On-road measurement of emissions of reactive nitrogen compounds and greenhouse gases from Euro 6 diesel and natural gas vans using an on-board FTIR

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F17%3A00312217" target="_blank" >RIV/68407700:21220/17:00312217 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

On-road measurement of emissions of reactive nitrogen compounds and greenhouse gases from Euro 6 diesel and natural gas vans using an on-board FTIR

Popis výsledku v původním jazyce

Two automobiles and six vans, half powered by diesel fuel, half by natural gas, have been tested on chassis dynamometer using multiple driving cycles and on the road. An industrial FTIR analyzer was used to measure all gaseous pollutants and a NanoMet3 analyzer to measure the number concentrations of non-volatile particles. Exhaust flow was inferred from engine control unit data. In the lab, the measurements also included traditional instrumentation including particle classifiers. On all diesel vehicles, the emissions of nitrogen oxides (NOx) were relatively high, with a high share of nitrogen dioxide. On some vehicles, NOx were also high during a warm-start type approval cycle (NEDC), suggesting that the disparity between the real world and type approval limits is to be addressed. One van from a rental fleet had excessive emissions of particles, suggesting that the technical condition of the general fleet should be continuously assessed. The emissions of ammonia were negligible. The global warming potential of nitrous oxide was equivalent to several g/km CO2, suggesting that it should be included in assessment of greenhouse gas emissions. Natural gas vehicles, all using port fuel injection spark ignition engines with electronic controls and three-way catalysts, produced relatively low emissions, with nitrogen monoxide and ammonia emissions both on the order of several tens of mg/km, methane emissions corresponding to < 1 g/km CO2, and negligible emissions of N2O, formaldehyde and acetaldehyde. The number of non-volatile particles varied greatly but was generally low except for the defective diesel vehicle. The on-board FTIR has proven to be a useful instrument capable of covering, except for total hydrocarbons, essentially all gases of interest. The optimization of the on-board system for simplicity of installation and operation has allowed, within the given budget and time, to test a relatively large number of vehicles, covering vehicle-to-vehicle variance.

Název v anglickém jazyce

On-road measurement of emissions of reactive nitrogen compounds and greenhouse gases from Euro 6 diesel and natural gas vans using an on-board FTIR

Popis výsledku anglicky

Two automobiles and six vans, half powered by diesel fuel, half by natural gas, have been tested on chassis dynamometer using multiple driving cycles and on the road. An industrial FTIR analyzer was used to measure all gaseous pollutants and a NanoMet3 analyzer to measure the number concentrations of non-volatile particles. Exhaust flow was inferred from engine control unit data. In the lab, the measurements also included traditional instrumentation including particle classifiers. On all diesel vehicles, the emissions of nitrogen oxides (NOx) were relatively high, with a high share of nitrogen dioxide. On some vehicles, NOx were also high during a warm-start type approval cycle (NEDC), suggesting that the disparity between the real world and type approval limits is to be addressed. One van from a rental fleet had excessive emissions of particles, suggesting that the technical condition of the general fleet should be continuously assessed. The emissions of ammonia were negligible. The global warming potential of nitrous oxide was equivalent to several g/km CO2, suggesting that it should be included in assessment of greenhouse gas emissions. Natural gas vehicles, all using port fuel injection spark ignition engines with electronic controls and three-way catalysts, produced relatively low emissions, with nitrogen monoxide and ammonia emissions both on the order of several tens of mg/km, methane emissions corresponding to < 1 g/km CO2, and negligible emissions of N2O, formaldehyde and acetaldehyde. The number of non-volatile particles varied greatly but was generally low except for the defective diesel vehicle. The on-board FTIR has proven to be a useful instrument capable of covering, except for total hydrocarbons, essentially all gases of interest. The optimization of the on-board system for simplicity of installation and operation has allowed, within the given budget and time, to test a relatively large number of vehicles, covering vehicle-to-vehicle variance.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

<a href="/cs/project/LO1311" target="_blank" >LO1311: Rozvoj Centra vozidel udržitelné mobility</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2017

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů