There is also now a second port in the top of each cylinder that connects to the new exhaust ports on the manifold.
还有现在的港口第二上方的每个气缸连接到新的排气口上多方面的。
2
Helical port also produces swirl by airflow interaction of valve gap and cylinder wall, so swirl number depends on helical line direction of relevant cylinder center.
螺旋气道通过气门间隙与缸壁的气流相互作用也产生涡流，因此，涡流数取决于相应气缸中心的螺旋线方位。
3
The features of large-diameter cylinder structure and the use of this type of structure in port works both at home and abroad are briefly described in this paper.