Heat exchangers are most commonly found in which part of a diesel engine?

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Multiple Choice

Heat exchangers are most commonly found in which part of a diesel engine?

Heat must be removed from hot fluids in an engine to keep operating temperatures and fluid properties within design limits. In a diesel engine, the lubricating oil absorbs a lot of heat as it circulates to lubricate bearings and moving parts. To prevent the oil from thinning or degrading and to protect wear surfaces, it passes through a lube oil cooler, a heat exchanger that transfers that heat to the cooling medium (often cooling water or seawater). This setup is found on virtually all engines, making it the most common location for a heat exchanger in the engine. Other systems can have heat exchangers too—cooling water systems, for example, use them to reject heat to the environment—but the lubrication circuit’s cooler is the standard, universally present heat exchanger.

Heat must be removed from hot fluids in an engine to keep operating temperatures and fluid properties within design limits. In a diesel engine, the lubricating oil absorbs a lot of heat as it circulates to lubricate bearings and moving parts. To prevent the oil from thinning or degrading and to protect wear surfaces, it passes through a lube oil cooler, a heat exchanger that transfers that heat to the cooling medium (often cooling water or seawater). This setup is found on virtually all engines, making it the most common location for a heat exchanger in the engine. Other systems can have heat exchangers too—cooling water systems, for example, use them to reject heat to the environment—but the lubrication circuit’s cooler is the standard, universally present heat exchanger.

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