Control device for power transmission mechanism

Patent metadata

Field	Value
Publication number	US-10436262-B2
Application number	US-201715472284-A
Country	US
Kind code	B2
Filing date	Mar 29, 2017
Priority date	Mar 30, 2016
Publication date	Oct 8, 2019
Grant date	Oct 8, 2019

Abstract

A control device for a power transmission mechanism is provided, performing control so that a driving wheel reliably obtains torque when a vehicle is started. In a vehicle having a power transmission mechanism that includes a power transmission path transmitting power from a power source to a first driving wheel and a second driving wheel, and a power transmission element arranged in the power transmission path between the power source and the second driving wheel, a control device for a power transmission mechanism includes a control section controlling a fastening force of the power transmission element so as to control power transmission capacity of the power transmission mechanism from the power source to the second driving wheel, wherein when the control section acquires that the vehicle transitions from a traveling state to a stop state, the acquisition triggers the control section to increase the power transmission capacity.

First claim

What is claimed is:

1. A control device for a power transmission mechanism of a vehicle, the vehicle having a power transmission mechanism that comprises a power transmission path transmitting power from a power source to a first driving wheel and a second driving wheel, and a power transmission element arranged in the power transmission path between the power source and the second driving wheel, the control device comprising: a control section, controlling a fastening force of the power transmission element so as to control power transmission capacity of the power transmission mechanism from the power source to the second driving wheel, wherein
when the control section acquires that the vehicle transitions from a traveling state to a stop state, the acquisition triggers the control section to increase the power transmission capacity.

2. The control device for a power transmission mechanism according to claim 1 , comprising:
a velocity information acquisition section, acquiring velocity information of the vehicle, wherein
when the velocity information acquisition section acquires a velocity equal to or less than a first velocity when the vehicle decelerates, the control device fastens the power transmission element.

3. The control device for a power transmission mechanism according to claim 2 , comprising:
an acceleration information acquisition section, acquiring acceleration information of the vehicle, wherein
when the control section acquires that a value of the acceleration information acquisition section is equal to or less than a threshold acceleration after a predetermined time has passed since the velocity information acquisition section acquires a second velocity lower than the first velocity, the control section unfastens the power transmission element.

4. The control device for a power transmission mechanism according to claim 3 , wherein
the power transmission element is configured to be fastened or unfastened by oil pressure of operating oil supplied from a hydraulic circuit; and
the control section controls the oil pressure supplied from the hydraulic circuit to the power transmission element.

5. The control device for a power transmission mechanism according to claim 3 , wherein
when the control section acquires that an inclination of a road surface is equal to or greater than a predetermined value, the control section performs control to inhibit the unfastening of the power transmission mechanism.

6. The control device for a power transmission mechanism according to claim 5 , wherein
when the control section acquires that the road surface in front of the vehicle inclines so as to be higher by a predetermined value or more than the road surface behind the vehicle, the control section inhibits the unfastening of the power transmission mechanism.

7. The control device for a power transmission mechanism according to claim 2 , wherein
the power transmission element is configured to be fastened or unfastened by oil pressure of operating oil supplied from a hydraulic circuit; and
the control section controls the oil pressure supplied from the hydraulic circuit to the power transmission element.

8. The control device for a power transmission mechanism according to claim 1 , wherein
the power transmission element is configured to be fastened or unfastened by oil pressure of operating oil supplied from a hydraulic circuit; and
the control section controls the oil pressure supplied from the hydraulic circuit to the power transmission element.

Assignees

• Honda Motor Co Ltd

Inventors

• Hara Tetsuro

Classifications

• F16D25/0638

  with more than two discs, e.g. multiple lamellae · CPC title

• B60K2023/0858

  with electric means, e.g. electro-hydraulic means · CPC title

• B60K2023/0866

  with hydraulic means only · CPC title

• F16D48/066 Primary

  Control of fluid pressure, e.g. using an accumulator (F16D48/062, F16D48/068 take precedence) · CPC title

• F16D2500/1045

  Friction clutch · CPC title