🔍 Key Concepts

• How fuel is prepared for combustion inside a diesel engine cylinder • Difference between changing fuel into a fine spray versus changing its physical state to a gas or vapor • Role of the fuel injector in a diesel engine

💭 Think About

• When fuel is injected into a diesel cylinder, what physical form does it need to take so it can mix well with air and burn efficiently? • Which term specifically refers to breaking a liquid into very tiny droplets, rather than turning it into a true gas? • Think about what a fuel injector nozzle actually does to the liquid fuel as it passes through small holes under very high pressure.

✅ Before You Answer

• Identify which option best describes liquid broken into very fine droplets • Eliminate any options that refer mainly to changing state from liquid to gas (like boiling or evaporating) rather than spraying • Ask which term is commonly used with injector nozzles and spray patterns in diesel engineering