Prepare for the Engineman EN A School Test 1. Utilize flashcards and multiple choice questions with detailed explanations to boost confidence and readiness for the test.

Multiple Choice

What is delivered to the injector?

The injector is designed to spray fuel into the combustion chamber, and it needs fuel that is at high pressure to do that effectively. High-pressure fuel allows the injector to atomize the liquid into a fine mist and meter the exact amount needed at the precise moment. If the fuel were at low pressure, atomization would be poor, the spray would be coarse, and combustion would be inefficient or unstable. Compressed air isn’t what the injector uses to deliver fuel, and lubricating oil isn’t the fuel at all, so they don’t fit the role of what the injector receives.

The injector is designed to spray fuel into the combustion chamber, and it needs fuel that is at high pressure to do that effectively. High-pressure fuel allows the injector to atomize the liquid into a fine mist and meter the exact amount needed at the precise moment. If the fuel were at low pressure, atomization would be poor, the spray would be coarse, and combustion would be inefficient or unstable. Compressed air isn’t what the injector uses to deliver fuel, and lubricating oil isn’t the fuel at all, so they don’t fit the role of what the injector receives.