Class D -7- Engine - Level 2 | Führerschein Österreich

Class D -7- Engine - Level 2

2 of 3 Levels

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Category: Class D -7- Engine - Level 2

You are driving a bus with a diesel engine and notice that blue smoke is coming out of the exhaust. What causes can this have?

The cylinder head gasket could have become defective. Coolant is entering the combustion chamber

The main engine gasket could have become defective. Engine oil is entering the combustion chamber

The main engine gasket could have become defective. Diesel fuel is entering the combustion chamber

The oil scraper rings could have become defective. Engine oil is entering the combustion chamber

2 / 15

Category: Class D -7- Engine - Level 2

How can you recognize malfunctions in the cooling system of your bus engine while driving?

By the remote thermometer

By a warning buzzer

By a corresponding display on the on-board computer

By the failure of the air conditioning

3 / 15

Category: Class D -7- Engine - Level 2

You are driving a bus with a diesel engine and notice that black smoke is coming out of the exhaust. What causes can this have?

The oil scraper rings could have become defective. Engine oil is entering the combustion chamber

The cylinder head gasket could have become defective. Coolant is entering the combustion chamber

The engine air filter could be clogged. There is not enough air available for proper combustion of the fuel

The electronic control of fuel injection could be malfunctioning. More fuel is being injected than can be properly burned

4 / 15

Category: Class D -7- Engine - Level 2

You are driving a bus with a diesel engine and notice that black smoke is coming out of the exhaust. How do you behave?

I observe the indicators for engine air filter contamination

I stop as soon as possible at a suitable location and turn off the engine

I observe the indicators for malfunctions in the electronic engine control

After stopping, I look up in the operating manual of the bus what rules of conduct are provided for this case

5 / 15

Category: Class D -7- Engine - Level 2

Which fluids of a bus require antifreeze when cold?

The washer fluid of the windshield washer system

The transmission oil

The battery fluid

The coolant of the engine

6 / 15

Category: Class D -7- Engine - Level 2

You are driving a bus with a diesel engine in midsummer and notice that white smoke is coming out of the exhaust. What causes can this have?

The main engine gasket could have become defective. Engine oil is entering the combustion chamber

The main engine gasket could have become defective. Diesel fuel is entering the combustion chamber

The oil scraper rings could have become defective. Engine oil is entering the combustion chamber

The cylinder head gasket could have become defective. Coolant is entering the combustion chamber

7 / 15

Category: Class D -7- Engine - Level 2

You need to top up engine oil on your bus. What do you observe?

I may top up any commercially available engine oil as long as it is suitable for diesel engines

I make sure that no engine oil gets into the ground or drainage system

I make sure not to fill in too much engine oil

I only use engine oil with the specification listed in the operating manual of the bus

8 / 15

Category: Class D -7- Engine - Level 2

Your bus is equipped with an SCR system to reduce pollutant emissions. Which operating fluid is necessary for proper operation of this system?

AdYellow

AdGreen

AdBlue

AdRed

9 / 15

Category: Class D -7- Engine - Level 2

Which of the following technical devices reduce pollutant and particle emissions in diesel engines?

Exhaust gas recirculation (EGR)

Selective catalytic reduction (SCR)

Diesel particulate filters

The glow plug spiral

10 / 15

Category: Class D -7- Engine - Level 2

You need to top up antifreeze for the engine coolant on your bus. What do you observe?

I wear safety glasses and protective gloves because antifreeze is toxic

I must not mix blue or green colored antifreeze with red colored antifreeze, because otherwise damage to the cooling system could occur

I make sure that no antifreeze gets into the ground or drainage system, because antifreeze is toxic

I only use antifreeze with the specification listed in the operating manual of the bus, because otherwise damage to the cooling system could occur

11 / 15

Category: Class D -7- Engine - Level 2

Your bus is equipped with a tank for AdBlue. How can you recognize that AdBlue needs to be refilled?

By a separate fuel gauge for AdBlue on the dashboard

By the blue exhaust smoke

By the AdBlue pressure gauge on the dashboard

By a warning light

12 / 15

Category: Class D -7- Engine - Level 2

You are driving a bus with a diesel engine in midsummer and notice that white smoke is coming out of the exhaust. How should you behave?

After stopping, I look up in the operating manual of the bus what rules of conduct are provided for this case

I stop as soon as possible at a suitable location

I continue until the end of the working day

I turn off the engine

13 / 15

Category: Class D -7- Engine - Level 2

You are driving a bus with a diesel engine and notice that blue smoke is coming out of the exhaust. How should you behave?

I look up in the operating manual of the bus what rules of conduct are provided for this case

I stop as soon as possible at a suitable location and turn off the engine

I continue until the end of the working day

I observe the indicators for engine lubrication oil pressure

14 / 15

Category: Class D -7- Engine - Level 2

What do you check on the cooling system of your bus engine?

The speed of the radiator fan with the tachometer

The speed of the coolant pump with the tachometer

The coolant temperature with the remote thermometer

The coolant level in the expansion tank

15 / 15

Category: Class D -7- Engine - Level 2

Your bus is equipped with a tank for AdBlue. What problems must you expect depending on the bus if you do not refill AdBlue in time?

The engine can be severely restricted in its power by the electronic control

The engine stalls immediately

The engine can no longer be started after switching off

The diesel particulate filter is no longer supplied with exhaust gas

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Class D -7- Engine – Level 2