| 摘要 |
PURPOSE:To attempt compatibility between promotion of fuel carburetion/ atomization caused by fuel injection to high flow speed intake air, and improvement of filling efficiency caused by high level maintenance of average flow speed, and also achieve improvement of scavenging property or the like simultaneously, in the air intake device of a fuel injection type engine provided with an air intake passage having a curved part. CONSTITUTION:The air intake device of an engine is provided in such constitution that an injector 25 is arranged in an air intake passage 12 having a curved part 13, and also an appropriate quantity of additional gas G is supplied into the intake passage 12. The injection hole 26 of the injector 25 is opened to the curved part 13 of the intake passage 12, or to the immediately downstream position of the curved part 13, and also on the wall surface 13a on the outer circumference side of the curved part 13. On the other hand, the injection part 36 of aditional gas G is opened on the wall surface 13b on the inner circumference side of the curved part 13. |
