Influence of the Temperature over CO2 Emissions (First Results)

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Presentation transcript:

Influence of the Temperature over CO2 Emissions (First Results) WLTP/DTP Zurich 12/04/2011

Test Conditions (1) 3 Vehicles (10 kkm) 2 Test Cycles 3 Temperatures 1 Diesel (D1) 2 Gasoline (G1 & G2) 2 Test Cycles FTP75 NEDC 3 Temperatures 22°C 25°C 15°C WLTP/DTP/12-04-2011

Soaking & Test cell at T ± 2°C Test Conditions (2) Soaking & Test cell at T ± 2°C Type approval CD values at 20°C corrected with test temperature (GTR draft RLD) Influence of T on forces (compared to 20°C) 22°C => ~ +1.0%  +2.5% 25°C => ~ +2.0%  +5.0% 15°C => ~ -2.0%  -5.0% WLTP/DTP/12-04-2011

Results (1) WLTP/DTP/12-04-2011

Results (2) WLTP/DTP/12-04-2011

Results (4) WLTP/DTP/12-04-2011

Results (3) WLTP/DTP/12-04-2011

The first results take us to the following conclusions: No significant influence of the cycle profile Low influence of 15°C (compared to 22/25°C) No significant influence at 25°C compared to 22°C WLTP/DTP/12-04-2011