发明名称 |
IGNITION PERFORMANCE MONITOR AND MONITORING METHOD FOR CAPACITIVE DISCHARGE IGNITION SYSTEMS |
摘要 |
The ignition performance monitoring method and apparatus determines the time period during which the current generated in the primary winding of an ignition coil by a pulse from a capacitive discharge ignition system takes the decay to a zero ampere level and uses this determined period to calculate and indicate the firing voltage required to fire a spark plug. The apparatus includes a current sensor connected to sense the current in the primary winding of the ignition coil and a comparator to compare the sensed current with a reference indicative of a zero ampere current level. The comparator provides an output signal having a pulse width indicative of the time the sensed current was above the zero ampere level to a processor which uses the output signal and data values unique to the ignition coil employed to determine a firing voltage for a spark plug fired by the ignition coil.
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申请公布号 |
CA2088616(A1) |
申请公布日期 |
1993.08.29 |
申请号 |
CA19932088616 |
申请日期 |
1993.02.02 |
申请人 |
COLTEC INDUSTRIES INC. |
发明人 |
HOEFLICH, GARY R. |
分类号 |
F02P3/09;F02P17/12;(IPC1-7):F02P11/02 |
主分类号 |
F02P3/09 |
代理机构 |
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主权项 |
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