发明名称 |
Digital circuitry for producing indicative signals at predetermined times prior to periodic pulses |
摘要 |
Digital circuitry adaptable for controlling dwell in a spark and dwell ignition control system is disclosed. Maximum advance and reference sensors are utilized to produce pulse transitions which determine positions of maximum and minimum possible advance for spark ignition with respect to the position of the engine crankshaft. 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 engine crankshaft speed. The running and maximum counts of the main counter are utilized by dwell circuitry to determine the time prior to the next maximum advance pulse at which spark coil excitation should occur.
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申请公布号 |
US4535464(A) |
申请公布日期 |
1985.08.13 |
申请号 |
US19810317710 |
申请日期 |
1981.11.02 |
申请人 |
MOTOROLA, INC. |
发明人 |
PETRIE, ADELORE F. |
分类号 |
F02P3/045;(IPC1-7):G06M3/02 |
主分类号 |
F02P3/045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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