Page 14 - Methods For Monitoring And Diagnosing The Efficiency Of Catalytic Converters A Patent - oriented Survey
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Symbols and Abbreviations
a : amplitude
A : Area
ArF : airhel ratio
b : amplitude
CA : Crank Angle
CARB : California Air Resources Board
CP : specific heat
CPU : Central processing unit
DF : Dilution factor
E : Heat
ECU : Electronic control unit
EHC : Electrically Heated Catalyst
EGO : Exhaust Gas Oxygen Sensor
EGR : Exhaust Gas Recirculation
EPA : Environmental Protection Agency of United States of America
EPO : European Patent Office
f : frequency
FTP : Federal Test Procedure
HEGO : Heated Exhaust Gas Oxygen Sensor
i : Integral
I : Electric current
I C.E. : Internal Combustion Engine
k : constant
KI : integration correction amount
K, : skip correction amount
L : length
LED : Light emitting diode
LEV : Low Emissions Vehicle
m : mass flow
MIL : malfunction indication lamp
NEEGO : Non-Equilibrium Exhaust Gas Oxygen Sensor
NEDC : New European Driving Cycle
OBD : On-Board Diagnostics
P : phase shift
0 : mass flow, volume flow, heat transfer rate
S : Area
SAE : Society of Automotive Engineers
SOF : Soluble Organic Fraction
SCR : Selective Catalytic Reduction
t : time
