| 摘要 |
At least three intake port channels 112, 113 and 122 per cylinder introduce gases of different composition into the combustion chamber 102. The channel 122 supplies a fuel and air mixture, the channel 112 supplies predominantly air and the channel 113 supplies EGR gases. The channels and the combustion chamber 102 are such as to create within the combustion chamber a stratified charge comprising three distinct regions made up of gases entering by way of the three channels. One of the regions containing air or EGR gases serves to separate the region containing the fuel and air mixture from the other of the regions containing EGR gases or air. The channels, the passages supplying the channels and the valved ports opening to the combustion chamber may take various forms (Figs. 2 to 6) to provide different forms of stratification within the combustion chamber. |
