How do immersion coolant heaters distribute heat in an engine?

Immersion coolant heaters distribute heat in an engine primarily through convection. When the immersion heater is placed directly in the coolant fluid, it heats the fluid around it. As the coolant heats up, it becomes less dense and rises, while the cooler, denser fluid descends to take its place. This natural movement of the fluid creates a circulation pattern, which helps evenly distribute the heat throughout the coolant and, consequently, the engine.

This method is efficient in maintaining an even temperature across the engine, as the convection currents continuously move the heated coolant to areas where heat is required. This ensures better performance and prevents localized overheating, contributing to the overall efficiency of the engine's operation.