Engine exhaust emissions during real
driving conditions

The term Real Driving Emissions (RDE) describes the "real-life" emissions output from cars in everyday usage. RDE does not replace the WLTP laboratory test, but complements it and will ensure that cars produce lower emissions also under on-road conditions.

RDE Driving Conditions
  • Cold start
  • Year-round temperatures
  • Wide speed range (low-speed on urban roads up to high-speed on motorways)
  • High transient phases ( e.g. tip-in)

LaVision offers measurement techniques for engine combustion and exhaust analysis especially for transient conditions in real engines.

EngineMaster inspex recording of first four cycles of a cold start with visible pool fire from piston and wall wetting.

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