The invention relates to a vortex chamber
combustion system utilizing umbrella-shaped spraying, which belongs to the fields of formation and
combustion of engine mixing gases. The vortex chamber
combustion system utilizing an oil
nozzle with an umbrella-shaped spraying has the structural characteristics that the center line of the oil
nozzle with an umbrella-shaped spraying way is superposed withthe center line of a main passage so that the air which flows into a vortex chamber from a compression
stroke via the main passage turns back along the wall surface of the vortex chamber to form vortex after reaching the vicinity of the head part of the oil
nozzle; the direction of the vortex is just along the diffused direction of the umbrella-shaped spraying so as to accelerate oil and gas mixture and improve the combustion. Because the characteristics of short penetrating distance, even circumferential distribution and high
granulation of the umbrella-shaped spraying are reasonably utilized, the favorable mixture and combustion can be obtained at lower vortex strength, thereby reducing heat dissipation loss and throttling loss and further improving the heat efficiency of an engine. Experiments on a single-cylinder 195
diesel engine indicate that the power is improved by 10 percent, the
oil consumption is reduced by 8 percent, the
discharge of
NOx is reduced by 10 percent and the
discharge of
soot is reduced by 20 percent after the vortex chamber
combustion system utilizing the oil nozzle with a umbrella-shaped spraying way is adopted.