CPC F01N 9/00 (2013.01) [F01N 3/2086 (2013.01); F01N 2430/00 (2013.01); F01N 2900/1626 (2013.01); F02D 41/0255 (2013.01); F02D 2200/0802 (2013.01)] | 20 Claims |
1. A method of controlling light-off of a catalytic converter in an exhaust system of an internal combustion engine (ICE), the method comprising:
identifying, via an electronic controller, a start of the ICE requiring a light-off of the catalytic converter;
regulating an exhaust-flow control valve, via the electronic controller, to increase exhaust gas backpressure in the exhaust system in response to the identified start of the ICE;
regulating combustion inside the ICE, via the electronic controller, to increase enthalpy of the ICE;
detecting, via the electronic controller, the light-off of the catalytic converter;
regulating the exhaust-flow control valve, via the electronic controller, to decrease the exhaust gas backpressure in the exhaust system in response to the detected light-off of the catalytic converter; and
regulating combustion inside the ICE, via the electronic controller, to decrease enthalpy of the ICE in response to the detected light-off of the catalytic converter.
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