The turbocharged, four-stroke, main...

Study

Question 1 of 2066636eef28f7522a1c5203e0

The turbocharged, four-stroke, main propulsion diesel engines on your fishery research vessel are protected with dry-type air intake filters. The engines are fitted with dial-type restriction indicators measuring the pressure in the air duct between the air intake filter and the turbocharger blower inlet. Under what conditions should the air intake filters be evaluated using the restriction indicators?

Back

Question 1 of 20

66636eef28f7522a1c5203e0

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

• Turbocharged diesel engine air demand increases with both RPM and load • Air intake restriction indicators are meant to show maximum pressure drop across the filter • The worst-case (highest restriction) condition occurs when airflow through the filter is greatest

💭 Think About

• Think about when the engine is pulling the MOST air through the intake system: is it mainly affected by RPM, by load, or by both together? • Ask yourself: when do I care most about a dirty filter—when the engine is barely working, or when it is working as hard as it safely can? • Compare each choice: in which option would the pressure drop across the filter be at its maximum, so that the restriction indicator gives the most meaningful reading?

✅ Before You Answer

• Make sure the condition you choose represents maximum normal operating airflow through the filter, not a light-duty condition. • Confirm whether a disengaged clutch (no propeller load) really lets the engine develop full air demand, even if RPM is high. • Verify that the selected condition reflects how the engine would be run in service at full power, not during light-load or idle operation.

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed