| 摘要 |
<p>The wall (18) has a circumferential array of primary air holes (32) and a circumferential row of dilution holes (34), and an orifice (48) formed upstream of the dilution holes for passing a spark plug. Two planes (56, 58) passing through a revolution axis of the wall are tangent to the orifice, and define a plug passage region (60) devoid of a primary port, where two regions of circumferential row of primary air holes respectively located upstream of a dilution hole (76) are located away from one of the planes along the row of dilution holes in opposite directions (64, 74) to the other plane.</p> |
