US20090266050A1 - Method for controlling the regeneration of an electrostatic particle filter - Google Patents
Method for controlling the regeneration of an electrostatic particle filter Download PDFInfo
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- US20090266050A1 US20090266050A1 US11/721,592 US72159205A US2009266050A1 US 20090266050 A1 US20090266050 A1 US 20090266050A1 US 72159205 A US72159205 A US 72159205A US 2009266050 A1 US2009266050 A1 US 2009266050A1
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- Prior art keywords
- regeneration
- particulate filter
- controlling
- engine
- computer
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Classifications
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- 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
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- 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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- 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
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/027—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles 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
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/033—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices
- F01N3/035—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters in combination with other devices with catalytic reactors, e.g. catalysed diesel particulate filters
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- 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
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
- F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2300/00—Purposes or special features of road vehicle drive control systems
- B60Y2300/47—Engine emissions
- B60Y2300/476—Regeneration of particle filters
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- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0625—Fuel consumption, e.g. measured in fuel liters per 100 kms or miles per gallon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
- F02D2200/0804—Estimation of the temperature of the exhaust gas treatment apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0812—Particle filter loading
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- 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 a method for controlling the regeneration of an electrostatic particulate filter fitted to the exhaust pipe of the internal combustion engine of a motor vehicle.
- the regeneration is carried out by electrical heating of the particulate filter. It is triggered according to operating parameters of the motor vehicle which are sent to a computer.
- particulate filters inserted in the exhaust pipes of the engines. These particulate filters are arranged to trap the soot particles contained in the exhaust gases.
- Electronically-managed regeneration systems periodically burn the particles trapped in the particulate filters and prevent clogging of the filters.
- soot particles burn at temperatures of the order of 500 to 600° C.
- heat levels are only rarely reached by the exhaust gases of a diesel automobile engine since for example in town the temperature of the exhaust gases varies between 150° and 250° C. This is why there is a need to have appropriate means for heating the soot directly without relying on the gases.
- the activation of such assisted regeneration systems is electronically managed by a control computer which determines, on the basis of a certain number of parameters, the moment of regeneration.
- the electrical power required by the electrical equipment such as an electrical heating element, is supplied directly by the engine via the alternator.
- the regeneration of the particulate filter can therefore cause an overconsumption of fuel or, if the alternator cannot supply the instantaneous power, a discharging of the battery.
- the object of the present invention consists in limiting the fuel consumption due to an electrical heating system used for the regeneration of a particulate filter.
- the invention proposes that the regeneration control computer receive parameters for determining the fuel consumption linked to the production of electricity for the means of heating necessary for regeneration.
- the parameters derived from the vehicle are, for example, the pedal positions, the vehicle speed, and the gear engaged.
- FIG. 1 illustrates a schematic view of an internal combustion engine fitted with a particulate filter, using the method according to the invention.
- FIG. 2 illustrates a flowchart of the method according to the invention.
- FIG. 1 illustrates in a non-limiting manner the use of the proposed regeneration principle.
- An internal combustion engine 1 is designed to be fitted to a vehicle such as an automobile. It is, for example, a turbocharged diesel engine with four cylinders in line and direct fuel injection. The engine 1 is fitted with an exhaust pipe 5 provided with a device for filtering out soot particles. The engine 1 is fed with air by an intake circuit 2 .
- Suitable sensors and, in particular, a flow sensor 8 are fitted to the intake circuit 2 to supply to a control computer 3 , parameters relating to, for example, the pressure feeding the engine 1 .
- the injection of the fuel into the cylinders is provided by electromagnetic injectors, not illustrated, discharging into the combustion chambers and electronically managed by the control computer 3 from a pressurized fuel system 4 , of the high pressure common rail type. Leaving the engine 1 , the exhaust gases evacuated through the pipe 5 , pass through a particulate filter 6 .
- Various sensors 7 such as pressure and temperature sensors, installed upstream and downstream of the particulate filter 6 , supply corresponding parameters to the control computer 3 . It is also intended to fit the exhaust pipe with an oxidizing catalyst unit 10 treating the unburned hydrocarbon HC and carbon monoxide CO emissions. A portion of the exhaust gases is returned to the intake by means of a recycling system 11 including a valve 12 of which the opening is electronically managed by the control computer 3 .
- the turbocharger comprises, conventionally, a turbine 13 and a compressor 14 .
- the control computer 3 comprises, in a limiting manner, a microprocessor or central processing unit CPU, at least one random access memory, at least one read only memory, at least one analog to digital converter and at least one input/output interface.
- the microprocessor of the control computer 3 comprises electronic circuits and suitable software programs, designed in particular for the various electronically managed actuators.
- the computer 3 controls the pressure of the fuel in the common rail 4 and the opening of the injectors using the parameters sent by the various sensors, and in particular the weight of intake air, the engine speed as well as formulae and stored calibrations for reaching the desired levels of consumption and performance.
- the opening of the injectors is more particularly defined by the moment when injection starts and the opening time of the injectors, time which for a given feed pressure corresponds to a quantity of fuel injected and therefore to a richness of the mixture filling the combustion chambers.
- the computer 3 is also arranged to provide the control of the operation of the exhaust system, and in particular the particulate filter 6 .
- the triggering of the regeneration of the particulate filter 6 is controlled by the computer 3 which also determines its continuation or its interruption.
- the regeneration phase consists essentially of directly increasing the temperature of the soot, so as to burn the trapped particles.
- the temperature increase is started, for example, by electrical heating means such as metal wires.
- the computer 3 takes into account various parameters, relating to the particulate filter 6 itself and the vehicle, for triggering the regeneration, for example, the temperatures of the engine coolant, the gases upstream and downstream of the particulate filter 6 , the vehicle speed, the weight of soot which has accumulated in the particulate filter 6 and the distance traveled since the last regeneration.
- the computer 3 also receives other parameters relating to the fuel consumption due to the production of electricity for operating the heating system.
- the latter parameters can comprise the pedal position Pf, Pacc, the vehicle speed V, the gear engaged H, the engine speed N, and the engine torque M.
- FIG. 2 is illustrated a flowchart of the proposed particulate filter regeneration control method.
- the computer reads various parameters such as the level of loading of the particulate filter A, the vehicle speed V, the gas pedal position Pacc, the engine torque M, the engine speed N, the gear engaged H, and the temperature T of the particulate filter.
- a first check is carried out on the level of the loading of the filter 6 .
- S 1 a preset threshold below which regeneration is not necessary, called Smini, the next stage is stage 17 , and there is no regeneration.
- stage 12 If the level of the loading A is higher than S 1 , the next stage is stage 12 .
- the next stage 14 is the regeneration.
- the regeneration is activated by means of the electrical energy recovered by regenerative braking. Regenerative braking takes place when the vehicle mode is driving with braking: the alternator recovers the kinetic energy of the vehicle as electrical energy to feed the heating means.
- the level of loading A is then compared with a second preset threshold, called S 2 (high back-pressure which requires a regeneration to be carried out without waiting for the driver to brake).
- This threshold S 2 is higher than S 1 and is lower than a threshold at which regeneration becomes compulsory, called Smax.
- stage 15 consists of the computer 3 selecting the values of various parameters affecting the fuel consumption, for example, the vehicle speed V, the gas pedal position Pacc, the engine torque M, the engine speed N, the gear engaged H, and the temperature T of the particulate filter.
- the efficiency F of the engine is calculated using the selected parameters.
- the values of the various parameters enable the computer 3 to make a comparison between the efficiency G of the engine which would be obtained with a regeneration and the efficiency F of the engine obtained without regeneration.
- a map of the efficiency G of the engine obtained with a regeneration is stored by the computer 3 .
- a map of the efficiency G is illustrated based on the following parameters: the engine torque M and the engine speed N.
- the values read by the computer 3 are used to determine the efficiency F of the engine from the stored map.
- the efficiency F of the engine is compared with the efficiency of the engine obtained with a regeneration G. If the regeneration improves the efficiency of the engine, it is started, and the next stage is stage 14 .
- the level of loading of the particulate filter A is compared with the Smax threshold at stage 18 .
- stage 17 If the level of loading A is lower than Smax, the regeneration is not carried out, this is stage 17 .
Abstract
A method for controlling regeneration of a particle filter by electrically heating the particle filter. According to the method, the regeneration is triggered by a calculator according to a loading level and temperature of the particle filter. The calculator simultaneously uses parameters relating to the operation of the vehicle so as to take into account the fuel consumption driven by the electrical heating of the filter.
Description
- The invention relates to a method for controlling the regeneration of an electrostatic particulate filter fitted to the exhaust pipe of the internal combustion engine of a motor vehicle.
- The regeneration is carried out by electrical heating of the particulate filter. It is triggered according to operating parameters of the motor vehicle which are sent to a computer.
- Among the known systems for eliminating the soot particles emitted by internal combustion engines and in particular diesel engines, mention can be made of particulate filters inserted in the exhaust pipes of the engines. These particulate filters are arranged to trap the soot particles contained in the exhaust gases.
- Electronically-managed regeneration systems periodically burn the particles trapped in the particulate filters and prevent clogging of the filters.
- It is desirable for the regeneration of a particulate filter not to adversely effect the performance and to leave the smallest possible impact on the fuel costs of the engine.
- In fact, the soot particles burn at temperatures of the order of 500 to 600° C. However, such heat levels are only rarely reached by the exhaust gases of a diesel automobile engine since for example in town the temperature of the exhaust gases varies between 150° and 250° C. This is why there is a need to have appropriate means for heating the soot directly without relying on the gases.
- Various regeneration systems have been proposed, in particular, electrical resistance heating systems, raising the temperature of the exhaust gases to a value which is sufficient to bring about the combustion of the particles in the particulate filter.
- The activation of such assisted regeneration systems is electronically managed by a control computer which determines, on the basis of a certain number of parameters, the moment of regeneration. However, the electrical power required by the electrical equipment, such as an electrical heating element, is supplied directly by the engine via the alternator. The regeneration of the particulate filter can therefore cause an overconsumption of fuel or, if the alternator cannot supply the instantaneous power, a discharging of the battery.
- The object of the present invention consists in limiting the fuel consumption due to an electrical heating system used for the regeneration of a particulate filter.
- For this purpose, the invention proposes that the regeneration control computer receive parameters for determining the fuel consumption linked to the production of electricity for the means of heating necessary for regeneration.
- According to other features of the invention, the parameters derived from the vehicle are, for example, the pedal positions, the vehicle speed, and the gear engaged.
- Other features and advantages of the invention will emerge from the reading of the description of embodiments with reference to the attached drawings.
-
FIG. 1 illustrates a schematic view of an internal combustion engine fitted with a particulate filter, using the method according to the invention. -
FIG. 2 illustrates a flowchart of the method according to the invention. - Identical or similar elements are designated by the same reference numbers.
-
FIG. 1 illustrates in a non-limiting manner the use of the proposed regeneration principle. - An
internal combustion engine 1 is designed to be fitted to a vehicle such as an automobile. It is, for example, a turbocharged diesel engine with four cylinders in line and direct fuel injection. Theengine 1 is fitted with an exhaust pipe 5 provided with a device for filtering out soot particles. Theengine 1 is fed with air by anintake circuit 2. - Suitable sensors and, in particular, a
flow sensor 8, are fitted to theintake circuit 2 to supply to acontrol computer 3, parameters relating to, for example, the pressure feeding theengine 1. The injection of the fuel into the cylinders is provided by electromagnetic injectors, not illustrated, discharging into the combustion chambers and electronically managed by thecontrol computer 3 from a pressurizedfuel system 4, of the high pressure common rail type. Leaving theengine 1, the exhaust gases evacuated through the pipe 5, pass through aparticulate filter 6. - Various sensors 7, such as pressure and temperature sensors, installed upstream and downstream of the
particulate filter 6, supply corresponding parameters to thecontrol computer 3. It is also intended to fit the exhaust pipe with an oxidizingcatalyst unit 10 treating the unburned hydrocarbon HC and carbon monoxide CO emissions. A portion of the exhaust gases is returned to the intake by means of arecycling system 11 including avalve 12 of which the opening is electronically managed by thecontrol computer 3. The turbocharger comprises, conventionally, aturbine 13 and acompressor 14. - The
control computer 3 comprises, in a limiting manner, a microprocessor or central processing unit CPU, at least one random access memory, at least one read only memory, at least one analog to digital converter and at least one input/output interface. The microprocessor of thecontrol computer 3 comprises electronic circuits and suitable software programs, designed in particular for the various electronically managed actuators. - The
computer 3 controls the pressure of the fuel in thecommon rail 4 and the opening of the injectors using the parameters sent by the various sensors, and in particular the weight of intake air, the engine speed as well as formulae and stored calibrations for reaching the desired levels of consumption and performance. The opening of the injectors is more particularly defined by the moment when injection starts and the opening time of the injectors, time which for a given feed pressure corresponds to a quantity of fuel injected and therefore to a richness of the mixture filling the combustion chambers. - The
computer 3 is also arranged to provide the control of the operation of the exhaust system, and in particular theparticulate filter 6. The triggering of the regeneration of theparticulate filter 6 is controlled by thecomputer 3 which also determines its continuation or its interruption. - As stated above, the regeneration phase consists essentially of directly increasing the temperature of the soot, so as to burn the trapped particles. The temperature increase is started, for example, by electrical heating means such as metal wires.
- In accordance with the invention, the
computer 3 takes into account various parameters, relating to theparticulate filter 6 itself and the vehicle, for triggering the regeneration, for example, the temperatures of the engine coolant, the gases upstream and downstream of theparticulate filter 6, the vehicle speed, the weight of soot which has accumulated in theparticulate filter 6 and the distance traveled since the last regeneration. - In accordance with the invention, the
computer 3 also receives other parameters relating to the fuel consumption due to the production of electricity for operating the heating system. The latter parameters can comprise the pedal position Pf, Pacc, the vehicle speed V, the gear engaged H, the engine speed N, and the engine torque M. - In this manner, a compromise can be found for carrying out the regeneration while avoiding overconsumption of fuel or discharging of the battery.
- In
FIG. 2 is illustrated a flowchart of the proposed particulate filter regeneration control method. - At
stage 10, the computer reads various parameters such as the level of loading of the particulate filter A, the vehicle speed V, the gas pedal position Pacc, the engine torque M, the engine speed N, the gear engaged H, and the temperature T of the particulate filter. - At
stage 11, after thecomputer 3 has read as a parameter the level of loading of the particulate filter A, a first check is carried out on the level of the loading of thefilter 6. - If the level of loading A is lower than a preset threshold called S1, S1 is higher than a threshold below which regeneration is not necessary, called Smini, the next stage is
stage 17, and there is no regeneration. - If the level of the loading A is higher than S1, the next stage is
stage 12. - At
stage 12, a second check is carried out on the brake pedal position Pf. - If the brake pedal position Pf is active, read as Pf=1, the
next stage 14 is the regeneration. The regeneration is activated by means of the electrical energy recovered by regenerative braking. Regenerative braking takes place when the vehicle mode is driving with braking: the alternator recovers the kinetic energy of the vehicle as electrical energy to feed the heating means. - If the brake pedal position is inactive, read as Pf=0, then the next stage is
stage 13 where another check is carried out on the loading of the particulate filter. The level of loading A is then compared with a second preset threshold, called S2 (high back-pressure which requires a regeneration to be carried out without waiting for the driver to brake). This threshold S2 is higher than S1 and is lower than a threshold at which regeneration becomes compulsory, called Smax. - If the level of loading A is higher than S2, the next stage is
stage 15. Thisstage 15 consists of thecomputer 3 selecting the values of various parameters affecting the fuel consumption, for example, the vehicle speed V, the gas pedal position Pacc, the engine torque M, the engine speed N, the gear engaged H, and the temperature T of the particulate filter. - To determine whether there is an overconsumption of fuel, initially, the efficiency F of the engine is calculated using the selected parameters.
- The values of the various parameters enable the
computer 3 to make a comparison between the efficiency G of the engine which would be obtained with a regeneration and the efficiency F of the engine obtained without regeneration. - To do that, a map of the efficiency G of the engine obtained with a regeneration is stored by the
computer 3. For example, for an internal combustion engine, a map of the efficiency G is illustrated based on the following parameters: the engine torque M and the engine speed N. The values read by thecomputer 3 are used to determine the efficiency F of the engine from the stored map. The efficiency F of the engine is compared with the efficiency of the engine obtained with a regeneration G. If the regeneration improves the efficiency of the engine, it is started, and the next stage isstage 14. - If not, the level of loading of the particulate filter A is compared with the Smax threshold at
stage 18. - If the level of loading A is lower than Smax, the regeneration is not carried out, this is
stage 17. - If the level of loading A is higher than Smax, the regeneration is then started immediately.
Claims (12)
1-11. (canceled)
12. A method for controlling regeneration of a particulate filter by electrically heating the particulate filter, according to which the regeneration is triggered by a computer on the basis of a level of loading and temperature of the particulate filter, wherein the computer uses simultaneously parameters linked to an operation of the vehicle so as to take into account fuel consumption caused by electrical heating of the particulate filter.
13. The method for controlling regeneration of a particulate filter as claimed in claim 12 , wherein the parameters include a brake pedal position.
14. The method for controlling regeneration of a particulate filter as claimed in claim 12 , wherein the computer activates the regeneration of the particulate filter:
if the level of loading is higher than a first preset threshold;
and if the brake pedal position is active.
15. The method for controlling regeneration of a particulate filter as claimed in claim 14 , wherein the first preset threshold is higher than a threshold below which regeneration is not necessary.
16. The method for controlling regeneration of a particulate filter as claimed in claim 14 , wherein the computer activates the regeneration of the particulate filter:
if the level of loading is higher than a second preset threshold which is higher than the first preset threshold;
and if the brake pedal position is not active;
and if an efficiency of the engine, calculated using selected parameters, is lower than an efficiency of the engine that would be obtained with a regeneration of the particulate filter.
17. The method for controlling regeneration of a particulate filter as claimed in claim 16 , where the second preset threshold is lower than a threshold at which regeneration is compulsory.
18. The method for controlling regeneration of a particulate filter as claimed in claim 16 , wherein the parameters include a gear engaged.
19. The method for controlling regeneration of a particulate filter as claimed in claim 16 , wherein the parameters include a gas pedal position.
20. The method for controlling regeneration of a particulate filter as claimed in claim 16 , wherein the parameters include vehicle speed.
21. The method for controlling regeneration of a particulate filter as claimed in claim 16 , wherein the parameters include engine speed.
22. The method for controlling regeneration of a particulate filter as claimed in claim 16 , wherein the parameters include engine torque.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR04-52934 | 2004-12-13 | ||
FR0452934A FR2879242A1 (en) | 2004-12-13 | 2004-12-13 | METHOD FOR CONTROLLING THE REGENERATION OF AN ELECTROSTATIC PARTICLE FILTER |
PCT/FR2005/051052 WO2006064148A1 (en) | 2004-12-13 | 2005-12-07 | Method for controlling the regeneration of an electrostatic particle filter |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090266050A1 true US20090266050A1 (en) | 2009-10-29 |
Family
ID=34953835
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/721,592 Abandoned US20090266050A1 (en) | 2004-12-13 | 2005-12-07 | Method for controlling the regeneration of an electrostatic particle filter |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090266050A1 (en) |
EP (1) | EP1827893A1 (en) |
JP (1) | JP2008523300A (en) |
FR (1) | FR2879242A1 (en) |
WO (1) | WO2006064148A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9976459B2 (en) | 2012-03-13 | 2018-05-22 | Jaguar Land Rover Limited | Regeneration of diesel particle filter |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4434200B2 (en) | 2006-12-27 | 2010-03-17 | トヨタ自動車株式会社 | Vehicle control device |
Citations (7)
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US5458673A (en) * | 1992-11-26 | 1995-10-17 | Nippon Soken, Inc. | Exhaust gas particulate purifying process for internal combustion engine |
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DE9209978U1 (en) * | 1992-07-24 | 1992-11-12 | Nord, Klaus Juergen, 6800 Mannheim, De | |
DE4243990A1 (en) * | 1992-12-23 | 1994-07-07 | Magnet Motor Gmbh | Motor vehicle, in particular city bus, with a diesel engine / generator unit |
DE10026471B4 (en) * | 1999-06-25 | 2007-07-05 | Man Nutzfahrzeuge Ag | Powertrain of a motor vehicle |
JP3706956B2 (en) * | 2000-06-15 | 2005-10-19 | トヨタ自動車株式会社 | Exhaust gas purification member regeneration device |
-
2004
- 2004-12-13 FR FR0452934A patent/FR2879242A1/en not_active Withdrawn
-
2005
- 2005-12-07 US US11/721,592 patent/US20090266050A1/en not_active Abandoned
- 2005-12-07 JP JP2007544962A patent/JP2008523300A/en not_active Withdrawn
- 2005-12-07 EP EP05824400A patent/EP1827893A1/en not_active Withdrawn
- 2005-12-07 WO PCT/FR2005/051052 patent/WO2006064148A1/en not_active Application Discontinuation
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US4899540A (en) * | 1987-08-21 | 1990-02-13 | Donaldson Company, Inc. | Muffler apparatus with filter trap and method of use |
US5458673A (en) * | 1992-11-26 | 1995-10-17 | Nippon Soken, Inc. | Exhaust gas particulate purifying process for internal combustion engine |
US6422001B1 (en) * | 2000-10-10 | 2002-07-23 | Bae Systems Controls Inc. | Regeneration control of particulate filter, particularly in a hybrid electric vehicle |
US6952918B2 (en) * | 2001-06-26 | 2005-10-11 | Isuzu Motors Limited | Regenerative control method for continuous regenerative diesel particulate filter device |
US6901751B2 (en) * | 2002-02-01 | 2005-06-07 | Cummins, Inc. | System for controlling particulate filter temperature |
US6912848B2 (en) * | 2002-08-09 | 2005-07-05 | General Electric Company | Particulate filter aftertreatment of diesel engine exhaust |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US9976459B2 (en) | 2012-03-13 | 2018-05-22 | Jaguar Land Rover Limited | Regeneration of diesel particle filter |
Also Published As
Publication number | Publication date |
---|---|
WO2006064148A8 (en) | 2007-10-04 |
JP2008523300A (en) | 2008-07-03 |
EP1827893A1 (en) | 2007-09-05 |
WO2006064148A1 (en) | 2006-06-22 |
FR2879242A1 (en) | 2006-06-16 |
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