DOI: 10.5281/zenodo.16948158
title: Dataset on Experimental Investigation of Urea-Water Injection-Borne Particles in Selective Catalytic Reduction Systems of Hydrogen Combustion Engines

description: This dataset contains measurement data supporting the publication "Experimental Investigation of Urea-Water Injection-Borne Particles in Selective Catalytic Reduction Systems of Hydrogen Combustion Engines" published in the Fuel, 2026 (DOI: https://doi.org/10.1016/j.fuel.2026.138698).

The dataset includes time-averaged values collected under steady-state experimental conditions.

A brief explanation of the signal naming conventions is provided below. A more detailed description is available in the "Info" tab within the dataset. For comprehensive context, experimental setup, and methodology, please refer to the associated publication.

  


 
Unit
2
3
4
5
6


Engine Speed (set-point)
1/min
1200
1100
1150
1250
1100


Engine Torque (set-point)
Nm
760
680
480
553
568


Exhaust mass flow
kg/h
500
409
322
400
406


Exhaust gas temperature after DPF
°C
408
400
352
360
311




 

    


Category
Channel
Unit
Description


Hardware configuration
DOC
-
Diesel oxidation catalyst (DOC) used


DPF
-
Diesel particulate filter (DPF) used


Spray
-
Urea-water-solution (UWS) spray used


Mixer
-
Urea mixing unit used


SCR
-
Selective catalytic reduction (SCR) catalyst used


ASC
-
Ammonia slip catalyst (ASC) used


Operating point
OP
-
Engine operating point


PWR
kW
Engine power


MF_EXH
kg/h
Exhaust mass flow


T_ADPF
°C
Exhaust gas temperature after DPF


Measurement
-
Type of measurement


UWS
g/h
UWS rate


ANR
-
Ammonia to NOx ratio (ANR)


Solid particle number from AVL APC 489
C_PN10
1/cm^3
Particle number concentration (PN) at 10 nm cut-off size


C_PN23
1/cm^3
Particle number concentration (PN) at 23 nm cut-off size


NF_PN10
1/s
Particle number flow for PN10


NF_PN23
1/s
Particle number flow for PN23


BS_PN10
1/kWh
Particle number related to engine work for PN10


BS_PN23
1/kWh
Particle number related to engine work for PN23


Particle size distribution from TSI EEPS 3090
6,04
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 6,04 nm


6,98
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 6,98 nm


8,06
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 8,06 nm


9,31
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 9,31 nm


10,8
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 10,8 nm


12,4
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 12,4 nm


14,3
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 14,3 nm


16,5
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 16,5 nm


19,1
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 19,1 nm


22,1
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 22,1 nm


25,5
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 25,5 nm


29,4
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 29,4 nm


34
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 34 nm


39,2
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 39,2 nm


45,3
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 45,3 nm


52,3
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 52,3 nm


60,4
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 60,4 nm


69,8
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 69,8 nm


80,6
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 80,6 nm


93,1
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 93,1 nm


107,5
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 107,5 nm


124,1
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 124,1 nm


143,3
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 143,3 nm


165,5
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 165,5 nm


191,1
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 191,1 nm


220,7
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 220,7 nm


254,8
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 254,8 nm


294,3
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 294,3 nm


339,8
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 339,8 nm


392,4
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 392,4 nm


453,2
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 453,2 nm


523,3
1/cm^3
Normalized particle concentration (dN/dlogDp) for midpoint particle diameter (Dp) of 523,3 nm


Particle number from TSI EEPS 3090
Total_PN
1/cm^3
Total particle number


PN10
1/cm^3
Particle number concentration (PN) at 10 nm cut-off size


PN23
1/cm^3
Particle number concentration (PN) at 23 nm cut-off size


Temperatures in the exhaust aftertreatment system
T_BSCR
°C
Exhaust gas temperature before SCR catalyst


T_TP
°C
Exhaust gas temperature at tail pipe


T_1A
°C
Wall temperature at the mixing pipe with mixer


T_1B
°C
Wall temperature at the mixing pipe with mixer


T_1C
°C
Wall temperature at the mixing pipe with mixer


T_2A
°C
Wall temperature at the mixing pipe with mixer


T_2B
°C
Wall temperature at the mixing pipe with mixer


T_2C
°C
Wall temperature at the mixing pipe with mixer


T_3A
°C
Wall temperature at the mixing pipe with mixer


T_3B
°C
Wall temperature at the mixing pipe with mixer


T_3C
°C
Wall temperature at the mixing pipe with mixer


Pressure in the exhaust aftertreatment system
P_ADPF
mbar
Exhaust gas pressure after DPF


P_BSCR
mbar
Exhaust gas pressure before SCR catalyst


P_TP
mbar
Exhaust gas pressure at tail pipe


Gaseous emissions
NOX_BSCR
ppm
NOx emissions concentration before SCR catalyst


NO_TP
ppm
NO emissions concentration at tailpipe (TP)


NO2_TP
ppm
NO2 emissions concentration at tailpipe (TP)


NOX_TP
ppm
NOx emissions concentration at tailpipe (TP)


N2O_TP
ppm
N2O emissions concentration at tailpipe (TP)


NH3_TP
ppm
NH3 emissions concentration at tailpipe (TP)


HNO3_TP
ppm
HNO3 emissions concentration at tailpipe (TP)


CO2_TP
ppm
CO2 emissions concentration at tailpipe (TP)


H2O_TP
%
H2O emissions concentration at tailpipe (TP)