Ecological Research of Ownership Drive Train in the Real Traffic with the Engine Parameters Registration

Abstract:

The paper discusses the issues related to the measurement of the operating parameters of a conventional engine and the parameters of a conventional bus in motion. The measurements were performed under actual traffic conditions of a city bus in Poznan. It is noteworthy that on-road tests under actual operating conditions are one of the main trends of the development of the testing methodology and are gradually gaining in importance. Specific conditions were selected to ensure the highest possible reflection of the actual conditions: the traffic similar to the traffic typical of a regular bus route (average traffic on Poznan routes). The tests were performed in the city traffic on a route similar to the actual bus routes of the Poznan bus operator. The tests were conducted for two days (Friday and Saturday), characteristic of very high and very low number of transported people respectively as well as high and medium traffic congestion. During the tests the engine and the driving parameters were recorded continuously as sent from the diagnostic system of the vehicle and the GPS. Based on the exhaust emission level characteristics of the bus fitted with the conventional powertrain the share of the emissions was determined depending on the engine parameters as well as the driving parameters during the whole test. The operating range of the vehicle was within the speeds of 016 m/s (0-60 km/h) and accelerations of 0,3 m/s²0,3 m/s². A great share of the vehicle operation in the urban traffic was at idle (the share amounts to 33%) while for higher speed ranges of 814 m/s the operating time-share was approximately 20%. The authors also performed an analysis of the changes of the exhaust emissions under dynamic conditions depending on the speed of the bus.

• Periodical: Applied Mechanics and Materials (Volume 391)
• Pages: 86-92
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.391.86
• Online since: September 2013
• Authors: Maciej Bajerlein, Jerzy Merkisz, Pawel Daszkiewicz
• Keywords: Combustion Engine CI DI, Emission, Engine Performance

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