| CPC F02D 41/064 (2013.01) [F02D 41/0025 (2013.01); F02D 41/0255 (2013.01); F02D 41/38 (2013.01); F02M 27/04 (2013.01); F01N 2240/34 (2013.01); F01N 2240/40 (2013.01); F01N 2610/03 (2013.01); F01N 2610/04 (2013.01); F01N 2610/1406 (2013.01); F01N 2900/1626 (2013.01); F02D 2013/0292 (2013.01); F02D 41/06 (2013.01); F02D 41/068 (2013.01)] | 20 Claims |
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1. An internal combustion engine system comprising:
an internal combustion engine;
an exhaust aftertreatment system with a catalytic converter configured to receive exhaust gas from the internal combustion engine;
a light-off catalyst system including a canister with an electrolyzer therein configured to perform an electrolysis of water to produce a mixture of pressurized hydrogen and oxygen gases, which is stored within the canister;
a conduit in fluid communication between the canister and an intake of the internal combustion engine; and
a controller configured to supply the mixture of hydrogen and oxygen gases to the engine intake during a cold start to facilitate rapidly warming the catalytic converter to a light-off temperature.
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11. A method of performing a cold start catalyst light-off for a vehicle having an internal combustion engine and an exhaust aftertreatment system with a catalytic converter, the method comprising:
performing, at an electrolyzer disposed within a canister, an electrolysis operation to generate a pressurized mixture of hydrogen and oxygen gases from a supply of water, and subsequently storing the pressurized mixture of hydrogen and oxygen gases within the canister;
detecting, by a controller having one or more processors, a vehicle cold start condition; and
supplying the mixture of hydrogen and oxygen gases to an intake of the engine for combustion therein to facilitate rapidly warming the catalytic converter to a light-off temperature.
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