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

The paper summarizes exhaust emissions measurements on two diesel-electric locomotives and one diesel-hydraulic railcar, each tested for several days during scheduled passenger service. While real driving emissions of buses decrease with fleet turnaround and have been assessed by many studies, there are virtually no realistic emissions data on diesel rail vehicles, many of which are decades old. The engines were fitted with low-power portable online monitoring instruments, including a portable Fourier Transform Infra Red (FTIR) spectrometer, online particle measurement, and in two cases with proportional particle sampling systems, all installed in engine compartments. Due to space constraints and overhead electric traction lines, exhaust flow was computed from engine operating data. Real-world operation was characterized by relatively fast power level transitions during accelerations and interleaved periods of high load and idle, and varied considerably among service type and routes. Spikes in PM emissions during accelerations and storage of PM in the exhaust were observed. Despite all engines approaching the end of their life, the emissions per passenger-km were very low compared to automobiles. Tests were done at very low costs with no disruption of the train service, yielded realistic data, and are also applicable to diesel-hydraulic units, which cannot be tested at standstill.

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

IOP Conference Series Materials Science and Engineering ◽

10.1088/1757-899x/774/1/012137 ◽

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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Real-world fuel efficiency and exhaust emissions of light-duty diesel vehicles and their correlation with road conditions

Journal of Environmental Sciences ◽

10.1016/s1001-0742(11)60878-4 ◽

2012 ◽

Vol 24 (5) ◽

pp. 865-874 ◽

Cited By ~ 57

Author(s):

Jingnan Hu ◽

Ye Wu ◽

Zhishi Wang ◽

Zhenhua Li ◽

Yu Zhou ◽

...

Keyword(s):

Real World ◽

Fuel Efficiency ◽

Exhaust Emissions ◽

Diesel Vehicles ◽

Light Duty

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Impacts of ambient temperature, DPF regeneration, and traffic congestion on NOx emissions from a Euro 6-compliant diesel vehicle equipped with an LNT under real-world driving conditions

Atmospheric Environment ◽

10.1016/j.atmosenv.2018.11.029 ◽

2019 ◽

Vol 200 ◽

pp. 1-14 ◽

Cited By ~ 22

Author(s):

Jinyoung Ko ◽

Cha-Lee Myung ◽

Simsoo Park

Keyword(s):

Ambient Temperature ◽

Real World ◽

Traffic Congestion ◽

Nox Emissions ◽

Dpf Regeneration ◽

Driving Conditions ◽

Diesel Vehicle

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Modal analysis of real-time, real world vehicular exhaust emissions under heterogeneous traffic conditions

Transportation Research Part D Transport and Environment ◽

10.1016/j.trd.2017.06.015 ◽

2017 ◽

Vol 54 ◽

pp. 397-409 ◽

Cited By ~ 17

Author(s):

Rohit Jaikumar ◽

S.M. Shiva Nagendra ◽

R. Sivanandan

Keyword(s):

Modal Analysis ◽

Real Time ◽

Real World ◽

Exhaust Emissions ◽

Heterogeneous Traffic ◽

Traffic Conditions ◽

Vehicular Exhaust

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Evaluation of Exhaust Emissions from Three Diesel-Hybrid Cars and Simulation of After-Treatment Systems for Ultralow Real-World NOx Emissions

Environmental Science & Technology ◽

10.1021/acs.est.6b03585 ◽

2016 ◽

Vol 50 (23) ◽

pp. 13151-13159 ◽

Cited By ~ 10

Author(s):

Vicente Franco ◽

Theodora Zacharopoulou ◽

Jan Hammer ◽

Helge Schmidt ◽

Peter Mock ◽

...

Keyword(s):

Real World ◽

Exhaust Emissions ◽

Nox Emissions

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Automotive Diesel Fuel Emissions Durability Trends

Journal of Engineering for Gas Turbines and Power ◽

10.1115/1.2816702 ◽

1996 ◽

Vol 118 (3) ◽

pp. 680-691 ◽

Cited By ~ 1

Author(s):

R. E. Olsen ◽

H. K. Newhall ◽

G. A. Eberhard

Keyword(s):

Field Test ◽

Diesel Fuel ◽

Real World ◽

Exhaust Emissions ◽

Fuel Composition ◽

Deposit Formation ◽

Corrosion Rates ◽

Engine Design

Regional mandates for reduced exhaust emissions, sustainable over the useful lives of vehicles or equipment, are influencing diesel fuel compositions and engine designs. Laboratory and real-world examples are provided to illustrate that both fuel composition and engine design can impact injector deposit formation and injector spray-hole corrosion rates, with associated potentials for deterioration of emissions compliance. Potential impacts of poor lubricity fuels are also discussed. A field test in California of a deposit control additive in trucks with Cummins L10 engines is detailed, including measurements of transient cycle emissions performance using conventional and reformulated fuels.

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