Comparative exhaust emission study of diesel and CNG fuel buses of Karnataka State Road Transport Corporation

2011 ◽  
Author(s):  
S. Bhandarkar
Keyword(s):  
Road Transport ◽  
Exhaust Emission ◽  
Karnataka State ◽  
Emission Study

scholarly journals Analysis of exhaust emission measurements in rural conditions from heavy-duty vehicle

2020 ◽  
Vol 182 (3) ◽  
pp. 54-58
Author(s):  
Andrzej Ziółkowski ◽  
Paweł Fuć ◽  
Piotr Lijewski ◽  
Łukasz Rymaniak ◽  
Paweł Daszkiewicz ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Road Transport ◽  
Exhaust Emissions ◽  
Operating Conditions ◽  
Transport Sector ◽  
Exhaust Emission ◽  
Heavy Vehicles ◽  
Heavy Duty Vehicle ◽  
Emission Norm ◽  
Test Route

Road transport holds for the largest share in the freight transport sector in Europe. This work is carried out by heavy vehicles of various types. It is assumed that, in principle, transport should take place on the main road connections, such as motorways or national roads. Their share in the polish road infrastructure is not dominant. Rural and communal roads roads are the most prevalent. This fact formed the basis of the exhaust emissions and fuel consumption tests of heavy vehicles in real operating conditions. A set of vehicles (truck tractor with a semi-trailer) meeting the Euro V emission norm, transporting a load of 24,800 kg, was selected for the tests. The research was carried out on an non-urban route, the test route length was 22 km. A mobile Semtech DS instrument was used, which was used to measure the exhaust emissions. Based on the obtained results, the emission characteristics were determined in relation to the operating parameters of the vehicles drive system. Road emission, specific emission and fuel consumption values were also calculated.

scholarly journals Prediction of Exhaust Emission Costs in Air and Road Transportation

2019 ◽  
Vol 11 (17) ◽  
pp. 4688 ◽  
Author(s):  
Olja Čokorilo ◽  
Ivan Ivković ◽  
Snežana Kaplanović
Keyword(s):  
Carbon Dioxide ◽  
Road Transport ◽  
Structure Type ◽  
Influential Factors ◽  
Operating Conditions ◽  
Air Transport ◽  
Transport Sector ◽  
Exhaust Emission ◽  
Vehicle Speed ◽  
Road Transportation

In this paper, the calculation of exhaust emission costs originating from aircraft and road vehicles in the base year 2017 and in the forecasting year 2032, in the Republic of Serbia, was carried out. The presented methodology includes a number of influential factors for air transport (airport capacity, number of operations, aircraft type, relevant engine, range) and for road transport (changing of traffic volumes, design and operating speeds, the quality of the pavement structure, type of terrain and category of road sections, dependence of exhaust emission from changes in vehicle speed). It was found that in the current operating conditions, the dominant costs in the total exhaust emission costs are the costs of nitrogen oxides (61%) in road transport, whilst carbon dioxide costs are dominant in air transport (52%). In the future, carbon dioxide costs will have a share of over 80% in the road transport sector and over 58% in the air transport sector in total exhaust emission costs. The average exhaust emission costs per one aircraft operation (international flights) will range from 141 to 145€. In road transport, the average exhaust emission costs at 100 km in 2032 will range from 1.8 to 2.2€.

scholarly journals Research on the effectiveness of alternative propulsion sources in high-tonnage cargo transport

2021 ◽  
Vol 60 (4) ◽  
pp. 259-273
Author(s):  
Mariusz Wasiak ◽  
Piotr Zdanowicz ◽  
Marcin Nivette
Keyword(s):  
Carbon Dioxide Emissions ◽  
Economic Assessment ◽  
Road Transport ◽  
Operating Conditions ◽  
Environmental Benefits ◽  
Total Carbon ◽  
Transport Sector ◽  
Exhaust Emission ◽  
Emission Standard ◽  
The Eu

The progressive degradation of the environment makes implementing pro-ecological solutions in various areas of our lives more meaningful. These measures also apply to transport, responsible for around 30% of total carbon dioxide emissions in the EU. Implementing ecological solutions in road transport encounters various barriers resulting mainly from the specificity of transport tasks. One of the most promising solutions in the high-tonnage road transport sector seems to be LNG-fueled engines, which allow for similar operating conditions to traditional combustion vehicles. The article aims to identify the environmental benefits of the use of high-tonnage LNG-fueled vehicles in freight transport and to conduct a comprehensive assessment of the economic efficiency of this solution. The article assesses the effectiveness of using an LNG-fueled vehicle and a diesel-fueled vehicle that meets the highest exhaust emission standard in high-tonnage transport, both in terms of economy and an impact of these solutions on the environment. The research was carried out on a given route, taking into account variants of vehicle manning and simulations of transport cycle time. In conclusion, a discussion of the obtained results was carried out, emphasizing the factors determining the profitability of using high-tonnage vehicles with LNG drive or its lack. Regardless of the indicated lack of clarity in the economic assessment of the effectiveness of LNG drives in high-tonnage vehicles, the identified environmental benefits from implementing these solutions seem to be quite unequivocal. Thus, it should be expected that in the event of loss of economic competitiveness of these solutions, appropriate fiscal instruments should be used - especially since LNG drives in the policies of individual countries are considered pro-ecological solutions.

A Multidisciplinary Aero-Engine Exhaust Emission Study

2006 ◽  
Author(s):  
Savad A. Shakariyants ◽  
Jos P. van Buijtenen ◽  
Wilfried P. J. Visser ◽  
Alexander Tarasov
Keyword(s):  
Measurement Data ◽  
Exhaust Emission ◽  
Exhaust Gas ◽  
Gas Composition ◽  
Engine Exhaust ◽  
Aero Engine ◽  
Aircraft Performance ◽  
Emission Study ◽  
Operating Points ◽  
Engine Power

The paper illustrates an aero-engine exhaust emission study, which involves successive simulation procedures for aircraft flight, engine, combustor operation and exhaust emissions. It reveals a generic approach to analyze the effect of changes in flight conditions, power settings and combustor parameters on exhaust gas composition. Using reference measurement data at given engine operating points, pollutant models can be tuned to predict absolute concentration values at altered conditions. Emission formation processes were analyzed in the study using multi-reactor combustor models. The so-called principal pollutants of NOx, UHC, CO and soot were modeled over a broad range of engine power settings at static sea-level conditions. Modeling results were benchmarked against and tuned to emission certification data for a large commercial turbofan. CFD methods were employed to cross-check solution procedures for the engine combustor at the design operating point. Pollutants were also simulated in cruse conditions. Different flight conditions were considered using cross-linked engine and aircraft performance models.

scholarly journals Exhaust emissions of buses LNG and Diesel in RDE tests

2021 ◽  
Vol 11 (1) ◽  
pp. 356-364
Author(s):  
Maciej Gis ◽  
Jacek Pielecha ◽  
Wojciech Gis
Keyword(s):  
Nitrogen Oxides ◽  
Road Transport ◽  
Exhaust Emissions ◽  
Exhaust Emission ◽  
Limit Values ◽  
Traffic Conditions ◽  
Emission Norm ◽  
Evaluation Algorithm ◽  
Emission Limit ◽  
Urban Bus

Abstract The article compares the exhaust emissions in road conditions of city buses: LNG and Diesel. Both buses met the Euro VI exhaust emission norm. The current strong drive to diversify fuels in Poland and the creation of a large gas port in Świnoujście for LNG imports creates an excellent opportunity to use this fuel, also in road transport. Therefore, the attempt to identify the emission in operation, in first place possible applications, i.e. an LNG bus, comparatively with the emission of a Diesel bus. The operational research carried out concerned such a bus and has not yet been carried out in the country, hence their innovation, also methodological. The conducted research, in particular, was aimed at verifying differences in exhaust emissions of carbon dioxide and nitrogen oxides. The study was carried out on one urban bus route performing trips on consecutive days in similar environmental conditions. The performed tests were not strictly type approval tests but only used for comparative purposes. Hence, it was necessary to determine the compliance factor for the relevant exhaust gas substances, with the use of an evaluation algorithm based on measurement windows. Based on these results, the assumption regarding compliance with the emission requirements for the tested buses was verified in real traffic conditions. The exhaust emission values (emission indicators) determined in this way did not exceed the permissible emission limit values for carbon monoxide, while for nitrogen oxides and non-methane hydrocarbons certain exceedances were found.

scholarly journals Karnataka State Road Transport Corporation in Karnataka

2017 ◽  
Vol 08 (01) ◽  
pp. 19-21
Author(s):  
Kavitha B.D ◽  
Dr.Seema S V
Keyword(s):  
Road Transport ◽  
Karnataka State
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