Does high engine intake air temperature affect power?
2 Answers
High engine intake air temperature does affect power, leading to decreased engine performance and potentially causing engine knocking. Many turbocharged engines are equipped with intercoolers specifically designed to reduce intake air temperature. The engine intake air temperature sensor and engine block temperature sensor provide crucial data for controlling fuel injection and air intake volumes. The intake air temperature sensor primarily determines whether the engine operates in normal mode, winter mode, or summer mode during startup. The normal operating temperature range for an engine is between 85 to 105 degrees Celsius, referring to the internal temperature of the engine.
Yes, high engine intake air temperature does affect power output, which is related to the thinning of air. I've driven many times and it's particularly noticeable on hot days, such as when driving on the highway in summer. When I step on the gas, the car feels sluggish, and acceleration is noticeably slower compared to cooler days. This is because the air density is lower on hot days, containing less oxygen, leading to incomplete combustion in the engine and naturally weaker power output. To save fuel and maintain performance, I often use some tricks, like parking in the shade to avoid direct sunlight on the engine compartment, which can lower the intake air temperature a bit. Additionally, installing an air intake cooler is also effective—it cools the air before it enters the engine, improving combustion efficiency and restoring power. Overall, reduced power during high-temperature seasons is a common issue, but paying attention to cooling can improve the driving experience.
