Which letter represents the scavenging air...

Question 1 of 2707066636eef28f7522a1c51fd83

Which letter represents the scavenging air system non-return valve in the illustration? Illustration MO-0003

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Question 1 of 27070

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Which letter represents the scavenging air system non-return valve in the illustration? Illustration MO-0003

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🔍 Key Concepts

• Scavenging air system layout on a large low-speed diesel engine • Purpose and location of a non-return (check) valve in an air system • Relationship between the scavenge air receiver and the scavenge ports in the cylinder liner

💭 Think About

• Trace the path of air from the turbocharger/air receiver into the cylinder and note where backflow would be most dangerous. • Ask yourself: which labeled component is a valve placed to stop high-pressure combustion gases from flowing back into the scavenge manifold? • Compare which letters point to a space or chamber versus which point to a discrete valve body on a flanged connection.

✅ Before You Answer

• Identify which letter points to the scavenge air receiver itself (a large drum/space, not a valve). • Identify which letters clearly indicate moving valve components or valve housings on the air side, not exhaust or fuel valves. • Confirm that the component you choose lies between the scavenge receiver and the cylinder’s scavenge ports, where a non-return function would be needed.