Directional intake ports in diesel engines are used to （）.

时间：2019-04-15 01:00:20 关键词：ports,in,Directional

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

答案解析

B

举一反三

Diesel engine main and connecting rod precision bearings are made in halvesEach half exceeds one-half the bearing circumference by a small amountThe small amount is termed （）.

The intake valves in a diesel engine are reseated by （）.

Friction engine wear and oil consumption in a diesel engine are directly related to the （）.

It is important that the water （） very often as this can lead to increased deposits.

Directional intake ports in diesel engines are used to （）.

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