| 摘要 |
PURPOSE:To lower the concentration of oxygen in an exhaust gas and enable particulate coal or the like to be discharged safely, by a method wherein the quantity of intake air is reduced by throttling an intake valve for an engine. CONSTITUTION:When discharging particulate coal from a particulate material containing tank 2, a dump cylinder 3 is stretched to tilt the tank 2, thereafter ON-OFF valves 15, 23 are opened, while ON-OFF valves 12, 27 are closed whereby the exhaust gas from the engine 5 is introuduced into a discharging part 4 through an exhaust pipe 6, an introducing pipe 7 and a primary air supplying pipe 8, and the particulate coal is mixed into the exhaust gas and is discharged to the exterior. At this time, since the air to be taken into the engine 5 through an intake pipe 10 is throttled by passing through small holes 14 formed in a main body 13, the quantity of air taken in per unit time is reduced, so that the fuel-air ratio is increased, and oxygen contained in the air is mush consumed at the time of combustion. Accordingly, the concentration of oxygen in the exhaust gas is lowered, and the particulate coal can be discharged safely. |
