论文部分内容阅读
介绍瞄准客车和轻型货车市场的一台成功的低排放高速直喷式柴油机所需的设计考虑。为获得满意的性能,同时具有低排放和低噪声,还是以4气门、喷油器布置在中央的结构为好。虽然一般的自然吸气式发动机适用于某些货车,但为了得到令人满意的功率和排放指标,必需采取增压和中冷。研制中需要优化燃烧和进排气系统,并对汽车的噪声和振动特性予以充分关注。
Describe the design considerations for a successful low-emission, high-speed, direct-injection diesel engine aimed at the passenger and light goods vehicle markets. To obtain satisfactory performance, with low emissions and low noise at the same time, or with 4 valves, injector arrangement in the central structure as well. While a typical naturally aspirated engine is suitable for some trucks, it is necessary to take charge and cool in order to obtain satisfactory power and emission specifications. In the course of development, it is necessary to optimize the combustion and intake and exhaust system, and pay full attention to the noise and vibration characteristics of the vehicle.