CONTROL SYSTEM FOR VEHICLE

• US 20160152224A1
• Filed: 11/20/2015
• Published: 06/02/2016
• Est. Priority Date: 11/27/2014
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Tabata, Atsushi, Suzuki, Haruhisa, Okuda, Koichi, TATENO, Hiroyuki, Imamura, Tatsuya, FUJII, Kota
• Granted Patent: US 9,771,061 B2
• Time in Patent Office: Days
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/115 with planetary gears
• CPC Class Codes: B60W 20/10 Controlling the power contribution of each of the prime movers to meet required power demand
• CPC Class Codes: B60W 2510/108 pressure of control fluid
• CPC Class Codes: B60W 2710/0677 Engine power
• CPC Class Codes: B60W 2710/083 Torque
• CPC Class Codes: B60W 30/06 Automatic manoeuvring for parking
• CPC Class Codes: F02D 2250/26 by applying a torque limit
• CPC Class Codes: F02D 41/021 Introducing corrections for particular conditions exterior to the engine conjoint control of vehicle sub-units for propelling the vehicle B60W30/18
• CPC Class Codes: F02N 2200/106 Driver presence, e.g. detected by door lock, seat sensor or belt sensor
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/93 Conjoint control of different elements

Abstract

A control system is for a vehicle that includes an internal combustion engine. The control system includes an electronic control unit. The electronic control unit is configured to limit an output of the internal combustion engine when the electronic control unit determines that the vehicle runs in an unmanned state, such that the output of the internal combustion engine is lower the vehicle runs in the unmanned state than when the vehicle runs in a manned state.

Claims

1. A control system for a vehicle, the vehicle including an internal combustion engine, the control system comprising:

an electronic control unit configured to limit an output of the internal combustion engine when the electronic control unit determines that the vehicle runs in an unmanned state, such that the output of the internal combustion engine is lower the vehicle runs in the unmanned state than when the vehicle runs in a manned state.

2. The control system according to claim 1, wherein

when the electronic control unit determines that the vehicle runs in the unmanned state, the electronic control unit configured to limit the output of the internal combustion engine, by controlling an output-shaft rotation speed of the internal combustion engine or a load of the internal combustion engine to be lower when the vehicle runs in the unmanned state than when the vehicle runs in the manned state.

3. The control system according to claim 1, wherein

the vehicle includes an electric motor as a drive source, and

when the electronic control unit determines that the vehicle runs in the unmanned state, the electronic control unit is configured to limit the output of the internal combustion engine by limiting a driving force to a region in which the driving force is generated only by the electric motor.

4. The control system according to claim 1, wherein

the vehicle includes a transmission, and

when the electronic control unit determines that the vehicle runs in the unmanned state, the electronic control unit is configured to limit gear shifting of the transmission.

5. The control system according to claim 3, wherein the vehicle includes a transmission between the electric motor and an axle, and

when the electronic control unit determines that the vehicle runs in the unmanned state, the electronic control unit is configured to decrease a torque of the electric motor as a hydraulic oil pressure of the transmission is smaller.