Vehicle control device

Patent metadata

Field	Value
Publication number	US-9020712-B2
Application number	US-201414278551-A
Country	US
Kind code	B2
Filing date	May 15, 2014
Priority date	May 23, 2013
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

In order to enable a transmission to reliably perform a switching to a parking range thereof, a vehicle control device includes a shift-by-wire device which switches a shift range of a transmission mounted on a vehicle in accordance with a request by an electric signal, an acceptance unit which accepts a request for switching to a parking range of the transmission, a detection unit which detects that switching to the parking range of the transmission has been settled, and a braking device which generates a braking force when the acceptance unit accepts a request for switching to the parking range of the transmission, from the time of acceptance of the request for switching until the detection unit detects settlement of the switching to the parking range.

First claim

What is claimed is:

1. A vehicle control device comprising:
a shift-by-wire device which switches a shift range of a transmission mounted on a vehicle in accordance with a request by an electric signal;
an acceptance unit which accepts a request for switching to a parking range of the transmission;
a detection unit which detects that switching to the parking range of the transmission has been settled; and
a braking device which generates a braking force when the acceptance unit accepts a request for switching to the parking range of the transmission, from the time of acceptance of the request for switching until the detection unit detects settlement of the switching to the parking range.

2. The vehicle control device according to claim 1 , wherein the braking device generates the braking force for a predetermined time, and decreases the braking force when the predetermined time elapses even if the detection unit does not detect the settlement of the switching to the parking range.

3. The vehicle control device according to claim 1 , wherein in operation of a hill start assist control that generates a braking force for a predetermined time while the vehicle is stopping on a hill, the braking device continues generation of the braking force after elapse of the predetermined time when the request for switching to the parking range is done based on the request.

4. The vehicle control device according to claim 1 , wherein in operation of an automatic brake hold control that generates a braking force while the vehicle is stopping, the braking device generates a braking force based on the automatic brake hold control when the request for switching is done.

5. The vehicle control device according to claim 1 , wherein in operation of a low speed following control, even when the acceptance unit accepts a request for switching to the parking range of the transmission, the braking device does not generate a braking force based on the request for switching.

6. The vehicle control device according to claim 1 , wherein the braking device holds the braking force at a first predetermined pressure and then holds the braking force at a second predetermined pressure lower than the first predetermined pressure.

Assignees

• Honda Motor Co Ltd

Inventors

• Koike Masaki
• Akamine Kohei
• Ishikawa Hisashi
• Watanabe Shinichiro

Classifications

• B60W10/182

  including control of parking brakes · CPC title

• B60W10/11 Primary

  Stepped gearings · CPC title

• B60W10/184

  with wheel brakes · CPC title

• F16H63/486

  Common control of parking locks or brakes in the transmission and other parking brakes, e.g. wheel brakes · CPC title

• B60W2520/10

  Longitudinal speed · CPC title