# US 12,600,344 B2 · Carbon dioxide recovery system

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- Number: US 12,600,344 B2
- Document ID: US12600344B2
- Status: Granted
- Kind: B2
- Application number: 17/663,902
- Filed: 2022-05-18
- Published: 2023-01-26
- Granted: 2026-04-14
- Earliest claimed: 2021-07-21
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Koseki Sugiyama; Daiki Yokoyama
- Web page: https://patentgrep.com/patent/US12600344B2

## CPC

- B60W 20/16: for reducing engine exhaust emissions
- B01D 53/04: with stationary adsorbents {(B01D53/025 takes precedence)}
- B01D 53/1475: {Removing carbon dioxide}
- B01D 53/62: Carbon oxides
- B60K 6/48: Parallel type
- B60K 35/28: characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
- B60W 10/06: including control of combustion engines
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 20/12: using control strategies taking into account route information {(estimation or calculation of non-directly measurable driving parameters B60W40/00)}
- B60W 50/14: Means for informing the driver, warning the driver or prompting a driver intervention
- B60W 60/001: {Planning or execution of driving tasks}
- B01D 2257/504: Carbon dioxide
- B01D 2258/05: Biogas
- B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft}
- B60K 2360/166: Navigation
- B60W 2050/146: {Display means}
- B60W 2510/244: Charge state
- B60W 2556/50: of positioning data, e.g. GPS [Global Positioning System] data
- B60W: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28)
- 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

## Abstract

A carbon dioxide recovery system that recovers carbon dioxide from a hybrid vehicle traveling in a CO2 recovery area including a CO2 recovery road in which a stationary CO2 recovery device collecting and recovering carbon dioxide from the atmosphere is provided acquires a residual charging capacity of the battery and position information of the hybrid vehicle and guides the hybrid vehicle such that the hybrid vehicle travels on the CO2 recovery road using a notification device when the residual charging capacity is equal to or less than a predetermined SOC threshold value while the hybrid vehicle is traveling in the CO2 recovery area.

## Claims

### Claim 1

A carbon dioxide recovery system that recovers carbon dioxide discharged from an engine of a hybrid vehicle, which includes a plurality of power sources including the engine and a motor and a battery transmitting and receiving electric power to and from the motor, the carbon dioxide recovery system recovering carbon dioxide from the hybrid vehicle traveling in a CO2 recovery area including a CO2 recovery road in which a stationary CO2 recovery device including hardware that is configured to collect and recover carbon dioxide from the atmosphere is provided,
wherein the CO2 recovery area includes the CO2 recovery road, in which the stationary CO2 recovery device is installed, and a first road, in which the stationary CO2 recovery device is not installed, and the CO2 recovery area is defined as a region within a predetermined distance from a location where the CO2 recovery road is constructed;
wherein the CO2 recovery road is provided in a tunnel or forms an underpass in which the stationary CO2 recovery device is installed,
wherein the hybrid vehicle includes processing circuitry configured to:
acquire at least a residual charging capacity of the battery and position information of the hybrid vehicle, and control an operation of the engine;
notify a driver of the hybrid vehicle of information about the hybrid vehicle;
guide the hybrid vehicle such that the hybrid vehicle travels on the CO2 recovery road using the notification device when the residual charging capacity is equal to or less than a predetermined state of charge (SOC) threshold value or when the residual charging capacity is predicted to be equal to or less than the SOC threshold value while the hybrid vehicle is traveling in the CO2 recovery area, wherein the SOC threshold value is set in advance based on characteristics of a travel route of the hybrid vehicle; and
operate the engine when the residual charging capacity is equal to or less than an engine-start threshold value,
wherein the SOC threshold value is set so that, when the hybrid vehicle travels a first distance on the power of the battery after the residual charging capacity becomes less than the SOC threshold value, the residual charging capacity becomes less than the engine-start threshold value, wherein the first distance is a fixed distance that is set in advance regardless of the travel route of the hybrid vehicle,
wherein the processing circuitry is further configured to:
charge the battery by causing the motor to generate electric power when the residual charging capacity is equal to or less than a first engine-start threshold value while the hybrid vehicle is traveling outside the CO2 recovery area;
set a threshold for operating the engine to a second engine-start threshold value, in a case where the hybrid vehicle is traveling on the first road in the CO2 recovery area and the residual charging capacity has become equal to or less than the SOC threshold value or is predicted to become equal to or less than the SOC threshold value; and
operate the engine when the residual charging capacity is equal to or less than the second engine-start threshold value and the hybrid vehicle travels to the CO2 recovery road, wherein the second engine-start threshold value is less than the first engine-start threshold value.

### Claim 2 (depends on 1)

The carbon dioxide recovery system according to claim 1, wherein the processing circuitry is further configured to operate the engine and charge the battery by causing the motor to generate electric power while the hybrid vehicle is traveling on the CO2 recovery road.

### Claim 3 (depends on 1)

The carbon dioxide recovery system according to claim 1, wherein the processing circuitry is further configured to:
determine whether the CO2 recovery road is within a predetermined range of a traveling point predicted after the hybrid vehicle has traveled the first distance while the hybrid vehicle is traveling outside the CO2 recovery area; and
when it is determined that the CO2 recovery road is within the predetermined range, control the hybrid vehicle to travel on the CO2 recovery road.

### Claim 4

A carbon dioxide recovery system that recovers carbon dioxide discharged from an engine of a hybrid vehicle, which includes a plurality of power sources including the engine and a motor and a battery transmitting and receiving electric power to and from the motor, the carbon dioxide recovery system recovering carbon dioxide from the hybrid vehicle traveling in a CO2 recovery area including a CO2 recovery road in which a stationary CO2 recovery device including hardware that is configured to collect and recover carbon dioxide from the atmosphere is provided,
wherein the CO2 recovery area includes the CO2 recovery road, in which the stationary CO2 recovery device is installed, and a first road, in which the stationary CO2 recovery device is not installed, and the CO2 recovery area is defined as a region within a predetermined distance from a location where the CO2 recovery road is constructed;
wherein the CO2 recovery road is provided in a tunnel or forms an underpass in which the stationary CO2 recovery device is installed,
wherein the hybrid vehicle is an automated driving vehicle that is able to travel by automated driving for enabling the hybrid vehicle to travel under automatic control of a driving operation,
wherein the hybrid vehicle includes processing circuitry configured to:
acquire at least a residual charging capacity of the battery and position information of the hybrid vehicle, and control the driving operation and an operation of the engine;
control the hybrid vehicle such that the hybrid vehicle travels on the CO2 recovery road when the residual charging capacity is equal to or less than a predetermined state of charge (SOC) threshold value or when the residual charging capacity is predicted to be equal to or less than the SOC threshold value while the hybrid vehicle is traveling in the CO2 recovery area by the automated driving, wherein the SOC threshold value is set in advance based on characteristics of a travel route of the hybrid vehicle; and
operate the engine when the residual charging capacity is equal to or less than an engine-start threshold value,
wherein the SOC threshold value is set so that, when the hybrid vehicle travels a first distance on the power of the battery after the residual charging capacity becomes less than the SOC threshold value, the residual charging capacity becomes less than the engine-start threshold value, wherein the first distance is a fixed distance that is set in advance regardless of the travel route of the hybrid vehicle,
wherein the processing circuitry is further configured to:
charge the battery by causing the motor to generate electric power when the residual charging capacity is equal to or less than a first engine-start threshold value while the hybrid vehicle is traveling outside the CO2 recovery area;
set a threshold for operating the engine to a second engine-start threshold value, in a case where the hybrid vehicle is traveling on the first road in the CO2 recovery area and the residual charging capacity has become equal to or less than the SOC threshold value or is predicted to become equal to or less than the SOC threshold value; and
operate the engine when the residual charging capacity is equal to or less than the second engine-start threshold value and the hybrid vehicle travels to the CO2 recovery road, wherein the second engine-start threshold value is less than the first engine-start threshold value.

### Claim 5

A carbon dioxide recovery system that recovers carbon dioxide discharged from an engine of a hybrid vehicle, which includes a plurality of power sources including the engine and a motor and a battery transmitting and receiving electric power to and from the motor, the carbon dioxide recovery system recovering carbon dioxide from the hybrid vehicle traveling in a CO2 recovery area including a CO2 recovery road in which a stationary CO2 recovery device including hardware that is configured to collect and recover carbon dioxide from the atmosphere is provided,
wherein the CO2 recovery area includes the CO2 recovery road, in which the stationary CO2 recovery device is installed, and a first road, in which the stationary CO2 recovery device is not installed, and the CO2 recovery area is defined as a region within a predetermined distance from a location where the CO2 recovery road is constructed;
wherein the CO2 recovery road is provided in a tunnel or forms an underpass in which the stationary CO2 recovery device is installed,
wherein the hybrid vehicle includes processing circuitry configured to:
enable the hybrid vehicle and a driver of the hybrid vehicle to transmit and receive information and signals, and notify the driver of predetermined information;
acquire at least a residual charging capacity of the battery and position information of the hybrid vehicle;
notify the driver of information for guiding the hybrid vehicle such that the hybrid vehicle travels on the CO2 recovery road when the residual charging capacity is equal to or less than a predetermined state of charge (SOC) threshold value or when the residual charging capacity is predicted to be equal to or less than the SOC threshold value while the hybrid vehicle is traveling in the CO2 recovery area, wherein the SOC threshold value is set in advance based on characteristics of a travel route of the hybrid vehicle; and
operate the engine when the residual charging capacity is equal to or less than an engine-start threshold value,
wherein the SOC threshold value is set so that, when the hybrid vehicle travels a first distance on the power of the battery after the residual charging capacity becomes less than the SOC threshold value, the residual charging capacity becomes less than the engine-start threshold value, wherein the first distance is a fixed distance that is set in advance regardless of the travel route of the hybrid vehicle,
wherein the processing circuitry is further configured to:
charge the battery by causing the motor to generate electric power when the residual charging capacity is equal to or less than a first engine-start threshold value while the hybrid vehicle is traveling outside the CO2 recovery area;
set a threshold for operating the engine to a second engine-start threshold value, in a case where the hybrid vehicle is traveling on the first road in the CO2 recovery area and the residual charging capacity has become equal to or less than the SOC threshold value or is predicted to become equal to or less than the SOC threshold value; and
operate the engine when the residual charging capacity is equal to or less than the second engine-start threshold value and the hybrid vehicle travels to the CO2 recovery road, wherein the second engine-start threshold value is less than the first engine-start threshold value.