# US 2015/0176537 A1 · Exhaust gas recovery apparatus of egr cooler for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0176537 A1 - Document ID: US20150176537A1 - Status: Published application - Kind: A1 - Application number: 14/478,464 - Filed: 2014-09-05 - Published: 2015-06-25 - Earliest claimed: 2013-12-24 - Assignees: Hyundai Motor Company - Applicants: Hyundai Motor Company - Inventors: Il JUNG - Web page: https://patentgrep.com/patent/US20150176537A1 ## CPC - F02M 26/08: for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor - F02D 41/0065: {Specific aspects of external EGR control (constructional details of EGR system F02M26/00)} - F02M 26/07: Mixed pressure loops, i.e. wherein recirculated exhaust gas is either taken out upstream of the turbine and reintroduced upstream of the compressor, or is taken out downstream of the turbine and reintroduced downstream of the compressor - F02M 26/43: in which exhaust from only one cylinder or only a group of cylinders is directed to the intake of the engine - F01N 13/08: Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)} - F02B 37/004: {with exhaust drives arranged in series} - F02B 37/013: with exhaust-driven pumps arranged in series - F02D 41/0007: {for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12)} - Y02T 10/40: Engine management systems - F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF - F02D: CONTROLLING COMBUSTION ENGINES (vehicle fittings, acting on a single sub-unit only, for automatically controlling vehicle speed B60K31/00; conjoint control of vehicle sub-units of different type or different function, road vehicle drive control systems for purposes other than the control of a single sub-unit B60W) - F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16) - 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 Disclosed is an exhaust gas recovery apparatus of an EGR cooler for a vehicle that circulates some of exhaust gases cooled by an EGR cooler to be discharged, not to an engine but to the outside in a low load operation condition or in a winter season condition, and thus maintaining a temperature of engine cooling water high. The apparatus may include a branch pipe for transferring exhaust gases discharged from the EGR cooler to a turbo charger, a flow rate control valve installed in the branch pipe for adjusting a flow rate of the exhaust gases, and a control unit for controlling an opening degree of the flow rate control valve. ## Claims ### Claim 1 An exhaust gas recovery apparatus of an exhaust gas recirculation (EGR) cooler for a vehicle, the apparatus comprising: a branch pipe for transferring exhaust gases discharged from the EGR cooler to a turbo charger; a flow rate control valve installed in the branch pipe, for adjusting a flow rate of the exhaust gases; and a control unit for controlling an opening degree of the flow rate control valve. ### Claim 2 (depends on 1) The apparatus of claim 1, further comprising: an EGR valve installed in an EGR exhaust gas pipe connected to the EGR cooler, for adjusting an amount of the exhaust gases circulated to the engine; a water temperature sensor for measuring a temperature of engine cooling water; a load detection sensor for measuring a load of the engine; and an atmosphere temperature sensor for measuring a temperature of the atmosphere, wherein the water temperature sensor, the load detection sensor, and the atmosphere temperature sensor provides the measured temperatures and load to the control unit. ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the branch pipe is branched from an EGR exhaust gas pipe and is connected to a front end or a rear end of the turbo charger. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein the control unit opens the flow rate control valve only if all of an opening degree of the EGR valve, the temperature of the engine cooling water, the temperature of the atmosphere, and the load of the engine satisfy predetermined conditions. ### Claim 5 (depends on 2) The apparatus of claim 2, wherein the control unit controls the opening degree of the flow rate control valve based on an opening degree of the EGR valve, the temperature of the engine cooling water, the temperature of the atmosphere, and/or the load of the engine ### Claim 6 An exhaust gas recovery apparatus of an EGR cooler for a vehicle, the apparatus comprising: a branch pipe for transferring exhaust gases discharged from the EGR cooler to a turbo charger; a direction control valve installed at a connection point of the branch pipe and an EGR exhaust gas pipe, for adjusting a flow direction of the exhaust gases; and a control unit for controlling an operation of the direction control valve. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the branch pipe is branched from the EGR exhaust pipe and is connected to a front end or a rear end of the turbo charger. ### Claim 8 (depends on 6) The apparatus of claim 6, wherein the control unit controls the operation of the direction control valve based on an EGR opening rate. ### Claim 9 (depends on 6) The apparatus of claim 6, wherein the direction control valve includes an electric three-way valve. ### Claim 10 An exhaust gas recovery apparatus of an EGR cooler for a vehicle, the apparatus comprising: a branch pipe for transferring exhaust gases discharged from the EGR cooler to a turbo charger; a direction control valve installed at a connection point of the branch pipe and an EGR exhaust gas pipe, for adjusting a flow direction of the exhaust gases; an opening/closing valve installed in the branch pipe, for controlling a flow of the exhaust gases; and a control unit for controlling an operation of the direction control valve and an operation of the opening/closing valve. ### Claim 11 (depends on 10) The apparatus of claim 10, wherein the branch pipe is branched from the EGR exhaust pipe and is connected to a front end or a rear end of the turbo charger. ### Claim 12 (depends on 10) The apparatus of claim 10, further comprising: a water temperature sensor for measuring a temperature of engine cooling water, wherein the water temperature sensor provides the measured temperature to the control unit. ### Claim 13 (depends on 10) The apparatus of claim 10, wherein the control unit opens the opening/closing valve and controls the operation of the direction control valve based on an EGR opening rate if a temperature of engine cooling water is equal to or less than a reference value. ### Claim 14 (depends on 10) The apparatus of claim 10, wherein the direction control valve includes an electric three-way valve. ### Claim 15 (depends on 4) The apparatus of claim 4, wherein the control unit controls the opening degree of the flow rate control valve based on the opening degree of the EGR valve, the temperature of the engine cooling water, the temperature of the atmosphere, and/or the load of the engine