| 摘要 |
PURPOSE:To restrain generation of NOX and contrive improvement of output as well as reduction of fuel consumption rate by a method wherein a fuel injection nozzle is provided with two injection ports and the injecting directions of the injection ports are designed so as to have specified directions. CONSTITUTION:The fuel injection nozzle 4 is arranged at a position eccentric with respect to the center line of a substantially spherical combustion chamber 2 formed at the top surface of a piston 1. The fuel injection nozzle 4 is provided with two injection ports and the injection direction 5 of one injection port is designed so as to be a substantially tangential line with respect to the wall surface of the combustion chamber 2 while the injecting direction 6 of the other injecting port is designed so as to be a direction passing the vicinity of the center line of the combustion chamber 2. The fuel in the injecting direction 6 is evaporated in the inner space of the combustion chamber 2 and is ignited, therefore, the delay of ignition may be shortened. The fuel in the injection direction 5 is spread over the wall surface like a film and the evaporation thereof is promoted, therefore, ignition and combustion thereof may be effected rapidly. In such manner, the improvement of the output as well as the fuel consumption rate may be contrived under restraining the generation of NOX. |
