摘要 |
An ignition system for internal combustion engines has a clamping circuit (10, 11, 12, 16) for limiting the primary voltage and protecting high-voltage conducting parts against destruction. The ignition system has a voltage clamping device for the ignition transistor (3), and the clamping voltage is variable depending on a load on the secondary side. The primary voltage (Up) is determined by an evaluation unit (9). When the secondary laod is high, a high clamping voltage is applied, and when the secondary load is low, a low clamping voltage is applied. Moreover, the evaluation (23-28) of the primary voltage enables to diagnose defects in the ignition system.
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申请人 |
ROBERT BOSCH GMBH, 70469 STUTTGART, DE |
发明人 |
KUGLER, KARL-HEINZ, 7143 VAIHINGEN, DE;GOLLIN, WALTER, DIPL.-ING., 7141 MOEGLINGEN, DE;ZIMMERMANN, CHRISTIAN, DIPL.-ING. (FH), 7127 PLEIDELSHEIM, DE |