🔍 Key Concepts

• Difference between normal aspiration and forcing more air into the cylinder • How diesel engines increase power without increasing engine size • Common terminology used in engine manuals for pressurizing intake air

💭 Think About

• Which term is used in practice when a compressor (turbo or blower) raises intake air pressure above atmospheric before it enters the cylinder? • Is "air injection" related to how fuel is delivered or how air is supplied in a modern diesel? • Which options sound like standard engine terminology you’ve seen in manufacturer literature or training materials?

✅ Before You Answer

• Identify which choice refers to increasing intake air pressure above atmospheric using a blower or turbocharger • Confirm which choice is standard engineering/engine-room vocabulary on real ships • Eliminate any terms that mainly describe fuel delivery, not air supply