A、last part of the exhaust stroke, and the first part of the intake stroke
B、last part of the intake stroke only
C、early part of the injection stroke only
D、early part of the power stroke
更多“Scavenging in a four-stroke/cycle diesel engine occurs during the （）.”相关的问题
A、A.Inefficient scavenging；twice B、B.Inefficient scavenging；1~8 times C、C.Fewer strokes in a circle；twice D、D.Fewer strokes in a circle；1~8 times
A、A.reduce engine horsepower output B、B.aid in silencing the exhaust noise C、C.increase the mean effective pressure D、D.contribute to effective cylinder scavenging
A、during the valve overlap period B、with only the exhaust valve open C、at a pressure below atmospheric D、without cooling the cylinders or pistons
A、scavenging air ports；exhaust ports B、inlet ports；scavenging air ports C、scavenging air ports；inlet ports D、exhaust ports；inlet ports
A、during the valve overlap period B、with only the exhaust valve open C、at a pressure below atmospheric D、without cooling the cylinders or pistons
A、(1) only is correct B、(2) only is correct C、both (1) and (2) are correct D、Neither (1) or (2) are correct
A、produce a scavenging effect in the combustion space B、equalize cylinder and exhaust manifold pressures C、alleviate the difference in valve size between the intake and exhaust D、flush out condensate that collects after each compression stroke
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