Knocking detection system for internal combustion engine
    2.
    发明授权
    Knocking detection system for internal combustion engine 失效
    内燃机爆震检测系统

    公开(公告)号:US4233836A

    公开(公告)日:1980-11-18

    申请号:US33347

    申请日:1979-04-26

    摘要: A system for detecting the intensity of knocking of an internal combustion engine such as an automotive gasoline engine, comprising a vibration sensing device attached to an engine body and electrical circuitry for producing a knock-indicating signal based on a comparison of a vibration-indicating signal derived from the vibration sensing device with a reference signal which is variable depending on the rate of engine revolution. The vibration sensing device comprises a vibration pickup such as of an accelerometer type, preferably mounted on a resonance plate which is fixed only at its one end to the engine body, and is made to have a resonance frequency within a frequency band of vibrations attributable to knocking of the engine, such as 5 to 10 KHz, so that no band-pass filter is needed in this system.

    摘要翻译: 一种用于检测诸如汽车发动机的内燃机的爆震强度的系统,包括附接到发动机主体的振动感测装置和用于产生爆震指示信号的电路,其基于振动指示信号 来自振动检测装置,具有可根据发动机转速而变化的参考信号。 振动检测装置包括振动拾取器,例如加速度计型,优选地安装在仅在其一端固定到发动机主体的共振板上,并且使其具有在归因于 发动机的爆震,例如5到10KHz,使得在该系统中不需要带通滤波器。

    Secondary air supply system
    3.
    发明授权
    Secondary air supply system 失效
    二次供气系统

    公开(公告)号:US4441468A

    公开(公告)日:1984-04-10

    申请号:US298623

    申请日:1981-09-02

    摘要: A reed type valve is operatively secured on the outer surface of the casing of an engine air filter assembly to supply the exhaust system of an engine with secondary air. The reed valve is fluidly connected to an air induction passage formed inside the casing of the air filter assembly. A resonance chamber is also formed inside of the casing and communicates through a communication passage with the air induction passage so as to attenuate a relatively low frequency component of exhaust noise transmitted through the reed valve. The air induction passage, resonance chamber and communication passage are formed as follows: ##EQU1## where, S.sub.o (cm.sup.2)=the cross-sectional area of the air induction passageS(cm.sup.2)=the cross-sectional area of the communication passagel(cm)=the length of the communication passageV(cm.sup.3)=the volume of the resonance chamberM=the number of the engine cylinders of the engine.

    摘要翻译: 簧片式阀可操作地固定在发动机空气过滤器组件的壳体的外表面上,以向发动机的排气系统供应二次空气。 簧片阀流体地连接到形成在空气过滤器组件的壳体内部的空气引导通道。 谐振腔也形成在壳体的内部,并且通过连通通道与空气导入通道连通,以便衰减通过簧片阀传输的排气噪声的相对较低的频率分量。 空气进入通道,共振室和连通通道形成如下:其中,(cm2)=空气吸入通道S(cm2)的横截面面积=横截面积 连通通道l(cm)=连通通道的长度V(cm3)=共振室的体积M =发动机气缸的数量。

    Secondary air supply system
    4.
    发明授权
    Secondary air supply system 失效
    二次供气系统

    公开(公告)号:US4319549A

    公开(公告)日:1982-03-16

    申请号:US46310

    申请日:1979-06-07

    摘要: A reed type valve is operatively secured on the outer surface of the casing of an engine air filter assembly to supply the exhaust system of an engine with secondary air. The reed valve is fluidly connected to an air induction passage formed interior of the casing of the air filter assembly. A resonance chamber is also formed interior of the casing and communicated through a communication passage with the air induction passage so as to attenuate a relatively low frequency component of exhaust noise transmitted through the reed valve. The air induction passage, resonance chamber and communication passage are formed as follows: ##EQU1## where, S.sub.o (cm.sup.2)=the cross-sectional area of the air induction passageS(cm.sup.2)=the cross-sectional area of the communication passagel(cm)=the length of the communication passageV(cm.sup.3)=the volume of the resonance chamberM=the number of the engine cylinders of the engine.

    摘要翻译: 簧片式阀可操作地固定在发动机空气过滤器组件的壳体的外表面上,以向发动机的排气系统供应二次空气。 簧片阀流体地连接到形成在空气过滤器组件的壳体内部的空气感应通道。 谐振室也形成在壳体的内部,并且通过与空气感应通道的连通通道连通,以便衰减通过簧片阀传输的排气噪声的相对较低的频率分量。 空气进入通道,共振室和连通通道形成如下:其中,(cm2)=空气吸入通道S(cm2)的横截面面积=横截面积 连通通道l(cm)=连通通道的长度V(cm3)=共振室的体积M =发动机气缸的数量。

    Ignition timing control system for an internal combustion engine
    5.
    发明授权
    Ignition timing control system for an internal combustion engine 失效
    内燃机点火正时控制系统

    公开(公告)号:US4282841A

    公开(公告)日:1981-08-11

    申请号:US34286

    申请日:1979-04-30

    IPC分类号: F02P5/152 F02P5/04

    CPC分类号: F02P5/1522 Y02T10/46

    摘要: An ignition timing control system for an internal combustion engine comprises first circuitry for producing a function of the intensity of combustion knock in each cylinder in a sequence, second circuitry for storing the function of each cylinder respectively in a memory circuit each of which corresponds to a specific cylinder, and third circuitry for determining the ignition timing of each cylinder by modifying the basic ignition timing determined by an advance mechanism, in accordance with the respectively stored functions.

    摘要翻译: 一种用于内燃机的点火正时控制系统包括用于产生每个气缸中的燃烧爆震强度的功能的第一电路,用于将每个气缸的功能分别存储在存储器电路中的每个气缸中的每一个对应于 以及第三电路,用于根据分别存储的功能,通过修改由提前机构确定的基本点火正时来确定每个气缸的点火正时。