# US 9,752,540 B2 · Integrated cooling system and control method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,540 B2 - Document ID: US9752540B2 - Status: Granted - Kind: B2 - Application number: 14/737,466 - Filed: 2015-06-11 - Published: 2016-05-19 - Granted: 2017-09-05 - Earliest claimed: 2014-11-13 - Assignees: Hyundai Motor Company - Applicants: Hyundai Motor Company - Inventors: Jong Won Lee - Web page: https://patentgrep.com/patent/US9752540B2 ## CPC - F02M 26/29: Constructional details of the coolers, e.g. pipes, plates, ribs, insulation or materials - F01P 3/20: Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence) - F02B 29/0443: {Layout of the coolant or refrigerant circuit} - F02M 26/28: with liquid-cooled heat exchangers - F02M 26/33: controlling the temperature of the recirculated gases - F01P 2060/02: Intercooler - Y02T 10/12: Improving ICE efficiencies - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - 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 integrated cooling system includes a temperature adjustment chamber including an intercooler configured to exchange heat between a coolant and compressed air supplied to an engine, an exhaust gas recirculation (EGR) cooler configured to exchange heat between the coolant and an exhaust gas recirculating to the engine, and an oil cooler configured to exchange heat between the coolant and an engine oil. A coolant line is configured to supply coolant to the temperature adjustment chamber and transmit the coolant discharged from the temperature adjustment chamber to the engine. ## Claims ### Claim 1 An integrated cooling system for a vehicle comprising: a temperature adjustment chamber including an intercooler configured to exchange heat between a coolant and compressed air supplied to an engine, an exhaust gas recirculation (EGR) cooler configured to exchange heat between the coolant and an exhaust gas recirculating to the engine, and an oil cooler configured to exchange heat between the coolant and an engine oil; and a coolant line configured to supply coolant to the temperature adjustment chamber and transmit the coolant discharged from the temperature adjustment chamber to the engine, wherein the intercooler, the EGR cooler, and the oil cooler are disposed in this order from above to below within the temperature adjustment chamber. ### Claim 2 (depends on 1) The integrated cooling system of claim 1, further comprising: a heater core configured to discharge a partial amount of heat from the coolant heated in the engine to a vehicle interior; and a radiator configured to cool a remaining portion of heat of the coolant heated in the engine through heat-exchange with ambient air. ### Claim 3 (depends on 2) The integrated cooling system of claim 2, further comprising: a first control valve configured to selectively supply coolant which has passed through the heater core or coolant which has passed through the radiator, to the temperature adjustment chamber; a second control valve configured to selectively supply the coolant, which has passed through the heater core, to the first control valve or to the engine; a thermostat configured to continuously supply coolant, which has passed through the engine, to the heater core and selectively supply or not supply the coolant to the radiator; and an EGR valve configured to adjust an amount of exhaust gas recirculating to the engine after passing through the EGR cooler. ### Claim 4 (depends on 3) The integrated cooling system of claim 3, further comprising a positive temperature coefficient (PTC) heater configured to selectively heat coolant within the temperature adjustment chamber. ### Claim 5 (depends on 4) The integrated cooling system of claim 4, further comprising a controller configured to control the thermostat, the first control valve, the second control valve, the PTC heater, and the EGR valve according to temperatures of the coolant passing through the coolant line. ### Claim 6 (depends on 3) The integrated cooling system of claim 3, further comprising a back flow preventing valve installed in the coolant line between the engine and the thermostat. ### Claim 7 (depends on 5) The integrated cooling system of claim 5, wherein, when a temperature of the coolant is lower than a reference temperature, the controller controls the thermostat to supply the coolant introduced from the engine to the heater core and not to the radiator, controls the second control valve to allow the coolant, which has passed through the heater core, to be introduced to the first control valve, controls the first control valve to supply a coolant introduced from the second control valve to the temperature adjustment chamber, operates the PTC heater, and controls the EGR valve to increase the temperature of the coolant. ### Claim 8 (depends on 5) The integrated cooling system of claim 5, wherein, when a temperature of the coolant is higher than a reference temperature, the controller controls the thermostat to supply the coolant introduced from the engine to the radiator and to the heater core, controls the second control valve to supply the coolant which has passed through the heater core, back to the engine, controls the first control valve to supply the coolant, which has passed through the radiator, to the temperature adjustment chamber, controls the PTC heater to not operate, and controls the EGR valve to lower the temperature of the coolant. ### Claim 9 (depends on 3) The integrated cooling system of claim 3, further comprising additional EGR valves. ### Claim 10 (depends on 5) The integrated cooling system of claim 5, further comprising a coolant temperature sensor configured to measure a temperature of the coolant and transmit corresponding information to the controller. ### Claim 11 (depends on 10) The integrated cooling system of claim 10, wherein the coolant temperature sensor may be positioned to measure the temperature of the coolant between the engine and a turbocharger.