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    Timing angle and speed measurement of shafts
    1.
    发明公开
    Timing angle and speed measurement of shafts 失效
    Winkelstellungs- und Geschwindigkeitsmessung von Wellen。

    公开(公告)号：EP0059585A2

    公开(公告)日：1982-09-08

    申请号：EP82300906.3

    申请日：1982-02-23

    申请人： CATERPILLAR INC.

    发明人： Stevenson, Thomas T. ,  Zenios, Marios C.

    IPC分类号： G01P3/489 ,  G01P3/56

    CPC分类号： F02D41/0097 ,  G01P3/489 ,  G01P3/56

    摘要： Apparatus for determining the speed of an engine (10) and the phase shift between first and second shafts (16, 19) rotatably driven by the engine (10). First and second fixed magnetic sensors (50, 56) generate first and second signals (49, 55) in response to movement of magnetically sensible members (47, 53) through circular paths at speeds proportional to the speeds of the first and second shafts (16, 19), respectively. Clock pulses from a fixed frequency clock (65) are counted to obtain a first count between successive first signals (49) and a second count between successive second and first signals (55, 49). The first count is inverted to obtain information as to the instantaneous engine speed. The second count is divided by the first count to obtain information as to the instantaneous phase angle between the first and second shafts (16, 19). Successive instantaneous information is averaged to cancel the effects of engine torsionals. The present invention is particularly useful in engine control systems requiring rapid updating of information as to the speed and timing advance angle of the engine.

    摘要翻译： 用于确定发动机（10）的速度的装置以及由发动机（10）可旋转地驱动的第一和第二轴（16,19）之间的相移。 第一和第二固定磁传感器（50,56）响应于磁性构件（47,53）以与第一和第二轴的速度成比例的圆周路径的移动产生第一和第二信号（49,55） 16，19）。 计数来自固定频率时钟（65）的时钟脉冲，以获得连续的第一信号（49）和连续的第二和第一信号（55,49）之间的第二计数的第一计数。 第一个计数被反转以获得有关瞬时发动机转速的信息。 将第二计数除以第一计数，以获得关于第一和第二轴（16,19）之间的瞬时相位角的信息。 连续瞬时信息被平均以消除发动机扭转的影响。 本发明在需要快速更新关于发动机的速度和定时提前角的信息的发动机控制系统中特别有用。

    Engine control system
    2.
    发明公开
    Engine control system 失效
    Steuerungsystem eines汽车公司。

    公开(公告)号：EP0059586A2

    公开(公告)日：1982-09-08

    申请号：EP82300907.1

    申请日：1982-02-23

    申请人： CATERPILLAR INC.

    发明人： Stevenson, Thomas T. ,  Zenios, Marios C. ,  Szentes, John F.

    IPC分类号： F02D41/40

    CPC分类号： F02D41/401 ,  F02B3/06 ,  F02B2075/027 ,  F02D41/2422 ,  F02D2200/0406 ,  F02D2200/703 ,  F02D2250/32 ,  F02D2250/38 ,  Y02T10/44

    摘要： An electronic engine control system is proposed utilizing a digital microprocessor for controlling the timing mechanism (13) and fuel pump rack limit (23) to set the engine timing of, and maximum allowable rate of fuel delivery to, an integral combustion engine (11) so that maximum engine performance is obtained with smoke and emissions limited to required levels. A plurality of timing maps (61-64) are provided, for different modes of engine operation, each map having predetermined timing control signals values programmed therein corresponding to the optimal timing advance at a particular engine speed, or particular optimal timing advance at a particular engine speed, or a particular combination of engine speed and position of the fuel rack (21). A timing map selector (65) identifies the mode of engine operation and selects the appropriate timing map (61-64) to control the timing mechanism (13) by the particular programmed signal for the existing engine speed and fuel rack position. A similar map (71-74) will output a particular programmed fuel/air signal in accordance with the existing engine speed and timing, the fuellair signal having been predetermined to correspond to the maximum fuel/air ratio for fuel combusion to meet set limits for that engine speed and timing. The fuel/air signal is multiplied in accordance with existing manifold pressure and the resultant fuel delivery signal is used to set the rack limit for maximum allowable fuel delivery to the engine.

    摘要翻译： 提出了一种电子发动机控制系统，其利用数字微处理器来控制定时机构（13）和燃油泵机架极限（23），以将整体燃烧发动机（11）的发动机正时和最大允许燃油输送速率设定为一体， 从而获得最大的发动机性能，烟雾和排放限制在所需的水平。 提供了多个定时图（61-64），用于不同的发动机操作模式，每个地图具有在其中编程的预定定时控制信号值，其中对应于在特定发动机速度下的最佳定时提前，或特定的最佳定时提前 发动机转速或发动机速度和燃料架（21）的位置的特定组合。 定时图选择器（65）识别发动机操作的模式，并选择适当的定时图（61-64）以通过用于现有发动机转速和燃料架位置的特定编程信号来控制定时机构（13）。 类似的地图（71-74）将根据现有的发动机转速和时间输出一个特定的编程的燃料/空气信号，燃料/空气信号已被预先确定为与用于燃料组合的最大燃料/空气比对应以满足设定 限制发动机转速和时间。 燃料/空气信号根据现有的歧管压力相乘，并且所得到的燃料输送信号用于设定发动机最大允许燃油输送的齿条极限。