Combined aftercooler system with shared fans
First Claim
1. A cooling system for an internal combustion engine having a supercharger for increasing the density of intake air supplied to the engine, the cooling system comprising:
- a liquid cooling subsystem including at least one liquid cooling loop having a pump communicating with a radiator and the engine for unidirectional circulation of liquid coolant;
an intake air cooling subsystem including an air-to-water aftercooler having an intake air side receiving intake air from the supercharger and a water side receiving liquid coolant from the liquid cooling subsystem, and an air-to-air aftercooler having an intake air side receiving intake air from the air-to-water aftercooler;
a shared fan circulating air flow through cooling air sides of the air-to-air aftercooler and the radiator;
an air distribution control operative to control the amount of circulated air flow directed from the shared fan to the cooling air sides of the radiator and the air-to-air aftercooler;
the air-to-water aftercooler being operative to exchange heat between the intake air and liquid coolant; and
the air-to-air aftercooler being operative to exchange heat between the intake air and circulated air.
6 Assignments
0 Petitions
Accused Products
Abstract
A cooling system including an intake air cooling subsystem and a liquid cooling subsystem for controlling intake air temperatures in a supercharged internal combustion diesel locomotive engine. The intake air cooling subsystem includes an air-to-water aftercooler and an air-to-air aftercooler having intake air sides connected to receive intake air flow in series between a supercharger and an engine. The liquid cooling subsystem includes at least one liquid cooling loop having a pump, a radiator and a water coolant side of the air-to-water aftercooler. At least one shared fan circulates air flow to the cooling air sides of the air-to-air aftercooler and the radiator. An optional air distribution control selectively directs circulated air flow between the air-to-air aftercooler, the radiator and other optional components of the cooling system.
31 Citations
15 Claims
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1. A cooling system for an internal combustion engine having a supercharger for increasing the density of intake air supplied to the engine, the cooling system comprising:
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a liquid cooling subsystem including at least one liquid cooling loop having a pump communicating with a radiator and the engine for unidirectional circulation of liquid coolant; an intake air cooling subsystem including an air-to-water aftercooler having an intake air side receiving intake air from the supercharger and a water side receiving liquid coolant from the liquid cooling subsystem, and an air-to-air aftercooler having an intake air side receiving intake air from the air-to-water aftercooler; a shared fan circulating air flow through cooling air sides of the air-to-air aftercooler and the radiator; an air distribution control operative to control the amount of circulated air flow directed from the shared fan to the cooling air sides of the radiator and the air-to-air aftercooler; the air-to-water aftercooler being operative to exchange heat between the intake air and liquid coolant; and the air-to-air aftercooler being operative to exchange heat between the intake air and circulated air. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An intake air cooling system for internal combustion engine having a supercharger for increasing the density of intake air supplied to the engine, the cooling system comprising:
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a liquid cooling subsystem including at least one liquid cooling loop having an aftercooler pump communicating with a radiator for unidirectional circulation of liquid coolant; an intake air subsystem including an air-to-water aftercooler having an intake air side receiving intake air from the supercharger and a water side receiving liquid coolant from the liquid cooling subsystem, and an air-to-air aftercooler having an intake air side receiving intake air from the air-to-water aftercooler; and a shared fan circulating air flow through cooling air sides of the air-to-air aftercooler and the radiator; an air distribution control operative to control the amount of circulated air flow directed from the shared fan to the cooling air sides of the air-to-air aftercooler and the radiator; the air-to-water aftercooler being operative to exchange heat between the intake air and liquid coolant; the air-to-air aftercooler being operative to exchange heat between the intake air and circulated air. - View Dependent Claims (9, 10, 11)
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12. A cooling system for an internal combustion engine having a supercharger for increasing the density of intake air supplied to the engine, the cooling system comprising:
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a liquid cooling subsystem including at least one liquid cooling loop having a pump communicating with a radiator and the engine for unidirectional circulation of liquid coolant; an intake air cooling subsystem including an air-to-water aftercooler having an intake air side receiving intake air from the supercharger and a water side receiving liquid coolant from the liquid cooling subsystem, and an air-to-air aftercooler having an intake air side receiving intake air from the air-to-water aftercooler; a shared fan circulating air flow through cooling air sides of the air-to-air aftercooler and the radiator; a dynamic brake grid positioned in parallel with the cooling air sides of the air-to air aftercooler and the radiator to receive circulated air flow from the shared fan; the air-to-water aftercooler being operative to exchange heat between the intake air and liquid coolant; and the air-to-air aftercooler being operative to exchange heat between the intake air and circulated air. - View Dependent Claims (13)
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14. A cooling system for an internal combustion engine having a supercharger for increasing the density of intake air supplied to the engine, the cooling system comprising:
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a liquid cooling subsystem including a first liquid cooling loop comprising a main pump communicating with a main radiator and the engine for unidirectional circulation of liquid coolant, and a second liquid cooling loop comprising an afterccoler pump communicating with an aftercooler radiator for unidirectional circulation of liquid coolant; a valve apparatus linking the first and second cooling loops and operative to control liquid coolant flow between the cooling loops; an intake air cooling subsystem including an air-to-water aftercooler having an intake air side receiving intake air from the supercharger and a water side receiving liquid coolant from the second cooling loop, and an air-to-air aftercooler having an intake air side receiving intake air from the air-to-water aftercooler; a shared fan circulating air flow through cooling air sides of the air-to-air radiator, the aftercooler radiator, and the main radiator; an air distribution control operative to control the amount of circulated air flow directed from the shared fan to the cooling air sides of the air-to-air radiator, the aftercooler radiator, and the main radiator; the air-to-water aftercooler being operative to exchange heat between the intake air and liquid coolant; and the air-to-air aftercooler being operative to exchange heat between the intake air and circulated air.
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15. A cooling system for an internal combustion engine having a supercharger for increasing the density of intake air supplied to the engine, the cooling system comprising:
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a liquid cooling subsystem including a first liquid cooling loop having a pump communicating with the engine and a main radiator and the engine for unidirectional circulation of liquid coolant, and a second liquid cooling loop including the pump, the engine, the main radiator, a supplemental low temperature radiator and a water cooling side of an air-to water aftercooler for unidirectional circulation of liquid coolant; an intake air cooling subsystem including an air-to-water aftercooler having an intake air side receiving intake air from the supercharger, and an air-to-air aftercooler having an intake air side receiving intake air from the air-to-water aftercooler; a shared fan circulating air flow through cooling air sides of the air-to-air radiator, the aftercooler radiator, and the main radiator; an air distribution control operative to control the amount of circulated air flow directed from the shared fan to the cooling air sides of the air-to-air radiator, the aftercooler radiator, and the main radiator; the air-to-water aftercooler being operative to exchange heat between the intake air and liquid coolant; and the air-to-air aftercooler being operative to exchange heat between the intake air and circulated air.
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Specification