# US 2020/0400058 A1 · Co2 trapping device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0400058 A1 - Document ID: US20200400058A1 - Status: Published application - Kind: A1 - Application number: 16/885,281 - Filed: 2020-05-28 - Published: 2020-12-24 - Earliest claimed: 2019-06-21 - Assignees: Toyota Jidosha Kabushiki Kaisha - Applicants: Toyota Jidosha Kabushiki Kaisha - Inventors: Kiyoshi FUJIHARA; Kouseki SUGIYAMA; Hiroshi OHTSUKI; Daiki YOKOYAMA; Yushi SEKI - Web page: https://patentgrep.com/patent/US20200400058A1 ## CPC - F01N 3/021: by means of filters - F01N 9/002: {of filter regeneration} - B60K 6/24: characterised by the combustion engines - B60K 6/26: characterised by the motors or the generators - B60K 6/28: characterised by the electric energy storing means, e.g. batteries or capacitors - B60L 1/00: Supplying electric power to auxiliary equipment of vehicles (circuit arrangements for charging batteries H02J7/00) - B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors} - B60L 1/02: to electric heating circuits - B60L 50/15: with additional electric power supply (with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61) - B60L 58/12: responding to state of charge [SoC] - F01N 3/02: for cooling, or for removing solid constituents of, exhaust (by means of electric or electrostatic separators F01N3/01 {; mixing air with exhaust in tailpipes F01N13/082, F01N13/20}) - F01N 3/023: using means for regenerating the filters, e.g. by burning trapped particles - F01N 3/0857: {Carbon oxides} - F01N 3/10: by thermal or catalytic conversion of noxious components of exhaust - F01N 3/2006: {Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating (by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235)} - F01N 3/2892: {Exhaust flow directors or the like, e.g. upstream of catalytic device} - F01N 9/00: Electrical control of exhaust gas treating apparatus (monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00; conjoint electrical control of two or more combustion engine functions F02D43/00) - B60L 2270/12: of exhaust - B60Y 2200/92: Hybrid vehicles - F01N 2240/02: a heat exchanger - F01N 2240/36: an exhaust flap - F01N 2250/10: cooling and filtering - F01N 2410/12: in case of absorption, adsorption or desorption of exhaust gas constituents - F01N 2570/10: Carbon or carbon oxides - F01N 2590/11: for hybrid vehicles - F01N 2900/104: Battery status - F01N 2900/1602: Temperature of exhaust gas apparatus - Y02T 10/12: Improving ICE efficiencies - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - Y02T 10/7072: Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors - 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) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A CO2 trapping device mounted in a hybrid vehicle, provided with a branch passage branched from an exhaust passage, a CO2 trapping part provided at the branch passage and trapping CO2 in inflowing exhaust gas, a cooling part using electric power of the battery to cool the CO2 trapping part, a flow controlling part controlling an amount of flow of the exhaust gas flowing into the branch passage, and a CO2 trapping control part controlling the cooling part and the flow controlling part, the CO2 trapping control part controlling the flow controlling part so as to make the cooling part stop cooling and to shut off the flow of the exhaust gas to the CO2 trapping part when a charging rate of the battery becomes a predetermined SOC threshold value or less. ## Claims ### Claim 1 A CO2 trapping device mounted in a hybrid vehicle, the hybrid vehicle comprising: an internal combustion engine and electric motor as sources of power; and a battery supplying electric power to the electric motor and able to be charged by output of the internal combustion engine, wherein the CO2 trapping device comprises; a branch passage branched from an exhaust passage through which exhaust gas discharged from the internal combustion engine is made to flow; a CO2 trapping part provided at the branch passage and trapping CO2 in inflowing exhaust gas; a cooling part using electric power of the battery to cool the CO2 trapping part; a flow controlling part controlling an amount of flow of the exhaust gas flowing into the branch passage; and the CO2 trapping control part configured so as to control the cooling part and the flow controlling part, and the CO2 trapping control part is configured to control the flow controlling part so as to make the cooling part stop cooling and to shut off the flow of the exhaust gas to the CO2 trapping part when a charging rate of the battery becomes less than or equal to a predetermined SOC threshold value. ### Claim 2 (depends on 1) The CO2 trapping device according to claim 1, wherein the internal combustion engine comprises a particulate filter provided at an upstream side from the CO2 trapping device in a direction of flow of exhaust gas in the exhaust passage and trapping particulate matter in the exhaust gas, and the CO2 trapping control part is further configured to control the flow controlling part so as to make the cooling part stop cooling and to shut off the flow of the exhaust gas to the CO2 trapping part when filter regeneration processing is performed holding a temperature of the particulate filter at a filter regeneration temperature. ### Claim 3 (depends on 1) The CO2 trapping device according to claim 1, wherein the CO2 trapping control part is further configured to control the flow controlling part so as to make the cooling part stop cooling and to shut off the flow of the exhaust gas to the CO2 trapping part when a concentration of CO2 in the exhaust gas is less than or equal to a predetermined concentration threshold value. ### Claim 4 (depends on 1) The CO2 trapping device according to claim 1, wherein the branch passage is connected so as to merge with the exhaust passage at a downstream side from the CO2 trapping part in a direction of flow of exhaust gas, the CO2 trapping device further includes a shutoff valve provided in the branch passage between a merging position with the exhaust passage and the CO2 trapping part, and the CO2 trapping control part is further configured to control the shutoff valve so as to render the shutoff valve a closed state when the charging rate of the battery becomes less than or equal to a predetermined SOC threshold value. ### Claim 5 (depends on 1) The CO2 trapping device according to claim 1, wherein the CO2 trapping control part is further configured to control the flow controlling part so as to shut off the flow of the exhaust gas to the CO2 trapping part, and configured to then stop cooling by the cooling part. ### Claim 6 (depends on 1) The CO2 trapping device according to claim 1, wherein the CO2 trapping device comprises a suction part using electric power of the battery to suck in the exhaust gas from the exhaust passage and making the sucked in exhaust gas flow into the branch passage, and the CO2 trapping control part is further configured to make suction by the suction part stop when the charging rate of the battery becomes less than or equal to a predetermined SOC threshold value. ### Claim 7 (depends on 6) The CO2 trapping device according to claim 6, wherein the CO2 trapping control part is configured to control the flow controlling part so as to stop the suction part, then shut off the flow of the exhaust gas to the CO2 trapping part.