scholarly journals Machine Learning Applied to the NOx Prediction of Diesel Vehicle under Real Driving Cycle

2021 ◽  
Vol 11 (9) ◽  
pp. 3758
Author(s):  
Jonghak Lee ◽  
Sangil Kwon ◽  
Hyungjun Kim ◽  
Jihoon Keel ◽  
Taekwan Yoon ◽  
...  
Keyword(s):  
Real World ◽  
Pollutant Emissions ◽  
Effect Evaluation ◽  
Statistical Parameters ◽  
Measurement Systems ◽  
Performance Factors ◽  
Real Driving Emission ◽  
Urban Rural ◽  
Emission Limits ◽  
Diesel Vehicle

Euro 6 standards impose stringent nitrogen oxide (NOx) emission limits on diesel cars. NOx emissions are significantly different between Euro 6 diesel cars and the previous standards in real-world driving. In this research, the NOx concentrations of Euro 6 diesel engines during real-world driving were studied considering various factors. Real driving emission (RDE) tests were conducted using vehicles equipped with portable emissions measurement systems. Urban, rural, and motorway test routes were utilized. Road environment, atmospheric, and after-treatment performance factors were collected in each case. An artificial neural network was used for evaluation using RDE test data and various statistical parameters. It was found that the proposed method predicted the pollutant emissions effectively. Lastly, the relative importance of each predictor was derived, and the NOx concentrations were analyzed. These approaches provide accurate emission information for an environmental effect evaluation that reflects more realistic road conditions.

614 On-Board Measurement of Exhaust Emissions Emitted from Diesel Vehicle in Real World : Mass Assessment of PM Sampled by Using Micro Dilution Tunnel

2008 ◽  
Vol 2008.83 (0) ◽  
pp. _6-14_
Author(s):  
Norihiko FUJIKI ◽  
Takeshi INOO ◽  
Yoshimitsu WADA ◽  
Shusuke OKADA ◽  
Shigeo NAKAMURA ◽  
...  
Keyword(s):  
Real World ◽  
Exhaust Emissions ◽  
Diesel Vehicle

Design of a 2 x 160 MWel CFB Boiler Utilizing High Sulfur Turkish Lignite

2003 ◽  
Author(s):  
Guenter Scheffknecht ◽  
Nevin Selc¸uk
Keyword(s):  
Pollutant Emissions ◽  
Steady Increase ◽  
Fluidized Bed Combustion ◽  
Retention Efficiency ◽  
Cfb Boiler ◽  
Gas Treatment ◽  
Combustion Technology ◽  
Environmental Requirements ◽  
Emission Limits ◽  
Under Construction

Advantages of fluidized bed combustion technology such as the ability to burn wide variety of fuels efficiently and to control pollutant emissions without flue gas treatment systems have led to a steady increase in its commercial use over the past decades. There exist widely spread lignite reserves in Turkey with an estimated total quantity of 8 billion tons. A major proportion of this indigenous lignite is characterized by high sulfur, moisture and ash contents. CFBC is the fastest growing and still developing technology especially for such indigenous fuels. Meeting the environmental requirements needs high desulfurization efficiency. Special emphasis must therefore be given to the optimum use of the desulfurization agents, normally limestone, to achieve economical operation and to minimize solid by-product generation. This paper deals with a 2 × 160 MWel CFB plant, currently under construction in C¸an, Turkey. Indigenous lignite with a sulfur content of more than 8% (daf) will be utilized. In order to test the performance of Turkish lignites from C¸an mines, firing tests were performed at the 1.2 MW CFBC test rig at the Niederaussem power plant of RWE Rheinbraun in Germany. Main objective of the tests was to evaluate the sulfur retention efficiency to comply with Turkish emission limits.

Analysis of the Impact of the New Emissions Limits on the Temperatures of the Vehicle Floor

2012 ◽  
Vol 152-154 ◽  
pp. 976-981
Author(s):  
Gustavo Inácio Bicalho ◽  
Bruno de Souza Baptista ◽  
Felipe Vereza Lopes da Silva ◽  
Sérgio de Morais Hanriot ◽  
Luben Cabezas-Gómez ◽  
...  
Keyword(s):  
Thermal Comfort ◽  
Catalytic Converter ◽  
Exhaust System ◽  
Pollutant Emissions ◽  
Exhaust Gas ◽  
Air Conditioning System ◽  
Industrial Economy ◽  
Emission Limits ◽  
Gas Recirculation ◽  
The Impact

The Kyoto Protocol established the reduction of pollutant emissions limits for all sectors of industrial economy in 8%, compared to 1990´s levels, to be adopted in the period between 2008 and 2012. Individual countries defined a progressive scale for the emission reduction applied to automotive vehicles. These new emission limits are reached altering the calibration of the Electronic Central Unit (ECU), altering the volume and the composition of the catalytic converters and also adding new components to the engine, such as EGR (exhaust gas recirculation) system and phasing sensor. This work evaluates the impact of these modifications in the exhaust system temperatures and in the peripherical devices. In order to meet the requirements of the new emissions limits, the volume of the catalytic converter is higher, increasing the heat rejected. It provokes a temperature raise on the exhaust system and under the vehicle pavement, which impact the functionality of some components and also the passenger's thermal comfort. It is observed that the new emission standards in Brazil resulted in an increase of the vehicle temperatures, affecting the passengers’ thermal comfort, and eventually producing more emissions due to the use of an air conditioning system.

scholarly journals Overview of the light-duty vehicles tailpipe emissions regulations in the European Union: status and upcoming type-approval and market surveillance schema

2020 ◽  
Vol 180 (1) ◽  
pp. 3-7 ◽  
Author(s):  
Víctor VALVERDE-MORALES
Keyword(s):  
European Union ◽  
Pollutant Emissions ◽  
The European Union ◽  
Market Surveillance ◽  
Type Approval ◽  
Light Duty ◽  
Union Status ◽  
Emission Limits ◽  
Light Duty Vehicles ◽  
The Eu

In order to curb pollutant emissions from light-duty vehicles in the European Union, a set of complex regulations have been ap-proved in the recent years (2016-2018) including more stringent emissions tests, independent in-service conformity checks, and a novel type-approval framework which includes market surveillance provisions to complement the type-approval requirements. Tailpipe emissions will need to meet stringent emission limits before entering the market at type-approval and at the end of the production line, as well as during their normal life under normal conditions of use. This contribution aims at providing a comprehensive but synthetic analysis of the current regulatory context in the EU.

scholarly journals Analysis of Real-World Fuel Consumption Characteristics of Heavy-Duty Commercial Diesel Vehicle Based on OBD Method

2020 ◽  
Vol 774 ◽  
pp. 012137
Author(s):  
Weinan He ◽  
Ying Cheng ◽  
Ying Liu ◽  
Changyuan Wang ◽  
Xiyu Fang ◽  
...  
Keyword(s):  
Fuel Consumption ◽  
Real World ◽  
Heavy Duty ◽  
Diesel Vehicle
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