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    • 1. 发明授权
    • Method of controlling the air-fuel ratio in an internal combustion engine
    • 控制内燃机的空燃比的方法
    • US4492205A
    • 1985-01-08
    • US434181
    • 1982-10-14
    • Werner JundtRolf Reischl
    • Werner JundtRolf Reischl
    • F02D41/14F02D45/00F02M51/00
    • F02D41/1479F02D41/148
    • To prevent stumbling operation of an internal combustion (IC) engine (E) during warm-up due to switching back-and-forth between control of the air-fuel composition of the mixture being applied to the engine based on a preset, rich mixture and controlled by a lambda sensor, the lambda sensor internal resistance is sensed and, when the internal resistance of the lambda sensor, when exposed to a rich mixture, is substantially less than when exposed to a fuel-lean mixture, an indication is thereby provided that the sensor has reached proper operating temperatures - see FIG. 3 - is capable of providing output voltages within the evaluation range of two threshold circuits (9, 10) which receive reference values from a voltage divider (6, 7, 8) and of resuming control based on the output voltages of the sensor. The minimum operating temperatures of the sensor are asymmetrical, with respect to lean or rich air-fuel mixtures being applied to the engine, to permit either uninterrupted control of the engine in accordance with a preset air-fuel mixture during warm-up or only by the sensor, after it has reached its operating temperature, thereby preventing back-and-forth switching between control based on the preset conditions and on output signals from the sensor.
    • 为了防止在预热期间内燃(IC)发动机(E)因在施加到发动机上的混合气的空燃组合物的控制之间来回切换而基于预设的富混合物 并且由λ传感器控制,感测到λ传感器内部电阻,并且当暴露于富混合物时,当λ传感器的内阻基本上小于暴露于贫燃料混合物时的内阻,从而提供指示 传感器已达到适当的工作温度 - 见图。 3 - 能够在接收来自分压器(6,7,8)的参考值的两个阈值电路(9,10)的评估范围内提供输出电压,并且基于传感器的输出电压恢复控制。 传感器的最低工作温度相对于向发动机施加的稀薄或浓缩的空气 - 燃料混合物是不对称的,以允许在预热期间根据预设的空气 - 燃料混合物或仅通过 传感器在其达到其工作温度之后,从而防止基于预设条件的控制和来自传感器的输出信号之间的前后切换。
    • 2. 发明授权
    • Method and apparatus for controlling the air-fuel ratio of the operating
mixture of an internal combustion engine
    • 用于控制内燃机的操作混合物的空燃比的方法和装置
    • US4528957A
    • 1985-07-16
    • US610108
    • 1984-05-14
    • Werner JundtRolf Reischl
    • Werner JundtRolf Reischl
    • F02D41/14F02M7/00
    • F02D41/148
    • The invention is directed to a method and an apparatus for controlling the air-fuel ratio of the operating mixture supplied to an internal combustion engine. The apparatus includes an oxygen sensor that is responsive to the oxygen content of the burnt operating mixture. The operating state of the sensor is detected by superposing a constant reference quantity on the oxygen sensor output quantity. The resultant of these quantities is fed to at least two comparators having different thresholds. The comparator outputs are processed to detect the operational readiness of the sensor. In this arrangement, the air-fuel ratio of the operating mixture is adjustable in dependence on the output quantity of the comparator to which the higher threshold is applied. This upper threshold and the special course of the Lambda sensor output voltage coact to compensate for the lean shift of the Lambda control during the warm-up phase of the internal combustion engine. In addition, this method largely avoids the transient response behavior of the control apparatus referred to as "idle hunting" without necessitating additional circuit configurations. The use of the higher one of the two thresholds as the control threshold results in a significant improvement of the behavior of the internal combustion engine during the warm-up phase.
    • 本发明涉及一种用于控制供给内燃机的操作混合物的空燃比的方法和装置。 该装置包括氧气传感器,其响应于燃烧的操作混合物的氧含量。 通过将氧传感器输出量上的恒定参考量叠加来检测传感器的工作状态。 这些量的结果被馈送到具有不同阈值的至少两个比较器。 处理比较器输出以检测传感器的运行准备状态。 在这种布置中,操作混合物的空燃比根据施加较高阈值的比较器的输出量而可调。 该上阈值和Lambda传感器输出电压的特殊过程共同作用以补偿在内燃机的预热阶段期间Lambda控制的偏移。 此外,该方法大大地避免了称为“空闲狩猎”的控制装置的瞬态响应行为,而不需要额外的电路配置。 使用两个阈值中较高的一个作为控制阈值导致在预热阶段期间内燃机的行为的显着改善。
    • 5. 发明授权
    • Low-speed compensated ignition system for an internal combustion engine
    • 内燃机低速补偿点火系统
    • US4356808A
    • 1982-11-02
    • US317284
    • 1981-11-02
    • Bernd BodigWerner Jundt
    • Bernd BodigWerner Jundt
    • F02P3/05F02P3/045F02P5/04F02P1/00
    • F02P3/0453
    • A switching transistor (7, 9) is serially connected with the primary (5) of an ignition coil; current flow therethrough is controlled from an a-c signal generator (16) with respect to an ON threshold level (Ue) to store electromagnetic energy, and an OFF threshold level (Ua) to generate a spark; a variable conductivity circuit (26) controlled from a sensing resistor (8) modifies the response level of the threshold switch (13) with respect to the null or cross-over level of the applied signal. To prevent excessive current flow under idle-speed conditions, in accordance with the invention, the ON threshold level, at least, of the switch is shifted by introducing an auxiliary bias voltage derived from an auxiliary capacitor (36) and connected (37, 38) by the signal source through a diode (38) which prevents application of an auxiliary bias voltage to the threshold switch (13) under extremely low, e.g. starting conditions, permits application of the additional bias voltage providing for shift of the ON response level (Ue) under idling conditions, but again loses control as the speed continues to increase, and control by the variable conductivity circuit takes over.
    • 开关晶体管(7,9)与点火线圈的初级(5)串联连接; 从a-c信号发生器(16)相对于ON阈值电平(Ue)控制电流流动以存储电磁能量和OFF阈值电平(Ua)以产生火花; 从感测电阻器(8)控制的可变电导率电路(26)相对于所施加的信号的零值或交叉电平来修改阈值开关(13)的响应电平。 为了防止在怠速条件下的过大电流,根据本发明,至少开关的导通阈值电平通过引入从辅助电容器(36)导出并连接的辅助偏置电压(37,38 )由信号源通过二极管(38),二极管(38)防止在非常低的范围内向阈值开关(13)施加辅助偏置电压,例如 启动条件允许施加额外的偏置电压,提供空载条件下的ON响应电平(Ue)的移动,但随着速度持续增加而再次失去控制,并且可变电导率电路的控制接管。
    • 6. 发明授权
    • Ignition system for internal combustion engines
    • 内燃机点火系统
    • US4328782A
    • 1982-05-11
    • US56963
    • 1979-07-12
    • Werner JundtHerman Roozenbeek
    • Werner JundtHerman Roozenbeek
    • F02P3/04F02P3/045F02P3/08
    • F02P3/0861
    • In order to reduce the amount of ignition energy supplied to an ignition coil during low speed operation of the engine, an electronic circuit is provided to regulate the open time of the ignition circuit to be constant in an upper engine speed domain and to then obey a predetermined characteristic in the mid-range. The mid-range control is gradually made ineffective at lower engine speeds where the open ignition interval is determined by speed as measured by the duty cycle of the engine ignition transducer. The change of characteristics is obtained with the aid of a control voltage source which generates a speed dependent control voltage causing the discharge time of a capacitor to be extended at low engine speeds and causing the termination of the open time of the ignition to be determined by the transducer output signal.
    • 为了减少在发动机的低速运转期间供给点火线圈的点火能量的量,设置电子电路以将点火电路的打开时间调节为在上部发动机转速域中恒定,然后服从 预定特性在中档。 在较低的发动机转速下,中距离控制逐渐变得无效,其中,通过发动机点火传感器的占空比测量,开启点火间隔由速度决定。 特性变化是借助控制电压源得到的,该控制电压源产生速度相关的控制电压,导致电容器的放电时间在低发动机转速下延长并且导致点火的打开时间的终止由 换能器输出信号。
    • 7. 发明授权
    • Ignition system for internal combustion engine
    • 内燃机点火系统
    • US4204508A
    • 1980-05-27
    • US868869
    • 1978-01-12
    • Werner JundtBernd BodigHerman RoozenbeekPeter Werner
    • Werner JundtBernd BodigHerman RoozenbeekPeter Werner
    • F02P3/04F02P3/045F02P3/05F02P3/00
    • F02P3/0453
    • A transistor switch connected in series with the primary winding of the ignition coil permits and blocks current flow through the coil when in a conductive and non-conductive state respectively. Normally, the switch is "on" and "off" respectively in the presence and absence of an ignition current pulse furnished in synchronism with the rotation of the crankshaft of the engine. For increasing speeds, the time the switch is "on" prior to the ignition time is increased by switching it to the conductive state when the charge on a control capacitor reaches a predetermined charge. The charge on the control capacitor is changed in a first direction following receipt of each ignition signal. The rate of change of charge depends upon the resistance of the emitter-collector circuit of a first control transistor. The latter is, in turn, determined by the charge on an integrator capacitor which varies with changes in engine speed. When the charge on the control capacitor reaches a predetermined charge, the output transistor switch to the conductive state allowing current flow in the ignition coil.
    • 与点火线圈的初级绕组串联连接的晶体管开关分别在导通状态和非导通状态时允许并阻止电流通过线圈。 通常,在存在和不存在与发动机的曲轴的旋转同步的点火电流脉冲的情况下,开关分别为“开”和“关”。 为了提高速度,在点火时间之前开关“接通”的时间通过在控制电容器上的电荷达到预定电荷时将其切换到导通状态来增加。 在接收到每个点火信号之后,控制电容器上的电荷在第一方向上改变。 电荷变化率取决于第一控制晶体管的发射极 - 集电极电路的电阻。 后者又由积分器电容器的电荷决定,该电容随着发动机转速的变化而变化。 当控制电容器上的电荷达到预定电荷时,输出晶体管切换到允许电流在点火线圈中流动的导通状态。
    • 9. 发明授权
    • Circuit for decreasing oscillatoins in the primary winding of an
ignition coil of an internal combustion engine
    • 用于减少内燃机的点火线圈的初级绕组中的振荡的电路
    • US4382431A
    • 1983-05-10
    • US229122
    • 1981-01-28
    • Bernd BodigWerner Jundt
    • Bernd BodigWerner Jundt
    • F02P3/04F02P3/045F02P3/05
    • F02P3/051
    • Oscillations which would normally occur when the current in the primary winding of an ignition coil is limited to a predetermined value prior to ignition are suppressed by use of a feedback resistor. Specifically, the basic circuit consists of the primary winding of the ignition coil connected in series with a Darlington transistor configuration which, in turn, is connected in series with a measuring resistor, at a common point. The input of the current control system is connected to the common point through an additional resistor, while the output of the control circuit is connected to the input base of the Darlington configuration. Oscillations which might otherwise occur are suppressed by the use of a feedback resistor connected between the input and output lines of the control circuit.
    • 通过使用反馈电阻抑制点火线圈的初级绕组中的电流被限制在点火前的预定值时通常发生的振荡。 具体地,基本电路由点火线圈的初级绕组组成,该点火线圈与达林顿晶体管配置串联,该Darlington晶体管配置又与公共点与测量电阻器串联连接。 当前控制系统的输入通过附加电阻连接到公共点,而控制电路的输出连接到达林顿配置的输入基。 否则可能发生的振荡通过使用连接在控制电路的输入和输出线之间的反馈电阻来抑制。