Class D -7- Engine - Level 1 | Führerschein Österreich

Class D -7- Engine - Level 1

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Category: Class D -7- Engine - Level 1

You are refueling a bus with diesel fuel. What do you pay attention to?

That I should wear suitable gloves

That no diesel fuel gets into the drainage system

That no diesel fuel gets into the ground

That no winter diesel is filled in summer

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Category: Class D -7- Engine - Level 1

What is the purpose of the exhaust gas turbocharger in a diesel engine?

To increase maximum engine power

To reduce coolant temperature

To reduce oil consumption

To increase torque

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Category: Class D -7- Engine - Level 1

What happens in the first working stroke of a diesel engine?

Pure air is drawn in

Diesel fuel is drawn in

A mixture of air and diesel fuel is drawn in

A mixture of air and gasoline fuel is drawn in

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Category: Class D -7- Engine - Level 1

What happens in the second working stroke of a diesel engine?

The air drawn into the engine cylinder is strongly compressed and thereby heats up to several hundred degrees

The exhaust gases produced from burning gasoline fuel are expelled into the exhaust

The exhaust gases produced from burning diesel fuel are expelled into the exhaust

The air drawn into the engine cylinder is strongly compressed and thereby cools down

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Category: Class D -7- Engine - Level 1

You want to refuel your bus with biodiesel fuel. Are you allowed to do this?

No, definitely not

Yes, if the bus engine is also suitable for AdBlue

Yes, if the bus is not older than 10 years

Yes, if the bus engine is approved for it

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Category: Class D -7- Engine - Level 1

The diesel engine of your bus is equipped with a Common-Rail injection system. How does this system basically work?

A mechanical pump element supplies each cylinder with diesel fuel independently of the other cylinders of the engine

An electronic control unit operated by the accelerator pedal controls the injectors

A high-pressure pump constantly maintains high fuel pressure in the distribution rail of the injection system

Injectors as injection nozzles at each cylinder are electrically controlled to precisely inject diesel fuel in the desired amount at the desired time of combustion

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Category: Class D -7- Engine - Level 1

What is the purpose of the charge air cooler in a diesel engine?

To increase maximum engine power

To reduce coolant temperature

To reduce the temperature of the engine oil

To reduce the temperature of the air drawn into the engine

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Category: Class D -7- Engine - Level 1

In which components of a bus are lubricating oils necessary?

In the drive shaft

In the gearbox

In the differential

In the engine

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Category: Class D -7- Engine - Level 1

What happens in the third working stroke of a diesel engine?

The exhaust gases produced from burning gasoline fuel are expelled into the exhaust for combustion

The diesel fuel injected into the engine cylinder ignites there on the spark plug and burns

Diesel fuel is injected into the engine cylinder by an injection nozzle

The diesel fuel injected into the engine cylinder ignites there on the hot air and burns

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Category: Class D -7- Engine - Level 1

What tasks does the injection system of a diesel engine have?

To ensure adequate engine lubrication

To inject the correct amount of fuel at the correct time into the engine cylinders

To ensure adequate engine cooling

To limit the idle and maximum speed of the engine

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Category: Class D -7- Engine - Level 1

What are the main differences between summer and winter diesel?

Winter diesel prevents the engine from freezing down to -40° Celsius

Winter diesel is burned particularly low-emission in the engine by adding AdBlue

Winter diesel receives additives at the refinery. This makes it particularly ignitable down to -30° Celsius, which facilitates cold starting

Winter diesel receives additives at the refinery. This keeps it liquid enough down to -20° Celsius that the fuel filters do not clog

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Category: Class D -7- Engine - Level 1

How can you recognize that biodiesel fuel is being dispensed at a fuel pump?

By the green color of the nozzle

By a label. In a square there is a "B" followed by a number

By the label "AdBio"

By a label. In a circle there is an "E" followed by a number

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Category: Class D -7- Engine - Level 1

What are the main differences between diesel and gasoline engines?

The type of fuel used

The number of working strokes

The size of the compression ratio

The type of ignition

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Category: Class D -7- Engine - Level 1

You are refueling a bus with diesel fuel. Why should you wear suitable gloves?

Because diesel fuel is harmful to health

Because diesel fuel adheres to the skin

Because diesel fuel is easily water-soluble

Because diesel fuel has a strong smell

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Category: Class D -7- Engine - Level 1

What consequences can be expected if you use summer diesel at low outdoor temperatures?

The engine can stall immediately after starting

The engine can run with greatly reduced power output

The engine will not reach operating temperature

The engine will produce high pollutant emissions

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Class D -7- Engine – Level 1