🔍 Key Concepts

• diesel engine fuel injection terminology • difference between atomization and fuel spray travel distance • how fuel behavior affects combustion in the cylinder

💭 Think About

• When fuel is injected into a cylinder, what word describes how FAR droplets move into the air space before they actually ignite? • Which term refers to breaking fuel into tiny droplets, and which term refers to the droplets’ motion and reach? • In combustion, why is it important that fuel travels deeply into the air in the cylinder instead of burning right at the injector tip?

✅ Before You Answer

• Match each option with its basic definition: breaking into droplets, mixing motion of air, distance fuel spray travels, lasting/remaining quality • Ask yourself which term marine diesel manuals use for the reach of the fuel spray into the combustion chamber. • Eliminate any term that mainly refers to air motion or droplet size, not distance traveled before burning.