Nitrogen acceleration system, translated as: nitrogen oxide acceleration system. Refers to the products developed and produced by American Huali Company. In the world racing, in order to improve the specific horsepower instantly, the liquid nitrogen oxide system used is NOS. In fact, as early as World War II, the German Air Force began to use NOS, and it was gradually used for linear acceleration after the war.
The working principle of NOS is to put N2O (nitrous oxide, commonly known as "nitrous oxide") in a high-pressure liquid state, then put it into a steel cylinder, and then mix it with air as a combustion-supporting agent and fuel in the engine (N2O can release oxygen and nitrogen, in which oxygen is the key combustion-supporting gas and nitrogen can help cool down). N2O produces two nitrogen atoms and one oxygen atom at high temperature, which assists combustion and cools the cylinder. This increases the integrity of fuel combustion and improves the power.
Because NOS provides additional combustion-supporting oxygen, the fuel injection quantity should be increased accordingly after installing NOS. As the saying goes, "If a horse wants to run fast, it should eat more grass", and the fuel is the grass of the engine, so that the power of the engine can be further improved.
NOS, like turbocharging and mechanical supercharging, aims to increase the oxygen content in the mixture and improve the combustion efficiency, thus improving the power output. The difference is that NOS directly uses oxides, and the purpose of pressurization is to increase air density through external force.