| 摘要 |
<p>The centrally ridged roof (11) of the combustion chamber (2) has the spark-plug (17) at the mid-point (12) of the ridge. The piston top (13,14) is similarly formed, to maintain a high compression ratio, with a bowl-shaped, flat-bottomed offset recess (15) having its greater axis parallel to the ridge. Two inlet passages (5,6), entering generally above the recess, are cross-oriented. The injector (16) is located between the inlets, its axis inclined, at about 45 and 15-20 degrees respectively, with respect to the plane of the cylinder head joint and a vertical plane orthogonal to the roof ridge. The exhaust passages (9) are placed on opposite side of the ridge. In a variant, the bowl recess has a central bulge at one end modifying the flow.</p> |
