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Il test delle emissioni dei veicoli prevede che un'automobile esegua una serie di rigorose valutazioni per conoscere il consumo di carburante e la quantità di gas inquinanti che produce in diverse condizioni d’uso, in base ai requisiti e agli standard di misurazione delle emissioni. A seconda della tecnologia e dei requisiti normativi applicabili, come il WLTP e il RDE, i test stessi possono variare. La valutazione delle emissioni dei veicoli di solito comprende test delle prestazioni complessive, di efficienza del motore, l'efficacia dei convertitori catalitici, le trappole di particelle e altri dispositivi di controllo delle emissioni e la risposta del sistema a carburanti alternativi.
Negli ultimi anni è cresciuta la preoccupazione che i risultati dei test sulle emissioni dei veicoli su strada nel "mondo reale" differiscano considerevolmente dai risultati dei test sulle emissioni condotti in laboratorio e che non esistano procedure di prova delle emissioni universali, standardizzate e armonizzate. Pertanto, l'ONU e l'UE hanno introdotto nuovi metodi di prova delle emissioni e dell'efficienza del carburante come la RDE - procedura di prova delle emissioni in condizioni di guida reali e procedure di prova dei veicoli leggeri armonizzati a livello mondiale (WLTP) per fornire risultati più trasparenti.
Guarda il nostro video per saperne di più sui requisiti WLTP e RDE e su come TÜV SÜD garantisce procedure di prova delle emissioni armonizzate all'interno della sua rete globale di laboratori, per fornire risultati di prova accettati nei vari paesi.
The Worldwide Harmonized Light Vehicles Test Procedure (WLTP), which is applicable across the EU as well as China, Japan, India, Korea and other countries, mandates the use of harmonised test procedures that can evaluate emissions and fuel efficiency in a consistently repeatable and reproducible manner. Specific assessments under the WLTP include exhaust gases concentrations, particulate mass and particulate number, CO2 emissions, fuel and electrical energy consumption and electrical operating range. Testing cycles are generally determined by vehicle class (Class 1, 2 or 3), which are defined by the vehicle’s power/weight ratio. The WLTP includes several changes from existing requirements under the EU’s New European Driving Cycle (NEDC) procedure.
The European Union’s Real Driving Emissions (RDE) regulations require the use of a portable emissions measuring system (PEMS) attached to the vehicle to measure vehicle pollutant emissions under actual driving conditions. RDE test results are then correlated with emissions results obtained in the testing laboratory. Testing under the EU’s RDE is now required and, since 1 September 2017, type approval requirements also consider emissions levels identified during RDE testing. As of that date, vehicles that fail RDE testing cannot be placed on the market.
Vehicle emissions testing offers vehicle manufacturers multiple benefits, such as:
Compliance/conformity with emissions regulations and standards to speed up your global market access, including:
The UN’s Worldwide Harmonised Light Vehicle Test Procedure (WLTP)
Determining the best approach for emission reduction by identifying potential innovative technical solutions through early testing in the development process
Ensuring vehicle systems and parts perform in accordance with design specification by post-production testing
Providing complete Conformity of Production (CoP) documentation
Strengthen your brand reputation by reducing CO2 emission, tackle climate change and providing your customer with more environmentally friendly vehicles to boost sales
TÜV SÜD is one of the world’s leading vehicle testing and certification providers with accredited state-of-the-art testing laboratories near all major car producing hubs. Each testing facility is equipped to conduct all essential emissions and fuel consumption tests required for passenger and commercial vehicles and motorcycles in accordance with national regulations, international standards and industry requirements, including RDE and WLTP regulations.
Since the introduction of RDE and the WLTP test, TÜV SÜD has introduced a ‘round robin’ programme to ensure that our multiple laboratories within our TÜV SÜD network, including in China, South Korea and Taiwan, generate consistent results in the different locations while testing the same vehicle according to WLTP and RDE regulations. With the results of the TÜV SÜD round robin tests, we can offer worldwide harmonised fuel efficiency and vehicle emissions testing procedures and ease market access for global manufacturers.
Our TÜV SÜD fuel efficiency and vehicle emissions testing services include:
Correlation tests using portable measuring equipment (PEMS) and real driving emission test procedures, consistent with the requirements of the EU’s RDE regulations to evaluate actual in-use performance.
Testing to assess emissions levels and fuel economy for light-duty vehicles and engines under various operating conditions in accordance with European Union requirements.
Testing and certification of new vehicle types since 2017 for CO2 and exhaust emissions.
Testing in accordance with China’s national emissions regulations.
This includes vehicle measurement on the road, route digitisation and validation of speed profile, and real-life driving simulation under reproducible conditions.
Evaluates the levels of carbon dioxide (CO2) from automobile engines.
Verifies emissions and fuel economy performance for use in CoP documentation.
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