An engine cooling system may include a housing forming an enclosed duct having an air intake opening, an air intake door, an exhaust opening, and an exhaust door; at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening flows through the duct to co
An engine cooling system may include a housing forming an enclosed duct having an air intake opening, an air intake door, an exhaust opening, and an exhaust door; at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening flows through the duct to contact the at least one heat exchanger and exits the duct through the exhaust opening; and a controller connected to vary a degree that one or both of the air intake door and exhaust door is open to modulate a mass flow rate of ambient air contacting the at least one heat exchanger to vary a heat transfer from the at least one heat exchanger to the ambient air in the duct to maintain a temperature of a fluid within the at least one heat exchanger within a preferred temperature range.
대표청구항▼
1. An engine cooling system for a vehicle, the cooling system comprising: a combustion air intake line that draws air from a first air intake formed in a fuselage of the vehicle, the combustion air intake line connected to an engine intake manifold for a vehicle engine;a housing forming an enclosed
1. An engine cooling system for a vehicle, the cooling system comprising: a combustion air intake line that draws air from a first air intake formed in a fuselage of the vehicle, the combustion air intake line connected to an engine intake manifold for a vehicle engine;a housing forming an enclosed duct having a second air intake opening formed in the fuselage, an air intake door for selectively covering the second air intake opening, an exhaust opening, and an exhaust door for selectively covering the exhaust opening;at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening flows through the duct to contact the at least one heat exchanger and exits the duct through the exhaust opening, the at least one heat exchanger connected to cool the air in the combustion air intake line; anda controller connected to vary a degree that one or both of the air intake door and exhaust door is open to modulate a mass flow rate of ambient air contacting the at least one heat exchanger to vary a heat transfer from the at least one heat exchanger to the ambient air in the duct to maintain a temperature of a fluid within the at least one heat exchanger within a preferred temperature range. 2. The engine cooling system of claim 1, further comprising at least one radiator circulating coolant for the engine, the at least one radiator positioned in the duct such that ambient air entering the air intake opening contacts the at least one radiator and exits the duct through the exhaust opening; and the controller connected to vary a degree that one or both of the air intake door and the exhaust door is open to modulate a mass flow rate of ambient air contacting the at least one radiator to vary a heat transfer from the at least one radiator to the ambient air in the duct to maintain a temperature of a fluid within the at least one radiator within a preferred temperature range. 3. The engine cooling system of claim 2, wherein the cooling system provides cooling of two discrete cooling systems in the duct, a first cooling system to provide conditioned combustion air to an intake manifold of the engine and includes the at least one heat exchanger, and a second cooling system for the engine that includes the at least one radiator connected by a coolant line to the engine; and further comprising a temperature sensor to measure a temperature of coolant entering the engine. 4. The engine cooling system of claim 2, wherein the air intake door is positioned on the enclosed duct at the air intake opening upstream of the at least one heat exchanger and the at least one radiator; and the exhaust door is positioned on the enclosed duct at the exhaust opening downstream of the at least one heat exchanger and the at least one radiator. 5. The engine cooling system of claim 1, wherein the at least one heat exchanger includes at least one intercooler positioned within the duct; the combustion air intake line includes at least one turbocharger; and the at least one intercooler is connected to the combustion air intake line. 6. The engine cooling system of claim 5, wherein the combustion air intake line includes at least one bypass line connected to divert intake air in the combustion air intake line around the at least one intercooler, and a modulating valve; and the controller is connected to actuate the modulating valve to modulate an amount of combustion air diverted around the at least one intercooler through the at least one bypass line and an amount of combustion air flowing through the at least one intercooler. 7. The engine cooling system of claim 1, further comprising a check valve in the duct positioned downstream of the at least one heat exchanger. 8. The engine cooling system of claim 7, further comprising a blower connected in parallel with the check valve in the duct and configured to draw air in the duct into contact with the at least one heat exchanger. 9. The engine cooling system of claim 8, wherein the check valve is positioned adjacent the blower so that the blower and check valve span the duct downstream of the at least one heat exchanger. 10. The engine cooling system of claim 9, wherein the controller actuates the blower, the intake door, and the exhaust door. 11. The engine cooling system of claim 10, wherein the controller actuates the blower to draw ambient air across the at least one heat exchanger and out the exhaust opening, and creates a backpressure in a terminal segment of the duct downstream of the blower that closes the check valve to prevent air flow through the check valve in both a downstream and an upstream direction. 12. The engine cooling system of claim 11, wherein the controller is connected to modulate the blower to vary an amount of airflow across the at least one heat exchanger. 13. The engine cooling system of claim 1, wherein the at least one heat exchanger includes a first heat exchanger and a second heat exchanger; and wherein the combustion air intake line to the engine includes the first and the second heat exchangers, and first and second bypass lines around the first and the second heat exchangers, respectively; the first and the second bypass lines include first and second modulating valves, respectively; each of the first and the second modulating valves controlled by the controller to modulate an amount of combustion air diverted around the first and the second heat exchanger. 14. The engine cooling system of claim 13, wherein the controller is connected to vary the amount of combustion air through the first and second bypass lines in conjunction with varying the degree that one or both of the air intake door and exhaust door is open to modulate the mass flow rate of ambient air in the enclosed duct across the at least one heat exchanger to vary a heat transfer from the at least one heat exchanger to the ambient air in the duct to maintain a temperature of a fluid within the at least one heat exchanger within the preferred temperature range, while minimizing an amount of excrescence drag from the open intake door and the open exhaust door on an outer surface of an aircraft fuselage. 15. The engine cooling system of claim 14, further comprising a first temperature sensor downstream of the first heat exchanger and upstream of the second heat exchanger on the combustion air intake line; wherein the controller modulates a ratio of bypass air through the first bypass line to cooled air through the first heat exchanger by comparing a temperature detected by the first temperature sensor to a maximum permitted inlet temperature of the second heat exchanger. 16. The engine cooling system of claim 14, further comprising a second temperature sensor and a pressure sensor downstream of the second heat exchanger and upstream of the engine on the combustion air intake line; and wherein the controller is programmed with selected values for one or more of the temperature limit for an intake manifold for the engine, a desired intake pressure for the engine, and a desired mass and volumetric flow of combustion air for the engine. 17. The vehicle of claim 16, wherein the controller varies the degree that one or both of the intake door and exhaust door is open in order to modulate the mass flow rate of the ambient air in the duct across the at least one heat exchanger to maintain the temperature of the fluid within the at least one heat exchanger within the preferred temperature range, while minimizing an amount of excrescence drag from the open intake door and the open exhaust door on the outer surface of the fuselage. 18. A vehicle comprising: an internal combustion engine having an intake manifold;a combustion air intake line that draws air from a first air intake formed in a fuselage of the vehicle, the combustion air intake line connected to the engine intake manifold;a compartment having an enclosed duct with a second air intake opening formed in the fuselage, an air intake door for selectively covering the second air intake opening, an exhaust opening, and an exhaust door for selectively covering the exhaust opening;at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening flows through the duct to contact the at least one heat exchanger and exits the duct through the exhaust opening, the at least one heat exchanger to cool the air in the combustion air intake line; anda controller connected to vary a degree that one or both of the air intake door and exhaust door is open to modulate a mass flow rate of ambient air contacting the at least one heat exchanger to vary a heat transfer from the at least one heat exchanger to the ambient air in the duct to maintain a temperature of a fluid within the at least one heat exchanger within a preferred temperature range;wherein the vehicle is selected from an aircraft, a land vehicle, an amphibious vehicle, a marine vehicle, and a submarine vehicle. 19. A method for making a cooling system for an engine in a vehicle, the vehicle including a combustion air intake line that draws air from a first air intake formed in a fuselage of the vehicle, the combustion air intake line connected to an engine intake manifold for a vehicle engine, the method comprising: forming a housing having an enclosed duct including a second air intake opening formed in the fuselage, an air intake door for selectively covering the second air intake opening, an exhaust opening, and an exhaust door for selectively covering the exhaust opening;placing at least one heat exchanger within the duct between the air intake opening and the exhaust opening such that ambient air entering the air intake opening flows through the duct to contact the at least one heat exchanger and exits the duct through the exhaust opening, the at least one heat exchanger connected to cool the air in the combustion air intake line;connecting a controller to actuate the air intake door and the exhaust door to a fully open position and a fully closed position, as well as positions intermediate the fully closed position and the fully open position; andprogramming the controller to vary a degree that one or both of the air intake door and exhaust door is open to modulate a mass flow rate of ambient air contacting the at least one heat exchanger to vary heat transfer from the at least one heat exchanger to the ambient air in the duct to maintain a temperature of a fluid within the at least one heat exchanger within a preferred temperature range. 20. The method of claim 19, wherein programming the controller includes programming the controller to vary a degree that one or both of the intake door and exhaust door is open in order to modulate a mass flow rate of the ambient air in the duct across the at least one heat exchanger to maintain the temperature of the fluid within the at least one heat exchanger within the preferred temperature range, while minimizing an amount of excrescence drag from the open intake door and the open exhaust door on the outer surface of the fuselage.
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이 특허에 인용된 특허 (8)
Brutscher,Norbert; Haas,Joachim, Air conditioning system.
Ritter Bernhard (Pforzheim-Eutingen DEX) Burst Hermann (Rutesheim DEX) Schempp Ulrich (Tiefenbronn DEX), Cooling air flap and blower control for motor vehicles.
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