Which type of oil cooler is usually located within the engine or crankcase?

The plate type oil cooler is typically located within the engine or crankcase because of its compact design and efficient heat exchange capabilities. This configuration allows for a close coupling with the engine oil circuit, enabling effective cooling of the oil as it circulates. The plate design consists of multiple thin plates that create channels for the oil to flow, increasing the surface area for heat dissipation and facilitating better thermal management compared to larger, bulkier coolers.

In contrast, the other types of coolers may not be designed for internal engine use. Air-cooled types usually rely on ambient air to dissipate heat and are often found on engines where space and airflow are sufficient. Shell and tube coolers typically feature a larger and more complex structure which is often suited for external mounting. Fin type coolers, similar to air-cooled designs, are not typically incorporated directly within the engine, as they too depend on external airflow to function effectively.

Thus, the plate type cooler’s position within the engine or crankcase is advantageous for maintaining optimal oil temperatures, directly supporting the engine’s performance and longevity.