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Automotive vocabulary · Engine and Fuel Systems

Emissions

Meaning in automotive, with examples

/ɪˈmɪʃənz/nounCore term

In automotive, emissions means: The gases and particles a vehicle releases, mainly from the exhaust, such as CO2, NOx and soot. Their limits are set by regulations such as the Euro 6 standard.

In Turkish: emisyonlar, egzoz emisyonları, salınım

How it is used

Usually plural. Engineers work on emissions compliance and emissions testing; regulators set emissions limits; cars must pass an emissions test at periodic inspection. CO2 emissions are given in g/km.

Example sentences

  1. The new engine meets Euro 6 emissions limits in real-driving tests as well as in the lab.

  2. The car failed the emissions test because of a faulty oxygen sensor.

Common collocations

  • emissions standards
  • CO2 emissions
  • emissions test
  • tailpipe emissions
  • reduce emissions
  • catalytic converterA part of the exhaust system that uses precious metals such as platinum, palladium and rhodium to turn harmful gases (CO, HC and NOx) into less harmful ones before they leave the car.
  • fuel economyHow much fuel a vehicle uses to travel a given distance. In Europe and Turkey it is given in liters per 100 km; in the US it is given in miles per gallon (mpg).
  • internal combustion engineAn engine that burns fuel and air inside its cylinders, so the pressure of the hot gas pushes the pistons. Petrol and diesel car engines are both of this type.
  • homologationThe official approval showing that a vehicle type or component meets the legal technical and safety requirements of a market, so it can be sold and registered there.

This word in other fields

The same English word can have a different meaning in another field:

More terms: Engine and Fuel Systems

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