METHOD TO SIGNAL THAT THE PARKING BRAKE OF AN AUTOMATIC OR AUTOMATED TRANSMISSION OF A VEHICLE IS NOT ENGAGED BEFORE THE DRIVER LEAVES THE VEHICLE

• US 20150336555A1
• Filed: 10/15/2013
• Published: 11/26/2015
• Est. Priority Date: 12/18/2012
• Status: Active Grant

• Current Assignee: Renault Sas (Renault)
• Original Assignee: Renault Sas (Renault)
• Inventors: DELANNOYE, Olivier
• Granted Patent: US 10,300,892 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60T 1/005 by locking of wheel or transmission rotation
• CPC Class Codes: B60T 17/22 Devices for monitoring or checking brake systems; Signal devices
• CPC Class Codes: G08B 21/24 Reminder alarms, e.g. anti-loss alarms

Abstract

A method to signal that a parking brake of an automatic or automated transmission of a motor vehicle is not engaged, during the detection that the driver or passenger door has been opened after the engine has been turned off, characterised in that a vehicle computing unit other than the transmission computer records the last signal related to the engaged state of the parking brake and triggers an alert signal conveyed to the passengers of the vehicle if the driver or passenger door is open and the parking device of the transmission is not engaged.

Claims

1. A method for signaling that a parking brake associated with an automatic or automated motor vehicle transmission is not engaged, upon detecting the opening of the door of the driver after the engine has been switched off, characterized in that a vehicle computation unit other than the transmission computer records the last signal relating to the state of engagement of the parking brake and triggers an alert signal for the attention of the passengers of the vehicle if the door of the driver or of the passenger is open, and the parking device of the automatic or automated transmission is not engaged.

2. The alert method as claimed in claim 1, characterized in that the storage of the last engagement state signal is handled by a computer of the vehicle that remains active after the transmission computer has been switched off.

3. The alert method as claimed in claim 1, characterized in that the alert message is sent by a computer associated with the onboard controls of the vehicle.

4. The alert method as claimed in claim 1, characterized in that, if the CAN message disappears, the computer of the dashboard stores the last value of the message corresponding to the park/non-park state of the transmission.

5. The alert method as claimed in claim 1, characterized in that the position stored by the dashboard is the position of an electrical parking finger, when its electrical power supply is switched off.