Gas-fueled internal combustion engines, such as gas engines, liquefied petroleum gas engines, and natural gas-powered engines, do not need to be refitted when refueling biogas. They can be used instead of gas, as long as the biogas transmission line is directly connected to the original gas mixture. Liquefied petroleum gas and natural gas started the internal combustion engine work.
1. When biogas is used in the fuel of gas-fueled internal combustion engines, and gas-fueled internal combustion engines, such as coal gas engines, liquefied petroleum gas engines, and natural-gas-fired engines, do not need to be modified when refueling biogas, as long as they directly pass the biogas gas pipelines into the original machine. Within the mixer, it can replace gas, liquefied petroleum gas and natural gas to start the internal combustion engine.
2, gasoline engine modification and application, use biogas to do gasoline engine fuel, the original structure does not change basically, just in the original machine carburetor before adding a biogas - air mixer, you can replace gasoline, start the normal operation of the gasoline engine. If the supply of biogas is insufficient, gasoline can be immediately resumed for work. However, for a two-stroke gasoline engine that uses mixed oil, such as a rural small plant protection engine or a gasoline engine on a motorcycle, this modification method is not suitable. Because this type of gasoline engine is lubricated by a certain amount of oil in the fuel. If only biogas is used, the engine's lubricant will not be sourced and it will quickly burn the engine.
3, the modification and application of diesel engines, diesel engine work is to rely on the air in the cylinder is compressed after the high temperature (480-680 °C) to ignite diesel to work, and the ignition temperature of biogas is much higher than diesel ( 680-840°C). Therefore, when the diesel engine is converted to a biogas engine, it must be managed to ignite the biogas before the compression is completed. At present, there are two kinds of ignition methods: diesel ignition and electric ignition.
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