| 摘要 |
<p>The engine cylinder head is fitted with fuel injection offset from the throat area in a conical combustion chamber. To ensure uniform mixing and combustion, the angle (gamma) between the axes (15,16) of a pair of adjacent injection jets (10,11) directed onto the chamber and projected onto the cross-sectional plane of the chamber (4) should be 1.8 to 2.2 times the angle (delta) formed by any pair of adjacent jet axes directed onto the opposite chamber wall (6,4). As air whirls inside the chamber, fuel is injected through the channel system (10-14) along axes (15-19) to contact the wall at arrowed points (20-24). The radial air flow intersects the fuel jets at given angles move atomised fuel to the chamber centre. The jet tips remove combustion products by sweeping them round to the throat (7). In the expansion phase the fuel vapours are deflected towards the unused chamber air on the opposite side so that the air supply is totally utilised.</p> |
