Engine rapid combustion device suitable for low-evaporation characteristic fuel

Abstract

The invention relates to an engine combustion device. The engine combustion device comprises a main combustion chamber, a spark plug, an auxiliary combustion chamber and flame spray holes, wherein initial flames are generated in the auxiliary combustion chamber through discharging of the spark plug, then the flames are generated in the auxiliary combustion chamber and develop rapidly, then multiple jet flames are generated through the plurality of spray holes used for connecting the auxiliary combustion chamber with the main combustion chamber, the multiple jet flames are jetted into the maincombustion chamber at the same time and are equivalent to a high-energy multi-core ignition source of the main combustion chamber, and mixed gas in the main combustion chamber is ignited by multiple large-area flames at the same time. According to the engine combustion device, the combustion speed of the mixed gas is increased, the ignition stability and reliability are improved, and the knockingphenomenon can be effectively restrained.

Description

technical field [0001] The invention relates to the technical field of energy utilization, in particular to an engine rapid combustion device suitable for fuels with low evaporation characteristics. Background technique [0002] Due to its own physical and chemical properties, fuels with low evaporation characteristics have characteristics such as low saturated vapor pressure and slow evaporation rate. However, when they are applied to ignition piston engines, they will generally cause poor mixture formation quality, unstable combustion process, and flame propagation. Slower speed and other problems will cause the engine to be difficult to start cold, easy to knock, and insufficient power output. The traditional spark plug ignition method only relies on increasing the ignition energy to achieve the purpose of improving ignition reliability and stability, but the increase in ignition energy will also increase the wear of the spark plug electrode, and the weight, volume and co...

AI Technical Summary

Problems solved by technology

[0002] Due to its own physical and chemical properties, fuels with low evaporation characteristics have characteristics such as low saturated vapor pressure and slow evaporation rate. However, when they are applied to ignition piston engines, they will generally cause poor mixture formation quality, unstable combustion process, and flame propagation. Slower speed and other problems will cause the engine to be difficult to start cold, easy to knock, and insufficient power output.

The traditional spark plug ignition method only relies on increasing the ignition energy to achieve the purpose of improving ignition reliability and stability, but the increase in ignition energy will also increase the wear of the spark plug electrode, and the weight, volume and cost of the ignition coil will increase. At the same time, traditional spark plug ignition has no obvious effect on increasing the combustion speed of large-bore engines by increasing the ignition energy. Therefore, there are large technical barriers to speeding up the combustion speed of low-evaporation fuel engines and improving combustion stability.

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