scholarly journals Toward Reconciling Instantaneous Roadside Measurements of Light Duty Vehicle Exhaust Emissions with Type Approval Driving Cycles

2012 ◽  
Vol 46 (19) ◽  
pp. 10532-10538 ◽  
Author(s):  
Glyn A. Rhys-Tyler ◽  
Margaret C. Bell
Keyword(s):  
Exhaust Emissions ◽  
Vehicle Exhaust ◽  
Driving Cycles ◽  
Type Approval ◽  
Light Duty ◽  
Light Duty Vehicle

scholarly journals Impact of freeway weaving segment design on light-duty vehicle exhaust emissions

2018 ◽  
Vol 68 (6) ◽  
pp. 564-575 ◽  
Author(s):  
Qing Li ◽  
Fengxiang Qiao ◽  
Lei Yu ◽  
Shuyan Chen ◽  
Tiezhu Li
Keyword(s):  
Exhaust Emissions ◽  
Vehicle Exhaust ◽  
Light Duty ◽  
Light Duty Vehicle

Impact of Higher Alcohols Blended in Gasoline on Light-Duty Vehicle Exhaust Emissions

2013 ◽  
Vol 47 (23) ◽  
pp. 13865-13872 ◽  
Author(s):  
Matthew A. Ratcliff ◽  
Jon Luecke ◽  
Aaron Williams ◽  
Earl Christensen ◽  
Janet Yanowitz ◽  
...  
Keyword(s):  
Exhaust Emissions ◽  
Higher Alcohols ◽  
Vehicle Exhaust ◽  
Light Duty ◽  
Light Duty Vehicle

scholarly journals Inter-Laboratory Correlation Exercise with Portable Emissions Measurement Systems (PEMS) on Chassis Dynamometers

2018 ◽  
Vol 8 (11) ◽  
pp. 2275 ◽  
Author(s):  
Barouch Giechaskiel ◽  
Simone Casadei ◽  
Michele Mazzini ◽  
Mario Sammarco ◽  
Gisella Montabone ◽  
...  
Keyword(s):  
Particle Number ◽  
Laboratory Method ◽  
Measurement Systems ◽  
Type Approval ◽  
Light Duty ◽  
Repeatability And Reproducibility ◽  
Light Duty Vehicle ◽  
The Mean ◽  
Mean Differences ◽  
The Individual

The recently introduced Real Driving Emissions (RDE) light-duty vehicle emissions regulation requires testing with Portable Emissions Measurement Systems (PEMS) during type approval and in-service conformity. The studies on the accuracy of PEMS today are limited. An inter-laboratory correlation exercise with PEMS took place in Italy in 2017. Eight laboratories measured exhaust emissions from a Golden Euro 6 gasoline vehicle with a Golden PEMS installed in it, along with the individual lab’s own PEMS, following the regulated laboratory method (bags from the dilution tunnel). The data of the exercise were used to estimate the repeatability and reproducibility of the methodology with PEMS. The statistical analysis estimated reproducibility of 2.9% (bags) to 5.5% (lab PEMS) for CO2, 20–25% for CO (all methods), 23–31% for NOx (all methods), and 29% (tunnel, Golden PEMS) to 39% (lab PEMS) for particle number. The mean differences of the PEMS to the regulated method were ±1.5 g/km (or ±1%) for CO2, <16 mg/km (or <5%) for CO, <4 mg/km (or <11%) for NOx and 1 × 1011 particles/km (40%) for particle number. The results of this study confirm the satisfactory performance of PEMS and the permissible tolerances introduced in RDE regulation.

The Effects of Neat Biodiesel and Biodiesel and HVO Blends in Diesel Fuel on Exhaust Emissions from a Light Duty Vehicle with a Diesel Engine

2015 ◽  
Vol 49 (12) ◽  
pp. 7473-7482 ◽  
Author(s):  
Adam Prokopowicz ◽  
Marzena Zaciera ◽  
Andrzej Sobczak ◽  
Piotr Bielaczyc ◽  
Joseph Woodburn
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Exhaust Emissions ◽  
Light Duty ◽  
Light Duty Vehicle

Comparison between the WLTC and the FTP-75 driving cycles applied to a 1.4 L light-duty vehicle running on ethanol

2020 ◽  
Author(s):  
Maria F. P. Mazer ◽  
Leonardo S. Hatschbach ◽  
Igor R. dos Santos ◽  
Juliano P. Silveira ◽  
Roberto A. Garlet ◽  
...  
Keyword(s):  
Driving Cycles ◽  
Light Duty ◽  
Light Duty Vehicle

scholarly journals Light-Duty Vehicle Exhaust Emission Control Cost Estimates Using a Part-Pricing Approach

Air & Waste ◽  
1993 ◽  
Vol 43 (11) ◽  
pp. 1461-1471 ◽  
Author(s):  
Quanlu Wang ◽  
Catherine Kling ◽  
Daniel Sperling
Keyword(s):  
Emission Control ◽  
Exhaust Emission ◽  
Vehicle Exhaust ◽  
Control Cost ◽  
Cost Estimates ◽  
Light Duty ◽  
Light Duty Vehicle

Light duty vehicle fuel economy – Comparison of ice, hybrid and electric vehicles based on different driving cycles

2018 ◽  
Author(s):  
Tadeu Cavalcante Cordeiro de Melo ◽  
Sérgio William Botero ◽  
Rogério Nascimento de Carvalho ◽  
Antônio Carlos Scardini Villela ◽  
Guilherme Bastos Machado ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Fuel Economy ◽  
Driving Cycles ◽  
Light Duty ◽  
Light Duty Vehicle

scholarly journals Error Analysis of the Normative Calculation Method of the Exhaust Emissions and Fuel Consumption in the Vehicles Fueled with Gaseous Fuels

Energies ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1916
Author(s):  
Paulina Grzelak ◽  
Sławomir Taubert
Keyword(s):  
Fuel Consumption ◽  
Exhaust System ◽  
Exhaust Emissions ◽  
Pollutant Emissions ◽  
Separate Analysis ◽  
Liquefied Petroleum Gas ◽  
Normative Documents ◽  
Gaseous Fuels ◽  
Driving Cycles ◽  
Type Approval

The methodologies for calculating exhaust emissions and fuel consumption, which are given in the normative documents, do not take into account the fact that vehicles equipped with liquefied petroleum gas (LPG) or compressed natural gas (CNG) systems are fueled with petrol after a cold start. When calculating exhaust emissions and fuel consumption of LPG or CNG-powered vehicles, it is assumed that they result from the combustion of gaseous fuel only. This simplification leads to an incorrect determination of the emissions and fuel consumption values, as the formulas for calculating these values differ depending on the fuel type. This article presents the results of tests aimed at checking how that factor affects the value of emissions and fuel consumption calculated in the driving cycles used in the type-approval tests. In order to estimate the error resulting from this simplification, the tests of exhaust emissions and fuel consumption of a vehicle equipped with an LPG system were carried out. The tests were carried out on a chassis dynamometer in the worldwide harmonized light vehicles test cycle (WLTC) used in the type approval tests. In the tested vehicle, the CO, total hydrocarbons (THC), NOx and CO2 emissions calculated with the normative method were approx. 7% lower than the values calculated with the corrected method. For this reason, there is a need to develop a measurement method that allows for a separate analysis of the phase in which the vehicle is fueled with gasoline. This will allow the elimination of errors in the current normative method of calculating pollutant emissions from the exhaust system and fuel consumption of vehicles fueled with gaseous fuels.

scholarly journals Investigation of Driving Behavior on Performance and Fuel Consumption of Light-Duty Vehicle

2020 ◽  
Vol 13 (4) ◽  
pp. 102-113
Author(s):  
Loay M. Mubarak ◽  
Ahmed Al-Samari
Keyword(s):  
Fuel Consumption ◽  
Real World ◽  
Driving Behavior ◽  
Driving Cycle ◽  
Aggressive Driving ◽  
Data Logger ◽  
Passenger Cars ◽  
Driving Cycles ◽  
Light Duty ◽  
Light Duty Vehicle

This manuscript instrumented two light-duty passenger cars to construct real-world driving cycles for the Baghdad-Basrah highway road in Iraq using a data logger. The recorded data is conducted to obtain typical speed profiles for each vehicle. Each of the recruited vehicles is modelized using Advanced Vehicle Simulator and conducted on the associated created driving cycle to investigate fuel economy and analyze performance. Moreover, to inspect the influence of driving behavior on fuel consumption and emissions, the simulation process is re-implemented by substituting the conducted real-world driving cycle. The analyses are done for the first and second stages of simulation predictions to explore the fuel-penalty of aggressive driving behavior. The analysis for substitution predictions showed that fuel consumption could be reduced by 12.8% due to conducting vehicle under the more consistent real-world driving cycle. However, conducting vehicle under the more aggressive one would increase fuel consumption by 14.6%. The associated emissions change prediction due to the substitution is also achieved and presented.

Effect of tire slip losses on the energy demand and fuel consumption of a light-duty vehicle

2021 ◽  
pp. 095440702110561
Author(s):  
Stefano d’Ambrosio ◽  
Roberto Vitolo
Keyword(s):  
Fuel Consumption ◽  
Working Conditions ◽  
Energy Demand ◽  
Tire Pressure ◽  
Driving Cycles ◽  
Light Duty ◽  
Vehicle Loading ◽  
Wide Range ◽  
Total Vehicle ◽  
Light Duty Vehicle

The contribution of the tire-road slip of traction wheels to the total resistance opposing the motion of a light-duty commercial vehicle has been investigated through the simulation of several homologation and custom driving cycles. The calculation of the contribution of the tire slip losses was based on the estimation of the longitudinal tire slip, by means of Pacejka’s MF5.2 tire model. In this work, the computational steps required to evaluate this contribution were implemented in a previously developed fuel consumption simulation tool. Simulations were performed under several vehicle loading conditions and tire inflation pressures on traction and non-traction wheels, and considering different tire-road adherence conditions, in order to obtain a characterization of the tire slip losses over a wide range of working conditions. An analysis of the results shows that, although the contribution of tire slip losses to the total vehicle energy demand and fuel consumption may be relevant – especially under low-load, low adherence conditions – the sensitivity of the average on-cycle vehicle energy/fuel consumption to changes in the tire inflation pressure is only affected slightly by tire slip losses. Therefore, tire slip losses can be neglected in practice, when the aim of a simulation is to optimize the tire pressure to achieve average vehicle working conditions over a driving cycle.

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