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    • 4. 发明授权
    • Circuit arrangement for measuring an ion current in a combustion chamber
of an internal combustion engine
    • 用于测量内燃机的燃烧室中的离子电流的电路装置
    • US5914604A
    • 1999-06-22
    • US802898
    • 1997-02-18
    • Ulrich BahrMichael Daetz
    • Ulrich BahrMichael Daetz
    • F02P3/045F02P15/10F02P17/12
    • F02P17/12F02P15/10F02P3/0456F02P2017/125
    • An ion current in the combustion chamber of an internal combustion engine is measured by using the spark plug as an ion current sensor. The ignition circuit arrangement has an ignition coil or transformer with a primary winding forming a primary circuit and a secondary winding forming a secondary circuit in which the spark plug is connected. A measuring voltage is applied to the secondary circuit by circuit components forming a measuring circuit for measuring the ion current. The measuring circuit provides a measuring voltage at a value that is lower than the battery voltage of the ignition system or corresponds to the battery voltage at most. A rectifying element is connected to the secondary circuit which feeds the secondary or ignition current into the battery circuit of the ignition system while an ion current caused to flow by the measuring voltage applied to the secondary circuit is measured between sparking times when no ignition current is flowing.
    • 通过使用火花塞作为离子电流传感器来测量内燃机的燃烧室中的离子电流。 点火电路装置具有点火线圈或变压器,其中初级绕组形成初级电路,次级绕组形成二次电路,其中火花塞被连接。 通过形成用于测量离子电流的测量电路的电路部件向次级电路施加测量电压。 测量电路提供的测量电压值低于点火系统的电池电压,或最多对应于电池电压。 整流元件连接到次级电路,其将次级或点火电流馈送到点火系统的电池电路中,同时在不产生点火电流的火花时间之间测量在施加到次级电路的测量电压下流过的离子电流 流动。
    • 7. 发明授权
    • Electronic ignition system for internal combustion engines and method
for controlling the system
    • 内燃机电子点火系统及系统控制方法
    • US5758629A
    • 1998-06-02
    • US802889
    • 1997-02-18
    • Ulrich BahrMichael Daetz
    • Ulrich BahrMichael Daetz
    • F02P3/045F02P15/10F02P17/12F02P3/12
    • F02P17/12F02P15/10F02P3/0456F02P2017/125
    • An electronic ignition system for an internal combustion engine is so controlled that an ignition current or secondary current caused by an ignition spark at the respective spark plug in the secondary coil of an ignition transformer is evaluated for initiating, if necessary, follow-up charges of the primary coil to thereby generate further ignition impulses. The initial loading or charging impulse is provided by a respective control circuit. The total sparking time at the respective spark plug thus corresponds to a sequence of individual impulses, each of which causes an ignition spark. The detection of the ignition current in the secondary coils is performed with an ignition current measuring circuit arrangement connected to the secondary coils. This measuring circuit (SC) generates a signal representing the secondary or ignition current represented as a voltage drop across a measuring resistor (R.sub.2). The voltage drop signal is supplied to an evaluating circuit which in turn generates a follow-up loading signal in response to the result of the evaluation of the measured voltage drop signal.
    • 用于内燃机的电子点火系统被控制,以便评估点火变压器的次级线圈中的火花塞点火电火花点火引起的点火电流或二次电流,如果需要的话,启动后续充电 初级线圈从而产生进一步的点火脉冲。 初始加载或充电脉冲由相应的控制电路提供。 因此,各火花塞处的总火花时间对应于单个脉冲序列,每个脉冲都引起点火火花。 用二次线圈连接的点火电流测量电路装置进行次级线圈中的点火电流的检测。 该测量电路(SC)产生表示二次或点火电流的信号,其表示为跨越测量电阻器(R2)的电压降。 电压降信号被提供给评估电路,该评估电路又响应于测量的电压降信号的评估结果而产生后续加载信号。
    • 9. 发明授权
    • Circuit arrangement for measuring an ion current in a combustion chamber
of an internal combustion engine
    • 用于测量内燃机的燃烧室中的离子电流的电路装置
    • US6043660A
    • 2000-03-28
    • US802896
    • 1997-02-18
    • Ulrich BahrMichael Daetz
    • Ulrich BahrMichael Daetz
    • F02P3/045F02P15/10F02P17/12F02P17/00
    • F02P17/12F02P15/10F02P3/0456F02P2017/125
    • A circuit arrangement measures an ion current generated in the combustion chamber of an internal combustion engine during an iron current flow phase following an ignition phase. A voltage drop across a feedback resistor (R.sub.1) connected in parallel to an inverting amplifier is measured since the voltage drop is proportional to the ion current resistance. The amplifier is connected with its inverting input to a low voltage end of a secondary winding of an ignition transformer or coil. The high voltage end of the secondary winding is connected through a spark gap of a spark plug to ground, whereby the spark plug functions as an ion current sensor during the ion current flow phase. Negative voltage peaks flowing during an ignition phase and the ignition current flowing during the ignition phase are diverted through respective first and second circuit branches. The first branch has a first semiconductor diode (D.sub.1) grounding the low voltage end of the secondary winding for discharging the negative high voltage peaks while blocking the ignition current. The other diverting branch has a second semiconductor (D.sub.2) connected in parallel to the inverting amplifier.
    • 电路装置测量在点火阶段之后的铁电流流动相期间在内燃机的燃烧室中产生的离子电流。 测量与反相放大器并联连接的反馈电阻(R1)上的电压降,因为电压降与离子电流电阻成比例。 放大器与其反相输入端连接到点火变压器或线圈的次级绕组的低压端。 次级绕组的高压端通过火花塞的火花隙连接到地,由此在离子电流流动相期间,火花塞用作离子电流传感器。 在点火阶段期间流动的负电压峰值和在点火阶段期间流动的点火电流通过相应的第一和第二电路支路转向。 第一分支具有第一半导体二极管(D1),用于对次级绕组的低电压端进行接地,以便在阻止点火电流的同时对负的高电压峰值进行放电。 另一转向支路具有与反相放大器并联连接的第二半导体(D2)。
    • 10. 发明授权
    • Sensor arrangement for measuring the mass of a flowing fluid
    • 用于测量流动流体质量的传感器装置
    • US5817933A
    • 1998-10-06
    • US703732
    • 1996-08-27
    • Michael Daetz
    • Michael Daetz
    • G01P5/12F02D35/00G01F1/68G01F1/684G01F1/692
    • G01F1/692G01F1/684
    • A film sensor element is used to determine the mass of a flowing fluid, in particular an air mass flow in the intake tube of an internal combustion engine. Such a sensor is part of a measurement bridge and operates on the hot-wire anemometer principle, designed as a constant-resistance regulator connected to an operational amplifier. To reduce the response time, two separate resistance tracks of a film sensor element are structured in such a way that they are situated perpendicular to the direction of flow (S) with one track (6) along the leading edge and the other track (7) along the trailing edge. The tracks (6, 7) are electrically connected in parallel, such that the current can be divided according to the two resistance values as a current divider. Consequently, if the conductive track at the leading edge of the current divider cools to a greater extent this is counteracted by the rising current in the conductive track at the leading edge and thus greater electrical power is applied to the track at the leading edge. This is particularly advantageous in dual sensors for detecting the flow direction.
    • 膜传感器元件用于确定流动流体的质量,特别是内燃机的进气管中的空气质量流量。 这种传感器是测量桥的一部分,并且以热线风速计原理运行,设计为连接到运算放大器的恒定电阻调节器。 为了减少响应时间,膜传感器元件的两个单独的阻力轨迹被构造成使得它们垂直于流动方向(S)定位,其中一个轨道(6)沿着前缘和另一个轨道(7) )沿着后缘。 轨道(6,7)并联电连接,使得可以根据两个电阻值将电流分为电流分压器。 因此,如果分流器前缘处的导电轨道较大程度地冷却,则这通过前缘处的导电轨道中的上升电流抵消,并且因此在前缘处对轨道施加较大的电功率。 这在用于检测流动方向的双传感器中是特别有利的。