Practicability of passenger vehicle driving emission tests according to new European Union procedures

Pielecha, Jacek; Jasiński, Remigiusz; Magdziak, Agnieszka

doi:10.1051/matecconf/201711800021

Cited by 14 publications

(3 citation statements)

References 9 publications

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“…Modern passenger vehicles must comply with emission norms in real driving conditions and extended environmental conditions relative to the pre-existing dynamometer tests (variable ambient temperature, pressure, congestion, driving style etc.) [12]. RDE road tests should therefore take into account all possible road situations while maintaining a set specific driving style, so that the obtained emission results are indicative of the vehicle technical characteristics [1].…”

Section: Introductionmentioning

confidence: 99%

The impact of drive mode of a hybrid drive system on the energy flow indicators in the RDE test

2018

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The drive to reduce fuel consumption of vehicles equipped with internal combustion engines leads to an increasing share of hybrid drives used in various means of transport. Such hybrid vehicles, thanks to the use of diesel-electric drive systems, allow for a fuel consumption reduction, and thus to reduce the carbon dioxide emissions. This fuel consumption reduction results from a specifically selected energy flow strategy in hybrid systems. This strategy was the focus of the research performed in order to identify the energy flow conditions in a hybrid drive system in driving conditions corresponding to the RDE test. A Lexus LS 500h vehicle was tested in two drive modes, while determining the related energy flow conditions, including the operating conditions of: electric motors, internal combustion engine and battery. Energy balance was determined taking into account the high voltage battery discharge and charging energy as well as the energy recovered during regenerative braking. It was found that in the RDE test conditions the vehicle is in electric mode for over 30% of the distance and 35% of the drive time, with the energy balance of the vehicle being positive (SOCend > SOCstart). Additionally, it was pointed out that the time spent in the electric mode when driving in urban conditions is about 50% and decreases to about 15% for highway conditions.

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Section: Introductionmentioning

confidence: 99%

The impact of drive mode of a hybrid drive system on the energy flow indicators in the RDE test

2018

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“…Under strict laboratory conditions, this variability can be small, but during the on-road testing, the environmental conditions and the trip characteristics are not well-controlled and might result in high vehicle emissions variability. Only a few studies have examined the variability of results following the same route and trying to keep all parameters similar [36,37]. A few researchers examined different routes with different trip characteristics [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Real-Driving Emissions (RDE) of a Gasoline Direct Injection (GDI) Vehicle at Different Routes in Europe

Giechaskiel,

Valverde,

Melas

et al. 2024

Energies

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On-road real-driving emissions (RDE) tests with portable emissions measurement systems (PEMS) are part of the vehicle emissions regulations in the European Union (EU). For a given vehicle, the final emission results depend on the influence of the ambient conditions and the trip characteristics (including the driver’s behaviour) on the vehicle performance and the instrument measurement uncertainty. However, there are not many studies that have examined the emissions variability of a single vehicle following different routes. In this study, a 1.2 L gasoline direct injection (GDI) Euro 5b passenger car without a particulate filter and a PEMS was circulated in seven European laboratories. At their premises, the laboratories performed two to five repetitions of on-road trips compliant with the EU RDE regulation. The ambient temperature ranged between 7 °C and 23 °C. The average emission levels of the vehicle were 135 g/km for CO2, 77 mg/km for CO, 55 mg/km for NOx, and 9.2 × 1011 #/km for particle number. The coefficient of variance in the emissions following the same route was 2.9% for CO2, 23.8% for CO, 23.0% for NOx, and 5.8% for particle number. The coefficient of variance in the emissions following different routes in Europe was 6.9% for CO2, 9.1% for CO, 0.0% for NOx, and 9.1% for particle number. The previous values include the specific vehicle emissions variability under the narrow test conditions of this study, but only partly the PEMS measurement uncertainty because the same instrument was used in all the trips. The results of this study can be used by laboratories conducting RDE tests to assess their uncertainty budget when testing or comparing vehicles of similar technology.

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“…Therefore, it seems reasonable to assess the impact of heavy vehicles performing transport work in diversified traffic conditions, done by measuring exhaust emissions using PEMS mobile analyzers [9]. This Measurements are currently performed for various groups of vehicles [4,7] in the field of approval and research purposes [6]. In the case of heavy-duty vehicles, the measurements are aimed at assessing the exhaust emission and fuel consumption under various operating conditionsurban driving, rural, an motorway [5,9].…”

Section: Introductionmentioning

confidence: 99%

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

Ziółkowski¹,

Fuć²,

Lijewski³

et al. 2020

Combustion Engines

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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.

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Practicability of passenger vehicle driving emission tests according to new European Union procedures

Cited by 14 publications

References 9 publications

The impact of drive mode of a hybrid drive system on the energy flow indicators in the RDE test

The impact of drive mode of a hybrid drive system on the energy flow indicators in the RDE test

Comparison of the Real-Driving Emissions (RDE) of a Gasoline Direct Injection (GDI) Vehicle at Different Routes in Europe

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

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