A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks

Pondicherry, Rasik; Besch, Marc; Thiruvengadam, Arvind; Carder, Daniel K.

doi:10.1016/j.atmosenv.2020.118169

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…Furthermore, the altitude difference between Islamabad and the Khunjerab Pass strongly affects vehicular emission characteristics because high altitudes affect driving patterns and modify the load and pressure conditions inside combustion engines [ 12 , 16 ]. Both regulated and unregulated emissions are substantially affected by altitude changes [ 17 ].…”

Section: Introductionmentioning

confidence: 99%

Altitude-dependent gaseous emissions from freight trucks along the China-Pakistan Economic Corridor in Pakistan

Shaik

He²,

Deng³

et al. 2023

Environmental Science and Ecotechnology

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Section: Introductionmentioning

confidence: 99%

Altitude-dependent gaseous emissions from freight trucks along the China-Pakistan Economic Corridor in Pakistan

Shaik

He²,

Deng³

et al. 2023

Environmental Science and Ecotechnology

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“…The current NTE procedures require the engine operation to stay within the NTE control area for over 30 or more continuous seconds and allow data to be excluded from the evaluation of compliance, such as data generated under active diesel particulate filter (DPF) regeneration events. Consequently, typically less than 10% of the engine operation is evaluated by the NTE method. , The TBSP is designed to understand the deterioration of emission control systems of 2010 and newer MY on-road HDDVs. Trucks in the TBSP were carefully selected to represent a variety of HDDVs operating in California and may include vehicles with potential emission-related malfunctions.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, typically less than 10% of the engine operation is evaluated by the NTE method. 10,11 The TBSP is designed to understand the deterioration of emission control systems of 2010 and newer MY on-road HDDVs. Trucks in the TBSP were carefully selected to represent a variety of HDDVs operating in California and may include vehicles with potential emissionrelated malfunctions.…”

Section: ■ Introductionmentioning

confidence: 99%

Assessment of In-Use NOx Emissions from Heavy-Duty Diesel Vehicles Equipped with Selective Catalytic Reduction Systems

Tan

Yoon

Ruehl

et al. 2021

Environ. Sci. Technol.

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This work evaluated the nitrogen oxide (NOx) emissions of 277 heavy-duty diesel vehicles (HDDVs) from three portable emission measurement system testing programs. HDDVs in these programs were properly maintained before emission testing, so the malfunction indicator lamp (MIL) was not illuminated. NOx emissions of some HDDVs were significantly higher than the certification standard even during hot operations where exhaust temperature was ideal for selective catalytic reduction to reduce NOx. For engines certified to the 0.20 g/bhp-hr NOx standard, hot operation NOx emissions increased with engine age at 0.081 ± 0.016 g/bhp-hr per year. The correlation between emissions and mileage was weak because six trucks showed extraordinarily high apparent emission increase rates reaching several multiples of the standard within the first 15,000 miles of operation. The overall annual increase in NOx emissions for the HDDVs in this study was two-thirds of what was observed in real-world emissions for HDDVs at the Caldecott Tunnel over the past decade. The vehicles at the Caldecott Tunnel would include those without proper maintenance, and the inclusion of these vehicles possibly explains the difference in the rate of emission increase. The results suggest that HDDVs need robust strategies to better control in-use NOx emissions.

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Optimizing IC engine efficiency: A comprehensive review on biodiesel, nanofluid, and the role of artificial intelligence and machine learning

Soudagar,

Shelare,

Marghade

et al. 2024

Energy Conversion and Management

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A Vehicle Activity-based Windowing approach to evaluate real-world NOx emissions from Modern Heavy-duty Diesel Trucks

Cited by 6 publications

References 14 publications

Altitude-dependent gaseous emissions from freight trucks along the China-Pakistan Economic Corridor in Pakistan

Altitude-dependent gaseous emissions from freight trucks along the China-Pakistan Economic Corridor in Pakistan

Assessment of In-Use NOx Emissions from Heavy-Duty Diesel Vehicles Equipped with Selective Catalytic Reduction Systems

Optimizing IC engine efficiency: A comprehensive review on biodiesel, nanofluid, and the role of artificial intelligence and machine learning

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