Fuel injector with adjustable-metering servo valve for an internal-combustion engine
    71.
    发明申请
    Fuel injector with adjustable-metering servo valve for an internal-combustion engine 有权
    燃油喷射器,内置可调式计量伺服阀

    公开(公告)号:US20070251498A1

    公开(公告)日:2007-11-01

    申请号:US11784946

    申请日:2007-04-10

    IPC分类号: F02M59/46

    摘要: An injector with an adjustable-metering servo valve is provided. The injector has a shutter actuated by an armature of an electromagnet. The armature is mobile for an opening stroke defined by a surface of the core of the electromagnet, which is fixed in the casing by a ring nut and a hollow support of the core. The hollow support has a first contact surface that acts on a flange of the core. Set between the surface and a shoulder of the casing is a shim. An annular projection, having a second contact surface, is set between the surface and a shoulder of the casing. The second contact surface is contained at least in part in the area corresponding to the first contact surface so that the stroke of the armature is adjusted by plastic deformation of the shim or of the surface of the core.

    摘要翻译: 提供一个带有可调计量伺服阀的进样器。 喷射器具有由电磁体的电枢驱动的快门。 电枢可移动,用于由电磁体的芯的表面限定的开口行程,电动机的芯体通过环形螺母和芯的中空支撑件固定在壳体中。 中空支撑件具有作用在芯的凸缘上的第一接触表面。 套管的表面和肩膀之间是垫片。 具有第二接触表面的环形突起被设置在壳体的表面和肩部之间。 第二接触表面至少部分地包含在对应于第一接触表面的区域中,使得通过垫片或芯的表面的塑性变形来调节电枢的行程。

    SERVO VALVE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE INJECTION
    72.
    发明申请
    SERVO VALVE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE INJECTION 有权
    用于控制内燃机喷射的伺服阀

    公开(公告)号:US20070205302A1

    公开(公告)日:2007-09-06

    申请号:US11741474

    申请日:2007-04-27

    IPC分类号: F02M41/16

    摘要: A control servo valve is housed inside the casing of an internal combustion engine fuel injector, and has an actuator, a control chamber communicating with a fuel inlet and with a fuel outlet passage, and a shutter movable along an axis by the actuator between a closed position and an open position to close and open the outlet passage respectively; the servo valve also has a fixed axial rod interposed between the actuator and the control chamber; the outlet passage comes out through an outer lateral surface of the axial rod; and the shutter is defined by a sleeve which slides axially on the outer lateral surface, and, in the closed position, closes the outlet passage so as to be subjected to a zero axial resultant force by the pressure of the fuel.

    摘要翻译: 控制伺服阀被容纳在内燃机燃料喷射器的壳体内,并且具有致动器,与燃料入口连通的控制室和燃料出口通道,以及通过致动器沿着轴可在闭合 位置和打开位置分别关闭和打开出口通道; 伺服阀还具有夹在致动器和控制室之间的固定轴向杆; 出口通道通过轴杆的外侧表面出来; 并且挡板由在外侧表面上轴向滑动的套筒限定,并且在关闭位置中封闭出口通道,以便通过燃料的压力经受零轴向合力。

    Fuel-injection system for an internal-combustion engine and corresponding method for controlling fuel injection
    73.
    发明授权
    Fuel-injection system for an internal-combustion engine and corresponding method for controlling fuel injection 有权
    用于内燃机的燃料喷射系统和用于控制燃料喷射的相应方法

    公开(公告)号:US07240859B2

    公开(公告)日:2007-07-10

    申请号:US11391443

    申请日:2006-03-29

    IPC分类号: B05B1/30

    摘要: A fuel-injection system in an internal-combustion engine is provided with an electroinjector (1) comprising an injection nozzle (5), and a needle (7) mobile along an opening stroke and a closing stroke for opening/closing the nozzle (5) under the control of an electroactuator device (8). The opening stroke of the needle (7) is controlled by a rod (14) pushed by the pressure of the fuel in a control chamber (15), in such a way as to keep the needle (7) normally in the position for closing the nozzle (5). The control chamber (15) is equipped with an inlet duct (18) having a pre-set diameter (D4) and with an outlet passage (24) having a diameter (D5) and controlled by a control valve (16). The method for controlling fuel injection comprises the steps of choosing the ratio (D5/D4) of the aforesaid diameters so as to determine a certain rate of displacement of the needle (7), and issuing to the device (8) a first electrical command (C1) and a second electrical command (C2) sufficiently close to one another to displace the needle (7) with a profile of motion (P) without any discontinuities in time.

    摘要翻译: 在内燃机中的燃料喷射系统设置有电喷射器(1),其包括喷射喷嘴(5)和沿打开行程移动的针(7)和用于打开/关闭喷嘴(5)的关闭行程 )在电致动器装置(8)的控制下。 针(7)的打开行程由通过控制室(15)中的燃料压力推动的杆(14)来控制,以使针(7)保持正常的位置 喷嘴(5)。 控制室(15)装备有具有预设直径(D 4 S)的入口管道(18),并且具有直径(D <5> 5)的出口通道(24) / SUB>)并由控制阀(16)控制。 用于控制燃料喷射的方法包括以下步骤:选择上述直径的比(D 5 / D 4/4),以便确定针的一定的位移速率 (7),并且向所述设备(8)发出彼此充分接近的第一电命令(C 1> 1)和第二电命令(C SUB2&lt; 2&gt;)以使位移 具有运动轮廓(P)的针(7)在时间上没有任何不连续性。

    High-pressure pump for a fuel, with sump in communication with the fuel
    74.
    发明申请
    High-pressure pump for a fuel, with sump in communication with the fuel 有权
    用于燃料的高压泵,具有与燃料连通的贮槽

    公开(公告)号:US20070144488A1

    公开(公告)日:2007-06-28

    申请号:US11392847

    申请日:2006-03-29

    IPC分类号: F02M57/02

    摘要: The pump (7) is provided with a body (16) having a compartment (17), and with at least one pumping element (13) that moves in a cylinder (12) in communication with the compartment (17), to raise the pressure of the fuel. The pump (7) comprises fluid-supply means (14, 22) for delivering the fuel to the pumping element (13), and an inlet mouth (26) made in the body (16) and supplied with the fuel coming directly from an external source (2). The inlet mouth (26) is fluidically connected to the compartment (17) to supply it with the fuel in order to lubricate and/or cool the pump (7) itself. Set between the inlet mouth (26) and the compartment (17) are: a non-return valve (33) to prevent in any case the pumping elements (13) from sucking the fuel from the compartment (17) of the body (16); and a flow regulator (29′), which allows an amount of fuel to pass such as to enable proper lubrication and cooling of the compartment (17) and of the parts present in the compartment (17). The fluid-supply means (14, 22) comprise at least one further inlet mouth (24) made in the body (16) and fluidically connected with the pumping element (13) by means of pipes (9).

    摘要翻译: 泵(7)设置有具有隔室(17)的本体(16),并且具有与在隔室(17)连通的气缸(12)中移动的至少一个泵送元件(13) 燃料的压力。 泵(7)包括用于将燃料输送到泵送元件(13)的流体供应装置(14,22)和在主体(16)中制成并供应直接来自燃料的燃料的入口(26) 外部来源(2)。 入口(26)流体地连接到隔室(17)以便向其供应燃料以便润滑和/或冷却泵(7)本身。 设置在入口(26)和隔室(17)之间的是:止回阀(33),以防止在任何情况下泵送元件(13)从主体(16)的隔室(17)吸入燃料 ); 以及流量调节器(29'),其允许一定量的燃料通过,以便能够适当地润滑和冷却隔室(17)和存在于隔室(17)中的部件。 流体供应装置(14,22)包括在主体(16)中制成的至少一个另外的入口(24),并且通过管道(9)与泵送元件(13)流体连接。

    Device for connection between a rail for fuel under pressure and at least one injector, for an internal-combustion engine
    75.
    发明申请
    Device for connection between a rail for fuel under pressure and at least one injector, for an internal-combustion engine 有权
    用于在压力下的燃料的轨道与用于内燃机的至少一个喷射器之间连接的装置

    公开(公告)号:US20070006848A1

    公开(公告)日:2007-01-11

    申请号:US11356313

    申请日:2006-02-17

    IPC分类号: F02M69/46 F02M55/02

    CPC分类号: F02M55/025 F02M55/005

    摘要: The device comprises a connection tube (13) in communication with a hole (11) of a rail (7) for fuel under pressure, the tube (13) being provided with an end swelling (16). The device comprises a first threaded element (18) fixed to the rail (7) in a position corresponding to the hole (11) and a second threaded element (19) designed to engage the first threaded element (18). Removably set between the hole (11) and the swelling (16) is a seal element (21) designed to form a seal both with the hole (11) and with the swelling (16). The seal element (21) is a body of revolution (23) equipped with a passage (25) along a pre-set axis (A), and comprises two end noses (26, 27) designed to be inserted in the swelling (16) and in the hole (11), respectively, and two tapered seal stretches (28, 29).

    摘要翻译: 该装置包括与用于燃料压力的导轨(7)的孔(11)连通的连接管(13),管(13)设置有端部膨胀(16)。 该装置包括在与孔(11)对应的位置固定到轨道(7)的第一螺纹元件(18)和设计成接合第一螺纹元件(18)的第二螺纹元件(19)。 可移动地设置在孔(11)和膨胀部(16)之间的密封元件(21)被设计成与孔(11)和膨胀(16)形成密封。 密封元件(21)是沿着预设轴线(A)装备有通道(25)的旋转体(23),并且包括设计成插入膨胀部分(16)中的两个端部鼻部(26,27) )和孔(11)中的两个锥形密封段(28,29)。

    Adjustable metering servovalve for a fuel injector, and relative adjustment method
    76.
    发明申请
    Adjustable metering servovalve for a fuel injector, and relative adjustment method 有权
    燃油喷射器可调式计量伺服阀及相对调节方式

    公开(公告)号:US20060202145A1

    公开(公告)日:2006-09-14

    申请号:US11357594

    申请日:2006-02-17

    IPC分类号: F16K31/02

    摘要: The metering servovalve (7) includes a valve body (8, 30), a shutter (45), and an electromagnet (15), and is housed inside a casing (2) of the injector (1). The electromagnet (15) activates a movable armature (16) performing a travel defined by a stop member (19) carried by the electromagnet (15), which is fixed inside the casing by a threaded ring nut (40) with the interposition of at least one deformable shim (48). The ring nut (40) is screwed to a predetermined tightening torque to a thread (46) on the casing (2) to elastically deform the shim (48). And the shim (48) is defined by a metal ring with, for example, an L-, C-, S-, Z- or Σ-shaped cross section.

    摘要翻译: 计量伺服阀(7)包括阀体(8,30),闸​​板(45)和电磁铁(15),并且容纳在喷射器(1)的壳体(2)内。 电磁铁(15)启动执行由由电磁体(15)承载的止动构件(19)限定的移动的可动电枢(16),该电动机通过螺纹环形螺母(40)固定在壳体内,插入在 至少一个可变形垫片(48)。 环形螺母(40)以预定的紧固扭矩旋拧到壳体(2)上的螺纹(46)上,以使垫片(48)弹性变形。 并且垫片(48)由具有例如L,C,S,Z-或者Σ形截面的金属环限定。

    Gas feeding system for an internal combustion engine, having an improved pressure reducing valve
    77.
    发明授权
    Gas feeding system for an internal combustion engine, having an improved pressure reducing valve 失效
    一种用于内燃机的气体供给系统,具有改进的减压阀

    公开(公告)号:US07073490B2

    公开(公告)日:2006-07-11

    申请号:US11054545

    申请日:2005-02-10

    IPC分类号: F02B53/04

    摘要: In a gas-supply system for internal-combustion engines, a pressure-reducing valve is set between the reservoir of the gas and a distribution manifold or rail that feeds the gas to a series of electromagnetically controlled injectors associated to the various cylinders of the engine. The pressure-reducing valve has a piston member that faces a chamber set downstream of a restricted passage defined inside the body of the valve in communication between the inlet connector and the outlet connector. The piston member is pushed by thrust means towards a position in which it causes opening of an open/close element (valve head) that controls the communication between said restricted passage and the inlet connector. The piston member is preferably provided with a single seal gasket that prevents leakage of gas towards the outside through the sliding coupling of the piston member within the respective guide bushing. The thrust means to which the piston member is subject may be constituted by spring means, or else by a pilot-pressure signal, in the case where it is intended to obtain a variable reduction of the pressure according to the operating conditions of the system.

    摘要翻译: 在用于内燃机的气体供应系统中,减压阀设置在气体储存器和分配歧管或轨道之间,该分配歧管或轨道将气体供给到与发动机的各个气缸相关联的一系列电磁控制的喷射器 。 减压阀具有活塞构件,该活塞构件面对设置在限定通道的下游的室,限定通道限定在入口连接器和出口连接器之间连通的阀体内部。 活塞构件被推动装置推向一个打开/关闭元件(阀头)的位置,该打开/关闭元件(阀头)控制所述限制通道和入口连接器之间的连通。 活塞构件优选地设置有单个密封垫圈,其通过活塞构件在相应导向衬套内的滑动联接来防止气体向外部泄漏。 在旨在根据系统的操作条件获得压力可变减小的情况下,活塞构件所承受的推力装置可以由弹簧装置构成,或者由先导压力信号构成。

    Method for obtaining a fuel injector for an internal-combustion engine, and an injector made according to said method
    80.
    发明申请
    Method for obtaining a fuel injector for an internal-combustion engine, and an injector made according to said method 有权
    用于获得用于内燃机的燃料喷射器的方法和根据所述方法制造的喷射器

    公开(公告)号:US20060000931A1

    公开(公告)日:2006-01-05

    申请号:US11111065

    申请日:2005-04-21

    IPC分类号: B05B1/30

    摘要: A fuel injector for an internal-combustion engine comprises an injector body and an injection-control valve, which in turn comprises: an open/close element; an elastic thrust element for pushing the open/close element; and a solenoid actuator, which can be actuated for exerting an action countering the thrust exerted by the elastic element. The solenoid actuator is formed by a monolithic assembly obtained in a mould, in which there is injected, on a core and a coil coupled to one another, a plastic material, which defines, once it has solidified, a body for insulation of the core from the injector body and which forms, once it has solidified, a monolithic assembly with the core and the coil.

    摘要翻译: 用于内燃机的燃料喷射器包括喷射器主体和喷射控制阀,该喷射器主体和喷射控制阀又包括开/关元件; 用于推动打开/关闭元件的弹性止推元件; 以及螺线管致动器,其可被致动以发挥抵抗由弹性元件施加的推力的作用。 螺线管致动器由在模具中获得的整体组件形成,其中注入在芯体和彼此联接的线圈上,塑料材料一旦固化就限定了用于绝缘芯体的主体 一旦它已经凝固,从注射器本体形成一个具有芯和线圈的整体式组件。