Variable stage type carburetor
    43.
    发明授权
    Variable stage type carburetor 失效
    可变级式化油器

    公开(公告)号:US4105720A

    公开(公告)日:1978-08-08

    申请号:US828670

    申请日:1977-08-29

    IPC分类号: F02M7/08 F02M9/10 F02M9/08

    CPC分类号: F02M9/103 F02M7/08 Y10S261/56

    摘要: A variable stage type carburetor having a throttle valve and a movable venturi vane cooperative with the throttle valve. This carburetor further includes a negative pressure responsive device for forcedly shifting the venturi vane in a direction to be closed, irrespective of an opening of the throttle valve, when the negative pressure in the venturi portion is lowered to less than a given value, and an accelerator pump for additionally supplying fuel to an intake passage commensurate to the opening action of the throttle valve. The accelerator pump is effectively operated when the opening of the throttle valve remains at an angle no more than a given degree, while the negative pressure responsive device is effectively operated, when the opening of the throttle valve is at an angle no less than a given degree.

    摘要翻译: 具有与节流阀协作的节流阀和可动文丘里叶片的可变级型化油器。 该化油器还包括负压响应装置,当文丘里管部分的负压降低到小于给定值时,不管节流阀的打开如何,都能将文氏管叶片沿着待关闭的方向强制移动, 加速器泵,用于向与节流阀的打开动作相称的进气通路附加地供给燃料。 当节流阀的开度保持不大于给定的角度时,加速器泵被有效地操作,同时当压力响应装置被有效地操作时,当节流阀的开度处于不小于给定的角度时 度。

    Air-fuel ratio detection system for engine exhaust gas
    45.
    发明授权
    Air-fuel ratio detection system for engine exhaust gas 失效
    发动机废气空燃比检测系统

    公开(公告)号:US4882030A

    公开(公告)日:1989-11-21

    申请号:US239008

    申请日:1988-08-30

    CPC分类号: G01N27/4065

    摘要: An air-fuel detection system comprising a solid electrolyte, first and second electrodes formed on the surface of the solid electrolyte, a diffusion resistor formed on the first electrode for controlling the gas diffusion into the first electrode, and a detector circuit for detecting conditions of the engine exhaust gas to detect the air-fuel ratio thereof, wherein the detector circuit measures the electromotive force generated between the first and second electrodes during a first period, and controls a selected one of the voltage and current applied between the first and second electrodes to keep the electromotive force constant during a second period, the selected one of the voltage and current being produced as a signal representing the air-fuel ratio.

    摘要翻译: 一种空气燃料检测系统,包括固体电解质,形成在固体电解质表面上的第一和第二电极,形成在第一电极上的扩散电阻器,用于控制气体扩散到第一电极中;以及检测器电路, 发动机废气以检测其空燃比,其中所述检测器电路在第一时段期间测量在所述第一和第二电极之间产生的电动势,并且控制施加在所述第一和第二电极之间的电压和电流中的所选择的一个 为了在第二时段期间保持电动势恒定,所选择的一个电压和电流被产生为表示空燃比的信号。

    Method for detecting an air-fuel ratio
    46.
    发明授权
    Method for detecting an air-fuel ratio 失效
    空燃比检测方法

    公开(公告)号:US4629535A

    公开(公告)日:1986-12-16

    申请号:US702750

    申请日:1985-02-19

    摘要: An air-fuel ratio detector including an oxygen ion conductive solid electrolyte, first and second electrodes provided on respective sides of the solid electrolyte, a porous diffusion resistor covering the first electrode, and a circuit arrangement for supplying a current between the first and second electrodes. In order to enable a detection of a wide range of air-fuel ratios, the current supplied between the first and second electrodes is controlled so as to feed oxygen from the second electrode to the first electrode through the solid electrolyte and then withdraw oxygen from the first electrode to the second electrode through the solid electrolyte. At the time of withdrawal of the oxygen, the mobility or migration of the oxygen is measured, with the mobility of the oxygen being detected in dependence upon a variation rate of a withdrawal current, an average value of the withdrawal current, or a time period from the starting time of the withdrawal to a time when the oxygen content near the first electrode has become nearly zero.

    摘要翻译: 一种空燃比检测器,包括氧离子传导性固体电解质,设置在固体电解质的各侧的第一和第二电极,覆盖第一电极的多孔扩散电阻器和用于在第一和第二电极之间提供电流的电路装置 。 为了能够检测大范围的空燃比,控制在第一和第二电极之间供应的电流,以便通过固体电解质从第二电极向第一电极供给氧,然后从 第一电极通过固体电解质到第二电极。 在取出氧气时,测量氧气的迁移率或迁移量,根据取出电流的变化率,取出电流的平均值或时间段来检测氧气的迁移率 从撤回的开始时间到第一电极附近的氧含量变为几乎为零的时间。

    Oxygen concentration control system
    47.
    发明授权
    Oxygen concentration control system 失效
    氧气浓度控制系统

    公开(公告)号:US4622125A

    公开(公告)日:1986-11-11

    申请号:US653550

    申请日:1984-09-24

    IPC分类号: G01N27/406 G01N27/58

    CPC分类号: G01N27/4065

    摘要: An oxygen concentration control system comprising an electrolyte of the oxygen-ionconduction type exposed on its one surface to the interior of a chamber conducting gases under measurement through a diffusion resistance member, and the system controls the oxygen concentration of gases so that the voltage created across the electrolyte is equal to the predetermined voltage. The inventive system comprises a means for preventing the malfunctioning of the control system caused by the time lag in sensing the oxygen concentration which occurs when the oxygen concentration of the gases varies abruptly or the setting of the oxygen concentration is varied.

    摘要翻译: 一种氧浓度控制系统,其包括在其一个表面上暴露于通过扩散阻力构件测量的气体的室内的氧离子传导型电解质,并且该系统控制气体的氧浓度,使得跨越 电解液等于预定电压。 本发明的系统包括用于防止由于气体的氧浓度突然变化或氧气浓度变化而发生的氧气浓度的时间滞后引起的控制系统故障的装置。

    Electronic control apparatus for internal combustion engine
    49.
    发明授权
    Electronic control apparatus for internal combustion engine 失效
    内燃机用电子控制装置

    公开(公告)号:US4425886A

    公开(公告)日:1984-01-17

    申请号:US202693

    申请日:1980-10-31

    摘要: An electronic control apparatus for an internal combustion engine monitors suction air concentration and an engine operation condition, and applies these values to a control circuit to produce output signals to control the air-fuel mixture to be supplied to the engine. The control circuit calculates a desired mass air flow rate based on at least one parameter representing an operating condition of the engine when the throttle valve is fully closed and controls the actual mass air flow rate bring it the desired mass air flow rate.

    摘要翻译: 用于内燃机的电子控制装置监视吸入空气浓度和发动机运转状态,并将这些值施加到控制电路以产生输出信号,以控制供给发动机的空气 - 燃料混合物。 控制电路基于表示发动机的运转状态的至少一个参数,当节流阀完全关闭时,计算所需的质量空气流量,并且控制实际质量空气流量使其具有期望的质量空气流量。

    Fuel feeding apparatus for internal combustion engine
    50.
    发明授权
    Fuel feeding apparatus for internal combustion engine 失效
    内燃机燃油供给装置

    公开(公告)号:US4417558A

    公开(公告)日:1983-11-29

    申请号:US359512

    申请日:1982-03-18

    摘要: A fuel feeding apparatus for an internal combustion engine, in which a thermal type flow sensor is disposed in a bypass air path supplying bypass air from a point upstream of a Venturi portion formed in a main air-intake path to the Venturi portion, and the quantity of air flowing through the bypass air path is controlled by a solenoid unit so that the output signal of the thermal type flow sensor attains coincidence with a pre-set level. A fuel-metering valve actuated by the solenoid unit meters the quantity of fuel meeting a variation of the quantity of intake air being supplied to the engine so as to inject the metered quantity of fuel in a continuous flow into the main air-intake path. An oxygen sensor senses the concentration of oxygen in engine exhaust gases, and, on the basis of the output signal of the oxygen sensor, the value of the pre-set level is modified so that the rate of excess air in engine exhaust gases can be maintained to be .lambda.=1.

    摘要翻译: 一种用于内燃机的燃料供给装置,其中热式流量传感器设置在旁路空气路径中,该旁路空气路径从形成在主进气路径中的文丘里部分的上游点向文氏管部分供应旁路空气, 通过旁通空气路径流动的空气量由螺线管单元控制,使得热式流量传感器的输出信号与预设水平一致。 由螺线管单元致动的燃料计量阀计量满足供应给发动机的进气量变化的燃料量,以将计量的燃料量连续流入主进气路径。 氧传感器检测发动机废气中的氧气浓度,并且基于氧传感器的输出信号,改变预设液位的值,使得发动机废气中的过量空气的速率可以是 保持为λ= 1。