LV2.2 Emissions

LV2.2 Emissions

Multiple Choice

Oxygen makes up approximately how much of the atmosphere?

• 23%

• "24%

• 21%

• 31%

Multiple Select

Air pollution comes from ?

• Factories

• Transportation

• Forests

• Oil refineries

Multiple Choice

Evaporated emissions create?

• CO

• CO2

• HC

• NoX

Multiple Select

A chemically correct AF ratio is also termed?

• Stoichiometric

• Lambda 1

• Pascal

• Zirconium

Multiple Select

An over rich mixture can create

• Cause black smoke

• High fuel consumption

• Strong smell of fuel

• Hot engine

Multiple Select

NoX is formed when the combustion temperature rises above 1300 degrees C. What makes a big difference to the chamber temperature.

• Ignition timing

• Engine load

• Lean fuel mixture

Multiple Choice

NoX is measured in?

• Parts Per Million

• Percentage

• Milligrams

• CCs

Multiple Choice

To create the least amount Hydrocarbons the engine runs?

• Too Rich

• correct

• Too lean

Multiple Select

Running the engine lean can result in

• High combustion temperatures

• Poor performance

• Piston damage

• Poor fuel consumption

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NoX is produced when an engine is under

• Light load

• Warm up

• Heavy load

• Idling

Multiple Choice

The catalytic converter starts to work at?

• 350 + degrees C

• 750 + degrees C

• 150 degrees C

• Ambient Temperature

Multiple Choice

A lean mixture will read

• 300mv

• 200mv

• 5 volts

• 800mv

Multiple Choice

800mv will make the injectors open for

• longer

• the same

• shorter

• stop

Multiple Select

Oxygen sensors are made of

• platinum

• zirconium

• gold

• silver

Multiple Select

Another name for an oxygen sensor is

• Lambda

• O2

• HEGO