EMISSIONS BY EVAPORATION: A NEW SHED TO COMPLY WITH THE NEW REGULATIONS
The UTAC CERAM Group has recently commissioned its new SHED (Sealed Housing for Evaporative Emissions Determination) enclosure at its Linas-Montlhéry site in order to measure the evaporative hydrocarbon emissions from vehicles. Representing an investment of more than € 1.2 million, this equipment makes it possible to meet the new specific measurement protocols imposed by the new emissions regulations, linked to WLTP certification cycles. The new SHED also allows UTAC CERAM to perform measurements for the approval of vehicles for markets outside of Europe, such as Japan and China.
Inside the SHED enclosure, the temperature is controlled over a range between 15 and 40 ° C. The measurement of hydrocarbons is carried out using an HFID type analyzer. The evaporation tests have a duration of 48 hours and reproduce two cases of emissions by evaporation:
- Measuring the vehicle's hydrocarbon emissions immediately after stopping the engine (example.g. : parking the vehicle in an underground car park after driving): Where the test determines evaporative losses by hot impregnation (1 hour at a temperature between 23 and 31 ° C) ,
- Measuring the vehicle’s hydrocarbon emissions for a period of 48 hours with a temperature profile varying from 20 to 35 ° C (example: parking the vehicle in direct sunlight): Where the test determines the daytime loss from the test vehicle.