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US 11,982,216 B2Granted
Emissions reduction systems and methods
OwnerDavid A Endrigoinventor
Life of this patent
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Abstract
An internal combustion engine emissions reduction system in which a emissions passing through a second catalyst element having a second catalyst function are mixed with emissions passing through a first catalyst element having a first catalyst function.
Claims20
An internal combustion engine emission reduction system, comprising
- a first catalyst having a first catalytic function and disposed within a body between a primary emission inlet and a primary emission outlet such that all of the emissions flowing into a primary emission inlet flow through the first catalyst element;
- an electric heating element disposed within the first catalyst for preheating the first catalyst to at least a minimum temperature;
- a second catalyst disposed within the body and about the first catalyst, and having a second catalytic function that is different from the first catalytic function;
- a wall disposed between the first catalyst and the second catalyst, wherein the wall transfers heat between the first and second catalysts and prevents emissions flowing in the first catalyst from leaking into the second catalyst;
- a flow path within the body such that emissions flowing through the second catalyst flow into the first catalyst along with emissions from the primary emissions inlet;
- and
- a fluid path formed on an outer surface of the body for heating a fluid with waste heat from the system.
4 more elements
An emission reduction system for an internal combustion engine, comprising
- a first catalyst having a first catalytic function and disposed within a body between a primary emission inlet and a primary emission outlet;
- an electric heating element disposed within the first catalyst for preheating the first catalyst to at least a minimum temperature;
- a second catalyst disposed within the body and about an outer surface of the first catalyst, the second catalyst having a second catalytic function that is different from the first catalytic function;
- the first and second catalysts arranged within the body such that a portion of the emissions entering the primary emission inlet pass through the first catalyst in a first direction and another portion of the emissions entering the primary emission inlet pass through the second catalyst in the first direction;
- a recycle flow path disposed within the body and configured to divert all of the emissions flowing out of the second catalyst into the recycle flow path;
- a secondary emissions inlet disposed within the body and associated with the primary emission inlet, wherein emissions flowing into the first catalyst are mixed with emissions exiting the secondary emissions inlet;
- and
- a fluid path formed on an outer surface of the body for heating a fluid with waste heat from the system.
5 more elements
Dependencies are inferred from the claim text.