Exhaust emission from a vehicle engine operating in dynamic states and conditions corresponding to real driving
More details
Hide details
Faculty of Mechanical Engineering at Wrocław University of Technology.
Faculty of Automotive and Construction Machinery Engineering, Warsaw University of Technology.
Faculty of Transport Engineering, Poznan University of Technology.
Publication date: 2019-07-01
Combustion Engines 2019,178(3), 99–105
The article presents the exhaust emission results from a diesel engine in dynamic states of engine operation in the driving tests: NEDC (New European Driving Cycle) and Malta test, developed at the Poznan University of Technology. The NEDC and Malta tests were carried out as simulations on the engine test bench mimicking the driving tests conditions. The test results of the emission of carbon monoxide, hydrocarbons and nitrogen oxides obtained in each of the tests were presented. The dynamic states have been classified de-pending on the time derivative value of the torque and engine rotational speed. Both the positive and negative as well as zero time deriv-ative values of torque and rotational speed were considered. Therefore, overall six types of dynamic states were analyzed. A high sensi-tivity of exhaust emission to various types of dynamic states was found. The exhaust emission sensitivity to dynamic states in the Malta test was found to be higher than for the NEDC test, although these tests have similar properties (average rotational speed and average torque). This is due to the fact that the NEDC test is created on the basis of the similarity of zero-dimensional characteristics of the cars speed characteristic, whereas the Malta test was designed in accordance with the principle of faithful representation in the time domain of the NEDC speed curve.
ANDRYCH-ZALEWSKA, M., CHŁOPEK, Z., MERKISZ, J., PIELECHA, J. Evaluation of the test drive cycle conditions impact on exhaust emissions from an internal combustion engine. Combustion Engines. 2018, 175(4), 3-9.
ANDRYCH-ZALEWSKA, M. Wpływ katalizatora wewnętrznego na emisję spalin w stanach pracy silnika o zapłonie samoczynnym odpowiadających jego użytkowaniu trakcyjnemu. Rozprawa doktorska. Poznań 2018.
ARREGLE, J., BERMUDEZ, V., SERRANO, JR., FUENTES, E. Procedure for engine transient cycle emissions testing in real time. Experimental Thermal and Fluid Science. 2006, 30(5), 485-496.
CHŁOPEK, Z., BIEDRZYCKI, J., LASOCKI, J., WÓJCIK, P. Assessment of the impact of dynamic states of an internal combustion engine on its operational properties. Eksploatacja i Niezawodnosc – Maintenance and Reliability. 2015, 17(1), 35-41.
CHŁOPEK, Z. Synthesis of driving cycles in accordance with the criterion of similarity of frequency characteristics. Eksploatacja i Niezawodnosc – Maintenance and Reliability. 2016, 18(4), 572-577.
CHŁOPEK, Z. Some remarks on engine testing in dynamic states. Combustion Engines. 2010, 4(143), 60-72.
MERKISZ, J., GIS, W. Exhaust emission from vehicles under real conditions. Proceedings of the Ninth Asia–Pacific International Symposium on Combustion and Energy Utilization. APISCEU, Beijing 2008.
MERKISZ, J., LIJEWSKI, P., FUĆ, P., WEYMANN, S. Exhaust emission tests from non-road vehicles conducted with the use of PEMS analyzers. Eksploatacja i Niezawodnosc – Maintenance and Reliability. 2013, 15(4), 364-368.
Worldwide emission standards, Passenger cars and light duty vehicles. Delphi. Innovation for the real world. 2016/2017.