Exhaust gas recirculation cooler coolant plumbing configuration
AssigneeCummins Inc.
InventorsADAM C. CECIL, KRISTOPHER R. BARE
Life of this patent
Estimating the term…
Abstract
A cooling system for an engine is disclosed. In a first embodiment, the cooling system may comprise a heat exchanger, a pump coupled to the heat exchanger, an EGR cooler coupled to the pump, and a first valve coupled to the EGR cooler and the heat exchanger. When the first valve is in a first position, the first valve directs a coolant to the heat exchanger and when the first valve is in a second position, the heat exchanger is bypassed and coolant flows directly to the pump. It is an advantage for a cooling system to utilize a valve to maximize the rate a coolant flows throughout the system when the valve is in an open position and also to warm up an engine when the valve is in a closed position.
Claims20
A cooling system for use with an engine, the cooling system comprising:
- a heat exchanger;
- a pump coupled to the heat exchanger;
- an exhaust gas recirculation (EGR) cooler coupled to the pump;
- and
- a first valve between the EGR cooler and the heat exchanger wherein
- when the first valve is in a first position, the first valve directs a coolant to the heat exchanger and when the first valve is in a second position, the heat exchanger is bypassed and coolant flows directly to the pump.
A system, comprising:
- an engine, the engine having a cylinder head and a cylinder block;
- a cooling system coupled to and separate from the engine, the cooling system including:
- a heat exchanger;
- a pump in fluid coupled to the heat exchanger;
- an EGR cooler coupled to the pump;
- and
- a first valve between the EGR cooler and the pump and wherein when the first valve is in a first position, the first valve directs a coolant to the heat exchanger and when the first valve is in a second position, the heat exchanger is bypassed and coolant flows directly to the pump.
A method for cooling an engine, comprising:
- providing a heat exchanger, a pump, an EGR, and a first valve to form a cooling loop;
- directing a coolant to the heat exchanger when the first valve is in a first position;
- and
- bypassing the coolant and directing the coolant to the pump when the first valve is in a second position.
Dependencies are inferred from the claim text.