單項選擇題

Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?（）

A.Bypass the after-cooler to operate at speed
B.Run at reduced speed until the cooler can be repaired or renewed
C.Switch to diesel fuel and run at full speed
D.Nothing need to be done due to the low heating value of heavy fuel

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單項選擇題

If cooling water flow through the after-cooler is interrupted,the power output of a turbocharged diesel engine will drop because the （）

A.turbocharger will stall
B.density of the air charge will decrease
C.scavenge effect will increase
D.exhaust pressure will increase

單項選擇題

The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by（）

A.the firing pressure in the cylinder
B.a metering helix inside the pump
C.varying the physical length of the plunger stroke
D.varying the clearance between the injector cam and the injector rocker arm

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Which of the following procedures should be carried out to permit the use of a crosshead engine with an inoperable after-cooler?（）

你可能感興趣的試題

If cooling water flow through the after-cooler is interrupted,the power output of a turbocharged diesel engine will drop because the （）

The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by（）

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