Dual lift actuation means
    8.
    发明授权
    Dual lift actuation means 失效
    双升力驱动装置

    公开(公告)号:US5697333A

    公开(公告)日:1997-12-16

    申请号:US803339

    申请日:1997-02-20

    IPC分类号: F01L13/00

    摘要: A valve control system for an internal combustion engine including a poppet valve (21) and high lift (15) and low lilt (31) cam lobes. A latchable rocker arm includes an outer rocker arm (33) and an inner rocker arm (35), and a slider mechanism (37) which is biased by a spring (67) to the high lilt mode (FIG. 1). An actuator assembly (27) includes and arm (103) biased by a spring (101) into engagement with the slider (37), biasing the slider toward the unlatched (low lift) mode (FIG. 2 ). The actuator (27) includes an electromagnetic coil (83) which moves an armature (87) into engagement with the arm (103), biasing the arm in opposition to the force of the actuator spring (101), but aided initially by the force of the slider spring (67).

    摘要翻译: 一种用于内燃机的阀控制系统,其包括提升阀(21)和高升程(15)和低叶片(31)凸轮凸角。 可锁定的摇臂包括外摇臂(33)和内摇臂(35),以及由弹簧(67)偏压到高速模式(图1)的滑块机构。 致动器组件(27)包括通过弹簧(101)偏置成与滑块(37)接合的臂(103),将滑块朝向解锁(低提升)模式(图2)偏置。 致动器(27)包括电磁线圈(83),其使衔铁(87)与臂(103)接合,使臂相对于致动器弹簧(101)的力偏置,但最初由力 的滑块弹簧(67)。

    Position control strategy EGR valve actuator
    9.
    发明授权
    Position control strategy EGR valve actuator 有权
    位置控制策略EGR阀执行器

    公开(公告)号:US06698408B2

    公开(公告)日:2004-03-02

    申请号:US10192871

    申请日:2002-07-10

    IPC分类号: F02M2507

    摘要: A method of controlling exhaust gas recirculation by means of an EGR valve (55). An electromagnetic actuator (41) is associated with a housing (47) to transmit movement of an actuator output (75) into reciprocating movement of the EGR valve in response to changes in an electrical input signal (95), and the method comprises generating (93) a compensator gain value to modify the electrical input signal (95). The improved method provides a valve position sensor (79) and generates a position signal (97) representing instantaneous valve position. The next step is storing (105) a first relationship (DCTHLD) of the electrical input signal (95) required to change the instantaneous valve position, then, during ongoing operation, generating (105) a then-current, second relationship (DC) of the electrical input signal (95) required to change the instantaneous valve position. Next is comparing (105) the second relationship (DC) to the first (DCTHLD) and generating (111) a corresponding difference factor, then using (111) that difference factor to modify (93) the compensator gain value correspondingly. This method enables the system to adapt to changes in system friction.

    摘要翻译: 一种通过EGR阀(55)控制废气再循环的方法。 电磁致动器(41)与壳体(47)相关联,以响应于电输入信号(95)的变化而将致动器输出(75)的运动传递到EGR阀的往复运动,并且该方法包括: 93)补偿器增益值以修改电输入信号(95)。 改进的方法提供阀位置传感器(79)并产生表示瞬时阀位置的位置信号(97)。 下一步是存储(105)改变瞬时阀位置所需的电输入信号(95)的第一关系(DCTHLD),然后在正在进行的操作期间产生(105)当前的第二关系(DC) 改变瞬时阀位置所需的电输入信号(95)。 接下来将(105)第二关系(DC)与第一(DCTHLD)进行比较,并产生(111)对应的差分因子,然后使用(111)差分因子来相应地修正(93)补偿器增益值。 该方法使系统适应系统摩擦的变化。

    EGR assembly mounted on exhaust system of a heavy duty diesel engine
    10.
    发明授权
    EGR assembly mounted on exhaust system of a heavy duty diesel engine 有权
    EGR组件安装在重型柴油发动机的排气系统上

    公开(公告)号:US06216677B1

    公开(公告)日:2001-04-17

    申请号:US09393538

    申请日:1999-09-10

    IPC分类号: F02M2504

    CPC分类号: F02M26/67 F02M26/23 F02M26/54

    摘要: An exhaust gas recirculation (EGR) assembly (23) for an internal combustion engine, including an EGR valve (54) having a valve stem (55) reciprocating within a housing (61), between open (FIG. 3) and closed positions. Preferably, the EGR assembly is mounted on the exhaust manifold (15), and the EGR valve can communicate exhaust gas back to the intake manifold (13) in a known manner. The EGR assembly includes an electric motor (41), and a gear train (65) to move the EGR valve (54) in response to changes in an electrical input signal. A plurality of power electronic components (97) are disposed within a controls housing (91), which defines a slot (99) in face-to-face relation to a cooling chamber (81) defined by the housing (61) surrounding the valve stem (55). The cooling chamber (81) and the slot (99) cooperate to define a coolant passage, and the valve stem (55) and the power components (97) are in close proximity to the coolant passage, thus permitting the use of less expensive electrical components, rated for relatively lower temperatures.

    摘要翻译: 一种用于内燃机的废气再循环(EGR)组件(23),其包括具有在壳体(61)内往复运动的阀杆(55)的EGR阀(54),其在打开(图3)和关闭位置之间。 优选地,EGR组件安装在排气歧管(15)上,并且EGR阀可以以已知的方式将排气返回到进气歧管(13)。 EGR组件包括电动机(41)和响应于电输入信号的变化而移动EGR阀(54)的齿轮系(65)。 多个电力电子部件(97)设置在控制壳体(91)内,该控制壳体限定与由围绕阀门(61)限定的壳体(61)限定的冷却室(81)的面对面关系的槽(99) 茎(55)。 冷却室(81)和槽(99)协作以形成冷却剂通道,并且阀杆(55)和动力部件(97)非常靠近冷却剂通道,从而允许使用较便宜的电 组件,额定温度相对较低。