| 摘要 |
<p>The diesel engine includes a first combustion chamber (7) defined by a recess in a piston top (8) and a projection (12) formed in the first combustion chamber (7). The projection (12) stands on a bottom wall (10) of the first combustion chamber (7). A second combustion chamber (13) is formed inside the projection (12). A fuel introduction opening (14) is formed at a top of the projection (12) to allow fuel to come into the second combustion chamber (13) and combustion gas exit openings (15) are formed in a side of the projection (12) to allow gases produced upon combustion in the second combustion chamber (13) to go out of the second combustion chamber (13) and enter the first combustion chamber (7). A fuel injection nozzle (16) injects fuel into the first combustion chamber (7) before the top dead center of the piston (5). Swirl and squish are produced in the first combustion chamber (7) and make turbulence of fuel and air in the first combustion chamber (7). Before the swirl and squish are attenuated, the injection nozzle (16) also spouts the fuel into the second combustion chamber (13) to cause another combustion in the second combustion chamber (13). Gases produced upon the combustion in the second combustion chamber (13) enter the first combustion chamber (7) to help and maintain the turbulence in the first combustion chamber (7). Therefore, the turbulence is maintained throughout the combustion process in the first combustion chamber (7). <IMAGE></p> |
