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what is an egrs job

• Enhance engine performance by recirculating exhaust gas back into the combustion chamber.
• Improve fuel efficiency by recirculating exhaust gas back into the combustion chamber.
• Increase carbon dioxide emissions by recirculating exhaust gas back into the combustion chamber.
• Reduce nitrogen oxide emissions by recirculating exhaust gas back into the combustion chamber.

what does a catalytic convertor try to prevent

• Harmful pollutants in vehicle exhaust gases
• Minimizing vehicle emissions
• Increasing engine performance
• Reducing fuel efficiency

what percentage can adblue reduce emissions up to

what is a evap system

• The evap system is a system that increases fuel efficiency
• The evap system is a system that regulates tire pressure
• The evap system is a system that controls engine temperature
• The evap system is a system that prevents fuel vapors from escaping into the atmosphere.

what does a dpf remove

• soot or diesel particulate matter
• engine oil
• exhaust gases
• dust or dirt particles

what is the difference between open loop and closed loop 02 sensors

• Open loop O2 sensors are used in newer vehicles, while closed loop O2 sensors are used in older vehicles
• Open loop O2 sensors adjust the air-fuel mixture, while closed loop O2 sensors do not adjust the air-fuel mixture
• Open loop O2 sensors provide feedback to the ECU, while closed loop O2 sensors do not provide feedback
• Open loop O2 sensors do not provide feedback to the ECU, while closed loop O2 sensors do provide feedback to the ECU for adjusting the air-fuel mixture.

what is the main purpose of a gasoline particulate filter

• To reduce engine noise
• To trap and remove harmful particulate matter from exhaust gases
• To increase fuel efficiency
• To improve tire traction

adblue is in what type of engines

• Petrol engines
• Electric engines
• Diesel engines
• Hybrid engines

what reduces the sound coming from the tailpipe

• Muffler or resonator
• Exhaust pipe
• Silencer
• Catalytic converter

how many euro emission groups are there

• 6
• 10
• 8
• 4