🔍 Key Concepts

• Basic operation of a diesel engine versus a gasoline engine • How fuel and air are delivered differently in diesel and gasoline systems • Function of an injector in high‑pressure fuel systems

💭 Think About

• Ask yourself: In a diesel engine, does the fuel mix with air before entering the cylinder or is it forced in directly into the cylinder under high pressure? • Which of these components is normally associated with gasoline engines, not diesels? • Which listed part is specifically designed to spray or atomize fuel into the combustion space?

✅ Before You Answer

• Eliminate any parts that handle air only rather than fuel • Identify which option is commonly used on spark‑ignition (gasoline) engines, not compression‑ignition (diesel) engines • Confirm which component’s main job is to deliver and finely atomize fuel directly into the cylinder