WO2024256440A1 - Procede d'alimentation d'un dispositif de chauffe pour catalyseur - Google Patents
Procede d'alimentation d'un dispositif de chauffe pour catalyseur Download PDFInfo
- Publication number
- WO2024256440A1 WO2024256440A1 PCT/EP2024/066180 EP2024066180W WO2024256440A1 WO 2024256440 A1 WO2024256440 A1 WO 2024256440A1 EP 2024066180 W EP2024066180 W EP 2024066180W WO 2024256440 A1 WO2024256440 A1 WO 2024256440A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- switch
- battery
- electric machine
- heating device
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/04—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric, e.g. electrostatic, device other than a heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/10—Parameters used for exhaust control or diagnosing said parameters being related to the vehicle or its components
- F01N2900/104—Battery status
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES
- F01N2900/00—Details of electrical control or of the monitoring of the exhaust gas treating apparatus
- F01N2900/06—Parameters used for exhaust control or diagnosing
- F01N2900/16—Parameters used for exhaust control or diagnosing said parameters being related to the exhaust apparatus, e.g. particulate filter or catalyst
- F01N2900/1602—Temperature of exhaust gas apparatus
Definitions
- the invention relates to the field of a motor vehicle comprising a heat engine and equipped with a pollution control device with a heating device.
- the invention also relates to a method for supplying power to the heating device of the pollution control device.
- a thermal motor vehicle now includes a catalyst, otherwise known as a “catalytic converter”, which helps to depollute the exhaust gases emitted by the vehicle's thermal engine.
- the catalyst may in particular be an electrically heated catalyst, commonly called “EHC” for “Electrical Heated Catalyst” in English.
- EHC Electrically heated Catalyst
- This type of catalyst comprises a heating device for rapidly increasing the temperature in the catalyst to control gas emissions even when the motor vehicle is cold, i.e. when starting.
- the heating device comprises in particular a resistor.
- Such a vehicle generally comprises a battery and an electric machine, more precisely a direct current machine.
- the direct current machine is capable of operating in two operating modes: a motor operating mode, in which the direct current machine converts electrical energy into mechanical energy in order to start the heat engine, and a generator operating mode, in which the electric machine converts the mechanical rotational energy of the engine into electrical energy to store it in the battery.
- the battery is for example a 12 Volt, 24 Volt or 48 Volt battery.
- the heating device is coupled to an electrical network via a specific control device and is configured to connect or not the heating device to the electrical network and therefore heat or not the catalytic converter.
- the invention relates to a device for supplying a device for heating a catalyst for a motor vehicle with a heat engine, said vehicle comprising an electrical network, a battery, a DC/DC voltage converter, a first switch, a second switch and an electric machine, the battery being adapted to operate in a recharge mode in which it stores electrical energy, and in a discharge mode in which it supplies electrical energy.
- the first switch is coupled to the catalyst and the electric machine and is adapted to be either in a closed circuit position electrically coupling the catalyst and the electric machine to allow the temperature of the catalyst to rise, or in an open circuit position, allowing the electrical isolation of the catalyst from the electric machine
- the second switch is coupled on the one hand to the electric machine and to the first switch, and on the other hand to the DC/DC voltage converter, the second switch is adapted to be either in a closed circuit position, allowing the electrical coupling between the electric machine and the battery through the DC/DC voltage converter to allow its recharging, or in an open circuit position electrically isolating the battery from the electric machine.
- the electric machine is adapted to deliver a voltage of 24 Volts, or 48 Volts.
- the DC/DC voltage converter is a step-down converter.
- the DC/DC voltage converter is a bidirectional converter.
- the battery is a 12-Volt battery.
- the invention relates to a method for powering a heating device for a motor vehicle with a heat engine, said vehicle comprising an electrical network, a catalyst capable of depolluting the exhaust gases emitted by the heat engine and comprising an electric heating device, a battery, a DC/DC voltage converter, an electric machine, a first switch adapted to switch between a closed circuit state and an open circuit state, a second switch adapted to switch between a closed circuit state and an open circuit state.
- Said method comprises the following steps: e1) checking an open circuit state of the first switch corresponding to a catalyst not electrically heated, e2) detecting a need to activate the electric heating device of the catalyst, e3) determining the electrical power required to reach a threshold temperature (Tthreshold) of the catalyst and determining the electrical power of the battery, in the case where the power of the battery is below a charge level Nthreshold then moving to a fourth step e4); in the case where the battery power is above a charge level Nseuilcharg then move on to a fifth step e5); e4) checking that the second switch is in an open circuit state then positioning the first switch in the closed circuit state to couple the electric machine to the heating device, e6) controlling the electric machine so as to generate an electric power allowing the temperature of the catalyst to rise, e7) checking the temperature of the catalyst, e8) stopping the heating device and positioning the second switch in an open circuit state when the temperature of the catalyst is at least equal to the threshold temperature, e5) comparing the amount of electric
- Figure 1 illustrates an embodiment of the vehicle according to the invention
- FIG. 2 Figure 2 illustrates a more detailed embodiment of the invention
- Figure 3 illustrates an exemplary embodiment of the method of the invention
- Figure 4 illustrates another example of embodiment of the method of the invention.
- the invention is suitable for being installed in a thermal vehicle 1 or a hybrid vehicle comprising a thermal engine M.
- the vehicle 1 also comprises an electrical network 10, a catalyst 20, a battery 30, an electric machine 40 and an electronic control unit 50.
- the thermal engine M is for example controlled by an engine control computer (not shown in the figures) also mounted in the vehicle 1.
- the electrical network 10 makes it possible to supply electrical energy to the equipment of the vehicle 1.
- the electrical network 10 comprises at least one electrical line mounted in the vehicle 1 and electrically connected to the equipment to be supplied.
- the catalyst 20 is for example positioned at the outlet of the heat engine M, and has the function of depolluting the exhaust gases emitted by the heat engine M, before the exhaust gases are emitted outside the vehicle 1.
- the catalyst 20 makes it possible to transform the carbon monoxide and hydrocarbons in the exhaust gases into carbon dioxide and water.
- the catalyst 20 transforms the carbon monoxide and nitrogen dioxide in the exhaust gases into carbon dioxide.
- a high temperature in the catalyst 20 makes it possible to accelerate the chemical reactions that occur in the catalyst 20, in order to quickly and effectively depollute the exhaust gases of the heat engine M.
- the catalyst 20 comprises an electric heating device 21 making it possible to heat the interior of the catalyst 20. This is why this type of catalyst 20 can also be called “electrically heated catalyst” in English, by those skilled in the art.
- the heating device 21 notably comprises a heating resistor.
- the invention proposes, in order to avoid 24 Volt or 48 Volt electronics, the use of an electrical machine 40 capable of providing a voltage of 24 Volts or 48 Volts.
- the electrical machine 40 is coupled on the one hand to a first switch 60 and on the other hand to a second switch 70.
- the first switch 60 is also coupled to the heating device 21, itself coupled to the catalyst 20 which is not shown in FIG. 2.
- the first switch 60 is capable, depending on a determined strategy, of being either in a closed position, allowing the passage of electrical energy to the heating device 21 to heat the catalyst 20, or in an open position, allowing the electrical isolation of the heating device 21 from the rest of the electrical circuit 10.
- the second switch 70 is also coupled to a DC/DC voltage converter 80.
- the second switch 70 is capable, depending on a determined strategy, of being either in a closed position, allowing the passage of electrical energy, or in an open position, allowing electrical isolation from the rest of the electrical circuit, that is to say of the heating device 21 as well as of the electric machine 40.
- the DC/DC converter 80 is capable of converting the voltage of a value of the order of 24 Volts or 48 Volts delivered by the electric machine 40 into a voltage compatible with the voltage admissible by the battery 30, for example 12 Volts.
- the DC/DC converter 80 is a unidirectional voltage-stepping converter.
- the DC/DC converter 80 is adapted to, on the one hand, convert the voltage coming from the electric battery 30 into a voltage compatible with the heating device 21, i.e. 24 Volts or 48 Volts, and, on the other hand, is adapted to convert the voltage of a value of the order of 24 Volts or 48 Volts, delivered by the electric machine 40 into a voltage compatible with the voltage admissible by the battery 30, for example 12 Volts.
- the DC/DC converter 80 is said to be bidirectional.
- the battery 30 is a 12 Volt battery and it is adapted to be coupled to the on-board network of the vehicle 1.
- Figure 3 shows a first embodiment of the method of the invention corresponding to the use of a unidirectional DC/DC converter 80.
- Said method comprises a first step e1, during which the heating device 21 is in a rest state, that is to say it is not activated to heat the catalyst 20; the first switch 60 is in an open state, that is to say the heating device 21 is electrically isolated from the rest of the electrical circuit 10 of the vehicle 1.
- the method of the invention detects the need to activate the heating resistor 21 of the catalyst 20 in order to raise the temperature of the catalyst 20.
- This step can be carried out using an electronic structure of the electronic calculator type adapted to record the temperature of the catalyst 20 and/or control the heating device 21 as well as the electric machine 40.
- the method of the invention proposes moving to a third step e3. In the event that no need to heat the catalyst 20 is detected, the method loops to the second step e2.
- the amount of electrical power required to heat the catalyst 20 is studied, i.e. the electrical energy or electrical power required to raise the temperature of the catalyst 20 to a threshold temperature called Tthreshold making the catalysis effective for the depollution of the gases.
- Tthreshold a threshold temperature
- the analyses of the measured parameters are easy for those skilled in the art and they will not be specified here.
- the effective temperature of the catalyst 20, and/or the engine speed, and/or the gas flow rates can be measured to estimate, based for example on manufacturer data stored in a memory (not presented here), the electrical power required to raise the temperature of the catalyst 20 as quickly as possible.
- the state of charge of the battery 30 is also analyzed by the electronic computer.
- the method of the invention cleverly proposes to take into consideration the state of charge of the battery 30 to power or not the heating device 21.
- the method proposes to move on to the fourth step e4.
- the method of the invention proposes to move on to a fifth step e5.
- the electric machine 40 is controlled so that it generates the electrical power necessary for the heating device 21 to allow the temperature of the catalyst 20 to rise.
- the electric machine 40 can generate a variable electrical voltage allowing real-time control of the temperature of the catalyst 20. This control of the electrical voltage of the electric machine 40 in function of the electrical power required by the catalyst 20 can be carried out by the electronic computer.
- a seventh step e7 the temperature of the catalyst 20 is recorded and analyzed and the electric machine 40 is controlled to provide the necessary power until the catalyst 20 reaches its threshold temperature.
- the method of the invention comprises an eighth step e8 consisting of deactivating the heating of the catalyst 20 by switching the first switch 60 to an open state.
- the method of the invention proposes the transition to a fifth step e5.
- this fifth step e5 cleverly the method proposes to switch to a closed state the second switch 70 and the first switch 60 so as to couple the heating device 21 to the DC/DC converter 80 and also to the direct current machine 40.
- the DC/DC converter 80 and the electric machine 40 are also controlled so that they jointly generate the electrical power required by the heating device 21 to allow the temperature of the catalyst 20 to rise.
- This function is, for example, carried out by an electronic computer.
- the method of the invention comprises a tenth step e10 consisting of deactivating the heating of the catalyst 20 by switching the second switch 70 to an open state and alternately by switching the first switch 60 to an open state.
- the electrical machine 40 as well as the DC/DC converter 80 are controlled so as to no longer supply electrical energy to the heating device 21.
- Figure 4 shows a second embodiment of the method of the invention corresponding to the use of a bidirectional DC/DC converter 80.
- Said method comprises a first step e1, during which the heating device 21 is in a rest state, that is to say it is not activated to heat the catalyst 20; the first switch 60 is in an open state, that is to say the heating device 21 is electrically isolated from the rest of the electrical circuit 10 of the vehicle 1.
- the method of the invention detects the need to activate the heating resistor 21 of the catalyst 20 in order to raise the temperature of the catalyst 20.
- This step can be carried out using an electronic structure of the electronic calculator type adapted to record the temperature of the catalyst 20 and/or control the heating device 21 as well as the electric machine 40.
- the method of the invention proposes moving to a third step e3. In the case where no need to heat the catalyst 20 is detected, the method loops to the second step e2.
- the method according to the invention consists during the thirtieth step e30 of choosing either heating the heating device 21 using the electric machine 40 only symbolized by the passage to a fourth step e4, or of using the electrical energy of the electric machine 40 to provide both electrical energy to heat the heating device 21 and to recharge the battery 30 symbolized by the passage to a thirty-first step e31.
- the DC/DC converter will be actuated to ensure that the electrical energy is delivered to the battery 30.
- the electric machine 40 is controlled so that it generates the electrical power required by the heating device 21 to allow the temperature of the catalyst 20 to rise.
- the electric machine 40 can generate a variable electrical voltage allowing real-time control of the temperature of the catalyst 20. This control of the electrical voltage of the electric machine 40 as a function of the electrical power required by the catalyst 20 can be carried out by the electronic computer.
- the method of the invention comprises an eighth step e8 consisting of deactivating the heating of the catalyst 20 by switching the first switch 60 to an open state.
- the invention it is possible to control the heating of the catalyst 20 without having complex electronics and especially compatible with an electrical voltage equal to 24 Volts or 48 Volts. It is also, thanks to the method of the invention, possible to heat the catalyst 20 using the electric machine 40 without generating electrical or electromagnetic disturbances on the rest of the electrical network 10 thanks to the presence of the second switch 70 and its open state during the heating of the catalyst 20.
- the thirty-first step e31 consists of switching the second switch 70 and the first switch 60 to a closed state to couple the heating device 21 and therefore the catalyst 20 to the electric machine 40. It is then proposed to move on to a thirty-second step e32.
- the effective temperature of the catalyst 20, and/or the engine speed, and/or the gas flow rates, as well as the state of charge of the battery 30 can be measured to estimate, based for example on manufacturer data stored in a memory (not presented here), the electrical power necessary for the temperature rise of the catalyst
- the method proposes moving on to an eleventh step e11.
- the method proposes to switch the second switch 70 to a closed state and to switch the first switch 60 to an open state in order to isolate the electric machine 40.
- the method proposes to switch the second switch 70 to a closed state and to switch the first switch 60 to an open state in order to isolate the electric machine 40.
- the method then proposes the transition to a twelfth step e12.
- the method of the invention comprises a fourteenth step e14 consisting of deactivating the heating of the catalyst 20. by switching the second switch 70 to an open state and/or by stopping the control of the DC/DC converter 80.
- the method proposes to switch the second switch 70 to an open state in order to isolate the heating device 21 and the electric machine 40 from the rest of the electric circuit 10 of the vehicle 1.
- the first switch 60 is also switched to a closed state in order to couple the catalyst 20 to the electric machine 40. It is then proposed to move on to a fifteenth step e15.
- the electric machine 40 is controlled so that it generates the electrical power required by the heating device 21 to allow the temperature of the catalyst 20 to rise.
- the electric machine 40 can generate a variable electrical voltage allowing real-time control of the temperature of the catalyst 20. This control of the electrical voltage of the electric machine 40 as a function of the electrical power required by the catalyst 20 can be carried out by the electronic computer.
- the temperature of the catalyst 20 is recorded and analyzed and the electric machine 40 is controlled to provide the necessary power until the catalyst 20 reaches its threshold temperature.
- the method of the invention comprises a seventeenth step e17 consisting of deactivating the heating of the catalyst 20 by switching the first switch 60 to an open state.
- the method of the invention comprises a twentieth step e20 consisting of deactivating the heating of the catalyst 20 by switching the first switch 60 and the second switch 70 to an open state.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020267001359A KR20260021791A (ko) | 2023-06-16 | 2024-06-12 | 촉매 변환기용 가열 디바이스에 전력을 공급하는 방법 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2306186A FR3149929A1 (fr) | 2023-06-16 | 2023-06-16 | Dispositif d’alimentation d’un dispositif de chauffe pour catalyseur et procédé d’alimentation d’un dispositif de chauffe pour catalyseur |
| FRFR2306186 | 2023-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024256440A1 true WO2024256440A1 (fr) | 2024-12-19 |
Family
ID=88291032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/066180 Pending WO2024256440A1 (fr) | 2023-06-16 | 2024-06-12 | Procede d'alimentation d'un dispositif de chauffe pour catalyseur |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR20260021791A (fr) |
| FR (1) | FR3149929A1 (fr) |
| WO (1) | WO2024256440A1 (fr) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180156144A1 (en) * | 2015-06-01 | 2018-06-07 | Tpr Co., Ltd. | Vehicle power storage system and method of controlling the vehicle power storage system |
| DE102022111026A1 (de) * | 2021-05-20 | 2022-11-24 | Ford Global Technologies, Llc | Systeme und verfahren zum bereitstellen von wärme an einen katalysator eines nachbehandlungssystems |
-
2023
- 2023-06-16 FR FR2306186A patent/FR3149929A1/fr active Pending
-
2024
- 2024-06-12 KR KR1020267001359A patent/KR20260021791A/ko active Pending
- 2024-06-12 WO PCT/EP2024/066180 patent/WO2024256440A1/fr active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180156144A1 (en) * | 2015-06-01 | 2018-06-07 | Tpr Co., Ltd. | Vehicle power storage system and method of controlling the vehicle power storage system |
| DE102022111026A1 (de) * | 2021-05-20 | 2022-11-24 | Ford Global Technologies, Llc | Systeme und verfahren zum bereitstellen von wärme an einen katalysator eines nachbehandlungssystems |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20260021791A (ko) | 2026-02-13 |
| FR3149929A1 (fr) | 2024-12-20 |
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