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    • 5. 发明授权
    • Vehicular exhaust resonance suppression system and sensing means
therefore
    • 因此,车辆排气共振抑制系统和感测装置
    • US5189266A
    • 1993-02-23
    • US531225
    • 1990-05-31
    • Akira SasakiYoshikazu HayakawaYuichi SakumaTatsuo SakaiYoshinori Kihara
    • Akira SasakiYoshikazu HayakawaYuichi SakumaTatsuo SakaiYoshinori Kihara
    • F01N1/16F01N11/00
    • F01N1/165F01N1/16F01N11/00F01N11/002Y02T10/47
    • A resonance detection device is provided for detecting resonance in an exhaust passage of an automotive vehicle. The detection device employs a temperature sensor in combination with an arrangement which enables the sensor to be exposed to a flow of exhaust gas the temperature of which is different from the temperature of the bulk of the flow, when resonance occurs. In given embodiments the arrangement takes the form different diameter conduits and/or vessels, while others it takes the form of a heat exchange device which either heats or cools the gases, and which is disposed proximate the temperature sensor. When no resonance occurs in the passage, the output of the temperature sensor remains stable. When resonance occurs the fluid flow characteristics in the passage change in a manner wherein the gas which has been either heated or cooled by the heat exchange device is induced to flow against the temperature sensor. The sensed temperature change can be used to control a valve via which the resonance characteristics of the passage are modified and via which resonance is attenuated.
    • 提供一种谐振检测装置,用于检测机动车辆的排气通路中的共振。 检测装置采用温度传感器与能够使传感器暴露于当发生共振时其温度不同于流体体积的温度的排气流的布置的结构。 在给定的实施例中,该装置采用不同直径的导管和/或容器的形式,而另一些则采用热交换装置的形式,其可以加热或冷却气体,并且设置在温度传感器附近。 当通道中没有发生共振时,温度传感器的输出保持稳定。 当共振发生时,通道中的流体流动特性以其中被热交换装置加热或冷却的气体被诱导相对于温度传感器流动的方式改变。 感测到的温度变化可以用于控制通道的谐振特性经过该阀的修正并且共振被衰减。