| 摘要 |
PURPOSE: A rod ignition transformer for internal-combustion engines is provided to achieve a very compact design and be also capable of generating an ignition voltage of up to 30 kV with the smallest possible quantity of stored energy, thereby avoiding eddy losses at high rates of change in flux. CONSTITUTION: A rod ignition transformer(1) having a housing(2). Disposed on a ferromagnetic powder-composite material core(3) disposed in the center of the housing(2) is a primary coil(4). A coil body(5) made of an insulating material surrounds the primary coil(4), and separates the primary coil from the secondary coil(6), which is wound onto the coil body(5). Separating ribs(7) of the coil body(5) subdivide the windings of the secondary coil(6) into a plurality of chambers. An electrical connection(9) connects a high-voltage connector(8) to one end of the secondary coil(6). The high-voltage connector(8) is electrically insulated and mechanically fixed in the housing by a holder(12). A rubber-like insulation body(13) seals the housing on the high-voltage side. The primary coil(4) and the secondary coil(6) are surrounded by a cylindrical magnetic feedback member(14) for the magnetic flux. The hollow spaces between the housing(2), the feedback member(14), the secondary coil(6), the coil body(5) and the primary coil(4) are cast with a casting compound(15) to be high-voltage-proof.
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