EP1874606A2 - Procede et systeme de commande de decollage d'un vehicule automobile par dialogue du calculateur de controle moteur avec la boite de vitesses mecanique pilotee, pendant un redemarrage du vehicule en mode "stop and start" - Google Patents
Procede et systeme de commande de decollage d'un vehicule automobile par dialogue du calculateur de controle moteur avec la boite de vitesses mecanique pilotee, pendant un redemarrage du vehicule en mode "stop and start"Info
- Publication number
- EP1874606A2 EP1874606A2 EP06726292A EP06726292A EP1874606A2 EP 1874606 A2 EP1874606 A2 EP 1874606A2 EP 06726292 A EP06726292 A EP 06726292A EP 06726292 A EP06726292 A EP 06726292A EP 1874606 A2 EP1874606 A2 EP 1874606A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- time
- dem
- speed
- predetermined
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000012795 verification Methods 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000446 fuel Substances 0.000 claims description 5
- 238000013475 authorization Methods 0.000 abstract description 5
- 239000007858 starting material Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
-
- 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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18018—Start-stop drive, e.g. in a traffic jam
-
- 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
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0638—Engine speed
- B60W2510/0652—Speed change rate
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/06—Combustion engines, Gas turbines
- B60W2510/0676—Engine temperature
-
- 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
- B60W2540/10—Accelerator 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
- B60W2540/10—Accelerator pedal position
- B60W2540/103—Accelerator thresholds, e.g. kickdown
-
- 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 present invention relates to a method and a control system of take-off of a motor vehicle by dialogue of the engine control computer with the mechanical gearbox controlled during a restart of the vehicle in "Stop and Start” mode.
- a system called “Stop and Start” is characterized by stopping the engine just before and during the immobilization of the vehicle (traffic lights, traffic jams, etc.). It is reset automatically and instantly when you release the brake pedal when the driver wants to leave.
- a “Stop and Start” system brings very perceptible benefits during the phases of engine standby: comfort for the passengers, physical comfort by eliminating engine vibrations and driving pleasure, not to mention a saving in fuel consumption fuel.
- the operating point at which the controlled mechanical gearbox (BVMP) starts the actual vehicle "take-off” (or advance) is indicated by the engine control computer (CMM) at the mechanical controlled gearbox (BVMP).
- CCM engine control computer
- the BVMP is a gearbox with electronic clutch and shift management. It allows automatic or sequential shifting at the initiative of the driver.
- the indication by the CMM to the BVMP is made via the CAN bus in the form of a "flag", called “BVMP take-off authorization".
- a flag is a variable whose value is set to 0 or 1 depending on an event; we then test the value of the "flag" to know if the marked event occurred or not.
- the CAN (Controller Area Network) bus is a network communication protocol for connecting the onboard equipment of a motor vehicle.
- An object of the present invention is to provide a method of dialogue of the CMM with the BVMP, during a restart of the "Stop and Start" type of the vehicle, which allows to ensure a quick takeoff of the vehicle with an optimal approval, and with a maximum robustness and repeatability in different driving situations (starting on flat, downhill, uphill, starting from a zero or no speed, etc.).
- Another object of the present invention is to provide a method for preparing the takeoff authorization flag, which allows, thanks to the dialogue with the BVMP, a "take-off" of the vehicle quickly and smoothly in the traction chain. , and therefore with an optimal approval for the driver.
- Another object of the present invention is to provide a take-off system for a motor vehicle with a "Stop and Start” system associated with a BVMP and means for controlling the "effective take-off" of the vehicle transmitted to said BVMP in the form information developed according to the method of the invention.
- a method for controlling the take-off of a motor vehicle in "Stop and Start” mode, after cutting off the fuel injection which comprises the following steps:
- the method comprises the step of controlling the fuel injection over a period of time until said autonomous condition is verified. .
- the calculation and verification of said autonomous condition relating to a time t comprises the following steps:
- the comparison of the value of the speed gradient with respect to time with a predetermined threshold value as a function of the engine speed is validated after the lapse of a time delay.
- Said regime gradient with respect to time is determined from the current regime and the computation rate (n-1), initialized to zero.
- the invention also provides a motor vehicle take-off control system, with a CMM and an BVMP, which further comprises:
- Said control signal or "takeoff clearance” is a signal sent by the engine control computer of the vehicle to the mechanical gearbox driven in the form of a flag.
- FIG. 1 is a graph representative of the evolution of the engine speed as a function of time
- FIG. 2 is a graph representative of the speed gradient threshold as a function of the engine speed
- FIG. 3 illustrates the expected operation of the invention in the case of a start-up or restart from a zero-rated engine speed
- FIG. 4 illustrates the expected operation of the invention in the case of a restart before the engine speed has reached the zero value.
- the take-off clearance indication is made when the following three conditions are fulfilled, cumulatively.
- First condition Cl the "Autonomous Condition” is true.
- Second condition C2 "Alpha pedal”> Threshold S A i Ph a
- Third condition C3 exit condition of the injection phase "full intelligent group”.
- the graph of FIG. 1 represents the evolution of the engine speed, namely the speed of the crankshaft expressed in revolutions per minute, as a function of time. After a first period, referenced a, which is a phase under electric machine only, the engine rises over a period referenced b with a first combustion represented by the section of steep slope C 1 . The representative curve of the regime goes through a maximum and the speed is set substantially constant over the idling speed value R. This value can be about 750 revolutions per minute.
- A represents the take-off clearance at the BVMP.
- the “autonomous condition” is defined by a threshold or “gauge” or “calibration” on the engine speed gradient with respect to time as a function of the engine speed.
- the gradient gradient threshold Grad_N_dem is determined as a function of the current speed by a graph or "calibration" of the shape shown in the drawing of FIG. 2.
- the current speed is the engine speed calculated from the time spent to perform the last half-turn motor. This calibration makes sure:
- the optimal calibration is determined from vehicle tests, such as: take-off on flat terrain, downhill, uphill with quantitative measures of slope downs and subjective estimate of driving pleasure.
- the gradient gradient threshold is corrected by a gain, a function of the water temperature T WATER designated K_Grad_N_dem (vertical expansion).
- the N_dem input speed is corrected for the water temperature by K_N_dem (horizontal expansion).
- the autonomous condition is true if the following inequality is satisfied: dN / dt> K_Grad_N_dem (T WATER ) * Grad_N_dem (K_N_dem (T WATER ) * N_current) N_current, used is the average speed on a half-turn engine calculated by the calculator of CMM motor control.
- the regime gradient with respect to time (dN / dt) is determined from the current regime and from the computation rate (n-1) initialized to zero.
- the rpm is, like the rpm, recalculated every half-turn of the engine.
- the startup device In the first situation, represented by point 2 of Figure 4, the autonomous condition is not satisfied, which is reflected by the position of point 2 under the template. Therefore, the startup device must be powered to validate the autonomous condition; which power, in terms of graphical representation, is ironed above the template, as can be seen in Figure 4 by the path in solid lines.
- the autonomous condition is satisfied, which is expressed by the position of point 2' above the template; the starter does not need to be powered; in this case the short dashed path remains entirely above the template.
- the second condition or condition C2 is expressed in this form:
- Threshold S A i P ha “Alpha pedal” is representative of the position of the accelerator pedal desired by the driver, while Threshold S A i Pha is a threshold value, predetermined, constant, which can be calibrated.
- the third condition or condition C3 is achieved by the output of the injection phase "full intelligent group".
- Intelligent full group is the phase that corresponds to the first three injections that take place simultaneously from the beginning of the engine rotation (on all cylinders, with the exception of the one that is in the intake phase at the engine stop, for which one could inject gasoline that would be sent directly to the exhaust). At the end of this phase, we go into phased sequential injection and the third condition is validated.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0550886A FR2884184B1 (fr) | 2005-04-06 | 2005-04-06 | Procede et dispositif d'elaboration d'une commande d'arret et de redemarrage d'un moteur de vehicule automobile. |
PCT/FR2006/050278 WO2006106254A2 (fr) | 2005-04-06 | 2006-03-31 | Procede et systeme de commande de decollage d'un vehicule automobile par dialogue du calculateur de controle moteur avec la boite de vitesses mecanique pilotee, pendant un redemarrage du vehicule en mode 'stop and start' |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1874606A2 true EP1874606A2 (fr) | 2008-01-09 |
Family
ID=35385739
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06726292A Withdrawn EP1874606A2 (fr) | 2005-04-06 | 2006-03-31 | Procede et systeme de commande de decollage d'un vehicule automobile par dialogue du calculateur de controle moteur avec la boite de vitesses mecanique pilotee, pendant un redemarrage du vehicule en mode "stop and start" |
Country Status (4)
Country | Link |
---|---|
US (1) | US7881835B2 (fr) |
EP (1) | EP1874606A2 (fr) |
FR (1) | FR2884184B1 (fr) |
WO (1) | WO2006106254A2 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008040662A1 (de) * | 2008-07-24 | 2010-01-28 | Zf Friedrichshafen Ag | Verfahren zum Betreiben eines Antriebsstrangs |
DE102008040661B4 (de) * | 2008-07-24 | 2024-02-08 | Zf Friedrichshafen Ag | Verfahren zum Betreiben eines Antriebsstrangs |
DE102008040660A1 (de) | 2008-07-24 | 2010-01-28 | Zf Friedrichshafen Ag | Verfahren zum Betreiben eines Antriebsstrangs |
DE102010028072A1 (de) * | 2010-04-22 | 2011-10-27 | Zf Friedrichshafen Ag | Verfahren zur Anfahrsteuerung eines Kraftfahrzeugs |
CN102390376B (zh) * | 2011-10-11 | 2014-07-09 | 广州汽车集团股份有限公司 | 发动机智能启停系统及用于汽车的智能启停方法 |
GB2519158A (en) * | 2013-10-14 | 2015-04-15 | Gm Global Tech Operations Inc | Method of controlling an automatic engine stop during coasting phase |
US10089116B2 (en) | 2016-03-18 | 2018-10-02 | Uber Technologies, Inc. | Secure start system for an autonomous vehicle |
US9946890B2 (en) * | 2016-03-18 | 2018-04-17 | Uber Technologies, Inc. | Secure start system for an autonomous vehicle |
DE102019106771A1 (de) * | 2019-03-18 | 2020-09-24 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren und System zur On-Board-Diagnose in einem Fahrzeug |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5653659A (en) * | 1995-09-27 | 1997-08-05 | Isuzu Motors Limited | Automatic engine stop-start system |
DE19849059A1 (de) * | 1998-10-24 | 2000-04-27 | Zahnradfabrik Friedrichshafen | Verfahren zur Steuerung eines Automatgetriebes eines Kraftfahrzeuges bei einer spontanen Gas-/Pedalrücknahme |
DE19957269A1 (de) * | 1998-12-02 | 2000-06-08 | Luk Getriebe Systeme Gmbh | Kraftfahrzeug |
DE60015230T2 (de) * | 1999-05-12 | 2005-12-29 | Nissan Motor Co., Ltd., Yokohama | Automatische Stop-Startanlage für Verbrennungsmotor für Kraftfahrzeuge |
US10135253B2 (en) * | 2000-12-29 | 2018-11-20 | Abb Schweiz Ag | System, method and computer program product for enhancing commercial value of electrical power produced from a renewable energy power production facility |
DE10250729A1 (de) * | 2002-10-31 | 2004-05-13 | Daimlerchrysler Ag | Betätigungseinrichtung für eine Kupplung, Antriebsstrang eines Kraftfahrzeugs und Verfahren zum Betrieb des Antriebsstrangs |
DE10307462B4 (de) | 2003-02-21 | 2019-02-28 | Robert Bosch Gmbh | Verfahren zur Steuerung der Antriebseinheit eines Fahrzeugs |
-
2005
- 2005-04-06 FR FR0550886A patent/FR2884184B1/fr not_active Expired - Fee Related
-
2006
- 2006-03-31 EP EP06726292A patent/EP1874606A2/fr not_active Withdrawn
- 2006-03-31 WO PCT/FR2006/050278 patent/WO2006106254A2/fr active Application Filing
- 2006-03-31 US US11/910,852 patent/US7881835B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006106254A2 * |
Also Published As
Publication number | Publication date |
---|---|
US20080318731A1 (en) | 2008-12-25 |
FR2884184A1 (fr) | 2006-10-13 |
FR2884184B1 (fr) | 2007-06-08 |
WO2006106254A3 (fr) | 2006-12-28 |
US7881835B2 (en) | 2011-02-01 |
WO2006106254A2 (fr) | 2006-10-12 |
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RIC1 | Information provided on ipc code assigned before grant |
Ipc: F16D 48/06 20060101ALI20111024BHEP Ipc: B60W 10/10 20060101ALI20111024BHEP Ipc: B60W 10/00 20060101AFI20111024BHEP Ipc: F16D 48/08 20060101ALI20111024BHEP Ipc: B60W 30/18 20060101ALI20111024BHEP Ipc: B60W 10/02 20060101ALI20111024BHEP Ipc: B60W 10/06 20060101ALI20111024BHEP Ipc: F16H 59/78 20060101ALI20111024BHEP Ipc: F16H 59/74 20060101ALI20111024BHEP Ipc: F16D 48/10 20060101ALI20111024BHEP |
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18D | Application deemed to be withdrawn |
Effective date: 20120405 |