| 摘要 |
PURPOSE:To improve a mixing characteristic of air and fuel by a method wherein a plurality of pins are installed near a fuel nozzle. CONSTITUTION:A fuel distributor 6 positioned concentrically around within an air neck part 2 is provided with a fuel nozzle 5 on a periphery near its extremity end and at the same time a plurality of pins 9 are arranged near a fuel nozzle 5. The pins 9 are fixed to the fuel nozzle 5 under an equal pitch of a half pitch displaced. Fuel gas 10 flowed from the nozzle 5 into the air neck 2 is passed through an air valve 3, mixed with air 11 flowed into the air neck part 2 and then an explosion combustion is started under an action of an ignition plug 12. During an intake stroke, a high speed air flow in the air neck part 2 is further struck against a pin 9 to cause a turbulence flow to be promoted together with eddy flow. Since the fuel gas is flowed into the excessive turbulence flow, a better mixing of the air and the fuel gas is made and a uniform mixing is further improved to a mixing degree of the mixture.
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