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PEMS-based investigations into exhaust emissions from non-road and rail vehicles

Merkisz J., Lijewski P., Pielecha J.

Combustion Engines

2016

R. 55, nr 3

46--53

At the beginning of the twenty-first century, one of the major challenges of humanity was to reduce the negative effects of civilization development. Besides the engines used in road vehicles there is a large group of engines for non-road applications. This group includes motor propelled vehicles not used on the road NRMM (Non-Road Mobile Machinery). Engines of these vehicles, among all of the non-road applications, are characterized by very specific working conditions that do not allow for them to be qualified for propulsion engines. The main problem with these vehicles is the particulate matter and nitrogen oxides emission. Rail vehicles operating conditions these requirements take by the similar way, as having a wide range of rolling stock markedly alters the environmental impact of these vehicles. Thus it becomes necessary to consider the issue of the method of evaluation of engine emissions in rail vehicles in terms of their actual operating conditions. Thus, efforts to assess the actual level of emissivity for rail vehicles and attempts to improve it are necessary and justified.

The use of cluster analysis method for the development of static load cycles of diesel engines in non road vehicles

Koniuszy A.

Silniki Spalinowe

2008

R. 47, nr 4

39-45

This paper presents a methodology of development of substitute cycle of loads of non road vehicle engines. The use of cluster analysis method made it possible to locate seven characteristic phases of Z8401.12 engine loads, which occur in typical conditions of tractor operation in the region of Pomorze Zachodnie. The author compared credibility breakdowns of the obtained results and stated that the obtained cycle of loads differs from the hitherto used static tests of non road vehicles.

W artykule przedstawiono metodykę tworzenia zastępczego cyklu obciążeń silnika pojazdu pozadrogowego. Posługując się metodą analizy skupień, zlokalizowano siedem charakterystycznych faz obciążeń silnika Z8401.12, występujących przy przeciętnych warunkach eksploatacji ciągnika na Pomorzu Zachodnim. Porównano rozkłady prawdopodobieństw uzyskanych wyników. Stwierdzono, że otrzymany cykl obciążeń różni się od dotychczas stosowanych testów statycznych do badań pojazdów pozadrogowych.