Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/08—Circuits or control means specially adapted for starting of engines
  • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
  • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
  • F02N11/0822—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to action of the driver
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
  • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
  • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N11/00—Starting of engines by means of electric motors
  • F02N11/08—Circuits or control means specially adapted for starting of engines
  • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
  • F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
  • F02N11/0833—Vehicle conditions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2540/00—Input parameters relating to occupants
  • B60W2540/12—Brake pedal position
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
  • B60W2540/00—Input parameters relating to occupants
  • B60W2540/16—Ratio selector position
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N2200/00—Parameters used for control of starting apparatus
  • F02N2200/08—Parameters used for control of starting apparatus said parameters being related to the vehicle or its components
  • F02N2200/0802—Transmission state, e.g. gear ratio or neutral state
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
  • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
  • F02N2200/00—Parameters used for control of starting apparatus
  • F02N2200/10—Parameters used for control of starting apparatus said parameters being related to driver demands or status
  • F02N2200/102—Brake pedal position
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/10—Internal combustion engine [ICE] based vehicles
  • Y02T10/40—Engine management systems

Definitions

• the invention relates to the field of internal combustion engines of motor vehicles and more particularly to the management of the stop and start of these engines including engines equipped with an automatic stop and restart system. , and an automatic or robotic gearbox.
• the stop and restart system can be disabled since the stops are frequent and of short duration.
• the automatic stop and restart system may allow and / or maintain the engine stop since the vehicle is immobilized.
• the stop and restart system may allow stopping, maintaining the stop and / or restart the engine.
• the document FR 2 995 835 discloses a stop and restart management method of a motor vehicle engine, this method comprising a main step of taking into account the activated or deactivated position of the parking brake and the the action of the driver on the brake pedal.
• the position of the gearbox and the state of depression of the clutch pedal, if any may be taken into account to stop or restart the engine.
• this method stops and restart the engine, it has some disadvantages.
• this method is based on a series of steps taken into account of certain parameters which involves a computer having a large processing capacity.
• this method is long to implement and does not allow a fast response time. Thus, the driver can not enjoy optimal torque as soon as he wants to move the vehicle.
• the state of the parking brake is an obstacle to the implementation of the method.
• a manual parking brake it is common that the action of the driver is not complete, for example by inattention or manipulation too fast handle, and the parking brake is not fully loosened. This incomplete action does not prevent the movement of the vehicle but generates a signal indicating to the driver that the parking brake is not completely loosened and prematurely wears the parking brake.
• the motor can not be restarted and thus generate the torque necessary to deactivate the parking brake, deactivation of the parking brake automatic operation is necessary for restarting the engine.
• a first objective is to provide a method of managing the shutdown and restart of a motor vehicle internal combustion engine, which is fast and does not require large resources for its implementation.
• a second objective is to provide a method for managing the shutdown and restart of an internal combustion engine of a motor vehicle, simple design and adaptation for different engines.
• a third objective is to provide a method for managing the stopping and restarting of an internal combustion engine of a motor vehicle, which anticipates the will of the driver to restart to ensure optimal torque as soon as the user wishes move the vehicle.
• a fourth objective is to provide a motor vehicle comprising an internal combustion engine and a computer for implementing a method for managing the stopping and restarting of an internal combustion engine meeting the above objectives.
• a management method of an internal combustion engine of a motor vehicle comprising:
• a brake pedal which can adopt a depressed position to brake the vehicle and a relaxed position having no influence on the vehicle
• an automatic gearbox capable of adopting a driving position to allow the vehicle to move forward, a recoil position to allow the vehicle to retreat, a neutral position to separate the engine from a driving circuit of the vehicle, and a parking position for locking the drive wheels of the vehicle during a parking, this method comprising a step of analyzing the state of the engine, the brake pedal and the gearbox so that if the engine is switched off, when a driver of the vehicle places the transmission in parking position and depresses the brake pedal, then the engine is restarted.
• the driver positions the gearbox in parking position from the driving position, the recoil position or the neutral position and that the driver release the brake pedal, then the engine is stopped.
• a computer for the implementation of the method as described above, the computer being coupled to the bodies of a motor vehicle.
• the computer comprises four inputs and two outputs.
• a motor vehicle comprising an internal combustion engine, a battery, a brake pedal, an automatic gearbox and a computer capable of implementing the previously described method.
• Figure 1 is a schematic view showing the connections between a computer and different bodies of a motor vehicle
• Figure 2 is a timing chart showing the state of different members of Figure 1 according to a first use configuration
• Figure 3 is a timing chart showing the state of different members of Figure 1 according to a second use configuration.
• FIG. 1 is shown, schematically, a vehicle 1 automobile comprising an internal combustion engine 2, a computer 3, a battery 4, a brake pedal 5, a gearbox 6 and a tachometer 7.
• the gearbox 6 is a 6 automatic gearbox whose different positions will be described below.
• the vehicle 1 is equipped with an automatic stop and restart system that stops the engine 2 when the vehicle 1 is stopped, in order to reduce fuel consumption and limit the discharge of polluting particles into the atmosphere.
• the stop and restart system is controlled by the computer 3 and is activated or deactivated according to a threshold speed of the vehicle 1. For example, when the instantaneous speed of the vehicle 1 is greater than the threshold speed, the stopping and restarting system is deactivated, whereas when the instantaneous speed of the vehicle 1 is below the threshold value, the stopping and restarting system is activated.
• the instantaneous speed of the vehicle 1 is supplied to the computer 3 by the tachometer 7.
• the computer 3 comprises four inputs and two outputs, the four inputs being connected to the tachometer 7, the brake pedal 5, the engine 2 and the gearbox 6, the two outputs being connected to the battery 4 and the engine 2.
• connection between the computer 3 and the brake pedal 5 is via a brake sensor F to provide a binary signal on the depression state of the brake pedal 5, namely a signal 0 if the brake pedal 5 is not depressed, and a signal 1 if the brake pedal 5 is depressed.
• connection between the gearbox 6 and the computer 3 is via a box P sensor for providing a binary signal on the state of a position of the gearbox 6, namely a signal 0 if the gearbox 6 is in a neutral position N to dissociate the motor 2 of a drive circuit (not shown) of the vehicle 1, in a recoil position R allowing the recoil of the vehicle 1 or a position D driving allowing the vehicle 1 to move forward, and a signal 1 if the gearbox 6 is in a parking position P to block the drive wheels of the vehicle 1 during parking.
• a box P sensor for providing a binary signal on the state of a position of the gearbox 6, namely a signal 0 if the gearbox 6 is in a neutral position N to dissociate the motor 2 of a drive circuit (not shown) of the vehicle 1, in a recoil position R allowing the recoil of the vehicle 1 or a position D driving allowing the vehicle 1 to move forward, and a signal 1 if the gearbox 6 is in a parking position P
• the word parking is a word of English origin which means that the vehicle 1 is in a condition in which the vehicle 1 does not move.
• the link between the computer 3 and the battery 4 is a schematic modeling of a starting circuit of the engine 2.
• the computer 3 sends a start command to a starter (not shown for simplification purposes) 4.
• the starter draws in the battery 4 the energy necessary to provide a starting torque to the engine 2.
• the computer 3 can execute a step of a management method of stopping and restarting the engine 2, so as to realize a stop A of the engine 2 or a restart RD of the engine 2 from the analysis of the state of the brake sensor F, the P-box sensor and the state of the engine 2.
• the timing diagrams of Figures 2 and 3 show the stop A and restart RD of the engine 2 generated by the computer 3 from the information of the brake sensor F and the P-box sensor.
• the RD restart of the engine 2 is automatically activated if the driver presses on the brake pedal 5.
• the pressing of the brake pedal 5 is mandatory, for safety reasons, to release the lever from the position P, therefore before the RD restart of the engine 2, in order to avoid putting the vehicle 1 into motion during the RD restart. , which could cause a collision between the vehicle 1 and a wall, for example, or a pedestrian passing near the vehicle 1.
• the engine 2 is in operation
• phase I of Figure 2 if the user positions the gearbox 6 in parking position P, and that the engine 2 is in operation, it is sufficient for the driver to push and then release the brake pedal 5, or release the brake pedal 5 if the brake pedal 5 was already depressed, to allow the stopping of the engine 2.
• the stop A of the engine 2 is effective until the driver engages not the brake pedal 5, and the stop A of the engine 2 intervenes only if the driver releases the brake pedal 5.
• the chronograms of the chronogram of FIG. 2 are chronologically described.
• phase I the engine 2 is turned on, the driver depresses the brake pedal 5, positions the gearbox 6 on the parking position P and then releases the brake pedal 5. This results in a stop A of the engine 2.
• the phases II and III respectively represent the decrease of the torque C of the engine 2 and the total absence of torque C.
• the gearbox 6 is maintained in the parking position P and the pedal 5 of brake is released.
• phase IV shows a depression of the brake pedal 5 by the driver, which coincides with a restart RD of the engine 2 until the nominal torque C of the engine 2 is reached.
• the available torque C is the nominal torque C of the motor 2.
• phase I the engine 2 is on, the driver releases the brake pedal 5 and the gearbox 6 is in the neutral position N. This results in a stop A of the engine 2.
• phase II there is a decrease in the torque C of the engine 2 until complete absence of torque C.
• phase III the driver positions the speed box 6 in parking position P without acting on the brake pedal 5.
• the engine 2 then remains stopped until the driver depresses the brake pedal 5 as can be seen in phase IV. It then results a restart RD of the engine 2 and an increase of the torque C until the nominal torque C.
• the driver RD restart will be anticipated.
• the nominal torque C offered by the engine 2 will be available.
• the beginning of the increase phase of the torque C coincides with the detection of the depression of the brake pedal 5 and the RD restart of the vehicle 1.
• the stop function and automatic restart of the vehicle 1 is preserved and even improved since it can work even if the vehicle 1 is equipped with a manual parking brake and the driver does not disable it or not entirely.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Transportation (AREA)
• Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
• Control Of Driving Devices And Active Controlling Of Vehicle (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=52808014

Family Applications (1)

Country Status (4)

Families Citing this family (3)

Family Cites Families (14)

• 2015
  • 2015-02-02 FR FR1550775A patent/FR3032164B1/fr active Active
• 2016
  • 2016-01-22 EP EP16703595.5A patent/EP3253963A1/de not_active Withdrawn
  • 2016-01-22 CN CN201680008021.5A patent/CN107531240A/zh active Pending
  • 2016-01-22 WO PCT/FR2016/050128 patent/WO2016124834A1/fr active Application Filing

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