In a multi-cylinder, constant pressure,...

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Question 1 of 205eccefa3bacbc34ba4d47dff

In a multi-cylinder, constant pressure, turbocharged diesel engine, the combined exhaust temperature at the turbocharger inlet reads higher than the individual cylinder exhausts. This means the __________.

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🔍 Key Concepts

• Exhaust gas mixing at the turbocharger inlet in a multi-cylinder engine • How a combined pyrometer reading compares to individual cylinder exhaust temperatures • Normal vs. abnormal turbocharger inlet temperature behavior in constant-pressure systems

💭 Think About

• If several exhaust streams at slightly different temperatures mix together, how might that affect a single temperature reading compared to each individual branch? • Would a defect in the combined pyrometer usually cause a reading that is higher, lower, or erratic compared to the individual cylinder readings? • In a properly operating constant-pressure turbocharged system, what should you expect the relationship to be between individual cylinder exhaust temperatures and the combined exhaust temperature?

✅ Before You Answer

• Compare whether the combined exhaust temperature is within a reasonable margin of the hottest individual cylinder temperature • Consider whether there are any signs of turbocharger distress (noise, surging, loss of power) mentioned in the question • Ask whether the question describes a fault symptom or a normal characteristic of how exhaust gas temperatures are measured and mixed

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