In order to maintain the charge air

单选题 In order to maintain the charge air temperature we should control ____

A、 the coolant inlet temperature coming from the first stage cooler

B、 the coolant flow coming from the second stage cooler

C、 the coolant outlet temperature coning from the second stage cooler

D、 the coolant flow coming from the first stage cooler

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单选题 The cleaning water should not contain any additives, because____

A、 they may delay build-up of dirt

B、 they might remain on the blades of the compressor

C、 they may be forced to the compressor inlet

D、 they are not good solvents

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单选题 Which of the following statements can be used to clean the compressor with the engine running?

A、 Water droplets

B、Water with additives.

C、Charge air.

D、 Hard crust.

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单选题 According to the passage, the valve drive mechanism does not include____

A、tappet rollers

B、 push rods

C、nodular cast iron

D、yokes and guide pins

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单选题 According to the passage, the best time to adjust the valve clearance is____

A、 before the engine is started

B、 when the engine is running

C、after the engine has just been stopped

D、 when something has gone wrong with the engine

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单选题 To close valves tightly, which clearance should be inspected according to the maintenance schedule?

A、The one between the cam and the tappet roller.

B、The one between the push rods and the ball joints.

C、 The one between the rocker arms and the yoke.

D、The one between two tubular push rods.

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单选题 What principal is used in this method of cleaning?

A、The cleanser solves the deposits.

B、The cleanser melts the deposits.

C、The cleanser beats the deposits mechanically.

D、The high pressure of the cleanser removes the deposits.

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单选题 Which of the following statements is NOT correct?

A、The compressor needs regular cleaning:

B、Periodical cleaning of the compressor contributes to reducing build-up of dirt.

C、It’s not necessary to dismantle the turbocharger if periodical cleaning of the compressor is performed.

D、 Additives should better be avoided during the cleaning process

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单选题 The roller and the tappet assembly are lubricated by means of____

A、the main lube system

B、 the secondary oil system

C、the special pumping system

D、 the turbine oil system

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