Logic circuit test system
    1.
    发明授权
    Logic circuit test system 失效
    逻辑电路测试系统

    公开(公告)号:US4583041A

    公开(公告)日:1986-04-15

    申请号:US615793

    申请日:1984-05-31

    申请人: Shigehiro Kimura

    发明人: Shigehiro Kimura

    CPC分类号: G01R31/317 G01R31/31908

    摘要: A test system for simultaneously testing a plurality of logic circuits first sets them all to an initial state before beginning testing. The faulty logic circuits which cannot be set to the initial state can be identified, and the testing of the others can proceed, even after only one cycle of attempting to initialize all the logic circuits. If all the logic circuits are faulty, the further testing can be prevented.

    摘要翻译: 用于同时测试多个逻辑电路的测试系统首先在开始测试之前将它们全部设置为初始状态。 可以识别不能设置为初始状态的故障逻辑电路,并且即使在尝试初始化所有逻辑电路的一个周期之后,也可以进行其他逻辑电路的测试。 如果所有逻辑电路都有故障,可以防止进一步的测试。

    Control of ignition timing upon occurrence of abnormality in a reference
crank angle position sensing system
    4.
    发明授权
    Control of ignition timing upon occurrence of abnormality in a reference crank angle position sensing system 失效
    在参考曲柄角位置检测系统中发生异常时的点火正时控制

    公开(公告)号:US4690123A

    公开(公告)日:1987-09-01

    申请号:US865523

    申请日:1986-05-21

    IPC分类号: F02P5/15 F02P15/00 F02P9/00

    摘要: A method of controlling ignition timing of an internal combustion engine when an abnormality develops in a system for sensing a reference crank angle position of a crankshaft of the engine, in which the timing at which an ignition coil starts and stops conducting is controlled on the basis of a first pulse signal generated once per at least two revolutions of the crankshaft at a predetermined crank angle position associated with a particular cylinder of the engine, a second pulse signal indicative of a predetermined reference crank angle position of the crankshaft for each cylinder, and a third pulse signal indicative of a predetermined angular position of the crankshaft. The method comprises the steps of sensing an abnormality in the reference crank angle position sensing system for sensing the predetermined reference crank angle position, generating a pseudo-signal pulse having a predetermined pulse width in place of the second pulse signal on the basis of the first and third pulse signals when the second pulse signal fails to be generated because of the abnormality in the reference crank angle position sensing system, starting conduction of the ignition coil at a leading edge of the pseudo-signal pulse, and stopping conduction of the ignition coil at a trailing edge of the pseudo-signal pulse.

    摘要翻译: 控制点火线圈的起动停止定时的发动机的曲轴的基准曲柄角位置检测系统中发生异常时的内燃机的点火正时的控制方法, 在与发动机的特定气缸相关联的预定曲柄角度位置处,在曲轴的至少两圈中产生一次的第一脉冲信号,指示每个气缸的曲轴的预定基准曲柄角位置的第二脉冲信号,以及 指示曲轴的预定角位置的第三脉冲信号。 该方法包括以下步骤:感测参考曲柄角位置检测系统中的异常,用于感测预定的参考曲柄角位置,基于第一和第二脉冲信号产生具有预定脉冲宽度的伪信号脉冲代替第二脉冲信号 以及由于基准曲柄角位置检测系统的异常而导致第二脉冲信号不能产生的第三脉冲信号,在伪信号脉冲的前端开始导通点火线圈,并停止点火线圈的导通 在伪信号脉冲的后沿。

    Method of detecting abnormality in crank angle signal of internal
combustion engines
    5.
    发明授权
    Method of detecting abnormality in crank angle signal of internal combustion engines 失效
    内燃机曲柄角信号异常检测方法

    公开(公告)号:US4788956A

    公开(公告)日:1988-12-06

    申请号:US866603

    申请日:1986-05-23

    摘要: A method of detecting an abnormality in a crank angle signal of an internal combustion engine having a crankshaft. The method comprises the steps of monitoring the condition of a first reference position signal generated at a predetermined crank angle position of the crankshaft and the condition of a second position signal generated whenever the crankshaft rotates through a predetermined rotational angle, setting a first flag to a predetermined logical state if the first reference position signal is generated before the second position signal is generated a predetermined number of times after generation of the first reference position signal, setting a second flag to a predetermined logical state if the first reference position signal is not generated after the second position signal has been generated said predetermined number of times after generation of the first reference position signal and before an immediately succeeding generation of the second position signal; and detecting an abnormality in one of the first reference position signal and second position signal based on a predetermined combination of logical states exhibited by the first and second flags.

    摘要翻译: 一种检测具有曲轴的内燃机的曲柄角信号的异常的方法。 该方法包括以下步骤:监测在曲轴的预定曲柄角位置处产生的第一参考位置信号的状态以及每当曲轴旋转预定旋转角度时产生的第二位置信号的状态,将第一标志设置为 如果在生成第一参考位置信号之后在第二位置信号产生预定次数之前产生第一参考位置信号,则将预定逻辑状态设置为第二参考位置信号,如果没有产生第一参考位置信号,则将第二标志设置为预定的逻辑状态 在产生第一参考位置信号之后并在紧接着产生第二位置信号之前已经产生了第二位置信号之后的预定次数; 以及基于由所述第一和第二标志显示的逻辑状态的预定组合来检测所述第一参考位置信号和所述第二位置信号之一中的异常。

    Ignition timing control method for internal combustion engines
    6.
    发明授权
    Ignition timing control method for internal combustion engines 失效
    内燃机点火正时控制方法

    公开(公告)号:US4747383A

    公开(公告)日:1988-05-31

    申请号:US865524

    申请日:1986-05-21

    IPC分类号: F02P5/15 F02P5/04

    CPC分类号: F02P5/1502 Y02T10/46

    摘要: An ignition timing control method for an internal combustion engine in which an ignition advance angle value conforming to the operating condition of the engine is set, an ignition timing is obtained by applying an angle-time conversion to a crank angle extending from a reference crank angle position to a position corresponding to the ignition advance angle value, and ignition is effected upon lapse of the ignition timing from an instant at which the reference crank angle position is sensed. Engine rotational speed value is sensed at least at two particular crank angle positions, and each sensed rotational speed is stored in memory. A ratio between the at least two rotational speed values stored in an immediately preceding ignition cycle is calculated, and the ignition timing of a present ignition cycle is corrected by using the calculated ratio.

    摘要翻译: 一种用于内燃机的点火正时控制方法,其中设定了符合发动机运行状态的点火提前角值,通过对从参考曲柄角度 位置到与点火提前角值对应的位置,并且在从感测到基准曲柄角位置的时刻经过点火正时之后进行点火。 至少在两个特定的曲柄角位置处感测发动机转速值,并将每个感测的转速存储在存储器中。 计算存储在紧接在前的点火循环中的至少两个转速值之间的比率,并且通过使用所计算的比率来校正当前点火循环的点火正时。

    Ignition timing control method for internal combustion engines at idle
    7.
    发明授权
    Ignition timing control method for internal combustion engines at idle 失效
    内燃机怠速点火正时控制方法

    公开(公告)号:US4696272A

    公开(公告)日:1987-09-29

    申请号:US832246

    申请日:1986-02-21

    IPC分类号: F02P5/15 F02M3/00

    CPC分类号: F02P5/1508 Y02T10/46

    摘要: An ignition timing control method for an internal combustion engine, which controls the ignition timing of a mixture to be supplied to the engine in a feedback manner responsive to the difference between the actual engine speed and the desired idling speed. When it is determined that the engine is in a predetermined idling region and the engine temperature is above a predetermined value, the ignition timing is retarded by a predetermined amount, and the ignition timing thus retarded is corrected by a correction value calculated by multiplying the difference between the actual engine speed and the desired idling speed by a predetermined coefficient, to thereby control the ignition timing to the ignition timing value thus corrected. The ignition timing feedback control is inhibited when the voltage at a predetermined input terminal of a central processing unit is at a predetermined input level.

    摘要翻译: 一种用于内燃机的点火正时控制方法,其根据实际发动机转速和所需怠速之间的差异以反馈方式控制要供应给发动机的混合物的点火正时。 当确定发动机处于预定怠速区域并且发动机温度高于预定值时,点火正时被延迟预定量,并且由此延迟的点火正时通过将差值 在实际发动机转速和期望怠速之间达预定系数,从而将点火正时控制到如此校正的点火正时值。 当中央处理单元的预定输入端处的电压处于预定输入电平时,点火定时反馈控制被禁止。

    Ignition timing control system for internal combustion engines
    8.
    发明授权
    Ignition timing control system for internal combustion engines 失效
    内燃机点火正时控制系统

    公开(公告)号:US4747382A

    公开(公告)日:1988-05-31

    申请号:US865625

    申请日:1986-05-21

    IPC分类号: F02P5/155 F02P5/15 F02P5/04

    CPC分类号: F02P5/1502 Y02T10/46

    摘要: An ignition timing control system for an internal combustion engine comprises magnetic pick-up means for magnetically sensing the angular position of the crankshaft and for generating an output signal indicative thereof, control means for controlling the ignition timing of the engine based on the output signal from the magnetic pick-up means, and correction means for correcting the ignition timing to be controlled by the control means for a delay in the generation of the output signal, which delay increases with a rise in the rotational speed of the engine.

    摘要翻译: 一种用于内燃机的点火正时控制系统包括用于磁感测曲轴的角位置并用于产生指示其的输出信号的磁拾取装置,用于根据来自所述曲轴的输出信号控制发动机的点火正时的控制装置 磁性拾取装置和用于校正由控制装置控制的点火正时的校正装置,用于产生输出信号的延迟,该延迟随着发动机转速的上升而增加。

    Ignition timing control method for internal combustion engines
    9.
    发明授权
    Ignition timing control method for internal combustion engines 失效
    内燃机点火正时控制方法

    公开(公告)号:US4723520A

    公开(公告)日:1988-02-09

    申请号:US865536

    申请日:1986-05-21

    摘要: A desired value of ignition timing and a correction value therefor are calculated at a timing corresponding to a first specific one of sensed predetermined crank angle positions of each cylinder of the engine. Data indicative of the calculated desired value of ignition timing are set in a counter to start counting based upon the set data at a second specific one of the predetermined crank angle positions, subsequent to the first specific one, so that the ignition takes place upon completion of the counting. When it is determined from the calculated desired value of ignition timing whether the ignition is to be effected after a third specific one of the predetermined crank angle positions, subsequent to the second specific one, the data set in the counter is updated to the calculated correction value, at the third specific one of the predetermined crank angle positions.

    摘要翻译: 在对应于发动机的每个气缸的感测的预定曲柄角位置的第一特定一个的时刻计算点火正时的期望值和其校正值。 指示计算出的点火正时期望值的数据被设置在计数器中,基于在第一特定曲柄角位置之后的第二特定一个预定曲柄角位置处的设定数据开始计数,使得点火在完成时发生 的计数。 当根据所计算出的点火时间的期望值确定点火是否在预定的曲柄角位置的第三特定的一个之后进行时,在第二特定的位置之后,将计数器中设置的数据更新为所计算的校正 在第三特定的一个预定的曲柄角位置。

    Ignition timing control method for internal combustion engines
    10.
    发明授权
    Ignition timing control method for internal combustion engines 失效
    内燃机点火正时控制方法

    公开(公告)号:US4696273A

    公开(公告)日:1987-09-29

    申请号:US866462

    申请日:1986-05-22

    摘要: An ignition timing control method for an internal combustion engine wherein a plurality of correction values for ignition timing are stored in memory means beforehand as a function of an output voltage from a variable voltage creating means which is humanly adjustable and the rotational speed of the engine. The output voltage from the variable voltage creating means and the rotational speed of the engine are detected, and one of the correction values is read, which corresponds to the detected output voltage and the detected rotational speed of the engine. Then, the ignition timing is corrected by the use of the read one correction value. Further, a value of a parameter indicative of load on the engine is detected, and the ignition timing control is executed when the detected value of the parameter is above a predetermined value. Alternatively, in place of the correction values, address values are stored in memory means. One of the address values is read, which corresponds to the detected output voltage and converted to a numerical value in the number system with a predetermined number as the base. The figures of the numerical value correspond to respective regions of the engine rotational speed. A correction value for correcting the ignition timing is determined in accordance with one of the figures of the numerical value corresponding to the region of the engine rotational speed in which the engine is detected to be operating.

    摘要翻译: 一种用于内燃机的点火正时控制方法,其中多个点火定时校正值预先作为来自可变电压产生装置的输出电压的函数被存储在存储装置中,该可变电压产生装置是人为可调的和发动机的转速。 检测来自可变电压产生装置的输出电压和发动机的转速,并且读取与检测到的输出电压和检测到的发动机转速相对应的校正值之一。 然后,通过使用读取的一个校正值来校正点火正时。 此外,检测到表示发动机负载的参数的值,并且当检测到的参数值高于预定值时,执行点火正时控制。 或者,代替校正值,地址值被存储在存储器装置中。 读取其中一个地址值,其对应于检测到的输出电压,并以预定数量作为基数转换为数字系统中的数值。 数值的数字对应于发动机转速的各个区域。 根据与检测到发动机正在运转的发动机转速的区域对应的数值的一个图来确定用于校正点火正时的校正值。