# US 9,752,676 B2 · Hybrid vehicle

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- Number: US 9,752,676 B2
- Document ID: US9752676B2
- Status: Granted
- Kind: B2
- Application number: 15/363,090
- Filed: 2016-11-29
- Published: 2017-06-08
- Granted: 2017-09-05
- Earliest claimed: 2015-12-03
- Assignees: Toyota Jidosha Kabushiki Kaisha
- Applicants: Toyota Jidosha Kabushiki Kaisha
- Inventors: Nobuhide Nishigaki; Masaya Yamamoto
- Web page: https://patentgrep.com/patent/US9752676B2

## CPC

- F16H 61/0202: {the signals being electric}
- B60K 6/365: with the gears having orbital motion
- B60K 6/445: Differential gearing distribution type
- B60W 10/02: including control of driveline clutches
- B60W 10/08: including control of electric propulsion units, e.g. motors or generators
- B60W 20/00: Control systems specially adapted for hybrid vehicles {(hybrid vehicle design, B60K6/00; electric vehicles B60L)}
- 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)}
- B60W 30/184: Preventing damage resulting from overload or excessive wear of the driveline
- F16H 3/724: {using externally powered electric machines}
- B60W 2510/0638: Engine speed
- B60W 2510/081: Speed
- B60W 2520/10: Longitudinal speed
- B60Y 2200/92: Hybrid vehicles
- B60Y 2300/70: Control of gearings
- B60Y 2400/73: Planetary gearings
- Y02T 10/62: Hybrid vehicles
- Y10S 903/911: with two or more gear sets
- Y10S 903/947: Characterized by control of braking, e.g. blending of regeneration, friction braking
- F16H: GEARING
- 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
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

A hybrid vehicle includes an internal combustion engine, a first motor, a second motor, a first planetary gear mechanism, a second planetary gear mechanism, a battery, and an electronic control unit. The first planetary gear mechanism includes a first rotating element, a second rotating element, and a third rotating element. The internal combustion engine is coupled to the second rotating element. The second planetary gear mechanism includes a fourth rotating element, a fifth rotating element, and a sixth rotating element. A brake is connected to the fifth rotating element. The electronic control unit is configured to turn on the brake at a time of high-vehicle-speed ignition-off of the hybrid vehicle such that the fifth rotating element is in a rotation stop state. The high-vehicle-speed ignition-off is that an ignition is off while the hybrid vehicle is traveling at a predetermined vehicle speed or higher while operating the internal combustion engine.

## Claims

### Claim 1

A hybrid vehicle comprising:
an internal combustion engine;
a first motor;
a second motor;
a first planetary gear mechanism including a first rotating element, a second rotating element, and a third rotating element, the first motor being coupled to the first rotating element, the internal combustion engine being coupled to the second rotating element, a drive shaft coupled to drive wheels of the hybrid vehicle and the second motor being coupled to the third rotating element, and the first planetary gear mechanism being configured such that the first rotating element, the second rotating element, and the third rotating element are arranged in order on an alignment chart;
a second planetary gear mechanism including a fourth rotating element, a fifth rotating element, and a sixth rotating element, the first rotating element coupled to the fourth rotating element, a brake connected to the fifth rotating element, the second rotating element coupled to the sixth rotating element, and the second planetary gear mechanism configured such that the fourth rotating element, the fifth rotating element, and the sixth rotating element are arranged in order on an alignment chart;
a battery configured to transmit and receive electric power to and from the first motor and the second motor; and
an electronic control unit configured to turn on the brake at a time of an ignition-off at a high vehicle speed of the hybrid vehicle such that the fifth rotating element is brought into a rotation stop state, the ignition-off at the high vehicle speed being when the ignition is off while the hybrid vehicle is traveling at a predetermined vehicle speed or higher while operating the internal combustion engine.

### Claim 2 (depends on 1)

The hybrid vehicle according to claim 1,
wherein the electronic control unit is configured to turn on the brake after an absolute value of a rotation speed of the fifth rotating element becomes equal to or less than a threshold at the time of the ignition-off at the high vehicle speed.