RDE-compliant PEMS Testing of a Euro 6d-TEMP Passenger Car at Two Ambient Temperatures with a Focus on the Cold Start Effect BOSMAL Automotive R&D Institute Limited

Format:

Book

Conference/Event

Author/Creator:

Bielaczyc, Piotr, author.

Contributor:

Merkisz, Jerzy

Pielecha, Jacek

Woodburn, Joseph

Conference Name:

WCX SAE World Congress Experience (2020-04-21 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

European Union RDE (real driving emissions) legislation requires that new vehicles be subjected to emissions tests on public roads. Performing emissions testing outside a laboratory setting immediately raises the question of the impact of ambient conditions especially temperature on the results. In the spirit of RDE legislation, a wide range of ambient temperatures are permissible, with mathematical moderation (correction) of the results only permissible for very high and very low ambient temperatures. Within the standard range of temperatures, no correction for temperature is applied to emissions results and the applicable emissions limits have to be met. Given the well-known link between the thermal state of an engine and its emissions following cold start, ambient temperature can be of great importance in determining whether a vehicle meets emissions requirements during an RDE test. This paper reports the results of full RDE-compliant on-road emissions tests performed on a Euro 6d-TEMP passenger car with a direct injection spark ignition engine and a gasoline particle filter. Testing was performed at two temperatures, both lying within the "standard" temperature range for RDE testing: +25°C and +8°C. Regulated gaseous emissions, particle number and CO2/fuel consumption results are presented and discussed. Overall, as expected, emissions following cold start were significantly higher at the lower test temperature. Nevertheless, the long distance covered during RDE tests (~70-100 km) and such tests' urban phase (>16 km, often ~25 km) weakens the impact of this effect. Some simple mathematical analyses of the results from various portions of the trip are presented

Notes:

Vendor supplied data

Publisher Number:

2020-01-0379

Access Restriction:

Restricted for use by site license