CONTROL DEVICE FOR HYBRID VEHICLE

• US 20130218392A1
• Filed: 10/11/2011
• Published: 08/22/2013
• Est. Priority Date: 10/27/2010
• Status: Active Grant

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Aizawa, Takeo, Kaneko, Kakuzou, Koyama, Hirotaka
• Granted Patent: US 8,880,263 B2
• Time in Patent Office: Days
• US Class Current: 701/22
• CPC Class Codes: B60K 2006/4825 Electric machine connected or connectable to gearbox input shaft
• CPC Class Codes: B60K 6/48 Parallel type
• CPC Class Codes: B60L 3/0023 Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
• CPC Class Codes: B60L 50/15 with additional electric power supply with capacitors charged by engine-driven generators B60L50/40; with batteries charged by engine-driven generators B60L50/61
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• 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 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/50 Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
• CPC Class Codes: B60W 2050/0295 Inhibiting action of specific actuators or systems
• CPC Class Codes: B60W 2556/00 Input parameters relating to data
• CPC Class Codes: B60W 2710/086 Power
• CPC Class Codes: B60W 2710/248 Current for loading or unloading
• CPC Class Codes: B60W 50/029 Adapting to failures or work around with other constraints, e.g. circumvention by avoiding use of failed parts
• CPC Class Codes: B60W 50/038 Limiting the input power, torque or speed
• CPC Class Codes: F02D 29/02 peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
• CPC Class Codes: F02D 41/22 Safety or indicating devices for abnormal conditions in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809
• CPC Class Codes: F02N 11/04 the motors being associated with current generators
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 : Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y10S 903/903 : having energy storing means, e.g. battery, capacitor

Abstract

A control device 60 for controlling a hybrid vehicle 1 including an engine 10, a motor generator 20, and a battery 30 arranged to be charged by and discharge to the motor generator 20, the control device 60 includes an abnormality judging section 410 configured to judge whether or not an abnormality is generated in the engine 10, and an assist prohibition section 420 configured to prohibit the motor generator 20 from being used as a power source when the abnormality is generated in the engine 10.

Claims

1-3. -3. (canceled)

4. A control device for a hybrid vehicle including an internal combustion engine, a motor generator, and a battery arranged to be charged by and discharge to the motor generator, the control device comprising:

an abnormality judging section configured to judge whether or not an abnormality that an output torque of the internal combustion engine is outputted as a value smaller than a target torque is generated in the internal combustion engine; and

an assist prohibition section configured to prohibit the motor generator from being used as a power source when the abnormality is generated in the internal combustion engine.

5. The control device for the hybrid vehicle as claimed in claim 4, wherein the control device comprises an electric power generation restricting section configured to restrict an electric power of an electric power generation of the motor generator, to a value equal to or smaller than a predetermined value when the abnormality is generated in the internal combustion engine.

6. The control device for the hybrid vehicle as claimed in claim 5, wherein the predetermined value is an electric power necessary for driving auxiliary equipment.