Method of controlling the concentration of nitrogen oxides,...

Method of controlling the electric heating of a catalytic conver

Method of controlling the temperature of an exhaust gas probe

Method of converting a solid nitrogen-containing reducing...

Method of detecting failure in a secondary air supply system for

Method of detecting failure of humidity sensor

Method of determining abnormality in particulate filter

Method of determining catalytic converter efficiency on computer

Method of determining emission control system operability

Method of determining the amount of particulate accumulated...

Method of detoxification of exhaust gas from an internal combust

Method of diagnosing a catalytic converter

Method of diagnosing a catalytic converter

Method of diagnosing an NOx storage catalytic converter...

Method of diagnosing an NOX storage catalytic converter...

Method of diagnosing the efficiency of an exhaust gas stoichiome

Method of dispensing fuel into transient flow of an exhaust...

Method of dispensing fuel into transient flow of an exhaust...

Method of electronic fuel injection feedback control

Method of estimating soot accumulation amount of exhaust gas...