# US 11,027,720 B2 · Hybrid vehicle

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- Number: US 11,027,720 B2
- Document ID: US11027720B2
- Status: Granted
- Kind: B2
- Application number: 16/272,062
- Filed: 2019-02-11
- Published: 2019-08-15
- Granted: 2021-06-08
- Earliest claimed: 2018-02-13
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Taro Moteki; Kenji Itagaki; Koichi Kato
- Web page: https://patentgrep.com/patent/US11027720B2

## CPC

- B60K 6/445: Differential gearing distribution type
- B60W 20/19: for achieving enhanced acceleration
- B60W 10/06: including control of combustion engines
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 20/15: Control strategies specially adapted for achieving a particular effect
- B60W 50/082: {Selecting or switching between different modes of propelling}
- B60W 2510/0638: Engine speed
- B60W 2540/10: Accelerator pedal position
- B60W 2710/0666: Engine torque
- B60W 2710/083: Torque
- B60Y 2200/92: Hybrid vehicles
- Y02T 10/62: Hybrid vehicles
- Y02T 10/72: Electric energy management in electromobility
- 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
- B60Y: INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A hybrid vehicle includes an engine; a motor generator; and an electronic control unit to control the engine and the motor generator. Further, when an engine speed thereof is increased, the electronic control unit calculates an engine torque by adding an engine inertia torque to a request engine torque and cause the engine to output the calculated engine torque, and cause the motor generator to output a reaction torque in response to the request engine torque, and the electronic control unit performs control so that a torque assistance amount exerted by the motor generator is changeable while the engine speed is increased.

## Claims

### Claim 1

A hybrid vehicle comprising:
an engine;
a motor generator; and
an electronic control unit configure to control the engine and the motor generator,
wherein, when an engine speed thereof is increased, the electronic control unit calculates an engine torque by adding an engine inertia torque to a request engine torque and cause the engine to output the calculated engine torque, and cause the motor generator to output a reaction torque in response to the request engine torque, and the electronic control unit performs control so that a torque assistance amount exerted by the motor generator is changeable while the engine speed is increased, wherein the electronic control performs control so that the motor generator outputs a torque in a positive direction which is a same as that of a torque output from the engine in a period from when an engine speed increasing assistance starts to when the engine speed increasing assistance ends by the motor generator while the engine speed increases, and after the engine speed increasing assistance by the motor generator ends, the motor generator outputs a torque in a negative direction which is opposite to that of the torque output from the engine.

### Claim 2 (depends on 1)

The hybrid vehicle according to claim 1, further comprising: a traveling mode switching unit configured to switch between a first traveling mode and a second traveling mode, wherein in the first traveling mode, the motor generator performs an engine speed increasing assistance to a predetermined engine speed, and in the second traveling mode, the motor generator performs the engine speed increasing assistance to an engine speed which is less than the predetermined engine speed.

### Claim 3 (depends on 1)

The hybrid vehicle according to claim 1, wherein the engine is equipped with a supercharger.