4.11.3.c Poor mix
A рoor mixture is a mixture that has a significant excess of air. Due to the relatively large distance between the particles of gasoline that are sprayed in the air, the рoor mixture burns slowly and the gas pressure in the engine cylinder decreases. Due to the slow combustion of the mixture, most of the heat is absorbed by the walls of the cylinders and their cooling liquid, which causes the engine to overheat. The engine runs unstable on a рoor mixture. Its power decreases, and the specific fuel consumption (fuel consumption per unit of power) increases significantly.
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