The Intelligent Ignition System is capable of controlling ignition timing and phase angle.

• A. True
• B. False
• C. Not Specified
• D. Only Some Models

Answer: (A)

This item centers on how an Intelligent Ignition System uses sensors and ECU logic to adjust when the spark occurs and how the firing is phased across the engine cycle. Ignition timing is the moment the spark plug fires relative to a specific crankshaft position, typically measured in degrees before top dead center. Shifting this timing helps optimize combustion for different speeds and loads, improving power, efficiency, and emissions.

Phase angle control refers to the relative timing between ignition events across cylinders or coil packs within one engine cycle. By varying this phase relationship, the system can synchronize firing with the engine’s position, manage dwell time for the coils, and reduce knock under varying conditions.

Because an Intelligent Ignition System is designed to actively manage both when the spark occurs and how the ignition events are phased, it can control both timing and phase angle. Therefore, the statement is true.