This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Catalyzer Small-Scale Field-Test in Hungary
Annotation ability available
Sector:
Language:
English
Abstract
In Hungary, road vehicles are responsible for a significant part of the air polluting emissions in the great cities especially in the capital - Budapest. To mitigate this problem one of the most promising solutions is the fitting the in use cars with catalysts (so called retrofitting). In this way the technical potential is given, on the one hand, by the large availability of unleaded petrol in Hungary and on the other hand, by the large share of the home car fleet (about 80%) which can be fueled with unleaded petrol.
The field test aimed at the evaluation of large scale use of retrofit catalysts (in real life), especially in the case of two-stroke engined cars. During the tests, first of all the useful life-time expectation and the alteration of the reducing efficiency of CO, HC and NOx were investigated. Beside these, the light-off temperatures and thermal load of the catalysts and their impact on the fuel consumption and dynamic features of the cars were also examined. The test catalysts were purchased from seven well known European manufacturers and equipped on 70 cars typical of the home car fleet. The efficiency of the emission reduction was evaluated by the European driving cycle tests carried out before and after the installation of the catalysts as well as at several mileages.
The results justified the governmental support of retrofit catalysts and their large scale application. The average efficiency regarding CO, HC and NOx was in all cases over 50%, and no definitive deterioration had been experienced up to 50-60.000 km, in the case of four stroke engined cars and up to 20-30.000 km, in the case of two stroke engined ones. The NOx efficiency suggests that the use of TWC without closed loop control should be preferred over oxidation catalysts. Only technically qualified catalysts having high technological level should be recommended for retrofit installation. A nationally accepted test method was determined for this purpose.
Authors
Topic
Citation
Merétei, T., Bányavári, P., Borsi, Z., and Tamási, A., "Catalyzer Small-Scale Field-Test in Hungary," SAE Technical Paper 960236, 1996, https://doi.org/10.4271/960236.Also In
References
- Walsh M.P. Merétei T. Szoboszlay M. Pollák I. Motor Vehicle Pollution in Eastern Europe: A Case Study in Hungary SAE Paper 910171
- Walsh M.P. Global Trends in Motor Vehicle Emission Control Traffic induced air pollution Symposium Graz Techn. Universität 1992 31 73
- Hahn J.
- Pucher E. Kohoutek P.
- Current data about the air quality protection in Hungary Ministry of Environmental Protection Budapest 1995
- Merétei T. Borsi Z. Local and regional emission inventory of the transportation in Hungary for 1991, 1992 and 1993 Research reports KTI Budapest 1993 1994 1995
- Svastits A. Air quality data of Budapest ÁNTSZ report 1995 Budapest
- Transport Data 1990-1994. Infrabooks 7. and 12 Ministry of Transport Communication and Water Management Budapest 1994 1995
- Taylor K.C. Automobile catalytic converters Springer Verlag Berlin 1984
- Pfyl J. 1987
- Hockel G.H. 1992
- Koberstein E. Engler B. 1991
- Schweitzer W. 1986
- Kasedorf J. 1993
- Catalyst and Emission Technology SAE/SP-93/968
- Automotive Emissions and Catalyst Technology SAE/SP-92/938
- Merétei T. Borsi Z. 1990
- Merétei T. et al. Catalyzer small-scale field-test Third, fourth and fifth report on the PHARE-project KTI Budapest 1994 1995
- Sale and Use of Aftermarket Catalytic Converters USA Federal Register 51 o 150 05 08 1986
- USA Federal Register Parts 731-85 01 07 1991 Subpart v. Emission Control System. Performance, Warranty, Regulation and Voluntary Aftermarket Part Certification Program
- National Environmental Protection Board Sweden Decree with Regulation on Retrofitting Exhaust Emission Control Devices to Older Vehicles 26 July 1986
- CLEPA Uniform provisions concerning the approval of replacement of catalytic converters 25 11 1989
- 1994 Retrofit catalytic converters for motor vehicles Tests, requirements and qualification
- Luoma. M. Optimization of Catalyst Behaviour Emission News KEMIRA 1 1995 3 4