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Apparatus for automatic detection of the course or behavior of the ignition voltages with respect to time in a multi-cylinder combustion engine

阅读:485发布:2022-03-19

专利汇可以提供Apparatus for automatic detection of the course or behavior of the ignition voltages with respect to time in a multi-cylinder combustion engine专利检索,专利查询,专利分析的服务。并且In an apparatus for automatically detecting the response behavior of the ignition voltage with respect to time in the various elements of the high voltage devices in a multi-cylinder engine, wherein a first measuring signal generator delivers signals corresponding to the ignition voltages for all cylinders and has a plurality of parallel-lying storage measuring channels of a measuring unit connected therewith to which also a control unit is assigned which is coupled with a second measuring signal generator delivering signals corresponding at least timely to the ignition voltages for all cylinders, and wherein the individual measuring channels have timing stages included therein which clear or open the measuring channels only during a predetermined phase of interest during the time response curve of the ignition voltages, and which includes also a clear signal switching device of a selector which is coupled with a third measuring signal generator delivering signals corresponding at least in time to the ignition voltages for all cylinders and also with a fourth measuring signal generator delivering signals corresponding at least in time to the ignition voltages for one of the cylinders which is first in the ignition sequence, further comprising a shift register and gate switching devices which switch the clear signal generator only upon the arrival of signals from the fourth measuring signal generator during an ignition cycle of the engine, whereby an accurate pick-up of the ignition voltages results with respect to time in the form of a response curve at various phases of the ignition process, which curves can be further evaluated in output devices of the register or printing type.,下面是Apparatus for automatic detection of the course or behavior of the ignition voltages with respect to time in a multi-cylinder combustion engine专利的具体信息内容。

1. An apparatus for the automatic analysis of the time response of the ignition voltages in a multi-cylinder engine, comprising, in combination: first pickup means operable for delivering measuring signals corresponding to the ignition voltages of all cylinders of said multi-cylinder engine; a measuring unit including a plurality of parallel signal storing and measuring circuits each having a first input connected to said first pickup means, a second input and an output; second pickup means operable for delivering signals corresponding in time to the ignition voltages of all cylinders, a control unit coupled to said second pickup means and including a plurality of timing stages each coupled to an assigned second input of respective storing and measuring circuits and being operable for activating said circuits in a predetermined time sequence corresponding to predetermined discrete phases of interest of the time response of the ignition voltage of a cylinder; and registration means connected to the outputs of respective storing and measuring circuits to register values as measured during said phases of interest of the ignition voltages of respective cylinders, wherein a storing and measuring circuit assigned to a last phase of interest of said ignition response includes means for counting oscillations of said ignition voltage.
2. The apparatus as claimed in claim 1, further comprising a third pickup means operable for delivering signals corresponding in time to the ignition voltage of a predetermined one cylinder, and a selector unit including a gate device responsive to said third pickup means and to said registration means, a gated switching means controlled by said gate device and being coupled to said control unit for determining time intervals for the ignition voltages of the cylinders subsequent to said one cylinder.
3. The apparatus as claimed in claim 2, wherein said gated switching means comprises a shift register having as many stages as many cylinders are in the engine is coupled to the output of said gate device.
4. The apparatus as claimed in claim 1, wherein said one cylinder is the cylinder which is first in the ignition sequence of the engine.
5. The apparatus as claimed in claim 1, wherein said first pickup means is placed between an ignition coil and a distributor device of said engine, said first pickup means comprising a capacitive or inductive measuring signal device.
6. The apParatus as claimed in claim 1, wherein said second pickup means is formed as a tap means on said ignition coil.
7. The apparatus as claimed in claim 2, wherein said third measuring device is a capacitive or inductive measuring device placed in the individual ignition conductor of a cylinder.
8. The apparatus as claimed in claim 1, wherein one of said storing and measuring circuits assigned to the first phase of interest of said response curve of said ignition voltages remains clear for a longer time and comprises a storage device having discharging circuit operated by said measuring unit after termination of an ignition cycle.
9. The apparatus as claimed in claim 2, wherein said registering means includes a printer coupled to said measuring unit and activating said clearing signal switch upon the registration of a last signal.
10. The apparatus as claimed in claim 1, wherein said means for counting and registering comprises a counter for changes of the polarity occuring in the signal after the termination of the ignition spike.
11. The apparatus as claimed in claim 10, wherein said counter comprises a threshold device for an amplitude of the signals coming from the first pickup means.
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