INVESTIGATION OF THE ACCURACY PARTIAL-FLOW CONTROL SYSTEMS FOR PARTICULATE EMISSIONS FROM DIESEL EXHAUST GASES
Array
Keywords:
diesel, ecological compatibility, exhaust gases, articulate matter, dilution tunnel, resulting errorAbstract
The work is devoted to solving the problem of ensuring the required accuracy of frequent-flow mini- and microtunnels - compact systems for controlling mass emissions of particulate matter from diesel engines, which arises due to the difference in temperature conditions of sample preparation in these tunnels and the reference measurement system - full-flow tunnel. According to the results of the analysis of regulatory documents - UNECE Rules R-49, R-96, international standard ISO 8178 and others, international and domestic experience in the use of dilution tunnels, it was established: technical characteristics and operating conditions of reference full-flow and part-flow tunnels, empirical dependencies characterizing the degree the influence of the sample temperature of diluted exhaust gases in the tunnel on the accuracy of measurements of mass emissions of particulate matter at various diesel operating modes. Mathematical models have been developed to determine: sample temperatures in tunnels of various types, the resulting measurement error of the average operational emission of particulate matter - PM index, taking into account the influence of sample temperature in the tunnel on the accuracy of PM measurements. Based on the results of tests of 1Ч12/14 and 4ЧН12/14 diesel engines according to the ESC cycle and developed mathematical models, computational studies were carried out to assess the impact on the accuracy of the minitunnel and microtunnel with diameters of 10 cm and 3 cm, respectively, of the temperature conditions of sample preparation, which were compared with a reference system with diameter, 46 cm. The research results proved the feasibility of controlling the temperature of the sample in the microtunnel to eliminate significant methodological errors in the measurement of PM, which are -1.6 ... -1.7%. In a minitunnel, the corresponding errors are not significant and equal to -0.3 ... -0.4%. Since the thermal conditions for diluting the exhaust gases in the minitunnel and the reference system are approximately equal, there is no need to control the sample temperature in this system.
References
Lianga, Z., Tiana, J., Rezaeia, S., Zhanga, Y. (2015). Investigation of SVOC nanoparticle emission from light duty diesel engine using GC×GC-ToF-MS. School of Mechanical Engineering. University of Birmingham, 31.
Redzuk, A., Klimenko, O., Kudrenko, O. (2012). With respect to the determination of the mass emissions of pollutants by wheeled vehicle engines. Road car of Ukraine, 4(228), 2-7.
Foote, E., Maricq, M., Sherman, M., Carpenter, D. et al. (2013). Evaluation of Partial Flow Dilution Methodology for Light Duty Particulate Mass Measurement. SAE Technical Papers, 2013-01-1567, 10.
Klimenko, O., Redzuk, A., Kudrenko, O., Rychok, S. (2012). Research and development of a promising system for determining the mass emissions of pollutants in the exhaust gases of engines. Road car of Ukraine, 5 (229), 2-8.
Alozie, N., Peirce, D., Lindner, A., Winklmayr, W. et al. (2014). Influence of Dilution Conditions on Diesel Exhaust Particle Measurement Using a Mixing Tube Diluter. SAE Technical Papers, 2014-01-1568, 14.
Hirakouchi, N., Fukano, I., Shoji, T. (1989). Measurement of Diesel Exhaust Emissions with Mini-Dilution Tunnel. SAE, 890181, 11.
Nagano, H. (1990). Measurement of Unregulated Exhaust Emissions from Heavy Duty Diesel Engines with Mini-Dilution Tunnel. SAE, 900643, 10.
Smart Sampler PC SPC 472. (1993). PC program for SPC 472 control. AVL, List GmbH Graz, 76.
Russel, R. (1993). Development of a Miniaturized, Dilutien-Based Diesel Engine Particulate Sampling System for Gravimetric Measurement of Particulates. SAE Technical Papers, 931190, 12.
Polivyanchuk, A. (2015). Improving the efficiency of diesel particulate emissions control systems: monograph. Publishing HNADU, 224.
Downloads
Published
How to Cite
Issue
Section
License
The authors who publish in this collection agree with the following terms:
• The authors reserve the right to authorship of their work and give the magazine the right to first publish this work under the terms of license CC BY-NC-ND 4.0 (with the Designation of Authorship - Non-Commercial - Without Derivatives 4.0 International), which allows others to freely distribute the published work with a mandatory reference to the authors of the original work and the first publication of the work in this magazine.
• Authors have the right to make independent extra-exclusive work agreements in the form in which they were published by this magazine (for example, posting work in an electronic repository of an institution or publishing as part of a monograph), provided that the link to the first publication of the work in this journal is maintained. .
• Journal policy allows and encourages the publication of manuscripts on the Internet (for example, in institutions' repositories or on personal websites), both before the publication of this manuscript and during its editorial work, as it contributes to the emergence of productive scientific discussion and positively affects the efficiency and dynamics of the citation of the published work (see The Effect of Open Access).
