What is CDI? The Core Ignition System for Modern Small Engines
Published Time:
2026-03-09
CDI, short for Capacitor Discharge Ignition, is a high‑performance electronic ignition system widely used in motorcycles, scooters, ATVs, outboard motors, and general‑purpose gasoline engines. Unlike traditional contact‑breaker ignition, CDI uses a capacitor to store electrical energy and release it instantly to create a powerful spark. This design allows faster ignition timing, higher RPM capability, and more stable combustion, making it the standard ignition solution for modern lightweight power equipment.
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