What is the maximum temperature of the engine casing?
2 Answers
The maximum temperature of the engine casing can reach 150-200°C, while the normal operating temperature is typically between 85-90°C. Methods to cool the engine casing: 1. Thermostat: The optimal working temperature for most car engines is around 90°C. When the temperature exceeds this, the thermostat automatically opens to allow water circulation. If the temperature rises above 90°C, the radiator's electric fan will start running to cool the engine. 2. Coolant: Coolant is used to regulate the engine's temperature. Whether the engine temperature is high or low, it affects the viscosity of the engine oil, which can lead to increased engine wear. Therefore, the cooling system is crucial.
I've driven performance cars on long trips a few times. When I stomp on the accelerator for hard acceleration, the engine casing feels scorching hot to the touch - exceeding 150°C is common, and sometimes approaching 200°C isn't unusual. This is mainly due to internal combustion heat transferring to the casing, especially with the cylinder head area being the hottest. During normal driving, temperatures are much lower, typically between 100-150°C, but they skyrocket during high-speed hill climbs or when stuck in traffic with poor ventilation. A good cooling system makes a big difference, with fans automatically kicking in to dissipate heat. I recommend avoiding prolonged high-intensity driving to prevent casing degradation or burn hazards. Regularly checking coolant levels and fan RPM is a good practice.
