DIGITAL DWELL CIRCUIT
    10.
    发明授权

    公开(公告)号:KR840002246B1

    公开(公告)日:1984-12-07

    申请号:KR800002357

    申请日:1980-06-14

    Applicant: MOTOROLA INC

    Abstract: Digital dwell circuitry for a spark-and-dwell ignition control system uses maximum advance and reference sensors to produce pulse transitions, which determine positions for the maximum and minimum possible advances for spark ignition with respect to the position of the engine crank-shaft. For each maximum advance sensor pulse transition, a main counter starts a sequential running count of speed-independent clock pulses wherein the maximum count obtained by the counter is related to the engine crankshaft speed. The main counter running count also determines several inputs to a read-only memory (ROM) circuit whose output controls a rate multiplier.

Patent Agency Ranking