# US 2014/0360445 A1 · Engine Cooling System > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0360445 A1 - Document ID: US20140360445A1 - Status: Published application - Kind: A1 - Application number: 13/911,485 - Filed: 2013-06-06 - Published: 2014-12-11 - Earliest claimed: 2013-06-06 - Assignees: The Boeing Company - Applicants: The Boeing Company - Inventors: Travis Allen Reynolds; David S. Krug; Michelle Louise Courtney - Web page: https://patentgrep.com/patent/US20140360445A1 ## CPC - F01P 7/10: by throttling amount of air flowing through liquid-to-air heat exchangers - F01P 3/00: Liquid cooling - F01P 11/10: Guiding or ducting cooling-air, to, or from, liquid-to-air heat exchangers - F02B 29/0412: {Multiple heat exchangers arranged in parallel or in series} - F02B 29/0418: {the intake air cooler having a bypass or multiple flow paths within the heat exchanger to vary the effective heat transfer surface} - F02B 29/0443: {Layout of the coolant or refrigerant circuit} - F01P 2060/16: Outlet manifold - Y02T 10/12: Improving ICE efficiencies - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract An engine cooling system may include a housing forming an enclosed duct having an air intake opening, at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening contacts the at least one heat exchanger, at least one radiator circulating coolant for the engine, at least one radiator positioned in the duct such that ambient air entering the air intake opening contacts at least one radiator, and the duct configured to include an exhaust opening positioned downstream of the at least one heat exchanger and the at least one radiator, such that ambient air flows in the air intake opening, through the duct to contact the heat exchanger and the radiator, and exits the duct through the exhaust opening. ## Claims ### Claim 1 An engine cooling system comprising: a housing forming an enclosed duct having an air intake opening; at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening contacts the at least one heat exchanger; 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 the duct configured to include an exhaust opening positioned downstream of the at least one heat exchanger and the at least one radiator, such that ambient air flows in the air intake opening, through the duct to contact the at least one heat exchanger and the at least one radiator, and exits the duct through the exhaust opening. ### Claim 2 (depends on 1) The engine cooling system of claim 1, wherein the exhaust opening includes a passive flow exhaust opening having a positionable passive flow exhaust door configured to modulate air flow through the duct. ### Claim 3 (depends on 2) The engine cooling system of claim 2, wherein the exhaust opening includes a motive flow exhaust opening having a positionable motive flow exhaust door configured to modulate air flow through the duct. ### Claim 4 (depends on 3) The engine cooling system of claim 3, wherein the motive flow exhaust opening includes a blower configured to move air through the duct to the exhaust opening. ### Claim 5 (depends on 4) The engine cooling system of claim 4, wherein the air intake opening includes a positionable intake door configured to modulate air flow through the duct. ### Claim 6 (depends on 5) The engine cooling system of claim 5, further comprising a control configured to modulate one or more of the passive flow exhaust door, the motive flow exhaust door, the blower, and the intake door. ### Claim 7 (depends on 6) The engine cooling system of claim 6, wherein the control is configured to modulate the passive flow exhaust door to an open configuration and modulate the motive flow exhaust door to a closed configuration when a vehicle associated with the engine is in motion; and to modulate the motive flow exhaust door to an open configuration and the passive flow exhaust door to a closed configuration when the vehicle associated with the engine is not in motion. ### Claim 8 (depends on 1) The engine cooling system of claim 1, wherein the exhaust opening includes a positionable exhaust door configurable to modulate air flow through the duct. ### Claim 9 (depends on 8) The engine cooling system of claim 8, further comprising a check valve in the duct downstream of the at least one heat exchanger and at least one radiator. ### Claim 10 (depends on 9) The engine cooling system of claim 9, 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 and at least one radiator. ### Claim 11 (depends on 1) The engine cooling system of claim 1, wherein the air intake opening includes a positionable intake door, the exhaust opening includes an exhaust door, and the cooling system further comprises a blower positioned in the duct, all configured to modulate air flow through the duct. ### Claim 12 (depends on 11) The engine cooling system of claim 11, further comprising a controller configured to actuate one or more of the blower, the intake door and the exhaust door. ### Claim 13 (depends on 1) The engine cooling system of claim 1, further comprising a combustion air intake line connected to the engine; and wherein the at least one heat exchanger is at least one intercooler connected to condition combustion air in the combustion air intake line. ### Claim 14 (depends on 13) The engine cooling system of claim 13, wherein the combustion air intake line includes at least one bypass line connected to divert combustion air around the at least one intercooler, and at least one bypass valve connected to modulate an amount of combustion air diverted around the at least one intercooler, and an amount of combustion air flowing through the at least one intercooler. ### Claim 15 (depends on 14) The engine cooling system of claim 14, further comprising at least one sensor configured to determine a temperature of combustion air in the combustion air intake line; and a controller for receiving a temperature signal from the at least one sensor, and in response to the temperature signal, actuating the at least one bypass valve to modulate the amount of combustion air diverted around the at least one intercooler and the amount of combustion air flowing through the at least one intercooler to provide combustion air to the engine within a preferred temperature range. ### Claim 16 A vehicle comprising: an internal combustion engine; a compartment having an enclosed duct; the duct having an air intake opening to ambient air and an exhaust opening to ambient air aft of the air intake opening; at least one heat exchanger positioned within the duct such that ambient air entering the air intake opening contacts the at least one heat exchanger; at least one radiator positioned within the duct and configured to circulate coolant for the engine; wherein the exhaust opening positioned downstream of the at least one heat exchanger and the at least one radiator, such that ambient air flows in the air intake opening, through the duct to contact the at least one heat exchanger and the at least one radiator, and exits the duct through the exhaust opening; and wherein the vehicle is selected from an aircraft, a land vehicle, an amphibious vehicle a marine vehicle, and a submarine vehicle. ### Claim 17 (depends on 16) The vehicle of claim 16, wherein the intake opening includes a positionable intake door configured to modulate air flow through the duct, the exhaust opening includes a passive flow exhaust opening having a positionable passive exhaust door configured to modulate air flow through the duct, and a motive flow exhaust opening having a positionable motive flow exhaust door configured to modulate air flow through the duct. ### Claim 18 (depends on 17) The vehicle of claim 17, further comprising a combustion air intake line connected to the engine; and wherein the at least one heat exchanger includes at least one intercooler connected to condition combustion air in the combustion air intake line, the combustion air intake line includes at least one bypass line connected to divert combustion air around the at least one intercooler, and at least one bypass valve connected to modulate an amount of combustion air diverted around the at least one intercooler and an amount of combustion air flowing through the at least one intercooler. ### Claim 19 A method for cooling an engine having a housing forming an enclosed duct having an air intake opening and an exhaust opening, the method comprising: placing at least one heat exchanger within the duct; connecting the at least one heat exchanger to condition combustion air in a combustion air intake line to the engine; placing at least one radiator configured to circulate coolant for the engine within the duct; and modulating an amount of ambient air flowing through the duct to maintain temperatures of the combustion air and the coolant within preferred temperature ranges. ### Claim 20 (depends on 19) The method of claim 19, wherein modulating an amount of ambient air flowing through the duct includes one or more of activating a blower to move ambient air through the duct, positioning an air intake door at the air intake opening, positioning an exhaust door in the exhaust opening, positioning a passive flow exhaust door in a passive flow exhaust opening, and positioning a motive flow exhaust door in a motive flow exhaust opening.