WO1997010965A1 - Procede de limitation du couple d'une transmission automatique - Google Patents
Procede de limitation du couple d'une transmission automatique Download PDFInfo
- Publication number
- WO1997010965A1 WO1997010965A1 PCT/FR1996/001467 FR9601467W WO9710965A1 WO 1997010965 A1 WO1997010965 A1 WO 1997010965A1 FR 9601467 W FR9601467 W FR 9601467W WO 9710965 A1 WO9710965 A1 WO 9710965A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- torque
- engine
- signal
- value
- speed
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 claims abstract description 3
- 238000002347 injection Methods 0.000 claims description 9
- 239000007924 injection Substances 0.000 claims description 9
- 239000000446 fuel Substances 0.000 claims description 7
- 238000010586 diagram Methods 0.000 claims description 6
- 230000001970 hydrokinetic effect Effects 0.000 claims description 3
- 238000013507 mapping Methods 0.000 claims description 2
- 238000005562 fading Methods 0.000 claims 1
- 230000009467 reduction Effects 0.000 description 3
- 238000004378 air conditioning Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response 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
- 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
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
-
- 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
-
- 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
-
- 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
- B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0666—Engine torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/36—Inputs being a function of speed
- F16H59/46—Inputs being a function of speed dependent on a comparison between speeds
- F16H2059/465—Detecting slip, e.g. clutch slip ratio
- F16H2059/467—Detecting slip, e.g. clutch slip ratio of torque converter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
Definitions
- the present invention relates to the control of automatic transmissions. More specifically, it relates to a method of limiting the torque enabling the engine control system to reduce the input torque of an automatic transmission with stage ratios or with continuous variation.
- Modern vehicles are more and more frequently provided with equipment or accessories that consume a lot of engine power - such as air conditioning, de-icing glazing, servo-control devices, etc. - the engagement of which is most often random in relation to the operation of the engine and the transmission.
- engine power such as air conditioning, de-icing glazing, servo-control devices, etc. - the engagement of which is most often random in relation to the operation of the engine and the transmission.
- the object of the present invention is to limit the input torque of an automatic transmission to what is strictly necessary, only insofar as this limitation is essential to avoid overloading the transmission. It relates to a method for limiting the input torque of an automatic transmission provided with a hydrokinetic torque converter and associated with a drive motor. This process is characterized in that:
- a limit value ⁇ ⁇ àa is defined.
- engine speed ⁇ m not to be exceeded to avoid overloading the transmission, and
- the afr value is determined using a diagram highlighting the nominal mapping of the turbine torque C T as a function of the engine speed ⁇ m for different values of the gear ratio i, and parameterized in d p , where O p is the angular position of the accelerator, or a quantity characterizing the opening of the fuel metering member.
- c ⁇ T is determined, in the diagram defined above, by the intersection of the characteristic curve of the converter corresponding to the ratio (i) calculated as indicated above, and of the straight line representing the admissible limit torque C T - Cr ".
- the invention also provides that the theoretical nominal operating point of the engine is determined for which the latter would have a speed ⁇ * greater than the measured value aC, from the values of
- FIG. 1 presents in particular a family of parabolas, the apex of which is at the origin, which illustrate, in accordance with the classical theory of hydrokinetic torque converters, the evolution of the turbine torque C T of a converter as a function of the engine speed ⁇ m of the drive motor of an automatic transmission.
- This family of dishes corresponds to different values of the ratio
- i -.
- the invention proposes to draw up the diagram in FIG. 1 of the vehicle concerned and to measure at all times the engine and turbine speeds ⁇ Z and co r
- the invention provides for storing in the transmission management computer the curve ⁇ ⁇ ° conventionally expressing the value of ⁇ fi? according to the ratio (i), calculated for example, according to a relation of the type:
- the signal A alTii) can be used through a appropriate corrector, of the PID (Proportional Integral Derivative) type, for example by the motorized throttle control computer gas intake of a gasoline engine or electronic diesel injection pump, to control the engine torque so that the input torque of the transmission is at most equal to the value dr.
- PID Proportional Integral Derivative
- the same signal A ⁇ ⁇ T (i) can be used by the injection computer to limit the engine torque by acting on the fuel flow and / or the point of advance to the ignition of a positive-ignition engine and, where appropriate, on the discharge valve, or "waste-gate", of the turbo ⁇ compressor.
- the invention provides for generating an all-or-nothing control signal when ⁇ dT (/) is negative.
- Such a signal can in particular be used to control a pneumatic torque reduction solenoid valve which makes the working chamber of the lung of the injection pump of a turbo-compressed diesel engine communicate with the atmosphere.
- the object of the invention is to limit to the strict minimum the reduction in torque essential so as not to overload an automatic transmission.
- the measures and operations necessary for its implementation are managed without difficulty by the computer of a automatic transmission, with gear ratios or not, associated with a petrol or diesel engine of any type.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- General Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96932621A EP0851814A1 (fr) | 1995-09-22 | 1996-09-20 | Procede de limitation du couple d'une transmission automatique |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR95/11136 | 1995-09-22 | ||
FR9511136A FR2739064B1 (fr) | 1995-09-22 | 1995-09-22 | Procede de limitation du couple d'une transmission automatique |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997010965A1 true WO1997010965A1 (fr) | 1997-03-27 |
Family
ID=9482829
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1996/001467 WO1997010965A1 (fr) | 1995-09-22 | 1996-09-20 | Procede de limitation du couple d'une transmission automatique |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0851814A1 (fr) |
FR (1) | FR2739064B1 (fr) |
WO (1) | WO1997010965A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2322457A (en) * | 1997-02-21 | 1998-08-26 | Nissan Motor | Engine control system which reduces thermal deterioration of a torque converter |
EP1053904A2 (fr) * | 1999-05-17 | 2000-11-22 | Eaton Corporation | Contrôle du couple pour ensemble de propulsion |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6684148B2 (en) * | 2002-06-12 | 2004-01-27 | Nacco Materials Handling Group, Inc. | Transmission control system |
US8135531B2 (en) | 2002-06-12 | 2012-03-13 | Nmhg Oregon, Llc | Predictive vehicle controller |
US8775039B2 (en) | 2003-10-20 | 2014-07-08 | Nmhg Oregon, Llc | Dynamically adjustable inch/brake overlap for vehicle transmission control |
FR2881795A1 (fr) * | 2005-02-08 | 2006-08-11 | Peugeot Citroen Automobiles Sa | Procede de controle de l'inversion de la puissance dans un systeme comportant un convertisseur de couple et ensemble mecanique integrant ledit procede |
JP6031166B1 (ja) * | 2015-09-11 | 2016-11-24 | 富士重工業株式会社 | 車両の自動運転制御装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5065319A (en) * | 1989-12-12 | 1991-11-12 | Toyota Jidosha Kabushiki Kaisha | Power control system for vehicles |
US5305213A (en) * | 1991-05-09 | 1994-04-19 | Eaton Corporation | Driveline torque limit control strategy-using SAE J1922 type engine control |
DE4321413A1 (de) * | 1993-06-26 | 1995-01-05 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Antriebsleistung eines Fahrzeugs |
US5403245A (en) * | 1992-05-28 | 1995-04-04 | Mitsubishi Denki Kabushiki Kaisha | Control device for vehicular engine having an automatic transmission and its control method |
-
1995
- 1995-09-22 FR FR9511136A patent/FR2739064B1/fr not_active Expired - Fee Related
-
1996
- 1996-09-20 WO PCT/FR1996/001467 patent/WO1997010965A1/fr not_active Application Discontinuation
- 1996-09-20 EP EP96932621A patent/EP0851814A1/fr not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5065319A (en) * | 1989-12-12 | 1991-11-12 | Toyota Jidosha Kabushiki Kaisha | Power control system for vehicles |
US5305213A (en) * | 1991-05-09 | 1994-04-19 | Eaton Corporation | Driveline torque limit control strategy-using SAE J1922 type engine control |
US5403245A (en) * | 1992-05-28 | 1995-04-04 | Mitsubishi Denki Kabushiki Kaisha | Control device for vehicular engine having an automatic transmission and its control method |
DE4321413A1 (de) * | 1993-06-26 | 1995-01-05 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung der Antriebsleistung eines Fahrzeugs |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2322457A (en) * | 1997-02-21 | 1998-08-26 | Nissan Motor | Engine control system which reduces thermal deterioration of a torque converter |
GB2322457B (en) * | 1997-02-21 | 1999-04-07 | Nissan Motor | Engine control system which reduces thermal deterioration of a torque converter |
US5948037A (en) * | 1997-02-21 | 1999-09-07 | Nissan Motor Co., Ltd. | Engine control system which reduces thermal deterioration of a torque converter |
EP1053904A2 (fr) * | 1999-05-17 | 2000-11-22 | Eaton Corporation | Contrôle du couple pour ensemble de propulsion |
EP1053904A3 (fr) * | 1999-05-17 | 2001-01-03 | Eaton Corporation | Contrôle du couple pour ensemble de propulsion |
US6636795B1 (en) | 1999-05-17 | 2003-10-21 | Eaton Corporation | Powertrain torque control |
Also Published As
Publication number | Publication date |
---|---|
FR2739064B1 (fr) | 1997-10-31 |
FR2739064A1 (fr) | 1997-03-28 |
EP0851814A1 (fr) | 1998-07-08 |
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