Method of Inhibiting the Automatic Stop Control System of the Heat Engine of a Vehicle in the Absence of a Driver

• US 20070267238A1
• Filed: 08/10/2005
• Published: 11/22/2007
• Est. Priority Date: 08/27/2004
• Status: Active Grant

• Current Assignee: Peugeot Citroen Automobiles SA (Stellantis NV)
• Original Assignee: Peugeot Citroen Automobiles SA (Stellantis NV)
• Inventors: Levasseur, Guillaume, Celisse, Arnaud, Klein, Herve, Guy, Jean-Emmanuel
• Granted Patent: US 7,657,366 B2
• Time in Patent Office: Days
• US Class Current: 180/272
• CPC Class Codes: B60K 28/04 responsive to presence or absence of the driver, e.g. to weight or lack thereof
• CPC Class Codes: F02D 2041/228 Warning displays
• CPC Class Codes: F02D 41/042 for stopping the engine
• 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 11/0822 related to action of the driver
• CPC Class Codes: F02N 11/10 Safety devices F02N11/08 takes precedence
• CPC Class Codes: F02N 2200/0815 Vehicle door sensors
• CPC Class Codes: F02N 2200/102 Brake pedal position
• CPC Class Codes: F02N 2200/106 Driver presence, e.g. detected by door lock, seat sensor or belt sensor
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

The invention relates to a method of controlling the stopping and starting of a heat engine (2) of a vehicle. The invention is of the type in which (i) it is necessary for the vehicle to be in an engine stop request phase, and not in pre-defined operating conditions that oppose the stopping of the engine (2), in order for the engine (2) to be stopped or (ii) it is necessary for the vehicle to be in an engine start request phase, and not in pre-defined operating conditions that oppose the starting of the engine (2), in order for the engine to be started. The invention is characterised in that, for a given engine stop request phase, the engine (2) can only be stopped or started at most a pre-determined number of times.

Claims

1. Method of controlling the stopping and starting of a heat engine with which a vehicle is equipped, of the type according to which it is necessary that the vehicle be in the engine stop request phase and not in the predefined operating conditions opposed to a stopping of said engine for the stopping of the engine to be controlled, or it is necessary that the vehicle be in engine start request phase and not in the predefined operating conditions opposed to the starting of said engine for the starting of the engine to be controlled, wherein said operating conditions of the engine opposed to the stopping of the engine comprise the absence of the driver from the vehicle, and in that, among the engine operating conditions defining a start request phase is the detection of the absence of the driver from the vehicle.

2. Control method according to claim 1, wherein, as soon as the duration of the absence of the driver exceeds a first threshold value, the absence of the driver does not constitute any longer an operating condition opposed to the stopping of the engine and the stopping of the engine can be controlled.

3. Control method according to claim 1, wherein, as soon as the duration of the absence of the driver exceed a second threshold value, the absence of the driver constitutes an operating condition opposed to the starting of the engine and the starting of the engine can no longer be controlled.

4. Control method according to claim 1, wherein the absence of the driver is inferred from the position of the brake pedal.

5. Control method according to claim 1, wherein the absence of the driver is inferred from the detection of an opening of the driver'"'"'s door.

6. Control method according to claim 1, wherein the absence of the driver is inferred from the detection of the unfastening of the driver'"'"'s seat belt.

7. Control method according to claim 1, wherein the absence of the driver is inferred from the detection of a lightening detected by a sensor with which the driver'"'"'s seat is equipped.

8. Control method according to claim 1, wherein the absence of the driver is inferred from information supplied by a specific driver presence sensor with which the vehicle is equipped.

9. Control method according to claim 1, wherein the operation of the engine according to a start subsequent to the detection of the absence of the driver is performed during a predetermined time period, then the engine is stopped if, at the end of this time period, the driver is still detected to be absent.

10. Control method according to claim 9, wherein, once the engine has been stopped, it can no longer be re-started except if a predetermined code is entered.

11. Control method according to claim 1, wherein the re-starting subsequent to the detection of the absence of the driver is accompanied by the triggering of sound and/or light warning signals intended to alert the driver.