Integrated and separable EGR distribution manifold
AssigneeCummins Engine Company, Inc.
InventorsGlen T. Haegele, Paul R. Miller, Long Kung Hwang
Life of this patent
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Abstract
An exhaust gas recirculation (EGR) manifold received within an intake manifold. The EGR manifold includes a plurality of holes for delivery of recirculated exhaust gas within the flowpath of the intake manifold. Both linear and round shapes are contemplated for the EGR manifold.
Claims35
An apparatus for an internal combustion engine with a plurality of cylinders, intake ports, and intake valves, comprising:
- an intake manifold attached to the engine, said intake manifold having a cavity for receiving an exhaust gas recirculation manifold;
- a removable exhaust gas recirculation manifold insertable in the cavity of said intake manifold, said exhaust gas recirculation manifold defining a plurality of outlet holes for delivery of exhaust gas to said intake manifold;
- wherein said exhaust gas recirculation manifold is removable from said intake manifold without removing said intake manifold from the engine;
- a first supply of exhaust gas at a first temperature;
- and
- a second supply of exhaust gas at a second temperature, the second temperature being at least 100 degrees Fahrenheit cooler than the first temperature;
- wherein said exhaust gas recirculation manifold has a first inlet for said first supply and a second inlet for said second supply.
An apparatus for an internal combustion engine having an intake manifold and a plurality of cylinders, intake ports, and intake valves, comprising:
- a separable body defining an internal passageway and a plurality of delivery holes, said internal passageway being in fluid communication with said plurality of delivery holes, said body being insertable in the inlet manifold, said delivery holes providing flow of exhaust gas to the cylinders;
- a first supply of exhaust gas at a first temperature;
- and
- a second supply of exhaust gas at a second temperature, the second temperature being at least 100 degrees Fahrenheit cooler than the first temperature;
- wherein said body has a first inlet for said first supply and a second inlet for said second supply.
An apparatus for recirculating exhaust gas in an internal combustion engine having a plurality of cylinders and intake valves, comprising:
- a first supply of exhaust gas at a first temperature;
- a second supply of exhaust gas at a second temperature, the second temperature being at least 100 degrees Fahrenheit cooler than the first temperature;
- an intake manifold capable of receiving an exhaust gas recirculation manifold;
- and
- an exhaust gas recirculation manifold received by said intake manifold, said exhaust gas recirculation manifold having a first inlet in fluid communication with said first supply and a second inlet in fluid communication with said second supply, said exhaust gas recirculation manifold defining at least two outlet holes.
An apparatus for recirculating exhaust gas in an internal combustion engine having a plurality of cylinders and intake valves, comprising:
- an intake manifold having a cavity for receiving an exhaust gas recirculation manifold;
- and
- a removable exhaust gas recirculation manifold insertable in the cavity of said intake manifold, said exhaust gas recirculation manifold having a plurality of inlets for exhaust gas, said exhaust gas recirculation manifold defining an outlet hole for delivery of recirculated exhaust gas into said intake manifold.
A method for recirculating exhaust gas to the intake manifold of an internal combustion engine, comprising:
- fabricating an exhaust gas recirculation manifold;
- inserting the exhaust gas recirculation manifold into a tool used for molding or casting an intake manifold;
- and
- casting at least a portion of the intake manifold around a portion of the exhaust gas recirculation manifold.
Dependencies are inferred from the claim text.