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    • 33. 发明授权
    • Spark plug voltage probe device for detecting a burning condition and
reducing noise level in an internal combustion engine
    • 用于检测燃烧状态并降低内燃机噪声水平的火花塞电压探头装置
    • US5426370A
    • 1995-06-20
    • US982822
    • 1992-11-30
    • Shigeru MiyataYoshitaka YamadaHideji YoshidaYoshihiro MatsubaraYasuo Ito
    • Shigeru MiyataYoshitaka YamadaHideji YoshidaYoshihiro MatsubaraYasuo Ito
    • F02P17/00F02P17/12G01R15/16G01R31/00G01R1/06G01R15/00G01R19/165
    • G01R15/16F02P17/12G01R31/007F02P2017/006F02P2017/123
    • In a spark plug voltage probe device, an electrically shield casing (301) is provided in which electrical circuit boards (302) are accommodated, the shield casing (301) having an electrically conductive wall (313) connected to the ground. An insulator base (303) is securely attached to an outer bottom of the electrical shield casing (301) and has an electrode plate (332) embedded in the insulator base to be connected to the electrical circuit boards (302). A rubber plate (342) is securely attached to a lower surface of the insulator base (303). A plurality of grooves (333, 341) are provided between the insulator base (303) and the rubber plate (342) to locate the corresponding cables (305) in the grooves (333,341) so as to form a static capacity (C1) between the electrode plate (332) and the cables (305). This makes it possible to reduce a noise level by the ratio of the static capacity (C1) to a static capacity (C2) between the electrically conductive wall (313) and the electrode plate (332). An electrical shield sheet (343) is fixedly attached to the lower surface of the rubber plate (342).
    • 在火花塞电压探针装置中,设置有电屏蔽壳体(301),其中容纳电路板(302),所述屏蔽壳体(301)具有连接到地面的导电壁(313)。 绝缘体基座(303)牢固地附接到电气屏蔽壳体(301)的外部底部,并且具有嵌入到绝缘体基座中以连接到电路板(302)的电极板(332)。 橡胶板(342)牢固地附接到绝缘体基座(303)的下表面。 多个凹槽(333,341)设置在绝缘体基座(303)和橡胶板(342)之间,以将相应的电缆(305)定位在凹槽(333,341)中,以便形成静电容量(C1) 电极板(332)和电缆(305)。 这使得可以通过静电容量(C1)与导电壁(313)和电极板(332)之间的静态容量(C2)的比来降低噪声水平。 电屏蔽片(343)固定在橡胶板(342)的下表面上。
    • 35. 发明授权
    • Burning condition detecting device and burning control device in an
internal combustion engine
    • 内燃机燃烧状态检测装置及燃烧控制装置
    • US5253627A
    • 1993-10-19
    • US988842
    • 1992-12-10
    • Shigeru MiyataHideji YoshidaYoshihiro MatsubaraYasuo Ito
    • Shigeru MiyataHideji YoshidaYoshihiro MatsubaraYasuo Ito
    • F02D35/02F02D41/14F02P17/00F02P17/12F02D41/04
    • F02P17/12F02D35/021F02P2017/006F02P2017/123F02P2017/125
    • In a burning condition detecting device in an internal combustion engine in which a high voltage is applied to a spark plug by way of a diode and a series gap of a distributor. A voltage charger circuit is provided to on-off actuates the primary coil to induce a charging voltage in the secondary circuit either during establishing the spark discharge or during a predetermined period of time immediately after an end of the spark discharge. The charging voltage is applied to the spark plug to electrically charge a stray capacity inherent in the spark plug so as to form a sparkplug voltage. A voltage divider circuit is provided to divide the sparkplug voltage in accordance with a high impedance element and a low impedance element. A voltage level detecting circuit is provided to detect a sparkplug voltage waveform divided by the voltage divider circuit. A distinction circuit detects a degree of variation of an attenuation time period of the spark plug voltage waveform so as to determine a variation of an air-fuel ratio of an air-fuel mixture gas injected into a cylinder of the internal combustion engine by a fuel injector.
    • 在内燃机中的燃烧条件检测装置中,其中通过二极管将高电压施加到火花塞和分配器的串联间隙。 提供一个电压充电器电路来启动初级线圈,以在建立火花放电期间或在火花放电结束之后的预定时间段期间引起次级电路中的充电电压。 将充电电压施加到火花塞以对火花塞固有的杂散电容进行充电,以形成火花塞电压。 提供分压器电路以根据高阻抗元件和低阻抗元件来划分火花塞电压。 提供电压电平检测电路以检测由分压电路划分的火花塞电压波形。 区别电路检测火花塞电压波形的衰减时间周期的变化程度,以便确定通过燃料喷射到内燃机的汽缸内的空气燃料混合气体的空燃比的变化 注射器。