SIMCAT
Euro6
US10
4
PM
NOx
MATLAB
DOC, DPF, SCR, AMOX
NOx NH3
1
DPF
DOC
AMOX
TNO
Tire4f)
SCR
Modelled aspects
Reactions
• Urea thermolysis
• HNCO hydrolysis
• NH3 adsorption/desorption
• NOx conversion
• NH3 oxidation
• Heat: convection, conduction, ambient loss and reaction heat
• Back pressure
H4N2CO
NH3 + HNCO
HNCO + H2O
NH3 + CO2
4 NH3 + 4 NO + O2
4 N2 + 6 H2O
2 NH3 + NO + NO2
2 N2 + 3 H2O
8 NH3 + 6 NO2
7 N2 + 12 H2O
4 NH3 + 3 O2
2 N2 + 6 H2O
4 NH3 + 5 O2
4 NO + 6 H2O
SCR
NO
SCR
DPF
SIMCAT
Tailpipe
emissions
Urea dosing
strategy (S/W)
Engine out
measurements
Urea dosing
system (H/W)
Input vectors:
Output vectors:
–
Emissions
–
NOx [g/kWh]
–
Exhaust flow
–
Temperature [°C]
–
Temperature
–
Pressures [kPa]
–
Pressure
–
etc.
Measurement
DOC
DPF
SIMCAT catalyst
models
Simulation
SCR
AMOX
–
NH3 slip [ppm]
–
etc.
TASS International
URL http://www.tass-safe.jp
Email [email protected]
TEL 045-473-7955
SCR/AMOX
DOC/DPF
3
9
Test Data
File
Parameter
File
TNO Automotive
NO, NO2, NH3)
2014.4