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    • 1. 发明公开
    • EINSPRITZDÜSE
    • 喷油器
    • EP1853813A1
    • 2007-11-14
    • EP05825330.3
    • 2005-12-21
    • ROBERT BOSCH GMBH
    • STOECKLEIN, WolfgangRAU, AndreasBAUER, MichaelGRUENBERGER, Andreas
    • F02M47/02F02M51/06
    • F02M47/027F02M47/02F02M51/0603
    • The invention relates to an injection nozzle (1) for an internal combustion engine, especially for use in a motor vehicle. Said injection nozzle comprises a nozzle body (2) having at least one orifice (3), an injector needle (5) received in the nozzle body (2) so as to be stroke-adjusted and controlling injection of fuel through the at least one orifice (3), and a booster piston (12) that is drivingly coupled to an actuator (3) and has a booster surface (21). The injector needle (5) or a needle unit (6) comprising the injector needle (5) is/are provided with a control surface (17) that is hydraulically coupled to the booster surface (21). The aim of the invention is to provide a system that allows for the exact control of small and large injection quantities. For this purpose, a compensation piston (25) is received in the booster piston (12) so as to be stroke-adjusted. Said compensation piston (25) has a compensation surface (26) that is hydraulically coupled to the booster surface (21). The compensation piston (25), in an initial position in which the injector needle (5) blocks the at least one orifice (3), rests against a stop (32) that is stationary with respect to the nozzle body (2). The compensation piston (25) has a storage surface (27) that delimits a storage compartment (28) configured in the booster piston (12).
    • 5. 发明公开
    • KRAFTSTOFF-EINSPRITZVORRICHTUNG FÜR EINE BRENNKRAFTMASCHINE
    • KRAFTSTOFF-EINSPRITZVORRICHTUNGFÜREINE BRENNKRAFTMASCHINE
    • EP1654456A1
    • 2006-05-10
    • EP04738653.7
    • 2004-06-09
    • ROBERT BOSCH GMBH
    • BOEHLAND, PeterMAGEL, Hans-ChristophKANNE, SebastianNENTWIG, GodehardBAUER, Michael
    • F02M59/46F02M47/02F02M45/08F02M45/10
    • F02M47/027F02M45/086F02M63/0026F02M63/0045F02M63/0061F02M2200/46
    • The invention relates to a fuel injection device (10) for an internal combustion engine, comprising two valve elements (16, 18), each of which is provided with a hydraulic control surface (32, 34) that is effective in the closing direction. A hydraulic control chamber (38) is assigned thereto. Additionally, a control valve (72) is provided that influences the pressure in the control chamber (38) while impingement units (20, 22) are provided which can act in the opening direction of the valve elements (16, 18). The hydraulic opening pressures of the valve elements (16, 18), which occur in the control chamber (38), are different. According to the invention, at least three different pressure levels can be adjusted in the control chamber (38) by means of the control valve (72), all valve elements (16, 18) being closed at a relatively high pressure level, one valve element (18) being open at an intermediate pressure level, and all valve elements (16, 18) being open at a relatively low pressure level.
    • 用于内燃机的燃料喷射装置(10)技术领域本发明涉及一种用于内燃机的燃料喷射装置(10),其包括两个阀元件(16,18),每个阀元件设置有在关闭方向上有效的液压控制表面(32,34)。 液压控制室(38)被分配给它。 此外,设置控制阀(72),该控制阀(72)影响控制室(38)中的压力,同时设置可在阀元件(16,18)的打开方向上作用的冲击单元(20,22)。 在控制室(38)中出现的阀元件(16,18)的液压开启压力是不同的。 根据本发明,借助于控制阀(72)能够在控制室(38)中调节至少三个不同的压力水平,所有阀元件(16,18)均以相对较高的压力水平关闭,一个阀 元件(18)在中等压力水平下打开,并且所有阀元件(16,18)以相对低的压力水平打开。
    • 6. 发明公开
    • KRAFTSTOFF-EINSPRITZVORRICHTUNG FÜR EINE BRENNKRAFTMASCHINE
    • KRAFTSTOFF-EINSPRITZVORRICHTUNGFÜREINE BRENNKRAFTMASCHINE
    • EP1651858A1
    • 2006-05-03
    • EP04738654.5
    • 2004-06-09
    • ROBERT BOSCH GMBH
    • BOEHLAND, PeterNENTWIG, GodehardBAUER, Michael
    • F02M47/02F02M45/08
    • F02M45/086F02M47/027F02M2200/46F02M2547/003G01N2800/52
    • The invention relates to a fuel injection device (20) for a combustion engine. It comprises a housing (30) and a first valve element (34), which has a first hydraulic control surface (73) acting in the closing direction, and comprises at least one second valve element (36), which has a second hydraulic control surface (75) also acting in the closing direction. A separate hydraulic control space (72, 74) is assigned to each valve element (34, 36), can be connected to a common high-pressure connection (24), and is delimited, at least in areas, by a respective hydraulic control surface (73, 75). A fluid connection (68b) is provided between the control spaces (72, 74). The invention provides that the fuel injection device comprises a valve device (77) with which the fluid connection (68b) can be interrupted.
    • 本发明涉及一种用于内燃机的燃料喷射装置(20)。 它包括壳体(30)和第一阀元件(34),第一阀元件具有沿关闭方向作用的第一液压控制表面(73),并且包括至少一个第二阀元件(36),该第二阀元件具有第二液压控制装置 表面(75)也在关闭方向上起作用。 为每个阀元件(34,36)分配一个单独的液压控制空间(72,74),该控制空间可以连接到共同的高压接头(24),并且至少局部地通过相应的液压控制器 表面(73,75)。 在控制空间(72,74)之间设有流体连接(68b)。 本发明规定,燃料喷射装置包括阀装置(77),流体连接(68b)可以与该阀装置(77)中断。
    • 9. 发明授权
    • EINSPRITZDÜSE
    • EP1853813B1
    • 2008-11-19
    • EP05825330.3
    • 2005-12-21
    • ROBERT BOSCH GMBH
    • STOECKLEIN, WolfgangRAU, AndreasBAUER, MichaelGRUENBERGER, Andreas
    • F02M47/02F02M51/06
    • F02M47/027F02M47/02F02M51/0603
    • The invention relates to an injection nozzle (1) for an internal combustion engine, especially for use in a motor vehicle. Said injection nozzle comprises a nozzle body (2) having at least one orifice (3), an injector needle (5) received in the nozzle body (2) so as to be stroke-adjusted and controlling injection of fuel through the at least one orifice (3), and a booster piston (12) that is drivingly coupled to an actuator (3) and has a booster surface (21). The injector needle (5) or a needle unit (6) comprising the injector needle (5) is/are provided with a control surface (17) that is hydraulically coupled to the booster surface (21). The aim of the invention is to provide a system that allows for the exact control of small and large injection quantities. For this purpose, a compensation piston (25) is received in the booster piston (12) so as to be stroke-adjusted. Said compensation piston (25) has a compensation surface (26) that is hydraulically coupled to the booster surface (21). The compensation piston (25), in an initial position in which the injector needle (5) blocks the at least one orifice (3), rests against a stop (32) that is stationary with respect to the nozzle body (2). The compensation piston (25) has a storage surface (27) that delimits a storage compartment (28) configured in the booster piston (12).
    • 用于内燃机的喷嘴(1)技术领域本发明涉及一种用于内燃机的喷嘴(1),尤其是用于机动车辆的内燃机。 所述喷嘴包括具有至少一个孔口(3)的喷嘴主体(2),容纳在喷嘴主体(2)中的喷嘴针(5),以便行程调节并且控制燃料通过所述至少一个 (3)以及与致动器(3)驱动连接并具有助力器表面(21)的助力器活塞(12)。 包括注射器针(5)的注射器针(5)或针单元(6)设置有与增压器表面(21)液压耦合的控制表面(17)。 本发明的目的是提供一种允许精确控制小喷射量和大喷射量的系统。 为此目的,补偿活塞(25)容纳在增压活塞(12)中以便行程调节。 所述补偿活塞(25)具有液压联接到增压器表面(21)的补偿表面(26)。 补偿活塞(25)在喷射器针头(5)阻塞至少一个孔口(3)的初始位置中抵靠相对于喷嘴本体(2)静止的止动件(32)。 补偿活塞(25)具有界定构造在增压器活塞(12)中的储存室(28)的储存表面(27)。