PSA Airlines Canadair Regional Jet Systems (PSA-CRJ) Practice Exam

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Prepare for the PSA Airlines Canadair Regional Jet Systems Exam. Study with comprehensive flashcards and multiple choice questions, each with hints and explanations. Get ready to excel!

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What is the function of a fuel/oil heat exchanger in CRJ systems?

To cool engine fuel
To warm engine fuel and cool engine oil
To regulate engine temperatures
To transfer heat to the cabin

The correct answer is: To warm engine fuel and cool engine oil

The function of a fuel/oil heat exchanger in CRJ systems is to warm engine fuel and cool engine oil. This component plays a critical role in maintaining optimal temperatures for both the fuel and the oil, which is essential for efficient engine performance and reliability. Warming the fuel helps prevent it from becoming too viscous, particularly in colder conditions, ensuring that the fuel flows easily to the engine. Simultaneously, cooling the engine oil serves to maintain its viscosity and lubricating properties, which are vital for the engine's moving parts to function smoothly without excessive wear. This dual functionality supports the overall thermal management of the engine system, contributing to improved efficiency and longevity. Without the heat exchanger performing this function, the fuel could become too cold and thick, leading to poor engine performance, while excessively hot oil could result in lubrication failures.