472F02M51/005F02M51/0603F02M61/08F02M63/0026
    • A piezoelectric actuator (2) for a fuel injection valve (1) has an actuator body (24) with a multiplicity of ceramic layers (26A - 26D) and a multiplicity of electrode layers (27A - 27C) which are arranged between the ceramic layers (26A - 26D). In this case, an external electrode (30) is provided which is connected to some of the electrode layers (27A, 27C). The external electrode (30) has a plurality of longitudinal wires (39A - 39C), which run in the longitudinal direction (38) of the actuator body (24), and a plurality of weft wires (37A - 37E), wherein a weft wire (37A - 37E) is passed through the longitudinal wires (39A - 39C) in such a way that some of the longitudinal wires (39A - 39C) run above the weft wire (37A - 37E) and other longitudinal wires (39A - 39C) run beneath the weft wire (37A - 37E).
    • 用于燃料喷射阀(1)一种压电致动器(2)包括致动器主体(24),其具有多个陶瓷层(26A - 26D)和(26A - 26D)在陶瓷层之间设置的多个电极层(27A - 27C)上 , 在这种情况下,提供了一个外部电极(30),其连接到所述电极层(27A,27C)的至少一部分。 外部电极(30)具有多个在延伸的纵线的致动器主体(24)的纵向方向(38)(图39A - 39C)和多个纬线(37A - 37E),其中,纬纱丝(37A - 37E),以便(通过纵向线材39A - 39C 纬丝(37A下方39C) - )被执行,使得所述纵向导线(39A的一部分 - 39C)之上和纵向导线的另一部分(39A - 37E中运行)。
    • 3. 发明申请
    • FUEL INJECTOR WITH A SWITCHABLE CONTROL CHAMBER FEED
    • 喷油嘴与切换控制房间供应量
    • WO03004860A3
    • 2003-04-17
    • PCT/DE0202292
    • 2002-06-21
    • BOSCH GMBH ROBERTBOECKING FRIEDRICH
    • BOECKING FRIEDRICH
    • F02M47/02F02M59/46F02M63/00
    • F02M47/027F02M63/004F02M63/0045F02M63/0068F02M2200/21F02M2200/28
    • The invention relates to a fuel injector for direct injection internal combustion engines. The fuel injector comprises an injector body (1) containing a control chamber (2).A nozzle needle/ tappet arrangement (6) in the injector body can be actuated by impinging/reducing pressure in the control chamber (2). The pressure in the control chamber (2) can be reduced via a flow channel (10), using a throttle element (13), said control chamber (2) being connected to a high pressure source by means of a permanently active pressure-side feed (28) and a second throttle element (26). A switch valve (16) is accommodated in the body (1) of the fuel injector, said valve being to connected to the control chamber (2) via the flow channel (10). In order to build up pressure in the control chamber (2), said switch valve (16) is used for parallel connection of another high-pressure side feed (29) to a third throttle element (27) in the permanently active feed (28) to the control chamber (2).
    • 本发明涉及一种燃料喷射器用于直接喷射的内燃机。 该燃料喷射器包括喷射器主体(1),其包含一控制腔室(2)。 所述控制腔室(2)的加压/减压是在(1)操作的喷射器的喷嘴针/活塞装置(6)。 经由流道(10)释放压力,并经由高压侧连接,永久地作用入口(28)的第一节气门元件(13)与具有高压力源的第二节气门元件(26)的控制腔室(2)。 在燃料喷射器的喷射器主体(1)被接收,其经由Strömungskana1(10)与所述控制腔室(2)连接的切换阀(16)。 对于通过切换阀(16),进一步的高压侧入口(29)与第三节流元件(27)的装置建立压力控制腔(2)永久地作用入口(28)并联连接的控制腔室(2)。
    • 6. 发明申请
    • INJECTION DEVICE AND METHOD FOR INJECTION OF FLUIDS
    • 注射装置和方法将流体
    • WO0153695A3
    • 2001-12-20
    • PCT/DE0100123
    • 2001-01-13
    • BOSCH GMBH ROBERTBOECKING FRIEDRICH
    • BOECKING FRIEDRICH
    • F02M51/00F02M47/00F02M47/02F02M51/06F02M59/46F02M61/04F02M61/16F02M61/20F02M63/00
    • F02M63/0061F02M47/027F02M63/0007F02M63/0026F02M2200/701F02M2200/703
    • The invention relates to an injection device, with an injection nozzle, a control valve (26), for opening or closing the injection nozzle, by means of a control chamber (32) and an actuator (14), for operating the control valve (26), where at least one further first valve (22) and a further second valve (24) are provided. A primary pressure may be introduced into a pressure chamber (34), for the injection nozzle, by means of the further first valve (22). The pressure chamber (34), for the injection nozzle and the control chamber (32) may be connected to an overflow system (36), by means of the further second valve. The control valve (26), the further first valve (22) and the further second valve (24) are all operable by means of the same actuator. The invention further relates to a method for the injection of fluid, in which the above device finds application.
    • 所述Erfingung涉及一种具有喷射喷嘴,控制阀(26),用于打开和经由控制空间(32)和用于致动所述控制阀(26)的致动元件(14)封闭所述喷嘴的喷射装置,所述至少一个附加的第一阀(22) 和设置在另外的第一阀(22),主压入喷射器和所述控制腔(32)的压力室(34)的另一第二阀(24)可被引入(通过压力室的另外的第二阀(24) 可以连接在喷射器和所述控制腔(32)的泄漏的系统(36)和所述控制阀(26),所述另外的第一阀(22)和由相同的致动元件(14另外的第二阀(24))可被致动的34)。 本发明还涉及一种用于将流体注入,在其中使用根据本发明的喷射器的方法。
    • 8. 发明申请
    • PREVENTING CAVITATION ON THE PUMP CYLINDER OF A HIGH-PRESSURE PUMP
    • 高压泵泵缸的空气流动防止
    • WO2011072913A3
    • 2011-09-01
    • PCT/EP2010065776
    • 2010-10-20
    • BOSCH GMBH ROBERTKRISTEN MARCUSBOECKING FRIEDRICHDUTT ANDREAS
    • KRISTEN MARCUSBOECKING FRIEDRICHDUTT ANDREAS
    • F04B1/04F02M59/06F02M59/10F02M63/02F04B1/053
    • F04B1/0408F02M59/06F02M59/102F04B1/0421F04B1/0439F04B1/053
    • The invention relates to a high-pressure pump for the fuel injection system of an internal combustion engine, comprising a pump housing (1) in which at least one tappet (5), which can be moved axially in a pump cylinder (4), can be moved between a bottom dead centre position (BDC position) and a top dead centre position (TDC position). According to the invention, a high-pressure pump is provided for the fuel injection system of an internal combustion engine, in which cavitation erosion in the region of a pump cylinder (4) is prevented. This is achieved in that a fluid film is built up between the tappet (5) and the pump cylinder (4), the tappet (5) assumes at least one position performing a tilting movement between the bottom dead centre position and the top dead centre position, and the squeeze gap (10) caused by the tilting movement is connected to a pressure dissipation gap (11). According to one variant, the play between the tappet (5) and the pump cylinder (4) is limited to a value of 2/1000 x D (D = diameter of the pump cylinder). Said limitation of the play minimises the tilting movement to such an extent that virtually no vapour bubble can form.
    • 本发明涉及一种高压泵的用于内燃发动机的燃料喷射系统,具有一个泵壳(1),在其中至少一个在泵缸(4)轴向移动的柱塞(5)的下止点(BDC)位置和上死点之间(TDC 位置)是可移动的。 根据本发明,提供了一种用于内燃机的燃料喷射系统的高压泵,其中避免了在泵缸(4)的区域中的气蚀。 这是这样实现的流体膜在柱塞之间建立(5)和所述泵缸(4),即所述柱塞(5)占据至少一个BDC位置和TDC位置之间以及通过倾斜运动出口位置 连接了与Druckabführspalt(11)一起引起的Quetschspalt(10)的倾斜运动。 一种变型规定柱塞(5)和泵缸(4)之间的间隙达到2/1000×D(D =泵缸直径)的值是有限的。 通过这种游戏限制,倾斜运动到目前为止已经最小化,几乎不会产生蒸汽泡。
    • 9. 发明申请
    • FUEL INJECTOR
    • 喷油嘴
    • WO2007110267A3
    • 2008-04-10
    • PCT/EP2007051320
    • 2007-02-12
    • BOSCH GMBH ROBERTPAUER THOMASBOECKING FRIEDRICH
    • PAUER THOMASBOECKING FRIEDRICH
    • F02M51/06F02M63/00
    • F02M51/0603F02M61/167F02M2200/703
    • The invention relates to a fuel injector comprising an injector housing (1) with a high-pressure fuel feed (26) which communicates with a central high-pressure fuel source outside the injector housing (1) and with a pressure compartment (17) inside the injector housing (1). Fuel that is at a working pressure is injected from said pressure compartment into the combustion chamber of an internal combustion engine when an injector needle (8) opens that is coupled to an actuator (30) via a hydraulic coupler. The aim of the invention is to improve the injection behavior of such a fuel injector. For this purpose, the actuator (30) is prestressed by a defined prestress which acts in the same direction as and is higher than the compressive force with which the hydraulic coupler acts upon the actuator (30) at a relatively low working pressure.
    • 本发明涉及与具有燃料高压入口(26)与所述喷射器壳体外侧的中央的高压燃料源连通的喷射器壳体(1)的燃料喷射器(1)中,用在连接一个压力室(17)的喷射器壳体(1)的内部从该 被注射操作加压燃料到内燃机的燃烧室中时,喷嘴针(8)打开时,其通过一个液力耦合器的致动器(30)耦合。 为了提高燃料喷射器的喷射性能,致动器(30)是通过在相同的方向和大于在在致动器的液压耦合器的相对低的操作压力的按压力作用的定义预紧力偏置(30) 行为。
    • 10. 发明申请
    • INJECTION DEVICE AND METHOD FOR INJECTING FLUID
    • 注射装置和方法将流体
    • WO0161180A3
    • 2002-02-14
    • PCT/DE0100585
    • 2001-02-16
    • BOSCH GMBH ROBERTBOECKING FRIEDRICH
    • BOECKING FRIEDRICH
    • F02M45/08F02M47/00F02M47/02F02M51/06F02M63/00
    • F02M63/0026F02M45/08F02M47/02F02M47/027
    • The invention relates to an injection device comprising a control valve (2), an actuating element which actuates the control valve (2), an injection nozzle which can be controlled by the control valve (2) by building up or decreasing pressure in a control chamber (8). The control valve (2) has at least two switching states. A first pressure is regulated in the control chamber (8) in the first switching state of the control valve (2), wherein the injection nozzle is closed. A second pressure is regulated in the control chamber in the second switching state of the control valve (2), wherein the injection device is open. The control valve (2) has at least a third switching state wherein a third pressure is regulated in the control chamber, said third pressure lying between the first and second pressure and wherein the injection nozzle is opened. The invention also relates to a method for injecting fluid using the inventive injection device.
    • 本发明涉及一种注射装置,具有控制阀(2),用于致动所述控制阀(2),一个注射喷嘴,其经由在所述控制阀(2)的控制空间(8)的压力建立或压力减小控制,其中所述控制阀的致动元件( 2)具有至少两个开关状态和(在调整在控制空间(8),其中,所述喷射喷嘴是封闭的,和(在控制阀2的第二开关状态的第一压力控制阀2)的第一切换状态),在第二压力 调整控制空间(8),其中,所述喷射喷嘴是打开的,其中,所述控制阀(2)具有的第三开关状态至少,其中,在(8)建立的控制空间内的第三压力,其位于所述第一压力和第二压力之间 且其中所述喷射喷嘴是开放的。 本发明还涉及一种用于将流体注入,在其中使用根据本发明的喷射器的方法。