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Real World Cold Start Emissions from a Diesel Vehicle University of Leeds
- Format:
- Conference/Event
- Author/Creator:
- Windeatt, Windeatt, author.
- Conference Name:
- SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)
- Language:
- English
- Physical Description:
- 1 online resource
- Place of Publication:
- Warrendale, PA SAE International 2012
- Summary:
- This study uses on-board measurement systems to analyzeemissions from a diesel engine vehicle during the cold startperiod. An in-vehicle FTIR (Fourier Transform Inferred)spectrometer and a Horiba on-board measurement system (OBS-1300)were installed on a EURO3 emission-compliant 1.8 TDCi diesel van,in order to measure the emissions. Both regulated and non-regulatedemissions were measured, along with an analysis of the NO/NO₂split. A VBOX GPS system was used to log coordinates and road speedfor driving parameters and emission analysis. Thermal couples wereinstalled along the exhaust system to measure the temperatures ofexhaust gases during cold start. The real-time fuel consumption wasmeasured. The study also looks at the influence of velocity onemissions of hydrocarbons (HCs) and NOx.The cold start period of an SI-engine-powered vehicle, wastypically around 200 seconds in urban driving conditions. Theresults of this research show that the cold start period for thediesel engine is shorter than that for the SI engine. Emissions ofCO, NO, NO₂, formaldehyde and total hydrocarbons (THCs) were higherduring the cold start period than the warmed up period. Themagnitude of increase during the cold start was smaller than SIengines. NOx emissions under real-world driving conditions werewell above the legislated values. The study of velocity andemissions also found a correlation between emissions of HCs and NOwith vehicle velocity, showing a trend of higher speed alongsidehigher emissions
- Notes:
- Vendor supplied data
- Publisher Number:
- 2012-01-1075
- Access Restriction:
- Restricted for use by site license
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