The fuels used by gas generators are mainly methane (such as natural gas, biogas), carbon monoxide (such as producer gas), hydrogen (such as hydrogen, blast furnace gas) and other alkanes (such as liquefied petroleum gas). The composition and knock resistance of these gas fuels directly affect the power index and fuel economy index of the gas generator. Due to the large differences in the composition and knock resistance of different gas fuels, the performance indicators of gas generators are also very different. The fuel with methane as the main component has high calorific value and good knock resistance. Burning non-methane fuels, the performance of gas generators is low.
The fuel used by gas generators is mainly methane, carbon monoxide, hydrogen and other alkanes. Mainly methane, such as natural gas, biogas; Mainly carbon monoxide, such as producer gas; Mainly hydrogen, such as hydrogen, blast furnace gas; Mainly alkanes (except methane), such as liquefied petroleum gas Wait. Because the composition of various gas fuels is very different, the calorific value of the mixed gas also differs greatly, and the difference in height can reach several times. Therefore, the fuel economy indicators of gas engines do not use weight or volume in measurement, but generally use heat consumption per unit power [kJ/(kW·hour)] to express. The anti-knock performance of the gas fuel used by the gas generator (see knock) is expressed by the methane number, and a high methane number indicates good anti-knock performance. The methane value of pure methane is 100. The methane value of the mixture of methane and inert gas is greater than 100.