scholarly journals Particulates mass and number emission from hybrid vehicle in RDE test

2019 ◽  
Vol 24 (6) ◽  
pp. 286-290
Author(s):  
Natalia Szymlet ◽  
Barbara Sokolnicka ◽  
Maciej Sieldecki ◽  
Piotr Lijewski ◽  
Mateusz Nowak
Keyword(s):  
Hybrid Vehicle ◽  
Operating Conditions ◽  
Exhaust Emission ◽  
Particulate Emissions ◽  
Vehicle Exhaust ◽  
Engine Exhaust ◽  
Limit Values ◽  
Emission Limit ◽  
And Performance ◽  
Particle Sizer

The subject of this article is the analysis of the particle number and mass road emission from a hybrid vehicle in real operating conditions. Additionally, the operating conditions of the tested vehicle and engine were also analyzed. To this end, particulate emissions and performance tests were carried out from a light hybrid vehicle, equipped with a 77 kW engine with a displacement of 1.58 dm3. The tests were conducted in real traffic conditions, following the standard RDE (Real Driving Emission) procedure. The test was performed within the Poznań agglomeration, the route included roads with different maxi-mum speed limits. The research involved the use of mobile measuring equipment, belonging to the PEMS (Portable Emissions Measurement System) group, which included equipment such as: SEMTECH DS, AVL MSS (Micro Soot Sensor) and EEPS 3090 (Engine Exhaust Particle Sizer). The results obtained have been referred to the vehicle exhaust emission limit values in accordance with the Euro 6 norm.

Research on Engine Fault Detection System Based on Exhaust Emission

2012 ◽  
Vol 590 ◽  
pp. 516-520 ◽  
Author(s):  
Cheng Wang ◽  
Shan Zhen Xu
Keyword(s):  
Fault Detection ◽  
Virtual Instrument ◽  
Detection System ◽  
Exhaust Emission ◽  
Vehicle Exhaust ◽  
Engine Exhaust ◽  
Gas Concentration ◽  
The Neural Network ◽  
Instrument Technology ◽  
Working Performance

Vehicle exhaust composition contains running state information of the vehicle. Real-time detecting emissions ingredients of the vehicle can realize engine fault diagnosis. Based on the engine exhaust emission abnormal reason analysis, the design scheme of the hardware and software of the system was established. By using the neural network and virtual instrument technology, the software of the engine fault detection system based on emissions was developed. This system is not only to test the gas concentration that contained in automobile exhaust such as CO, HC, CO2, NOx, O2 in different working condition, but also to diagnosis the working performance and working state of the engine.

scholarly journals THE PARAMETERS OF PASSENGER CARS ENGINE IN TERMS OF REAL DRIVE EMISSION TEST

2014 ◽  
Vol 32 (4) ◽  
pp. 43-50 ◽  
Author(s):  
Jerzy Merkisz ◽  
Marianna Jacyna ◽  
Agnieszka Merkisz-Guranowska ◽  
Jacek Pielecha
Keyword(s):  
Environmental Performance ◽  
Gasoline Engine ◽  
Operating Conditions ◽  
Passenger Cars ◽  
Limit Values ◽  
Traffic Conditions ◽  
Passenger Vehicles ◽  
Certification Tests ◽  
Emission Limit ◽  
Real Traffic

This paper presents the preliminary concept research to develop the test used in the measurement of emissions in real traffic conditions for passenger vehicles. Work based on the lack of legal solutions for determining the environmental performance of light vehicles – as opposed to heavy-duty vehicles for which such regulations have specified. The elaboration is to compare the emission test used in clinical approval of passenger cars, while the synthesis of the results obtained under different conditions road tests. The intention is to develop a test for assessing the ecological vehicle in real traffic conditions, where restrictions will only drive type (gasoline engine, diesel engine, hybrid vehicle), which is consistent with the requirements of the certification tests. The result should be the foundation for the development of the test in terms of: the duration, to determine the operating conditions and vehicle and proposals for emission limit values.

Effect of Particle Size Distribution on the Deep-Bed Capture Efficiency of an Exhaust Particulate Filter

2015 ◽  
Vol 137 (10) ◽  
Author(s):  
Sandeep Viswanathan ◽  
David Rothamer ◽  
Stephen Sakai ◽  
Mitchell Hageman ◽  
David Foster ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Deposition ◽  
Operating Conditions ◽  
Particulate Filter ◽  
Particulate Emissions ◽  
Flow Area ◽  
Wall Area ◽  
Filter Loading ◽  
Particle Sizer ◽  
The Impact

The exhaust filtration analysis system (EFA) developed at the University of Wisconsin–Madison was used to perform microscale filtration experiments on cordierite filter samples using particulate matter (PM) generated by a spark ignition direct injection (SIDI) engine fueled with gasoline. A scanning mobility particle sizer (SMPS) was used to characterize running conditions with four distinct particle size distributions (PSDs). The distributions selected differed in the relative number of accumulation versus nucleation mode particles. The SMPS and an engine exhaust particle sizer (EEPS) were used to simultaneously measure the PSD downstream of the EFA and the real-time particulate emissions from the SIDI engine to determine the evolution of filtration efficiency (FE) during filter loading. Cordierite filter samples with properties representative of diesel particulate filters (DPFs) were loaded with PM from the different engine operating conditions. The results were compared to understand the impact of PSD on filtration performance as well as the role of accumulation mode particles on the diffusion capture of PM. The most penetrating particle size (MPPS) was observed to decrease as a result of particle deposition within the filter substrate. In the absence of a soot cake, the penetration of particles smaller than 70 nm was seen to gradually increase with time, potentially due to increased velocities in the filter as flow area reduces during filter loading, or due to decreasing wall area for capture of particles by diffusion. Particle re-entrainment was not observed for any of the operating conditions.

Effect of Particle Size Distribution on the Deep-Bed Capture Efficiency of an Exhaust Particulate Filter

2014 ◽  
Author(s):  
Sandeep Viswanathan ◽  
Stephen S. Sakai ◽  
Mitchell Hageman ◽  
David E. Foster ◽  
Todd Fansler ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Particle Deposition ◽  
Operating Conditions ◽  
Particulate Filter ◽  
Particulate Emissions ◽  
Filter Loading ◽  
Particle Sizer ◽  
The Impact

The exhaust filtration analysis system (EFA) developed at the University of Wisconsin – Madison was used to perform micro-scale filtration experiments on cordierite filter samples using particulate matter (PM) generated by a spark-ignition direct injection (SIDI) engine fueled with gasoline. A scanning mobility particle sizer (SMPS) was used to characterize running conditions with four distinct particle size distributions (PSDs). The distributions selected differed in the relative number of accumulation versus nucleation mode particles. The SMPS and an engine exhaust particle sizer (EEPS) were used to simultaneously measure the PSD downstream of the EFA and the real-time particulate emissions from the SIDI engine to determine the evolution of filtration efficiency during filter loading. Cordierite filter samples with properties representative of diesel particulate filters (DPFs) were loaded with PM from the different engine operating conditions. The results were compared to understand the impact of particle size distribution on filtration performance as well as the role of accumulation mode particles on the diffusion capture of PM. The most penetrating particle size (MPPS) was observed to decrease as a result of particle deposition within the filter substrate. In the absence of a soot cake, the penetration of particles smaller than 70 nm was seen to gradually increase with time, potentially due to increased velocities in the filter as flow area reduces during filter loading, or due to decreasing wall area for capture of particles by diffusion. Particle re-entrainment was not observed for any of the operating conditions.

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 Modelling and performance analysis of the BVP M-80A hybrid drive

2021 ◽  
Vol 69 (1) ◽  
pp. 64-87
Author(s):  
Stefan Milićević ◽  
Slavko Muždeka
Keyword(s):  
Simulation Software ◽  
Operating Conditions ◽  
Exhaust Emission ◽  
Commercial Vehicles ◽  
Hybrid Drive ◽  
Hybrid Technology ◽  
Proposed Model ◽  
System Solution ◽  
And Performance ◽  
And Control

Introduction: Hybrid technology has been successfully incorporated into the industry of passenger and commercial vehicles. Driven by the success and benefits that hybrid technology brings, many defense organizations around the world invest in the development of hybrid technology for combat vehicles and develop prototypes of tracked combat vehicles which have lower fuel consumption, better performance, better exhaust emission, and additional onboard electric power. However, various technical challenges must be resolved before it comes to the introduction of hybrid tracked combat vehicles in operational use. Several successful tests of prototypes have been conducted so far, but there are still restrictions on key technologies such as electric motors, electronics, and storage of electricity. In such conditions, where finance is limited, mistakes cannot be allowed nor spending a lot of resources on planning, building prototypes, and testing. Method: Therefore, it is clever to run the simulation software with which it is possible to examine various parameters in simulated conditions which more or less mimic real operating conditions. This paper aims to show one of possible solutions concerning the selection of appropriate technologies of hybrid drive, to propose a system solution for a hybrid BVP M80A, and to display a simulation hybrid drive model and the results obtained from the model devised in Simulink. Results: The results obtained by the simulation show that the proposed hybrid drive solution provides better performance while retaining key drivetrain elements of the vehicle. Conclusion: Only turning parameters are considered during the simulation but it is clear that the hybrid drivertrain has advantages related to straightline motion as well. Also, sound projections about the drivetrain performance and control can be made with the use of the proposed model.

scholarly journals Design, construction and performance study of a cascade impactor for reducing diesel particulate emission

1970 ◽  
Vol 39 (1) ◽  
pp. 26-29
Author(s):  
Md Shamim Akhter ◽  
SM Najmul Hoque ◽  
Md Nurun Nabi
Keyword(s):  
Collection Efficiency ◽  
Stokes Number ◽  
Cascade Impactor ◽  
Operating Conditions ◽  
Performance Study ◽  
Engine Emissions ◽  
Engine Exhaust ◽  
Particulate Emission ◽  
Brake Thermal Efficiency ◽  
And Performance

In this paper, the design and construction of a cascade impactor for reducing particulate emission from a diesel engine exhaust has been presented and experiments have been carried out to determine its collection efficiency. The cascade impactor designed in this work consists of four stages having successive decreasing nozzle diameter so as to capture successive smaller diameter particles in the stages. The successive nozzle diameters (D) were selected 2.1cm, 1.7cm, 1.3cm and 0.9cm. Also the distances between nozzle and impaction plate (S) were taken as 2.1cm, 1.4cm, 0.9cm and 0.45cm respectively so that S/D for succeeding stages becomes 1, 0.82, 0.7 and 0.5 respectively. In this investigation, collection efficiency of the cascade impactor based on different engine operating conditions has been determined. Effect of fitting the cascade impactor to engine exhaust on different engine parameters and engine emissions were also found out. At a constant speed of 1000 rpm, a maximum collection efficiency of about 85% of the impactor was obtained at a load of 6kg. A slight decrease in brake thermal efficiency of the engine with the cascade impactor was also noticed. However, by fitting the cascade impactor to the engine, CO and NOx emissions were found to decrease. Keywords: Real impactor, cascade impactor, Reynolds number, Stokes number, collection efficiency. doi:10.3329/jme.v39i1.1830 Journal of Mechanical Engineering, vol. ME39, No. 1, June 2008 26-29

Comparative Particulate Trap Performance Using Fischer-Tropsch and Conventional Diesel Fuels in a Modern CI Engine

2006 ◽  
Author(s):  
Alexander G. Sappok ◽  
Victor W. Wong
Keyword(s):  
Diesel Engine ◽  
Operating Conditions ◽  
Sulfur Poisoning ◽  
Particulate Emissions ◽  
Fischer Tropsch ◽  
Diesel Particulate ◽  
Diesel Fuels ◽  
Before And After ◽  
And Performance ◽  
Fuel Effects

Increasingly stringent emissions regulations aimed at drastically reducing particulate emissions from diesel engines pose one of the greatest challenges to diesel engine development today. Furthermore, engine manufacturers are finding it more and more difficult to comply with these new regulations through in-cylinder optimization alone. As a result, exhaust after-treatment systems, namely diesel particulate traps, present additional means for meeting these strict requirements. A previous study demonstrated the potential for diesel particulate emissions reduction using neat Fischer-Tropsch (F-T) fuel and blends. The absence of sulfur in F-T fuels permits the use of more aggressively catalyzed traps, as sulfur poisoning is not an issue. Furthermore, the reduced particulate emissions of F-T fuels leads to increased time between trap regenerations, which in conjunction with advanced catalyst formulations reducing the temperatures required to initiate regeneration, may provide substantial improvements in trap durability and performance. However, the deposition of particulates from F-T fuels on the trap substrates and loading and regeneration of the trap with F-T particulates and F-T fuel have not been adequately addressed. In this study a 2002, six-cylinder, 5.9 liter, Cummins ISB 300 diesel engine, outfitted with a fully instrumented particulate trap, was subjected to a subset of the Euro III 13-mode test cycle under steady-state operating conditions. In order to investigate the fundamental fuel effects on particulate trap loading characteristics, un-catalyzed Cordierite substrates were loaded with particulates generated from neat F-T diesel and a low sulfur diesel (LSD). Trap temperature, pressure drop, particulate emissions, and gaseous exhaust composition were monitored before and after the trap. The use of F-T fuel significantly extended the trapping period and reduced the regeneration frequency as compared to the LSD. Based on the differences in emissions and fuel composition, explanations for the observed differences in the trap performance were developed.

Research on Perovskite Catalysis for Diesel Engine Exhaust Removal

2014 ◽  
Vol 937 ◽  
pp. 363-369
Author(s):  
Peng Liang ◽  
Qian Yang Chen ◽  
Hai Bo Long
Keyword(s):  
Diesel Engine ◽  
Catalyst Preparation ◽  
Diesel Emissions ◽  
Perovskite Oxide ◽  
Exhaust Emission ◽  
Particulate Emissions ◽  
Treatment Technology ◽  
Engine Exhaust ◽  
Preparation Methods ◽  
Diesel Engine Exhaust

Diesel engine emissions of nitrogen oxides and particulates are the major source of air pollution that is a serious threat to human health. Diesel emissions treatment technology meet the increasingly stringent emission standards through the current difficulty and develop a new diesel engine exhausted treatment technology to further reduce the nitrogen oxide and particulate emissions are from diesel engines. In this paper, La1-xAxCo1-yByO3 complex perovskite catalysts for diesel engine exhaust emission purification carry out the relevant research, this article firstly study the perovskite oxide catalyst preparation methods, as the catalyst preparation process are described .Then the activity of the catalyst samples obtain some useful results.

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