🔍 Key Concepts

• Compare the shape of the nozzle tip in the illustration with typical designs of pintle, open, self‑cleaning, and multi‑hole nozzles. • Think about whether the fuel exits through one opening or several small holes around the tip. • Recall which nozzle type has a protruding central needle (pin) that helps shape and clean the spray.

💭 Think About

• Look closely at the very end of the nozzle: do you see a central needle or multiple separate orifices? How does that narrow the choices? • Which of the listed nozzle types is specifically designed so that the needle movement helps clear carbon deposits from the seat? • If the tip appears to have only a single outlet, which option involving multiple holes can you immediately rule out, and what does that leave you to compare?

✅ Before You Answer

• Verify whether the illustration shows one main spray outlet vs. several small holes. • Check if there is a projecting pin/needle beyond the nozzle seat, and link that to the correct nozzle name. • Confirm which term among the choices is often associated with improved cleaning of carbon from the nozzle tip due to needle action.