Heavy Duty Equipment Technician Red Seal Exam Prep · Question
What is the primary role of the oil cooler in a heavy-duty diesel engine?
The oil cooler's function is to ensure the engine oil remains within its optimal operating temperature range by exchanging heat with the engine's coolant, preve
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Question: What is the primary role of the oil cooler in a heavy-duty diesel engine?
Answer options:
- To heat the oil quickly during cold starts
- To filter contaminants from the engine oil ✅ To transfer excess heat from the engine oil to the engine coolant
- To increase oil pressure within the lubrication system
Correct answer: To transfer excess heat from the engine oil to the engine coolant
Explanation: The oil cooler's function is to ensure the engine oil remains within its optimal operating temperature range by exchanging heat with the engine's coolant, preventing oil degradation from excessive heat.
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- What is the primary purpose of a 'lock-up clutch' in a modern heavy-duty torque converter?
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