EP2917084A1 - Procede de commande d'un groupe motopropulseur pour ajuster le regime moteur en fonction de la puissance electrique consommee par des elements de chauffage - Google Patents
Procede de commande d'un groupe motopropulseur pour ajuster le regime moteur en fonction de la puissance electrique consommee par des elements de chauffageInfo
- Publication number
- EP2917084A1 EP2917084A1 EP13779616.5A EP13779616A EP2917084A1 EP 2917084 A1 EP2917084 A1 EP 2917084A1 EP 13779616 A EP13779616 A EP 13779616A EP 2917084 A1 EP2917084 A1 EP 2917084A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine speed
- control unit
- electronic control
- engine
- electrical
- 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- Withdrawn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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating devices
- B60H1/02—Heating, cooling or ventilating devices the heat being derived from the propulsion plant
- B60H1/14—Heating, cooling or ventilating devices the heat being derived from the propulsion plant other than from cooling liquid of the plant
- B60H1/143—Heating, cooling or ventilating devices the heat being derived from the propulsion plant other than from cooling liquid of the plant the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
-
- 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
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
- B60W30/1882—Controlling power parameters of the driveline, e.g. determining the required power characterised by the working point of the engine, e.g. by using engine output chart
-
- 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
- B60W30/188—Controlling power parameters of the driveline, e.g. determining the required power
- B60W30/1886—Controlling power supply to auxiliary devices
-
- 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
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
-
- 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
- B60W10/30—Conjoint control of vehicle sub-units of different type or different function including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
-
- 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
-
- 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
- F02D41/08—Introducing corrections for particular operating conditions for idling
- F02D41/083—Introducing corrections for particular operating conditions for idling taking into account engine load variation, e.g. air-conditionning
Definitions
- the invention relates to a method for controlling a power unit of a motor vehicle.
- the invention more particularly relates to a control method of a powertrain of a motor vehicle, the powertrain comprising:
- an internal combustion engine which is capable of rotating a motor shaft at a controlled engine speed
- an electronic control unit which is able to estimate the optimum engine speed in order to reduce the fuel consumption according to rolling parameters, such as the vehicle speed and / or the engine load.
- the alternator is driven by the motor shaft to produce an electric power which is used to maintain a low voltage battery of the vehicle in a state of charge determined, and / or to supply certain electrical consumers on board the vehicle.
- the gear ratio at which the alternator is driven by the drive shaft is set so that at maximum engine speed, the alternator is not damaged.
- the alternator does not produce enough electrical power to cover the demand of electric heating consumers.
- the invention proposes to solve this problem in particular by applying a method of the type described above, characterized in that the method comprises the following steps:
- the engine speed calculated during the second step is greater than or equal to the optimum engine speed estimated by the electronic control unit
- the electric power is evaluated according to a measurement of the outside temperature and according to a measurement making it possible to estimate the amount of heat released by the engine which is likely to be transmitted to the passenger compartment, the electrical power thus evaluated decreasing when the estimate of the heat released by the powertrain increases, so that during the second stage the engine speed is adjusted downward to produce the power evaluated in the first step;
- the evaluated electrical power is equal to the sum of the instantaneous electrical powers actually required by all the activated electric heating consumers
- At least one electrical consumer is activated manually
- At least one electrical consumer is automatically activated by the electronic control unit, in particular according to the measured outside temperature
- the vehicle comprises a battery for powering the consumers, the electronic control unit being able to evaluate the state of charge of the battery so that, in the first step, the electric power required to recharge the battery is added; evaluating the electrical power required so that, in the second stage, the engine speed is adjusted to allow the battery to be recharged by the alternator;
- the powertrain comprises a cooling circuit in which circulates a heat transfer fluid, the means for estimating the amount of heat released by the powertrain comprising a sensor which is able to measure the temperature of the heat transfer fluid;
- the powertrain comprises a gearbox which is capable of transmitting the rotational movement of the drive shaft to a transmission shaft with a gear ratio selected, the electronic control unit being able to calculate the optimum gear ratio. to be selected according to the adjusted engine speed calculated in the second step.
- FIG. 1 is a schematic view showing a motor vehicle which comprises a powertrain, a battery and electrical consumers;
- FIG. 2 is a block diagram which represents a control method of the powertrain produced according to the teachings of the invention
- FIG. 3 is a diagram which represents curves of evolution of the stabilized engine speed as a function of the temperature of the coolant used for the cooling of the engine.
- FIG. 1 shows a motor vehicle which is equipped with a power unit 12.
- the powertrain 12 comprises in particular an internal combustion engine 14 which is capable of rotating a motor shaft 16.
- the rotational speed of the motor shaft 16 will subsequently be called “Rm engine speed”.
- the motor shaft 16 is intended to drive a transmission shaft 18 via a gearbox 20.
- the transmission shaft 18 is itself coupled with the driving wheels 19 of the vehicle 10.
- the gearbox 20 comprises means (not shown) for varying the gear ratio between the motor shaft 16 and the shaft 18 of transmission.
- One of said gear ratios “G” is selectable and engaged by the driver according to different driving parameters.
- the selection and the commitment of the gear ratio "G” selected are automatically controlled by an electronic control unit.
- gear ratios can vary continuously.
- the vehicle 10 also comprises a low voltage electrical network 22.
- the electrical network 22 is powered by an alternator 24.
- the alternator 24 is a rotating electrical machine comprising a rotor (not shown) which is capable of being rotated in order to produce electric current.
- the electrical power produced by the alternator 24 depends in particular on the speed of rotation of the rotor. For simplicity, the rotation speed of the rotor will subsequently be called “speed" Ralt "rotation of the alternator 24".
- the alternator 24 is rotated by the motor shaft 16 with a determined fixed "k” ratio.
- the speed “Ralt” of rotation of the alternator 24 is equal to the product of the fixed "k” fixed ratio multiplied by the engine speed "Rm”, namely:
- the electric network 22 is also powered by a battery
- the battery 26 of accumulators that can store electrical energy.
- the battery 26 can be recharged by the alternator 24 when its state of charge "SOC" is below a threshold “Ssoc” determined minimum.
- the electric network 22 comprises electric heating consumers 28 which are capable of being powered by the alternator 24 and / or by the battery 26.
- Electrical consumers 28 are, for example, electrical means for heating a passenger compartment of the vehicle, means for defrosting the windows, or any other electrical means of heating a vehicle element.
- Some electric consumers 28 are activated manually on command of the driver. Other Electrical consumers 28 are likely to be activated automatically by the electronic control unit 30 in cold weather.
- the driver controls the running speed of the vehicle through a pedal (not shown) acceleration.
- an electronic control unit In order to reduce fuel consumption and pollutant emissions, an electronic control unit is able to estimate the optimum "Rmopt" engine speed to reduce fuel consumption according to driving parameters, such as the speed of the vehicle. vehicle 10 and / or the engine load 12.
- the electronic control unit calculates the optimum gear ratio "G" to be engaged in the gearbox in order to get as close as possible to the optimum "Rmopt” engine speed.
- Such a strategy for controlling the "Rm” engine speed is particularly effective when the motor shaft 16 rotates at a steady speed "Rm", that is to say when the vehicle speed and the engine load remain substantially constant during a fixed term.
- the driver When the selection of the speed ratio "G" is controlled by the driver of the vehicle 10, the driver is informed by the electronic control unit via a suitable interface, such as a screen, of the "G" ratio of optimum speeds. to engage at any time.
- a suitable interface such as a screen
- the invention proposes a control method of the powertrain group which comprises the following steps:
- the electric power "Pc” is evaluated as a function of a measurement of the outside temperature "Text” and as a function of a measurement allowing estimate the amount of heat "Tm” released by the engine 14 which is likely to be transmitted to the passenger compartment, for example by means of a heater.
- the vehicle 10 comprises means 32 for measuring the outside temperature "Text", such as a temperature sensor which is arranged outside the vehicle 10 and which is capable of communicating with the electronic unit 30 control a signal representative of the outside temperature.
- a temperature sensor which is arranged outside the vehicle 10 and which is capable of communicating with the electronic unit 30 control a signal representative of the outside temperature.
- the vehicle 10 also comprises means 34 for estimating the amount of heat generated by the operation of the engine 12 which is likely to be transmitted to the passenger compartment via a heater.
- the power unit 12 comprises a cooling circuit (not shown) in which a coolant circulates. Just before being cooled, the heat transfer fluid has absorbed heat from the engine 14.
- the means 34 for estimating the amount of heat released by the powertrain 12 comprise a sensor which is able to measure the temperature of the coolant just before it cools. . This sensor is capable of communicating to the electronic control unit the temperature "Tm" of the coolant. This temperature "Tm” is a measure for estimating the amount of heat released by the 12 powertrain group that can be transmitted to the cabin.
- the measurement of the outside temperature "Text” makes it possible to deduce the temperature inside the passenger compartment from the start of the vehicle 10.
- the unit It is deduced from this that the user of the vehicle is able to activate heating consumers 28 to raise the temperature inside the passenger compartment.
- a theoretical map to determine the electrical power "Pc" required to heat the cabin according to the external temperature “Text” and the temperature “Tm” of the heat transfer fluid is stored in the electronic control unit. This map is then stored in the electronic control unit to enable the electrical power "Pc" required during the first step "E1" to be determined.
- the electronic control unit 30 calculates the engine speed "Rm” which will allow the alternator 24 to rotate at a speed sufficient to cover the electrical power requirements "Pc" of the consumers.
- the engine speed “Rm” calculated in the second step “E2” is greater than or equal to the optimum engine speed "Rmopt” estimated by the electronic control unit to minimize fuel consumption.
- the electronic control unit 30 is able to calculate the optimum gear ratio "G" to be selected to obtain the adjusted engine speed "Rm" calculated in the second step "E2".
- the method is reiterated at a determined frequency throughout the engine running time to ensure that the battery 26 still has a state of charge "SOC" sufficient to allow the start of the engine 14.
- the engine speed “Rm” is adjusted to be greater than the engine speed “Rmopt” optimal.
- the engine speed “Rm” is then adjusted downward during subsequent iterations of the process.
- FIG. 3 a diagram which represents the engine speed "Rm” adjusted for a speed of 40 km. h “1 of the vehicle 10 as a function of the temperature" Tm "of the heat transfer fluid
- Each of the three curves" C1, C2, C3 "represents the evolution of the engine speed” Rm “adjusted for an outside temperature” Text "determined since the cold start of the engine 14.
- the curve “C1” represents the evolution of the engine speed “Rm” adjusted when the external "Text” temperature is equal to -15 ° C.
- the curve “C2” represents the evolution of the engine speed “Rm” adjusted when the external “Text” temperature is equal to -5 ° C.
- the curve “C3” represents the evolution of the engine speed “Rm” adjusted when the external "Text” temperature is equal to 5 ° C.
- the adjusted engine speed "Rm” first follows a step at a higher value than the optimum engine speed “Rmopt”. This bearing is extended in time until the temperature “Tm” of the heat transfer fluid exceeds a first threshold "S1" beyond which the heat transmissible to the cabin is sufficient to participate in the warming of the passenger compartment.
- the values of the first threshold "S1" and the second threshold “S2” depend on the outside temperature "Text”. Thus, each of these two thresholds “S1, S2" has a value even higher than the external temperature "Text" is low.
- the electrical power is evaluated by detecting the number of consumers 28 activated and taking into account the electrical power actually required to operate all activated consumers.
- each consumer 28 comprises means for signaling its activation to the electronic control unit.
- the electronic control unit is thus able to calculate the instantaneous electrical power actually required for all activated electric heater consumers.
- the electronic control unit 30 is able to evaluate the state of charge "SOC" of the battery 26 so that, during the first step “E1", the electric power required to recharge the battery 26 is added. to the evaluation of the electrical power required. In this way, during the second step “E2", the engine speed "Rm” is adjusted to allow the power supply of the activated consumers 28 and the recharging of the battery 26 by the alternator 24.
- the invention also makes it possible to control the rotational speed "Ralt" of the alternator 24 while maintaining a fixed ratio drive means "k" of the alternator 24.
- a drive means is simple and inexpensive .
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1260639A FR2998005B1 (fr) | 2012-11-09 | 2012-11-09 | Procede de commande d'un groupe motopropulseur pour ajuster le regime moteur en fonction de la puissance electrique consommee par des elements de chauffage |
| PCT/EP2013/072094 WO2014072173A1 (fr) | 2012-11-09 | 2013-10-22 | Procede de commande d'un groupe motopropulseur pour ajuster le regime moteur en fonction de la puissance electrique consommee par des elements de chauffage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2917084A1 true EP2917084A1 (fr) | 2015-09-16 |
Family
ID=48040307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13779616.5A Withdrawn EP2917084A1 (fr) | 2012-11-09 | 2013-10-22 | Procede de commande d'un groupe motopropulseur pour ajuster le regime moteur en fonction de la puissance electrique consommee par des elements de chauffage |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP2917084A1 (fr) |
| FR (1) | FR2998005B1 (fr) |
| WO (1) | WO2014072173A1 (fr) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56154308A (en) * | 1980-04-29 | 1981-11-28 | Nippon Soken Inc | Electric room heater for car |
| DE19745849A1 (de) * | 1997-10-16 | 1999-04-22 | Bosch Gmbh Robert | Einrichtung zur Energieverteilung in einem Kraftfahrzeug |
| US6262400B1 (en) * | 2000-10-03 | 2001-07-17 | Delphi Technologies, Inc. | Control method for a resistance heater in a vehicle heating system |
| EP2108803B1 (fr) * | 2008-04-10 | 2017-11-15 | MAHLE Behr GmbH & Co. KG | Procédé de chauffage d'une cellule passager |
-
2012
- 2012-11-09 FR FR1260639A patent/FR2998005B1/fr not_active Expired - Fee Related
-
2013
- 2013-10-22 WO PCT/EP2013/072094 patent/WO2014072173A1/fr not_active Ceased
- 2013-10-22 EP EP13779616.5A patent/EP2917084A1/fr not_active Withdrawn
Non-Patent Citations (2)
| Title |
|---|
| None * |
| See also references of WO2014072173A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2998005A1 (fr) | 2014-05-16 |
| WO2014072173A1 (fr) | 2014-05-15 |
| FR2998005B1 (fr) | 2017-11-24 |
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