公开(公告)号：US4637247A

公开(公告)日：1987-01-20

申请号：US762612

申请日：1985-08-05

申请人： Adolf Dreyer ,  Herman Roozenbeek

发明人： Adolf Dreyer ,  Herman Roozenbeek

IPC分类号： G01H17/00 ,  G01L23/22

CPC分类号： G01L23/225

摘要： To reliably distinguish between knocking signals derived from an internal combustion engine knock sensor from all the other signals likewise derived from the knock sensor, which includes background noise signals, statistically distributed disturbance signals and the like, a correlation signal is generated, and the received signal is correlated with the correlation signal, which is cyclically varying at an average frequency which is of the frequency of the expected knocking signal, or a whole number multiple thereof. An output recognition is provided upon correlation between the correlation signal and the signal from the knocking sensor. The system can be implemented by a signal generator (6, 61, 62; 63) which provides the correlation signal, correlation being effected by an AND-gate (7, 71, 72; 73), or by software in a microprocessor in which an incoming knocking signal is interrogated in cadence with cyclical variation at the frequency which is the expected knocking frequency of the engine.

摘要翻译： 为了将来自内燃机爆震传感器的爆震信号与包括背景噪声信号，爆震传感器同样衍生的其他信号，统计分布的干扰信号等可靠地区分，产生相关信号，并且接收信号 与相关信号相关，该相关信号在预期的敲击信号的频率的平均频率或其整数倍的周期性地变化。 在相关信号和来自爆震传感器的信号之间的相关性时提供输出识别。 该系统可以由提供相关信号的信号发生器（6,61,62; 63）来实现，相关性由AND门（7,71,72,73）实现，或通过微处理器中的软件实现，其中 输入的敲击信号以节奏的方式进行询问，其频率是发动机预期的爆震频率的周期性变化。

公开(公告)号：US5045796A

公开(公告)日：1991-09-03

申请号：US547056

申请日：1990-06-29

申请人： Ulrich Bentel ,  Adolf Dreyer

发明人： Ulrich Bentel ,  Adolf Dreyer

IPC分类号： F02B1/04 ,  F02P17/02 ,  F02P17/12

CPC分类号： F02P17/02 ,  F02P17/12 ,  F02B1/04

摘要： A circuit for recognizing missing or poor firings in Otto (gasoline) engines with multi-circuit ignition systems features a voltage tap on the primary side of each ignition coil (10, 11), leading to a respective controllable transistor (16, 19). A common junction point (21) for the respective transistors provides signals, representative of the control states of the transistors, for evaluation (32). These signals correspond to the respective spark burning voltages. The cylinders fire sequentially, so the voltage patterns of the respective cylinders appear sequentially at the common junction point, and it is possible, even in multi-circuit ignition systems, to monitor the individual ignition circuits in a simple manner, and to interrupt fuel supply to any less-than-optimally firing cylinder, thereby preventing unburnt hydrocarbon overload on the catalytic converter and on the environment. Preferably, the evaluation circuit includes an A/D converter (33) and an INTEL 8051 microprocessor (34).

摘要翻译： 用于识别具有多回路点火系统的奥托（汽油）发动机中的缺失或不良点火的电路在每个点火线圈（10,11）的初级侧具有电压抽头，从而导致相应的可控晶体管（16,19）。 用于各个晶体管的公共连接点（21）提供用于评估（32）的代表晶体管的控制状态的信号。 这些信号对应于各自的火花燃烧电压。 气缸依次进行点火，因此各个气缸的电压模式在公共接点处依次出现，即使在多回路点火系统中，也可以以简单的方式监视各个点火电路，并中断燃油供给 到任何不到最佳的发射气缸，从而防止催化转化器和环境下的未燃烧的烃过载。 优选地，评估电路包括A / D转换器（33）和INTEL8051微处理器（34）。

公开(公告)号：US5333489A

公开(公告)日：1994-08-02

申请号：US768895

申请日：1991-10-18

申请人： Adolf Dreyer

发明人： Adolf Dreyer

IPC分类号： G01L23/22

CPC分类号： G01L23/225

摘要： 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.

摘要翻译： 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。