| 摘要 |
The invention relates to an air distributor (10) comprising a cylindrical tubular body (24) which is provided with connecting channels (45, 46) for supplying the cylinders (15, 16, 17, 18) of an internal combustion engine, the branches (37 to 44) of which open in an aligned manner along a generatrix (GA) of the tubular body. The tubular body (24) extends upstream into the branches (37, 38) of a 180 ° elbow (30) which opens at an air inlet (32), said elbow (30) being inclined at an angle a in relation to the diametral plane of the tubular body (24) containing generatrix GA. In addition, the inventive distributor includes a ramp (48) for partially throttling the air flow area of the main body in order to reduce the drop in swirl in the first distributed cylinder (15) induced by the architecture of the inclined elbow distributor, said ramp being provided upstream close to the branches (37, 38) of the connecting channels (45, 46) of said first distributed cylinder (15) on the side of the elbow (30) inclination. The aforementioned ramp (48) takes the form of an asymmetrical wheel ramp having gently-and steeply-inclined upstream (50) and downstream (52) faces. The distributor (10) is mounted to the intake face (12) of the cylinder head (14) of a diesel engine with two intake ducts (19, 20) per cylinder (15).
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