| 摘要 |
<p>DUAL PICK-UP IGNITION SYSTEM WITH AUTOMATIC TRANSFER BETWEEN PICK-UPS An ignition system for an internal combustion engine comprises a distributor containing a pair of magnetic pick-up devices each of which generates signals at a frequency representative of engine speed. One pick-up is used normally during starting of the engine to fire the engine spark plugs and the other pick-up during running. An automatic transfer circuit is provided to transfer control from the first, or start, pick-up to the second, or run, pick-up when the engine begins to run under its own power and accelerate from cranking speed. Should a condition occur indicative of a lack of signals from the run pick-up above a predetermined minimum frequency, the transfer circuit transfers control of ignition firing back to the start pick-up.</p> |
