Additive of methyl alcohol fuel for cold starting car

Abstract

This invention relates to a coldstart additive for methanol fuel. The additive is composed of: hydrocarbon 83-90 vol.%, ketone 5-8 vol.%, ether 2-4 vol.% and alcohol 3-5 vol.%. Once added into methanol fuel, the additive can effectively increase the low-temperature steam pressure of methanol fuel, and can solve the coldstart problem of methanol automobiles in winter.

Description

technical field [0001] The invention relates to a fuel additive, in particular to a cold start additive for methanol fuel vehicles. Background technique [0002] my country has become a net importer of crude oil since 1993, and the proportion of imports has increased year by year. The contradiction between supply and demand of crude oil has become increasingly prominent, seriously restricting my country's economic development. With the rapid economic growth, our country has entered the era of modern transportation, and the resulting environmental problems are becoming more and more serious. The development of natural gas, fuel methanol, ethanol and other petroleum alternative energy will become the development direction of my country's vehicle alternative energy in the 21st century. [0003] However, alcohol fuels such as methanol and ethanol have high latent heat of vaporization and low low-temperature vapor pressure. When the engine is in a low ambient temperature, the ev...

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Problems solved by technology

[0003] However, methanol, ethanol and other alcohol fuels have high latent heat of vaporization and low low-temperature vapor pressure. When the engine is at a low ambient temperature, it is difficult for the evaporation of the fuel to reach the lower flammable limit and cannot be started.

In addition, the large latent heat of vaporization reduces the temperature of the fuel intake pipe, and the fuel evaporation is small, which makes the distribution of mixed combustion gas in each cylinder uneven, resulting in a decrease in power