Examination of pollutant emissions and fuel consumption at tests simulating the real conditions of operation of a passenger car
Zdzisław Chłopek 1  
,  
Jacek Biedrzycki 2  
,  
Jakub Lasocki 3  
,  
 
 
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1
Politechnika Warszawska Instytut Pojazdów
2
Automotive Industry Institute
3
Warsaw University of Technology
Publish date: 2014-10-20
 
The Archives of Automotive Engineering – Archiwum Motoryzacji 2014;65(3):3–18
ABSTRACT
The paper presents results of examination of pollutant emissions and fuel consumption at tests simulating the real conditions of operation of a passenger car. The examination was carried out with the use of PIMOT simulation driving tests developed at the Automotive Industry Institute (PIMOT) on the grounds of analyses of motorcar velocity processes empirically recorded in the conditions of driving the car in urban traffic congestions, urban traffic without congestions, extra-urban traffic, and high-speed traffic (on motorways and fast roads). The pollutant emission and fuel consumption tests were performed on a vehicle chassis dynamometer, where a Honda Civic car with a spark-ignition engine was used as a test specimen. The scope of the examination covered the emissions of carbon monoxide, hydrocarbons, nitrogen oxides, and carbon dioxide. The unrepeatability of the pollutant specific distance emission and the operating fuel consumption values determined was evaluated with the use of the coefficient of variation of the results of measurement of specific quantities. Significant unrepeatability was revealed in the results of measurements of the specific distance emission of carbon monoxide, hydrocarbons, and nitrogen oxides, while the unrepeatability of the results of measurements of carbon dioxide emission and the operating fuel consumption was relatively low. Characteristic curves of the pollutant specific distance emission and the operating fuel consumption as functions of the average vehicle velocity were also determined at the PIMOT tests. The characteristic curves plotted were found to be consistent with the dependences determined on the grounds of the databases incorporated in specialist software packages, such as INFRAS or COPERT.
eISSN:2084-476X