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    • 121. 发明授权
    • Method for cylinder-selective knock control in internal combustion
engines
    • 内燃机气缸选择性爆震控制方法
    • US5386367A
    • 1995-01-31
    • US706248
    • 1991-05-28
    • Herbert ZieglerPeter Schindler
    • Herbert ZieglerPeter Schindler
    • F02D41/36F02D45/00F02P5/152G01L23/22G01M15/00F02P5/14
    • F02P5/1522G01L23/225Y02T10/46
    • The method includes sampling a sensor signal of at least one knocking sensor after amplification and preparation at a predetermined frequency within a measurement window being predetermined for each firing cycle, to form sampled values. A knocking value is determined from a mean value of a predetermined number of greatest sampled values. A noise value is ascertained by forming a sliding mean value from a predetermined number of previous knocking values. An actual noise value is formed from the cylinder-selective noise values. A command noise value being dependent on at least one noise-determining engine parameter is read out of a performance graph. A difference between or a ratio of the actual noise value and the command noise value is formed. The comparison is processed in a controller to produce a correction factor. The correction factor is linked with a pilot value being read out of a pilot performance graph and being dependent on at least one noise-determining engine parameter, to produce a total amplification factor for the sensor signal.
    • 该方法包括在对于每个点火周期预定的测量窗口内的预定频率进行放大和准备之后对至少一个爆震传感器的传感器信号进行采样,以形成采样值。 从预定数量的最大采样值的平均值确定敲击值。 通过从预定数量的先前敲击值形成滑动平均值来确定噪声值。 实际噪声值由气缸选择噪声值形成。 从性能图中读出依赖于至少一个噪声确定引擎参数的命令噪声值。 形成实际噪声值与指令噪音值之间的差值或比率。 在控制器中处理比较以产生校正因子。 校正因子与从导频性能图读出的导频值相关联,并且依赖于至少一个噪声确定引擎参数,以产生传感器信号的总放大系数。
    • 122. 发明授权
    • Detonation detection system for internal combustion engines
    • 内燃机爆震检测系统
    • US5373726A
    • 1994-12-20
    • US853911
    • 1992-03-19
    • Barry T. BrinksHoward F. Farquhar
    • Barry T. BrinksHoward F. Farquhar
    • G01L23/22
    • G01L23/225G01L23/221
    • A detonation detector operable for detecting the intensity of detonation occurring in a combustion chamber of an internal combustion engine. The detonation detector of the present invention includes a mechanical filter mounted on the engine for amplifying vibration signals resulting from detonation, including low intensity, sub-audible detonation signals. The mechanical filter is tuned to a resonant frequency at about the detonation frequency signal in order to attenuate noise signals from the engine and amplify signals at about the detonation frequency signal. A flat response accelerometer is mounted on the mechanical filter and receives the amplified detonation frequency signals and the attenuated noise signals and converts these signals into electrical output signals. An electronic circuit is connected to the accelerometer for amplifying the electrical output signals and filtering the attenuated noise signals. Thus, the detonation detector provides an output indicative of the intensity level of detonation substantially devoid of noise signals.
    • 一种用于检测在内燃机的燃烧室中发生的爆震强度的爆震检测器。 本发明的爆震检测器包括安装在发动机上的机械滤波器,用于放大由爆震引起的振动信号,包括低强度的亚声音爆震信号。 机械滤波器在大约爆震频率信号下调谐到谐振频率,以便衰减来自发动机的噪声信号,并在大约爆震频率信号处放大信号。 平面响应加速度计安装在机械滤波器上,并接收放大的引爆频率信号和衰减的噪声信号,并将这些信号转换成电气输出信号。 电子电路连接到加速度计,用于放大电输出信号并对衰减的噪声信号进行滤波。 因此,引爆检测器提供指示基本上没有噪声信号的爆震的强度水平的输出。
    • 124. 发明授权
    • Knock control system for internal combustion engine
    • 内燃机爆震控制系统
    • US5355853A
    • 1994-10-18
    • US31245
    • 1993-03-11
    • Hirohiko YamadaKoji Sakakibara
    • Hirohiko YamadaKoji Sakakibara
    • F02D45/00G01L23/22F02P5/14
    • G01L23/225
    • A knock control system for an internal combustion engine derives a knock intensity indicative value Vpi from an output of a knock sensor and decides presence or absence of an engine knock by comparing the knock intensity indicative value Vpi and a knock decision level V.sub.KDi for controlling a knock control factor such as an ignition timing based on the decision. The system derives a value Si corresponding to a standard deviation of a distribution of a substantially logarithmic conversion value of the knock intensity indicative value Vpi, and a value V.sub.Mi corresponding to a median value of the above-noted distribution. The system derives the knock decision level V.sub.KDi based on the value Si and the value V.sub.Mi when the value Si is within a predetermined range. On the other hand, when the value Si deviates from the predetermined range, the system derives the knock decision level V.sub.KDi based on the value V.sub.Mi and a corrected value which is set smaller or larger than the value Si so as to prevent divergence of the knock decision level V.sub.KDi.
    • 用于内燃机的爆震控制系统从爆震传感器的输出导出爆震强度指示值Vpi,并且通过比较爆震强度指示值Vpi和敲击判定水平VKDi来控制爆震,并决定是否存在发动机爆震 控制因素如基于点火时间的决定。 该系统导出对应于爆震强度指示值Vpi的基本对数转换值的分布的标准偏差的值Si和与上述分布的中值对应的值VMi。 当值Si在预定范围内时,该系统基于值Si和值VMi导出爆震判定电平VKDi。 另一方面,当值Si偏离预定范围时,系统基于值VMi和设置为小于或大于值Si的校正值导出爆震判定电平VKDi,以便防止爆震的发散 决策级别VKDi。
    • 125. 发明授权
    • Pressure sensor
    • 压力传感器
    • US5353643A
    • 1994-10-11
    • US990799
    • 1992-12-15
    • Josef Glaser
    • Josef Glaser
    • G01L9/00G01L9/04G01L9/08G01L9/12G01L19/04G01L23/22
    • G01L9/0001G01L19/04G01L23/22G01L9/0002G01L9/0005
    • To compensate for temperature effects on the measuring signal of a pressure sensor which includes a membrane part with at least indirect signal generation and is a supporting base, the membrane part being deformed by the pressure to be measured and cooperable with a pressure sensing element, the the membrane part is constructed to include at least one pair of concentric cylindrical surfaces positioned at a small radial distance from each other. The cylindrical surfaces are closed along their circumference, and one of the cylindrical surfaces increases its diameter when subjected to pressure and the diameter of the other decreases. Changes of the two diameters in the same direction take place in the instance of a temperature change.
    • 为了补偿温度对包括具有至少间接信号产生的膜部分的压力传感器的测量信号的温度影响,并且是支撑基座,膜部分被测量的压力变形并与压力感测元件配合, 膜部分构造成包括彼此相距小的径向距离的至少一对同心圆柱形表面。 圆柱形表面沿其圆周封闭,其中一个圆柱形表面在经受压力时增加其直径,另一个圆柱形表面的直径减小。 在相同方向上的两个直径的变化在温度变化的情况下发生。
    • 127. 发明授权
    • Circuit arrangement to detect knocking
    • 电路布置检测爆震
    • US5333489A
    • 1994-08-02
    • US768895
    • 1991-10-18
    • Adolf Dreyer
    • Adolf Dreyer
    • G01L23/22
    • G01L23/225
    • The circuit arrangement for detecting and evaluating knocking in an internal combustion engine includes a knock sensor located in the internal combustion engine to generate a knock sensor signal having knock signal frequency components of differing knock signal frequencies; an oscillator producing a constant frequency oscillator signal; a mixer stage producing a mixed signal including mixed signal frequency components of various mixed signal frequencies which are less than the corresponding knock signal frequencies of the knock sensor signal, the mixer stage being connected to receive the constant frequency oscillator signal and the knock sensor signal; a level stabilizing circuit for adjusting an amplitude of the knock sensor signal to a constant amplitude level despite changes in an operating state of the internal combustion engine, the level stabilizing circuit connecting the knock sensor and the mixer stage; a filter circuit connected to the mixer stage to filter the mixed signal and form a filtered mixed signal including filtered mixed signal components at the mixed signal frequencies; and an evaluating circuit connected to the filter circuit for analysis of the filtered mixed signal.
    • PCT No.PCT / DE91 / 00171 Sec。 371日期1991年10月18日 102(e)1991年10月18日PCT 1991年2月28日PCT PCT。 WO91 / 14163 PCT出版物 日本1991年9月19日。用于检测和评估内燃机爆震的电路装置包括位于内燃机中的爆震传感器,以产生具有不同爆震信号频率的爆震信号频率分量的爆震传感器信号; 产生恒定频率振荡器信号的振荡器; 混合器级产生混合信号,该混合信号包括小于爆震传感器信号的相应爆震信号频率的各种混合信号频率的混合信号频率分量,混合级连接以接收恒定频率振荡器信号和爆震传感器信号; 电平稳定电路,用于尽管内燃机的操作状态的改变,连接爆震传感器和混合器台的电平稳定电路的变化,也可以将爆震传感器信号的振幅调整到恒定幅度水平; 连接到混频器级的滤波器电路,以对混合信号进行滤波,并形成滤波后的混合信号,该混合信号包括混合信号频率的滤波后的混合信号分量; 以及连接到滤波器电路以分析滤波的混合信号的评估电路。
    • 128. 发明授权
    • Device for determining engine knocking intensity from detected
variations in engine cylinder internal pressure
    • 用于根据检测到的发动机气缸内部压力变化确定发动机爆震强度的装置
    • US5311765A
    • 1994-05-17
    • US808851
    • 1991-12-18
    • Yasunori Iwakiri
    • Yasunori Iwakiri
    • G01L23/22
    • G01L23/225
    • This invention relates to an engine knocking detector for determining knocking intensity from the oscillation waveform of the cylinder internal pressure. The total amount of heat generated in the combustion chamber during one revolution of the crankshaft is computed from the pressure waveform from which high frequency components have been eliminated, and from the running state of the engine. Also, the knocking start point during one revolution of the crankshaft is determined by comparing high frequency components extracted from the waveform and a predetermined reference value, and the amount of heat due to knocking is computed. A knocking intensity is then determined by comparing these two amounts of heat. By detecting knocking based on this comparison of amounts of heat generated in the combustion chamber, the knocking can be detected with high precision by means of a common logic irrespective of engine differences, installation positions of cylinder internal pressure sensors and individual sensor differences.
    • 本发明涉及一种用于根据气缸内部压力的振荡波形确定爆震强度的发动机爆震检测器。 在曲轴一转期间在燃烧室中产生的总热量是从消除高频分量的压力波形和从发动机运行状态计算的。 此外,通过比较从波形提取的高频分量和预定的参考值来确定曲轴一转期间的起始起始点,并计算由于敲击引起的热量。 然后通过比较这两个热量来确定敲击强度。 通过基于燃烧室中产生的热量的比较来检测爆震,可以通过公共逻辑高精度地检测爆震,而与发动机差异,汽缸内部压力传感器的安装位置和各个传感器差异无关。