Directional intake ports in diesel engines are used to （）.<br>A:reduce air charge turbulence<br>B:induce air swirl<br>C:deflect hot combustion gas away from the valves<br>D:oppose the effects of piston induced squish

Directional intake ports in diesel engines are used to （）.
A:reduce air charge turbulence
B:induce air swirl
C:deflect hot combustion gas away from the valves
D:oppose the effects of piston induced squish

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