Reagent refill and supply system for an SCR exhaust aftertreatment system
OwnerTodd Sheridan, Laszlo Tikk +1inventors
InventorsTodd Sheridan, Laszlo Tikk, Rod Radovanovic
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Abstract
An internal combustion engine includes an exhaust manifold, and a selective catalytic reduction exhaust aftertreatment system. The selective catalytic reduction exhaust aftertreatment system includes a reduction catalytic converter in communication with the exhaust manifold; a reagent holding tank in fluid communication with the reduction catalytic converter; and a reagent supply canister selectively and removably couplable with the reagent holding tank.
Claims47
An internal combustion engine, comprising:
- an exhaust manifold;
- and
- a selective catalytic reduction exhaust aftertreatment system, including:
- a reduction catalytic converter in communication with said exhaust manifold;
- a reagent holding tank in fluid communication with said reduction catalytic converter;
- and
- a reagent supply canister selectively and removably couplable with said reagent holding tank.
An internal combustion engine, comprising:
- an exhaust manifold;
- and
- a selective catalytic reduction exhaust aftertreatment system, including:
- a reduction catalytic converter in communication with said exhaust manifold;
- and
- a reagent holding tank in communication with said reduction catalytic converter, said reagent holding tank including a refill head selectively couplable with a reagent supply canister, said refill head being substantially sealed with said reagent supply canister when coupled with said reagent supply canister, and substantially sealed with an ambient environment when not coupled with said reagent supply canister.
An exhaust aftertreatment system for an internal combustion engine, comprising:
- a reduction catalytic converter;
- a reagent holding tank in communication with said reduction catalytic converter;
- and
- a reagent supply canister selectively and removably couplable with said reagent holding tank.
A method of operating an internal combustion engine, comprising the steps of:
- treating exhaust gas with a selective catalytic reduction system including a reduction catalytic converter;
- supplying a reagent to said reduction catalytic converter from a reagent holding tank;
- coupling a reagent supply canister with a refill head on said reagent holding tank;
- and
- refilling said reagent holding tank with reagent from said reagent supply canister.
Dependencies are inferred from the claim text.