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1.
公开(公告)号:US4364260A
公开(公告)日:1982-12-21
申请号:US243882
申请日:1981-03-16
IPC分类号: G01L23/22
CPC分类号: G01L23/225
摘要: A spark ignited internal combustion engine includes knock sensing apparatus comprising vibration sensing apparatus having a portion mounted on an engine component for vibration therewith and a tuned response to vibrations of a plurality of the acoustic cavity resonance frequencies of the engine cylinders. A separate signal processing channel is provided for the sensor output at each of the frequencies to indicate significant vibrations at the respective frequency. Coincidence means fed by all channels produce an engine knock signal only when significant vibrations are detected on all channels simultaneously.
摘要翻译: 火花点火内燃机包括爆震感测装置,其包括具有安装在发动机部件上用于振动的部分的振动感测装置以及对发动机气缸的多个声腔谐振频率的振动的调谐响应。 为每个频率处的传感器输出提供单独的信号处理通道,以指示相应频率处的显着振动。 只有当所有通道同时检测到显着的振动时,由所有通道馈送的一致意味着产生发动机爆震信号。
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2.
公开(公告)号:US4164867A
公开(公告)日:1979-08-21
申请号:US937066
申请日:1978-08-28
摘要: The bulk temperature of the gas in a piston engine during combustion is determined by detecting the high frequency pressure oscillation in the combustion chamber operating the engine to produce knock and measuring the frequency of the lowest frequency mode of the high frequency knock signal. The frequency or inversely the period of that signal is a function of the gas temperature.
摘要翻译: 通过检测在操作发动机的燃烧室中的高频压力振荡来产生爆震并测量高频爆震信号的最低频率模式的频率,来确定燃烧期间活塞式发动机中的气体的体积温度。 该信号的频率或相反的周期是气体温度的函数。
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