Universal ignition system, used especially for smaller engines with a magnet rotor and electronic ignition, for which there is no supply of spare parts anymore. In general, the ignition can be used everywhere where one part rotates. It can be used with crankshaft or camshaft speed. In this "rotating part" (the shown example is a magnetic flywheel of an Aermacchi) must be inserted two (or four at camshaft speed) magnets. The pickup can also be installed inside the crankcase because the sensor is heat and oil resistant.
The measurement takes place by magnetic-field sensors (Hall effect sensors), of which there are basically two different types: astable and bistable. The astable type only generates an output signal when it is inside a magnetic field. The bistable type will remain in the state until it is reset by an opposite field again, and this behavior is used for the ignition measurement. The ignition software requires a signal ratio of 1:6 per crankshaft revolution, and this is achieved by two differently polarized magnets, which are integrated at an angle of 60 ° in the rotating element. The 'S'-poled magnet activates the sensor and the' N'-poled magnet deactivates it exactly at TDC position of the piston.
At camshaft speed, the number of magnets must be doubled to get the same signal ratio.
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The real magnet size is Ø = 3mm, h = 2mm, and can be directly used only in non-magnetic materials. In steel a magnetically insulated casing is used: a threaded brass bolt M5x12, which can be reduced depending on application down to 3mm. The attachment of the magnets in the sleeve or directly in the material is done by a special adhesive that must be heated for curing at 150 °.
The different polarity is signed by different colours (red and blue, like in the picture). |
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Assembly example with a magnet flywheel
The outside material of the flywheel has a thickness of 3 mm and the magnetic sleeves are reduced to this level and had been glued into the steel. |
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| The actual Hall sensor is fitted in an aluminum case, which can be fastened with two M2, 5 screws on a plate or similar. The LED is used for adjusting the ignition timing. |
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The assembly of the magnets and the pickup can be done in our company, however, depending on efforts costs increase between 50 - and 150, - Euro. |
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| Single channel version ZDG3.2 with 9 advance curves for single cylinder and paralleltwins |
Twin channel version for two- and fourcylinder |
| Price: 279,- Euro incl. VAT |
Price: 309,- Euro incl. VAT |
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| Single channel version ZDG3.1 with 3 advance curves for single cylinder and paralleltwins |
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| Price: 209,- Euro incl. VAT |
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