motortemperatur

Motortemperatur is the term used in German-speaking automotive contexts for the temperature of an engine during operation. It is an essential parameter for assessing engine health, efficiency and reliability. Modern internal combustion engines normally operate with a coolant temperature between 80 °C and 95 °C. The coolant, which circulates through the engine block, head and a radiator, absorbs heat from the pistons, cylinder walls and bearing surfaces and dissipates it into the air.

A typical engine temperature sensor is a platinum resistance temperature detector (RTD) or a thermistor mounted in the coolant jacket. The signal from the sensor is processed by the engine control unit (ECU) which uses it to optimise fuel injection, ignition timing and, in turbocharged units, boost pressure. If the temperature rises above a safe limit (often around 110 °C to 120 °C) the ECU may trigger coolant circulation, adjust the air‑fuel mixture or even shut down the engine to prevent damage.

Drivers can monitor the engine temperature through a digital dashboard display or an analog gauge. Visible signs of overheating include the temperature gauge moving into the red zone, steam from the heater vents, or a burning smell. Regular maintenance of the cooling system—checking coolant level, thermostat operation, radiator condition and water pump integrity—helps keep the Motortemperatur within normal parameters and extends engine life.