Controlling apparatus and controlling method of hybrid vehicle

Patent metadata

Field	Value
Publication number	US-11052748-B2
Application number	US-201616094188-A
Country	US
Kind code	B2
Filing date	Sep 9, 2016
Priority date	Jul 22, 2016
Publication date	Jul 6, 2021
Grant date	Jul 6, 2021

Abstract

A controlling apparatus 1 according to an embodiment is a controlling apparatus of a hybrid vehicle 30 including a motor generator 3 that is mechanically connected to an internal combustion engine 2 and that can generate power in response to rotation of the internal combustion engine 2 and provide torque to the internal combustion engine 2 , the controlling apparatus 1 including a rotation information acquiring unit 11 that acquires rotation information of the motor generator 3 with a higher resolution than rotation information of the internal combustion engine 2 and an assist determining unit 12 that makes a determination regarding the start assist by the motor generator 3 based on the rotation information of the motor generator 3.

First claim

The invention claimed is:

1. A controlling apparatus of a hybrid vehicle comprising a motor generator that is mechanically connected to an internal combustion engine and that can generate power in response to rotation of the internal combustion engine and provide torque to the internal combustion engine, the controlling apparatus comprising:
a rotation information acquirer that acquires rotation information of the motor generator with a higher resolution than rotation information of the internal combustion engine; and
an assist determiner that makes a determination regarding start assist by the motor generator based on the rotation information of the motor generator, wherein
the assist determiner
judges whether the starting of the internal combustion engine is completed and whether the rotational speed of the motor generator is equal to or smaller than the assist permission rotational speed based on the rotation information of the motor generator, and
accepts the start assist when the starting of the internal combustion engine is completed, the rotational speed of the motor generator is equal to or smaller than the assist permission rotational speed, and the throttle opening corresponding to an accelerator operation of a driver is smaller than an assist permission lower limit,
wherein the controlling apparatus further comprises a torque controller that increases the torque provided to the internal combustion engine by the motor generator at a rate equal to or smaller than a prescribed time rate of change when the start assist is permitted.

2. The controlling apparatus according to claim 1 , wherein
the assist determiner
judges whether starting of the internal combustion engine is completed and whether a rotational speed of the motor generator is equal to or smaller than an assist permission rotational speed based on the rotation information of the motor generator and
permits the start assist when the starting of the internal combustion engine is completed and the rotational speed of the motor generator is equal to or smaller than the assist permission rotational speed.

3. The controlling apparatus according to claim 2 , wherein
the assist determiner permits the start assist when the throttle opening corresponding to the accelerator operation of the driver is equal to or greater than the assist permission lower limit.

4. The controlling apparatus according to claim 3 , wherein
the assist determiner cancels the permission of the start assist when the motor generator is in an abnormal state or when a brake control is performed.

5. The controlling apparatus according to claim 1 , wherein
the torque controller increases, in a stepwise manner, the torque provided to the internal combustion engine by the motor generator.

6. The controlling apparatus according to claim 1 , wherein
the torque controller changes an amount of increase in the torque based on the rotation information of the motor generator.

7. The controlling apparatus according to claim 1 , wherein
the motor generator causes the internal combustion engine to start to rotate when the hybrid vehicle departs.

8. The controlling apparatus according to claim 1 , wherein
the hybrid vehicle is a hybrid two-wheeled vehicle.

9. A controlling method of a hybrid vehicle comprising a motor generator that is mechanically connected to an internal combustion engine and that can generate power in response to rotation of the internal combustion engine and provide torque to the internal combustion engine, the controlling method comprising:
acquiring, by a rotation information acquirer of a controlling apparatus, rotation information of the motor generator with a higher resolution than rotation information of the internal combustion engine; and
making a determination, by an assist determiner of the controlling apparatus, regarding start assist by the motor generator based on the rotation information of the motor generator, wherein
the assist determiner
judges whether the starting of the internal combustion engine is completed and whether the rotational speed of the motor generator is equal to or smaller than the assist permission rotational speed based on the rotation information of the motor generator, and
accepts the start assist when the starting of the internal combustion engine is completed, the rotational speed of the motor generator is equal to or smaller than the assist permission rotational speed, and the throttle opening corresponding to an accelerator operation of a driver is smaller than an assist permission lower limit,
wherein the controlling apparatus further comprises a torque controller that increases the torque provided to the internal combustion engine by the motor generator at a rate equal to or smaller than a prescribed time rate of change when the start assist is permitted.

Assignees

• Shindengen Electric Mfg
• Honda Motor Co Ltd

Inventors

• Meguro Takayuki
• Kimura Mitsuhiro
• Takao ryuichi
• Shokaku Isao

Classifications

• B60W10/06

  including control of combustion engines · CPC title

• Y02T10/7072

  Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors · CPC title

• B60W2710/081

  Speed · CPC title

• B60W30/18027

  Drive off, accelerating from standstill · CPC title

• B60W2510/0638

  Engine speed · CPC title