What are the effects of high engine intake air temperature?
2 Answers
The effects of high engine intake air temperature: 1. Excessive temperature of components can significantly reduce the mechanical properties of metal materials, leading to deformation and damage; 2. The normal gaps between various components will be disrupted due to thermal expansion of parts, preventing them from functioning properly; 3. It can cause engine oil viscosity to become thinner or even oxidize and deteriorate, reducing lubrication effectiveness and accelerating component wear; 4. The air charge in the cylinders decreases, resulting in reduced engine power. In gasoline engines, detonation may also occur. The normal operating temperature range for an automotive engine is between 85 to 105 degrees Celsius. Below 85 degrees, gasoline atomization is poor, lubricating oil flow is inadequate, and the engine is prone to wear and poor performance; above 105 degrees, the engine is susceptible to overheating; boiling may occur at temperatures above 110 degrees.
I remember driving on a desert highway a few years ago when the engine suddenly felt very weak. Upon inspection, I found that the intake air temperature was too high. High temperatures reduce air density, which means less oxygen in the cylinders, leading to incomplete combustion and a direct drop in power—acceleration feels sluggish. It also increases the risk of engine knocking, with that crackling sound that can potentially damage the pistons or cylinder head. Emissions of pollutants rise, making it harder to meet environmental standards. Fuel consumption climbs, wasting money on gas. I usually avoid long trips in hot weather, keep the air filter clean, regularly check the cooling system, and park in the shade. Overall, this issue really affects driving safety and your wallet—dealing with it early saves a lot of hassle.
