1. Velimir Petrović, Institute IMR, Beograd, Serbia
2. Branka Grozdani, Institute IMR, Beograd, Serbia
This paper highlights a problem currently being experienced by new passenger cars and heavy-duty trucks and buses: Despite meeting more stringent regulatory standards for exhaust emissions during type approval, many vehicles have significantly elevated emissions of nitrogen oxides (NOx) during in-use driving, particularly when operating in urban traffic. In some cases, actual real driving emission (RDE) levels may be as high as or higher than those from much older vehicles with engines certified to more lenient emission standards. These high “off-cycle” NOx emissions threaten efforts to improve ambient air quality in many European cities. Finally, the paper analyzes the possibilities of control of these “off-cycle” emissions and using portable emission measurement system (PEMS) for testing vehicles under real driving conditions, as well as the formation of a real driving cycle (RDC) for future emission control after in 2017.
Ključne reči :
Tematska oblast:
Automotive and Traffic Engineering
Datum:
12.04.2015.
