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24 条记录 (耗时 0.017 秒)

    DISPOSITIF D'INJECTION DE FLUIDE
    1.
    发明公开
    DISPOSITIF D'INJECTION DE FLUIDE 有权
    流体注入设备

    公开(公告)号：EP2324230A1

    公开(公告)日：2011-05-25

    申请号：EP09740409.9

    申请日：2009-07-29

    申请人： Renault S.A.S.

    发明人： AGNERAY, André ,  MALEK, Nadim ,  LEVIN, Laurent

    IPC分类号： F02M51/06 ,  F02M69/04

    CPC分类号： F02M69/041 ,  F02M51/0603 ,  F02M2200/02 ,  F02M2200/304 ,  F02M2200/705

    摘要： The invention relates to an injector (7) having an injection axis (AB) and comprising: a housing (2) including an axial cavity (20); an actuator (3) including an electrically active portion (30) and having a first front surface (31) extending in the form of a penetrating member (33), and a second front surface (32) opposite the first one (31), the actuator (3) being mounted in the housing (2) and the member (33) including a piston (330) inserted into said cavity (20) and defining a fluidic link between the actuator (3) and the housing (2); an excitation means for vibrating the electrically active portion (30) of the actuator (3) at a setpoint period τ. According to the invention, the penetrating member (33) has a length (L) such that the propagation time (T) of the acoustic waves running therethrough corresponds to the equation: T = [2n+1]*[τ/4], where n is a positive-integer multiplier coefficient.

    DISPOSITIF D'INJECTION DE FLUIDE
    2.
    发明公开
    DISPOSITIF D'INJECTION DE FLUIDE 审中-公开
    液体喷射装置

    公开(公告)号：EP2158398A2

    公开(公告)日：2010-03-03

    申请号：EP08806079.3

    申请日：2008-06-25

    申请人： Renault S.A.S.

    发明人： AGNERAY, André ,  MALEK, Nadim ,  LEVIN, Laurent ,  PARIENTE, Marc

    IPC分类号： F02M45/08 ,  F02M51/06 ,  F02M61/08

    CPC分类号： F02M45/10 ,  F02M45/08 ,  F02M61/08 ,  F02M69/041 ,  F02M2200/21

    摘要： The invention relates to a fluid injection device (131) having a main injection axis (AB) and including at least: a housing (1); an actuator (2) axially mounted in the housing (1) and comprising a stack with two axially opposed front faces (C, D) and including at least one electro-active portion (22) with an electro-active material; and a pre-stressing means adapted for at least partially pre-stressing said stack. According to the invention, the pre-stressing means includes at least a tightening clamp (25) outside the stack and provided between the stack and the housing (1).

    DISPOSITIF D'INJECTION DE FLUIDE
    6.
    发明公开
    DISPOSITIF D'INJECTION DE FLUIDE 审中-公开

    公开(公告)号：EP2158399A2

    公开(公告)日：2010-03-03

    申请号：EP08806078.5

    申请日：2008-06-25

    申请人： Renault S.A.S.

    发明人： AGNERAY, André ,  MALEK, Nadim ,  LEVIN, Laurent ,  PARIENTE, Marc

    IPC分类号： F02M45/10 ,  F02M61/08 ,  F02M61/10 ,  F02M61/16

    CPC分类号： F02M45/10 ,  F02M61/08 ,  F02M69/041 ,  F02M2200/21

    摘要： The invention relates to an injector including a needle mounted in a nozzle and having an end defining a valve, the needle being connected at the other end to an actuator including first, second and third portions, the first and third portions being provided on either side of the second portion, the three portions being tightened together in order to form a block having two axially opposite limits, the first portion being connected with the needle at one of said limits, and an excitation means for vibrating the second portion according to setpoint period τ. According to the invention, the length between the two limits of the block is such that the propagation time T of the acoustic waves generated by the vibrations of the second portion of the actuator and running along that length meets the equation: T = n*[τ/2], where n is an integer positive multiplication coefficient different from zero.

    摘要翻译： 本发明涉及一种注射器，其包括安装在喷嘴中并具有限定阀的端部的针，所述针的另一端连接到包括第一部分，第二部分和第三部分的致动器，第一部分和第三部分设置在任一侧 所述三个部分被紧固在一起以便形成具有两个轴向相对限制的块体，所述第一部分在所述界限之一处与所述针连接，以及用于根据设定点周期使所述第二部分振动的激励装置 τ。 根据本发明，块的两个极限之间的长度使得由致动器的第二部分的振动产生并沿该长度延伸的声波的传播时间T满足以下等式：T = n * [ τ/ 2]，其中n是不等于零的整数正乘法系数。

    DISPOSITIF D'INJECTION DE CARBURANT ET PROCEDE DE COMMANDE D'UN TEL DISPOSITIF
    7.
    发明公开
    DISPOSITIF D'INJECTION DE CARBURANT ET PROCEDE DE COMMANDE D'UN TEL DISPOSITIF 有权
    燃料喷射装置及其控制方法本设备

    公开(公告)号：EP1913253A1

    公开(公告)日：2008-04-23

    申请号：EP06794493.4

    申请日：2006-07-20

    申请人： RENAULT S.A.S.

    发明人： GUERBAOUI, Samir ,  AGNERAY, André ,  LEVIN, Laurent

    IPC分类号： F02M51/06 ,  F02M61/08

    CPC分类号： F02M69/041 ,  F02M51/0603

    摘要： The inventive fuel injecting device comprises a cylindrical body (11, 12), a needle (2) whose end is provided with a head (20) forming a valve on a seat (14) supported by the end of the cylindrical body, an actuator (3) which is made of an electroactive material, is provided with a rod and displaces the head (20) in such a way that the valve is opened and a prestressing device holding the needle and a counterweight in such a way that they are pressed against the rod opposite end. The needle (2) extends coaxially to the cylindrical body (11, 12) in the form of a rigid bar and axially resonates when it is exposed to axial pulses at a determined excitation frequency by the actuator (3). A method for controlling said device is also disclosed.

    DISPOSITIF D'INJECTION DE FLUIDE
    10.
    发明公开
    DISPOSITIF D'INJECTION DE FLUIDE 审中-公开
    流体注入设备

    公开(公告)号：EP2150695A2

    公开(公告)日：2010-02-10

    申请号：EP08805893.8

    申请日：2008-05-29

    申请人： Renault S.A.S.

    发明人： AGNERAY, André ,  MALEK, Nadim ,  PARIENTE, Marc ,  LEVIN, Laurent

    IPC分类号： F02M45/10 ,  F02M61/08

    CPC分类号： F02M45/10 ,  F02M61/08 ,  F02M69/041 ,  F02M2200/21

    摘要： The invention relates to an injector comprising a nozzle that includes an opening and a seat, a needle movably mounted in the nozzle and having an end defining a valve in a contact area with the seat, a means for vibrating the valve, a first acoustic-impedance breaking area at a first distance from the valve along the nozzle, and another first acoustic-impedance breaking area at a second distance from the valve along the needle. According to the invention, each of the first and second distances is such that the respective propagation time of acoustic waves along said distance is: Ti = ni *[ζ/2], where r\\ is a positive integer coefficient different from zero with i = 3 for the first distance and i = 4 for the second distance, ζ being a period of the vibrations.