A Comparison of Dynamic Exhaust Emissions Tests: Chassis Dynamometer versus Engine Dynamometer

1972 ◽  
Author(s):  
J. F. Cassidy
Keyword(s):  
Exhaust Emissions ◽  
Chassis Dynamometer ◽  
Versus Engine

scholarly journals Determining the route for the purpose light vehicles testing in Real Driving Emissions (RDE) test

2019 ◽  
Vol 178 (3) ◽  
pp. 61-66
Author(s):  
Wojciech GIS ◽  
Jacek PIELECHA ◽  
Jerzy MERKISZ ◽  
Stanisław KRUCZYŃSKI ◽  
Maciej GIS
Keyword(s):  
Exhaust Emissions ◽  
Hybrid Vehicles ◽  
Spark Ignition Engine ◽  
Chassis Dynamometer ◽  
Driving Dynamic ◽  
External Temperature ◽  
Vehicle Load ◽  
Urban Rural ◽  
Test Route ◽  
Research Centres

In the regulations concerning approval of light vehicles starting from September 2019 it will be necessary to conduct exhaust emis-sions tests both on a chassis dynamometer and for real driving emissions. It is a legislative requirement set forth in EU regulations for the purpose of the RDE (Real Driving Emissions) procedure. To decide on the RDE route for the purpose of the LV exhaust emissions tests many requirements must be fulfilled, regarding for ex-ample external temperature and the topographic height of the tests, driving style (driving dynamic parameters), trip duration, length of respective test sections (urban, rural, motorway, etc.). The works on outlining RDE routes are continued across the country in various research centres. Specifying the RDE route for test purposes, i.e. works in which the authors of this article are actively involved, has become a major challenge for future approval surveys concerning the assessment of hazardous emissions from light vehicles and for development studies focusing on – for example – the consumption of energy in electric and hybrid vehicles. The vehicle load was consistent with the requirements of the standard and included the aforesaid measurement device, the driver and the operator of PEMS. The tests were carried out on working days. The streets and roads used for the tests were hard-surfaced. Meas-urements were performed in accordance with the requirements of RDE packages (Package 1–4), i.e. taking into account – among others the engine cold start. The article discusses the method of outlining the test route fulfilling the specific requirements for RDE testing. Chosen results of ex-haust emissions from a passenger car with a spark-ignition engine along the defined RDE test route have been provided. The tests discussed in the article are introductory in the area of RDE tests and provide an introduction into further studies of exhaust emissions and energy consumption in real driving conditions in conventional vehicles and vehicles with alternative engines, e.g. hybrid and electric vehicles.

Exhaust Emissions from In-Use Heavy Duty Vehicles Tested on a Transportable Transient Chassis Dynamometer

1992 ◽  
Author(s):  
D. H. Ferguson ◽  
Mridul Gautam ◽  
W. G. Wang ◽  
Nigel Clark ◽  
D. W. Lyons ◽  
...  
Keyword(s):  
Exhaust Emissions ◽  
Chassis Dynamometer ◽  
Heavy Duty ◽  
Heavy Duty Vehicles

scholarly journals Exhaust emissions and fuel consumption in a chassis dynamometer load test in the aspect of modification of an engine controlling system

2017 ◽  
Vol 171 (4) ◽  
pp. 11-16
Author(s):  
Wiesław PIEKARSKI ◽  
Andrzej KURANC
Keyword(s):  
Fuel Consumption ◽  
Gas Flow ◽  
Test Bench ◽  
Exhaust Emissions ◽  
Load Test ◽  
Exhaust Gas ◽  
Chassis Dynamometer ◽  
Test Conditions ◽  
Controlling System ◽  
Dynamometer Test

The article presents calculations of exhaust emissions and fuel consumption under test conditions on a chassis dynamometer test bench. The study describes the realization of the tests and the methodology of the calculation of the exhaust gas flow and the estimation of the fuel consumption based on exhaust emissions. The presented research results and their analysis describe the emission scale of selected gaseous fumes components during full engine load and the fuel consumption associated with such tests. Similar emissions occur during a rapid acceleration of a vehicle in road conditions.

scholarly journals Influence of drivers’ driving style on the uncertainty of measurements of exhaust emissions on a chassis dynamometer

2018 ◽  
Vol 19 (12) ◽  
pp. 675-679
Author(s):  
Andrzej Szczotka ◽  
Bartosz Puchałka ◽  
Piotr Bielaczyc
Keyword(s):  
Exhaust Emissions ◽  
Exhaust Emission ◽  
Combustion Engines ◽  
Chassis Dynamometer ◽  
Driving Style ◽  
Uncertainty Of Measurements ◽  
The Impact

Exhaust emission measurements on the chassis dynamometer are one of the most important and most complex tests which are performed on vehicles driven by combustion engines. This paper de-scribes in detail one of the most important factor affecting on the final results of the exhaust emission: the impact of the drivers’ driving style..

scholarly journals Identification and quantification of particulate tracers of exhaust and non-exhaust vehicle emissions

2019 ◽  
Vol 19 (7) ◽  
pp. 5187-5207 ◽  
Author(s):  
Aurélie Charron ◽  
Lucie Polo-Rehn ◽  
Jean-Luc Besombes ◽  
Benjamin Golly ◽  
Christine Buisson ◽  
...  
Keyword(s):  
Road Traffic ◽  
Exhaust Emissions ◽  
Emission Factors ◽  
Traffic Emissions ◽  
Chassis Dynamometer ◽  
Traffic Emission ◽  
The Road ◽  
Light Duty ◽  
Key Species ◽  
Brake Wear

Abstract. In order to identify and quantify key species associated with non-exhaust emissions and exhaust vehicular emissions, a large comprehensive dataset of particulate species has been obtained thanks to simultaneous near-road and urban background measurements coupled with detailed traffic counts and chassis dynamometer measurements of exhaust emissions of a few in-use vehicles well-represented in the French fleet. Elemental carbon, brake-wear metals (Cu, Fe, Sb, Sn, Mn), n-alkanes (C19-C26), light-molecular-weight polycyclic aromatic hydrocarbons (PAHs; pyrene, fluoranthene, anthracene) and two hopanes (17α21βnorhopane and 17α21βhopane) are strongly associated with the road traffic. Traffic-fleet emission factors have been determined for all of them and are consistent with most recent published equivalent data. When possible, light-duty- and heavy-duty-traffic emission factors are also determined. In the absence of significant non-combustion emissions, light-duty-traffic emissions are in good agreement with emissions from chassis dynamometer measurements. Since recent measurements in Europe including those from this study are consistent, ratios involving copper (Cu∕Fe and Cu∕Sn) could be used as brake-wear emissions tracers as long as brakes with Cu remain in use. Near the Grenoble ring road, where the traffic was largely dominated by diesel vehicles in 2011 (70 %), the OC∕EC ratio estimated for traffic emissions was around 0.4. Although the use of quantitative data for source apportionment studies is not straightforward for the identified organic molecular markers, their presence seems to well-characterize fresh traffic emissions.

scholarly journals Ethanol as an automotive fuel – a review

2016 ◽  
Vol 166 (3) ◽  
pp. 39-45
Author(s):  
Piotr Bielaczyc ◽  
Joseph Woodburn ◽  
Mateusz Gandyk ◽  
Andrzej Szczotka
Keyword(s):  
Current Knowledge ◽  
Road Transport ◽  
Exhaust Emissions ◽  
Spark Ignition ◽  
Significant Part ◽  
Spark Ignition Engines ◽  
Chassis Dynamometer ◽  
Automotive Fuel ◽  
Laboratory Results ◽  
Pros And Cons

Usage of ethanol as a fuel has been known for hundreds of years. However, recently usage of ethanol and its blends as a road transport fuel has increased and interest in its use is growing. There are a lot of pros and cons connected with using ethanol, which are described in this paper. This paper reviews current knowledge on using ethanol in spark ignition engines. The fuel is described in the context of future opportunities. A significant part of the paper is dedicated to the analysis of ethanol and its blends’ impact on regulated and unregulated exhaust emissions, including laboratory results obtained by BOSMAL from chassis dynamometer testing of European vehicles.

scholarly journals Identification and quantification of particulate tracers of exhaust and non-exhaust vehicle emissions

2018 ◽  
Author(s):  
Aurélie Charron ◽  
Lucie Polo-Rehn ◽  
Jean-Luc Besombes ◽  
Benjamin Golly ◽  
Christine Buisson ◽  
...  
Keyword(s):  
Road Traffic ◽  
Exhaust Emissions ◽  
Emission Factors ◽  
Traffic Emissions ◽  
Chassis Dynamometer ◽  
Traffic Emission ◽  
The Road ◽  
Diesel Vehicles ◽  
Key Species ◽  
Brake Wear

Abstract. In order to identify and quantify key-species associated with non-exhaust emissions and exhaust vehicular emissions a large comprehensive dataset of particulate species has been obtained thanks to simultaneous near-road and urban background measurements coupled with detailed traffic counts and chassis dynamometer measurements of exhaust emissions of a few in-use vehicles well-represented in the French fleet. Elemental Carbon, brake-wear metals (Cu, Fe, Sb, Sn, Mn), n-alkanes (C19–C26), light molecular weight PAHs (Pyrene, Fluoranthene, Anthracene) and two hopanes (17α21βNorhopane and 17α21βhopane) are strongly associated with the road traffic. Traffic-fleet emission factors have been determined for all of them and are consistent with most recent published equivalent data. When possible, light-duty and heavy-duty duty traffic emission factors are also determined. Most of the first ones are in good agreement with emissions from chassis dynamometer measurements in absence of significant non-combustion emissions. This study has shown that ratios involving copper (mainly Cu/Fe and Cu/Sn) could be used to trace brake-wear emissions as they seem to be roughly constant in Europe and as longer as Cu-free brake are not largely spread. In France where the traffic was largely dominated by diesel vehicles in 2011 (70 %), the OC/EC ratio typical of traffic emissions was around 0.44. On the contrary, the use of quantitative data for source apportionment studies is not straightforward for the identified organic molecular markers; while, their presence seems to well-characterized fresh traffic emissions.

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