The towboat to which you are assigned has...

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Question 1 of 2066636eef28f7522a1c5203a9

The towboat to which you are assigned has main diesel engines fitted with intake and exhaust systems as shown in the simplified illustration. What is the primary purpose of the intercooler? Illustration MO-0180

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Question 1 of 20

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🔍 Key Concepts

• Location of the intercooler in the airflow path (between blower/turbocharger and engine intake). • Effect of cooling compressed air on its density and oxygen content. • Difference between cooling air versus cooling turbocharger components or exhaust gas.

💭 Think About

• Follow the arrows in the illustration from the air intake through the blower, intercooler, and into the scavenging air ports—what happens to the air as it passes each stage? • If you cool air that has just been compressed by a blower, how does that affect the amount of air (by mass) that can enter the cylinder for each stroke? • Which of the listed options describes a benefit to engine performance rather than protection of a specific component?

✅ Before You Answer

• Confirm from the diagram that the intercooler is in the air path, not in the exhaust path or directly around the turbocharger wheels. • Decide whether the intercooler is cooling engine charge air or turbocharger hardware. • Ask: which choice explains how the engine can burn more fuel efficiently due to what the intercooler does to the intake air?

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