Kølevæsketryk

Kølevæsketryk, often referred to as coolant pressure, is the pressure exerted by the engine's coolant within the cooling system. This pressure is crucial for the efficient operation of the engine. The cooling system is a closed loop designed to remove excess heat generated during combustion. The coolant, typically a mixture of water and antifreeze, circulates through the engine block, absorbing heat, and then flows to the radiator where it is cooled before returning to the engine.

The pressure within the cooling system is maintained by a sealed cap on the expansion tank or radiator. As the coolant heats up, it expands, and this expansion increases the pressure within the system. The pressure cap is designed to hold this pressure within a specific range. This elevated pressure raises the boiling point of the coolant, allowing it to operate at temperatures above the normal boiling point of water without vaporizing. Vaporization would lead to a loss of cooling efficiency and could cause overheating.

Maintaining the correct kølevæsketryk is vital. If the pressure is too low, the coolant may boil at lower temperatures, leading to engine overheating. If the pressure is too high, it can stress components of the cooling system, such as hoses, seals, and the radiator, potentially causing leaks or damage. Regular checks of the cooling system and the condition of the pressure cap are important for ensuring proper kølevæsketryk and preventing engine problems.