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    • 1. 发明授权
    • Ignition circuit for an internal combustion engine
    • 内燃机点火电路
    • US5447131A
    • 1995-09-05
    • US285303
    • 1994-08-03
    • Hans NickelThomas SchusterMichael Wissmann
    • Hans NickelThomas SchusterMichael Wissmann
    • F02P5/15F02P9/00
    • F02P5/1502F02P9/005Y02T10/46
    • The invention is directed to an ignition circuit for an internal combustion engine in a portable handheld work apparatus wherein a work tool is driven via a clutch. The ignition circuit includes an ignition time point control which connects a spark plug via a switch to a voltage source in order to trigger an ignition spark. The spark plug is mounted in the combustion chamber of the engine. This connection takes place in dependence upon the crankshaft angle and the rpm of the engine. In order to prevent damage to the clutch because of a blocked work tool, a test value counter driven via a rpm gate circuit is provided. The test value counter increments its value in the pregiven rpm window of the gate circuit with each rotation of the crankshaft and the content of the test value counter is compared to a pregiven limit value by a comparator. The output of the comparator activates a rpm-reducing protective circuit and the output of the comparator indicates reaching or exceeding the limit value.
    • 本发明涉及一种便携式手持式工作装置中用于内燃机的点火电路,其中通过离合器驱动作业工具。 点火电路包括点火时间点控制,其通过开关将火花塞连接到电压源以触发点火火花。 火花塞安装在发动机的燃烧室中。 这种连接取决于发动机的曲轴角度和转速。 为了防止由于工作工具被堵塞而对离合器造成损坏,提供了通过rpm门电路驱动的测试值计数器。 测试值计数器在曲轴的每次旋转时增加门电路的预定转速窗口中的值,并通过比较器将测试值计数器的内容与预定极限值进行比较。 比较器的输出启动减速保护电路,比较器的输出指示达到或超过极限值。
    • 2. 发明授权
    • Circuit for supplying voltage to a microprocessor in an ignition circuit
for an internal combustion engine
    • 用于向内燃机的点火电路中的微处理器供电的电路
    • US5392747A
    • 1995-02-28
    • US102748
    • 1993-08-06
    • Hans NickelThomas Schuster
    • Hans NickelThomas Schuster
    • F02P1/08F02P3/08F02P1/02
    • F02P1/08
    • The invention is directed to a circuit for providing a controlled voltage supply to a microprocessor in an ignition circuit of an internal combustion engine equipped with a spark plug. The circuit includes: a generator having an induction coil and magnetic device for generating an alternating voltage in the coil; a microprocessor for controlling the spark plug; the microprocessor having first and second connecting terminals and a capacitor connected across the terminals; a thyristor having a gate electrode is connected between the induction coil and the capacitor; and, a voltage limiter is connected to the gate electrode, The controlled voltage supply for the thyristor is ensured over the entire rpm range of the engine without noticeable energy losses.
    • 本发明涉及一种用于向装备有火花塞的内燃机的点火电路中的微处理器提供受控电压的电路。 该电路包括:具有感应线圈的发生器和用于在线圈中产生交流电压的磁性装置; 用于控制火花塞的微处理器; 微处理器具有第一和第二连接端子以及跨过端子连接的电容器; 具有栅电极的晶闸管连接在感应线圈和电容器之间; 并且电压限制器连接到栅电极。在发动机的整个rpm范围内确保了晶闸管的受控电压源,而没有明显的能量损失。
    • 3. 发明授权
    • Arrangement for assisting an operator to adjust a carburetor
    • 用于协助操作者调整化油器的布置
    • US5375463A
    • 1994-12-27
    • US946948
    • 1992-09-17
    • Hans NickelThomas Schuster
    • Hans NickelThomas Schuster
    • F02B77/08F02M3/10F02M19/01F02P5/15G01M15/04G01M15/00G01M19/00
    • F02M19/01
    • The invention is directed to an arrangement for assisting an operator to adjust a carburetor. The arrangement has a display for the setting of the carburetor of an internal combustion engine such as a two-stroke engine. An actual signal proportional to the carburetor setting is compared to desired limit values by means of a comparator and the display is switched in dependence upon the comparison result by a control unit into different operating states. The display assumes a first operating state below a minimum desired limit value and, between the minimum and maximum desired values, the display is switched into a second operating state. The arrangement for carburetor adjustment makes it possible for the operator to recognize whether the actual signal is above or below the window determined by the desired limit values. This is achieved in that, above the maximum desired limit value, the display is switched into a third operating state, for example, by driving the display intermittently.
    • 本发明涉及一种用于辅助操作者调节化油器的装置。 该装置具有用于设置诸如二冲程发动机的内燃机的化油器的显示。 与化油器设置成比例的实际信号通过比较器与期望的极限值进行比较,并且根据控制单元对不同操作状态的比较结果来切换显示。 显示器假定低于最小期望极限值的第一操作状态,并且在最小和最大期望值之间,将显示切换到第二操作状态。 化油器调节的布置使操作者能够识别实际信号是否高于或低于由所需极限值确定的窗口。 这是通过超过最大期望极限值来实现的,例如通过间歇地驱动显示器将显示切换到第三操作状态。