Method of controlling temperature in thermal reactor for engine exhaust
gas and ignition system for performing same
    1.
    发明授权
    Method of controlling temperature in thermal reactor for engine exhaust gas and ignition system for performing same 失效
    控制发动机排气热反应堆温度的方法及其执行点火系统

    公开(公告)号:US4103486A

    公开(公告)日:1978-08-01

    申请号:US673536

    申请日:1976-04-05

    摘要: In a spark-ignited internal combustion engine having a plurality of combustion chambers, at least one combustion chamber is intentionally caused to misfire either periodically or continuously to increase the amount of unburned fuel in the exhaust gas when the temperature in the thermal reactor drops excessively during, e.g., idling of the engine. An ignition system for performing the method has a supplementary ignition primary circuit which is normally disconnected from the ignition coil primary, but causes the secondary voltage either to become zero periodically or to lower when connected with the ignition coil primary. Alternatively, the ignition timing is retarded from a normal timing in a portion of the combustion chambers to raise the exhaust gas temperature. An ignition system for the ignition timing retardation has a supplementary circuit which prevents certain times of the breaks in the primary circuit from producing sparks in the intended combustion chambers and supplies a high voltage pulse to each of these combustion chambers with a predetermined time delay from each of the breaks which are made ineffectual.

    摘要翻译: 在具有多个燃烧室的火花点燃内燃机中,当热反应堆中的温度过度下降时,至少一个燃烧室有意地周期性地或连续地失火以增加废气中的未燃烧燃料的量, ,例如发动机空转。 用于执行该方法的点火系统具有通常与点火线圈一次断开的补充点火一次回路,但是当与点火线圈原件连接时,二次电压也会周期性变为零或降低。 或者,点燃正时从燃烧室的一部分的正常时刻延迟,以提高废气温度。 用于点火正时延迟的点火系统具有辅助电路,其防止初级回路中的某些时间断裂在预期燃烧室中产生火花,并且以每个这些燃烧室的预定时间延迟从这些燃烧室提供高电压脉冲 的休息是无效的。

    Spark-advance control apparatus for internal combustion engine
    3.
    发明授权
    Spark-advance control apparatus for internal combustion engine 失效
    用于内燃机的火花前进控制装置

    公开(公告)号:US4015565A

    公开(公告)日:1977-04-05

    申请号:US586214

    申请日:1975-06-12

    IPC分类号: F02P5/15 F02P1/00

    CPC分类号: F02P5/15 Y02T10/46

    摘要: An apparatus for controlling spark advance in an internal combustion engine of an automotive vehicle, characterized by a circuit arrangement which is operative to detect the angular speed of rotation of the engine output shaft in a digital fashion and produce digital signals responsive to changes in preselected operating conditions such as engine output speed and intake manifold vacuum for controlling the spark advance in accordance with predetermined schedules. The spark advance is thus controlled without being affected by negligible or incidental transient fluctuations in the operating conditions of the engine and the advance characteristics can be readily altered by varying the schedules on which the digital signals are produced.

    摘要翻译: 一种用于控制机动车辆的内燃机中的火花提前的装置,其特征在于一种电路装置,其可操作以数字方式检测发动机输出轴的旋转角速度,并响应于预选的操作的变化产生数字信号 诸如发动机输出速度和进气歧管真空的条件,用于根据预定的时间表来控制火花提前。 因此,火花提前被控制,而不受发动机工作状态的可忽略或偶然的瞬态波动的影响,并且通过改变产生数字信号的时间表可以容易地改变前进特性。

    Secondary air regulating system
    6.
    发明授权
    Secondary air regulating system 失效
    二次调风系统

    公开(公告)号:US3962867A

    公开(公告)日:1976-06-15

    申请号:US483289

    申请日:1974-06-26

    摘要: A sensor such as an oxygen sensor or a carbon monoxide sensor generates an electrical signal responsive to the oxygen or carbon monoxide concentration in exhaust gases discharged from an exhaust purifying device. Under the control of the electrical signal regulating means the amount of secondary air to the exhaust purifying devices is regulated.

    摘要翻译: 诸如氧传感器或一氧化碳传感器的传感器产生响应于从排气净化装置排出的废气中的氧气或一氧化碳浓度的电信号。 在电信号调节装置的控制下,调节排气净化装置的二次空气量。

    System and method for self diagnosing an engine control system
    8.
    发明授权
    System and method for self diagnosing an engine control system 失效
    用于自动诊断发动机控制系统的系统和方法

    公开(公告)号:US5140961A

    公开(公告)日:1992-08-25

    申请号:US639873

    申请日:1991-01-11

    IPC分类号: F02D41/22 F02P17/12

    CPC分类号: F02P17/12 F02D41/221

    摘要: A system and method for self diagnosing an engine controlling system such as an ignition system, fuel injection system, and an EGR (Exhaust Gas Recirculation) system are disclosed in which a periodic pseudo random signal is superposed on a control signal such as an ignition signal, fuel injection signal, or EGR rate controlled value indicating signal during an engine steady state condition, a cross-correlation function is calculated from both the superposed periodic random signal and output signal related to deterioration of the engine controlling system, and a value related to the cross-correlation function is compared with a reference value over which a performance of the engine controlling system cannot be maintained. If the value related to the cross-correlation function exceeds the reference value, the diagnostic system determines the occurrence of deterioration in the engine controlling system. The output related to the deteroration of the engine controlling system is, for example, a number of occurrences of misfiring determined according to change in engine revolutional speed. The periodic pseudo random signal is, for example, an M-series sequence signal. In the case of a diagnostic system for an EGR system the value related to the cross-correlation function may be, for example, a step response.

    摘要翻译: 公开了一种用于自动诊断诸如点火系统,燃料喷射系统和EGR(废气再循环)系统的发动机控制系统的系统和方法,其中周期性伪随机信号叠加在诸如点火信号的控制信号上 ,燃料喷射信号或EGR率控制值指示信号,在发动机稳态条件下,从叠加周期性随机信号和与发动机控制系统的劣化相关的输出信号两者计算互相关函数,以及与 将互相关函数与引擎控制系统的性能不能维持的参考值进行比较。 如果与互相关函数相关的值超过参考值,则诊断系统确定发动机控制系统的劣化的发生。 与发动机控制系统的驱动有关的输出是例如根据发动机转速的变化确定的多次发生的失火。 周期性伪随机信号例如是M序列信号。 在用于EGR系统的诊断系统的情况下,与互相关函数相关的值可以是例如阶跃响应。

    Coarse and fine air supply control for closed-loop controlled carbureted
internal combustion engines
    9.
    发明授权
    Coarse and fine air supply control for closed-loop controlled carbureted internal combustion engines 失效
    用于闭环控制的化油内燃机的粗细和精细的空气供应控制

    公开(公告)号:US4303049A

    公开(公告)日:1981-12-01

    申请号:US55396

    申请日:1979-07-06

    CPC分类号: F02D35/0061 F02M7/24

    摘要: In a closed loop air-fuel mixture control system for carburetor-equipped internal combustion engines, an exhaust gas sensor provides a feedback signal to a control unit where the signal is modified to meet the control characteristics of the closed loop. The modified feedback signal is converted into digital pulses whose width varies with the amplitude of the feedback signal. Additional air is supplied to the engine through an air bleed in accordance with the magnitude of the analog feedback signal to provide a coarse control of air-fuel ratio and in response to the digital pulses to provide a fine control of the ratio. The mixture is controlled in a wide range of ratios to eliminate the need for calibration which would be required for fitting the closed loop system to the time-varying characteristics of individual carburetors.

    摘要翻译: 在用于装载化油器的内燃机的闭环空气燃料混合物控制系统中,排气传感器向控制单元提供反馈信号,其中信号被修改以满足闭环的控制特性。 修改的反馈信号被转换成数字脉冲,其宽度随着反馈信号的幅度而变化。 额外的空气根据模拟反馈信号的大小通过排气被提供给发动机,以提供空燃比的粗略控制,并且响应于数字脉冲以提供比率的精确控制。 将混合物控制在较宽的比例范围内,以消除将闭环系统安装到单个化油器的时变特性所需的校准。

    Closed loop fuel control in accordance with sensed engine operational
condition
    10.
    发明授权
    Closed loop fuel control in accordance with sensed engine operational condition 失效
    根据感测到的发动机运行状况,闭环燃料控制

    公开(公告)号:US4173956A

    公开(公告)日:1979-11-13

    申请号:US852352

    申请日:1977-11-17

    CPC分类号: F02D35/0061

    摘要: An engine operational condition detector detects a mode among several modes, such as an idling state, a steady state and an accelerating state, where a signal is utilized for selectively actuating one of several integrators, each of which has a predetermined time-constant. One of the integrators, when actuated, integrates an output signal of a P-I controller of a closed loop fuel control system, the integrated signal being stored in a capacitor connected across the integrator. Electromagnetic valves disposed in the openings of main air-bleeds of main and slow circuits of a carburetor are energized in accordance with the output signal of each integrator while other electromagnetic valves disposed in the openings of auxiliary air-bleeds of the same are energized in dependence on the output signal of the P-I controller.

    摘要翻译: 发动机操作条件检测器检测诸如怠速状态,稳态和加速状态的几种模式中的模式,其中使用信号来选择性地致动多个积分器中的一个,其中每一个具有预定的时间常数。 其中一个积分器在被驱动时,集成了闭环燃料控制系统的P-I控制器的输出信号,该积分信号被存储在跨越积分器的电容器中。 设置在化油器的主要和慢速回路的主要空气出口的开口中的电磁阀根据每个积分器的输出信号被激励,而其中设置在辅助空气出口的开口中的其他电磁阀依次通电 对PI控制器的输出信号。