# US 12,110,005 B2 · Control device for hybrid vehicle

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 12,110,005 B2
- Document ID: US12110005B2
- Status: Granted
- Kind: B2
- Application number: 17/985,883
- Filed: 2022-11-13
- Published: 2023-08-10
- Granted: 2024-10-08
- Earliest claimed: 2022-02-08
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Takehiro Komatsu; Masahiro Kachi
- Web page: https://patentgrep.com/patent/US12110005B2

## CPC

- B60K 6/48: Parallel type
- B60W 20/40: Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers {(power-up or power-down of the driveline B60W30/192)}
- B60K 6/26: characterised by the motors or the generators
- B60W 10/02: including control of driveline clutches
- B60W 10/06: including control of combustion engines
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 40/105: Speed
- B60K 2006/268: {Electric drive motor starts the engine, i.e. used as starter motor}
- B60K 2006/4825: {Electric machine connected or connectable to gearbox input shaft}
- B60W 2510/0638: Engine speed
- B60W 2520/10: Longitudinal speed
- Y02T 10/62: Hybrid vehicles
- 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
- 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
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A control device for a hybrid vehicle that includes an internal combustion engine, a motor, and a clutch provided between the internal combustion engine and the motor includes a first start control unit that starts the internal combustion engine by causing the motor to perform cranking, a second start control unit that starts the internal combustion engine without causing the motor to perform cranking, and a setting unit that sets a threshold for a rotational speed of the internal combustion engine according to a vehicle speed of the hybrid vehicle. When the rotational speed of the internal combustion engine is less than the threshold, the first start control unit starts the internal combustion engine. When the rotational speed of the internal combustion engine is equal to or higher than the threshold, the second start control unit starts the internal combustion engine.

## Claims

### Claim 1

A control device for a hybrid vehicle that includes an internal combustion engine, a motor, and a clutch provided between the internal combustion engine and the motor, the control device comprising:
a first start control unit configured to start the internal combustion engine by causing the motor to perform cranking;
a second start control unit configured to start the internal combustion engine without causing the motor to perform cranking; and
a setting unit configured to set a threshold for a rotational speed of the internal combustion engine according to a vehicle speed of the hybrid vehicle, wherein:
the first start control unit is configured to start the internal combustion engine when the rotational speed of the internal combustion engine is less than the threshold; and
the second start control unit is configured to start the internal combustion engine when the rotational speed of the internal combustion engine is equal to or higher than the threshold.

### Claim 2 (depends on 1)

The control device according to claim 1, further comprising a throttle control unit configured to control a throttle valve of the internal combustion engine, wherein:
the throttle control unit is configured to open the throttle valve when the vehicle speed of the hybrid vehicle is equal to or higher than a predetermined speed;
the setting unit is configured to set the threshold to a first value when the vehicle speed of the hybrid vehicle is equal to or higher than the predetermined speed; and
the setting unit is configured to set the threshold to a second value larger than the first value when the vehicle speed of the hybrid vehicle is less than the predetermined speed.