Cooling System and Method for a Vehicle Engine
First Claim
1. A cooling system for an internal combustion engine, the internal combustion engine having a cylinder block and cylinder head, the system comprising:
- a first pump in fluid communication with the engine, the first pump being an electric pump;
a second pump in fluid communication with the engine, the second pump being an electric pump;
a control unit that governs the first pump and second pump; and
at least two fluid return channels configured to recirculate fluid to the pumps;
wherein the first pump is configured to supply fluid to the cylinder head;
wherein the second pump is configured to supply fluid to the cylinder block.
1 Assignment
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Accused Products
Abstract
The present invention relates to a cooling system for an internal combustion engine. The cooling system can be used in a hybrid electric vehicle. The system includes electric pumps in fluid communication with the engine and a control unit that governs the pumps. The pumps can be configured to supply fluid to either a cylinder block or cylinder head and backflow fluid through either the cylinder block or cylinder heads. Various arrangements of electrical and mechanical pumps are disclosed to control fluid flow and pressure.
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Citations
21 Claims
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1. A cooling system for an internal combustion engine, the internal combustion engine having a cylinder block and cylinder head, the system comprising:
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a first pump in fluid communication with the engine, the first pump being an electric pump; a second pump in fluid communication with the engine, the second pump being an electric pump; a control unit that governs the first pump and second pump; and at least two fluid return channels configured to recirculate fluid to the pumps; wherein the first pump is configured to supply fluid to the cylinder head; wherein the second pump is configured to supply fluid to the cylinder block. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A cooling system for an internal combustion engine, comprising:
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at least three electrical water pumps arranged in parallel with respect to each other; a mechanical water pump in fluid communication with the three electrical water pumps; and a control unit that governs the electrical water pumps. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification