Analysis of measurement errors of cvs method used for tests of pollutant emissions from light-duty vehicles

• Autorzy: Majerczyk A. , Radzimirski S.
• Języki publikacji: EN

Abstrakty

EN

The test procedure for the pollutant emissions from light-duty vehicles is currently under verification carried out at the international level. For this purpose, GRPE (Groupe des rapporteurs sur la pollution et energie) – the body developing UNECE regulations proposals - has set up a task group WLTP (Worldwide harmonized Light vehicles Test Procedure) which is supposed to prepare a new GTR (Global Technical Regulation) relating to this procedure. The development of light-duty vehicles, leading to the reduction of pollutants emissions, caused the increase of the requirements for their test procedure. A large number of factors associated, inter alia, with the test equipment affects its accuracy, repeatability and reproducibility. In the ongoing analysis attention is paid even to factors, which affect test results in a relatively small way, and which have been overlooked yet. One of the problems to which attention is paid is the impact of pollutant concentration in the dilution air in the CVS (constant volume sampler) system on test results. The CVS principle is accepted as the standard method to determine light-duty vehicle exhaust emissions on chassis dynamometer test cells worldwide. It was introduced in the early 1970s. One of its drawbacks is that it introduces an error resulting from the fact that the contractual DF dilution factor, rather than the actual dilution ratio DR, is used for the correction of concentration measurement results. The article discusses this error for different type of engines used in light-duty vehicles and different pollutants subject to measurements.

Słowa kluczowe

EN

transport; road transport; combustion engines; air pollution; environmental protection

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2013
• Tom: Vol. 20, No. 4
• Strony: 253--259
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Majerczyk A.

• Motor Transport Institute Environment Protection Centre Jagiellońska Street 80, 03-301 Warsaw, Poland tel.: [phone], fax: [phone]

autor

Radzimirski S.

• Motor Transport Institute Environment Protection Centre Jagiellońska Street 80, 03-301 Warsaw, Poland tel.: [phone], fax: [phone]

Bibliografia

• [1] Regulation (EC) No 715/2007 of the European Parliament and of the Council of 20 June 2007 On type approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, OJ L 171/1, 29.6.2007.
• [2] Commission Regulation (EC) No. 692/2008 of 18 July 2008 implementing and amending Regulation (EC) No. 715/2007 Of the European Parliament and of the Council on type approval of motor vehicles with respect to emissions from light passenger and commercial vehicles (Euro 5 and Euro 6) and on access to vehicle repair and maintenance information, OJ L 199/1, 28.07.2008.
• [3] United Nations. Agreement concerning the Adoption of Uniform Technical Prescriptions for Wheeled Vehicles, Equipment and Parts which can be Fitted and/or be Used on Wheeled Vehicles and the Conditions for Reciprocal Recognition of Approvals Granted on the Basis of these Prescriptions, Addendum 82: Regulation No. 83, Revision 4. Uniform provisions concerning the approval of vehicles with regard to the emission of pollutants according to engine fuel requirements. E/ECE/324/Rev.4-ECE/TRANS/505 Rev. 1/Add. 82/Rev. 4, 26 April 2011.
• [4] Regulation (EU) no 510/2011 of the European Parliament and of the Council of 11 may 2011 setting emission performance standards for new light commercial vehicles as part of the union's integrated approach to reduce CO2 emissions from light-duty vehicles, OJ L 145/1, 31.05.2011.
• [5] Regulation (EC) No. 443/2009 the European Parliament and of the Council of 23 April 2009 setting emission performance standards for new passenger cars as part of the Community’s integrated approach to reduce CO2 emissions from light-duty vehicles, OJ L140/1, 5.06.2009.
• [6] Proposal of an advanced method for mass emission determination, Document GRPE/WLTP/DTP nr 07-02. http://circa.europa.eu-Public-jrc-enterpreise-wltp-dtp-libraryl=wltp-dtp-measurement-wltp-dtp-pmpn-07-02 EN1.