What are the effects of ethanol gasoline on cars?
1 Answers
Ethanol gasoline is a mixture rather than a new compound. Adding an appropriate amount of ethanol to gasoline as a vehicle fuel can save petroleum resources and reduce air pollution from vehicle emissions. The specific effects of ethanol gasoline on cars are as follows: 1. Increased fuel consumption: Since the calorific value of ethanol is about 33% lower than that of gasoline, the energy density of ethanol gasoline decreases compared to pure gasoline of the same volume. 2. Reduced power performance: Due to its lower calorific value than pure gasoline and the fact that ethanol's evaporation temperature is higher than that of gasoline, the slower vaporization speed during combustion affects the formation of the air-fuel mixture, ultimately leading to a decrease in power. 3. Difficulty in cold starts: Ethanol gasoline has a high latent heat of vaporization and absorbs more heat. During vaporization, it absorbs more heat from the surrounding environment, leading to a decrease in the working temperature inside the engine cylinder, making it difficult to start at low temperatures. This phenomenon is particularly noticeable in northern regions. 4. Cleaning effect: Ethanol gasoline not only reduces vehicle emissions but also has a good cleaning effect, effectively eliminating the sedimentation and condensation of fuel impurities in the vehicle's fuel tank and fuel system, providing excellent fuel system cleaning.
