| 摘要 |
PURPOSE:To control generation of unburned product and pale smoke and to reduce noise, by furnishing a main nozzle to inject fuel into a main combustion chamber and a secondary nozzle to inject fuel into a secondary combustion chamber, in a fuel injection nozzle arrangement. CONSTITUTION:A main combustion chamber 2 and a secondary combustion chamber 3 are furnished at the top of a piston 1. In the main combustion chamber is furnished a fuel injection nozzle system 4 which has a main nozzle 13 to inject fuel into the main combustion chamber 2, and a secondary nozzle 11 to inject fuel into the secondary combustion chamber 3 when the main nozzle is closed. A connecting passage is arranged through which the main combustion chamber 2 and the secondary combustion chamber 3 are connected. Thus, ignition performance in the low load engine operation is improved, and pale smoke can be controlled to reduce unburned product. |
