EP4314518A1 - Amélioration d'un dispositif de conversion au bioéthanol agencé pour produire un signal d'injection adapte - Google Patents
Amélioration d'un dispositif de conversion au bioéthanol agencé pour produire un signal d'injection adapteInfo
- Publication number
- EP4314518A1 EP4314518A1 EP22712656.2A EP22712656A EP4314518A1 EP 4314518 A1 EP4314518 A1 EP 4314518A1 EP 22712656 A EP22712656 A EP 22712656A EP 4314518 A1 EP4314518 A1 EP 4314518A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- signal
- injection signal
- fuel
- injection
- original
- 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- Withdrawn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
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
- F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
- F02D19/0652—Biofuels, e.g. plant oils
- F02D19/0655—Biofuels, e.g. plant oils at least one fuel being an alcohol, e.g. ethanol
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
- F02D19/066—Retrofit of secondary fuel supply systems; Conversion of engines to operate on multiple fuels
-
- 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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/2003—Output circuits, e.g. for controlling currents in command coils using means for creating a boost voltage, i.e. generation or use of a voltage higher than the battery voltage, e.g. to speed up injector opening
-
- 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
- F02D41/20—Output circuits, e.g. for controlling currents in command coils
- F02D2041/202—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit
- F02D2041/2058—Output circuits, e.g. for controlling currents in command coils characterised by the control of the circuit using information of the actual current value
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
- F02D2400/11—After-sales modification devices designed to be used to modify an engine afterwards
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the invention relates to the field of motor vehicles and more particularly in this field to bioethanol conversion devices for direct or indirect injection engines initially intended to operate with a first fuel, for example an unleaded fuel.
- the conversion devices allow a user to operate the engine with a second fuel of composition different from a composition of the first fuel, the second fuel being for example a fuel of the bioethanol type or a mixture of an unleaded fuel and a BioEthanol type fuel.
- the conversion devices make it possible more precisely to control the opening time of the injectors, insofar as the use of bioethanol requires the injection of additional fuel to obtain performance similar to that obtained with unleaded fuel.
- These conversion devices are designed not to interfere with the usual engine ECU control unit which must be able to operate correctly, whether the Bioethanol conversion device is active or not, whether the engine is running on unleaded fuel or Bioethanol.
- such a conversion device is arranged to receive an injection signal supplied by the engine's ECU control unit and to transmit to the engine injectors an appropriate matched injection signal to inject more fuel into the engine.
- the conversion device takes into account in particular the type of engine and the type of fuel used.
- the injection signal is most often a current control signal, which makes it possible to control the opening of an injector then its maintenance open for a sufficient injection time to supply the engine with the fuel it needs.
- the known conversion devices are generally specific for a given type of engine and at most a manual adjustment of a parameter by a potentiometer is envisaged when installing the conversion device on the vehicle.
- the injection signals are very specific and very different from an engine or from a type of engine to another, both in terms of the wave profile (also called waveform) of the signals, as well as their amplitude and duration.
- wave profile also called waveform
- These are periodic signals, with a frequency proportional to the engine speed (speed of rotation).
- the injection signals can in practice vary enormously in amplitude and duration; they can have a voltage which can reach a few tens to a hundred volts, and a current which can have peaks of between a few amperes and a few tens of amperes and which is zero or almost zero at the end of the injection period.
- a conventional conversion device fixed during its manufacture can only be used for one type of engine and it is necessary to provide as many conversion devices as there are types of engine.
- the engine control unit produces the original injection signals taking into account in real time in particular the power requested from the engine and / or the engine load and possibly the temperature. ambient. This results in original injection signals whose wave profile, amplitude and duration vary in real time with each injection cycle during engine use. Under these conditions, eminently variable, a conventional conversion device may have to modify the original injection signal at an inopportune moment of the injection cycle, at the risk of causing unnecessary overconsumption of fuel, or even damaging engine.
- Patent application PCT/EP2019/085468 describes a conversion device and method, in which, at each injection cycle, an end time of the original injection signal is detected and the complementary injection signal is supplied to the injector after the end time of the injection origin signal. This technical solution improves the instant of injection of the complementary signal so that the injector sees the transition from the original signal to the complementary signal as little as possible.
- the wave profile, the amplitude and the duration of the complementary injection signal are a function of initial parameters obtained by preliminary tests on the engine or on a family of engines, and stored in the conversion device during the installation of the device on the vehicle. This technical solution makes it possible to provide an additional injection signal better suited to a given engine.
- the invention proposes a new device for converting an injection engine initially intended to operate with a first fuel, conversion device allowing a user to operate the engine with a second fuel of different composition from a composition of the first fuel , the second fuel being for example a fuel of the type Bioethanol, a new device that does not have all or part of the disadvantages of known prior conversion devices as described above.
- the invention proposes a new conversion device arranged to supply, from an original injection signal received from an engine control unit, an injection signal adapted to an injector of the engine .
- a circuit for analyzing the original injection signal comprising a circuit for measuring the original injection signal and a detection circuit arranged to detect an end time of the original injection signal when the signal measured decreases and becomes lower than an end threshold
- a signal generator arranged to produce a complementary injection signal from the end time of the original injection signal
- a switching circuit arranged to successively transmit the original injection signal to the injector then supply the injector with the complementary injection signal, the original injection signal and the complementary signal of injection together forming the adapted injection signal.
- the conversion device is characterized in that the analysis circuit also comprises an updating circuit arranged to update a value of the end threshold as a function of the measured signal.
- the device according to the invention thus makes it possible to supply a complementary injection signal at the end of the original injection signal and, by updating the value of the end threshold according to the original injection signal, the device conversion takes into account in real time any variations in the duration of the injection signal throughout the operation of the engine; thus, the detection of the end of the original signal is more precise than in previous devices so that the complementary injection signal is always supplied at the most opportune moment for the engine, including during variations in the operating conditions of the engine.
- the updating circuit is also arranged to determine, in a regulation phase of the original injection signal, a maximum value Vmax and a minimum value Vmin of the measured signal, and arranged to update a value of a high threshold HT and a value of a low threshold LT depending respectively on the maximum value Vmax and the minimum value Vmin of the measured signal, and the signal generator can be arranged to produce the complementary injection signal SC varying between the high threshold HT and low threshold LT. Updating the high and low thresholds in real time makes it possible to adjust the amplitude of the additional injection signal in real time during engine operation.
- the conversion device thus provides, in real time, a complementary signal which has an amplitude as close as possible to the real amplitude of the original injection signal as measured in its regulation phase during operation of the particular engine on which the conversion device is installed; the complementary signal thus extends the original signal in the most transparent way possible for the engine and in the actual engine operating conditions; the efficiency of the conversion device is thus further optimized.
- the updating circuit can be arranged to determine, in the regulation phase of the original injection signal, an updated period P of the measured signal, and the signal generator can be arranged to produce the complementary signal of periodic injection of period P.
- the conversion device thus provides, in real time, a complementary signal which has a wave profile (periodic signal) as close as possible to the real wave profile of the original injection signal such than measured; the efficiency of the conversion device is thus further optimized.
- the invention also relates to a conversion method comprising the use of a conversion device as described above.
- the invention thus proposes a conversion device with self-adaptive thresholds, updated in real time to take into account real engine operating conditions in real time.
- the conversion device thus produces an optimized adapted injection signal, perfectly adapted to the properties of the second fuel, to the engine and to its operation in real time.
- FIG. 1 is a simplified electrical diagram of the device according to the invention in its environment
- FIG. 2 is an electrical diagram detailing the device according to the invention
- FIG. 3 shows an example of evolution of the injection control signal supplied to an injector of an engine, by a known conversion device
- FIG. 4 shows an example of evolution of the injection control signal supplied to an injector of an engine, by a conversion device according to the invention
- FIG. 5 is a schematic representation of the essential steps of a method according to the invention.
- the invention concerns (fig. 1) a conversion device 1 suitable for converting an injection engine to a second fuel of bioethanol type or a mixture of a unleaded fuel and bioethanol type fuel.
- the conversion device is arranged to supply, from an original injection signal SI, received from a control unit ECU of the engine, an injection signal adapted SM to an injector 5 of the engine.
- FIGS 1-2 show a possible embodiment of a conversion device according to the invention, deliberately simplified for the sake of clarity.
- a pair of input wires connects the ECU control unit to positive and negative (or ground) input terminals of the converter device (fig. 1) and a pair of output cables from the positive and negative (or ground) output terminals of the conversion device to the injector 5.
- the conversion device comprises (fig. 2):
- an analysis circuit (60) of the injection origin signal (SI) comprising a measurement circuit (61) of the injection origin signal and a detection circuit (67) arranged to detect a moment of end (Tf) of the original injection signal when the measured signal decreases and becomes lower than an end threshold (FT),
- a signal generator (70) arranged to produce a complementary injection signal (SC) from the end time of the original injection signal
- a switching circuit (80) arranged to successively transmit to the injector the original injection signal (SI) then supply the injector with the complementary injection signal (SC), the injection signal of origin (SI) and the complementary injection signal (SC) together forming the adapted injection signal (SM).
- the measurement circuit 61 is arranged here to measure the instantaneous current flowing between the negative input and output terminals of the conversion device, that is to say in the return connection of the injection signal of the injector 5 to the ECU control unit.
- Circuit 61 provides a measured signal which is an image of the original injection signal SI: an amplitude of the measured signal is proportional to an amplitude of the original injection signal SI, a duration, a period and an instant of end Tf of the measured signal are identical respectively to a duration, a period and an end time of the original injection signal SL
- the measurement circuit 61, the detection circuit (comparator 67), the signal generator 70 and the switching circuit 80 are for example produced according to the teaching of D1.
- Figures 3 and 4 schematically show the evolution over time of the original injection signal SI (solid lines) supplied by the control unit ECU, and the evolution over time of the complementary signal SC (dotted lines) as produced by the signal generator 70, the resulting signal corresponding to the matched injection signal SM as supplied to the injector 5 (a single injection cycle shown).
- Figure 3 shows the SM signal produced by a conversion device in accordance with the teaching of Dl, in a critical situation.
- FIG. 4 similarly shows the evolution of the matched injection signal SM produced by the conversion device according to the invention.
- the injection signals of SI origin are quite different from one engine to another and according to the operating conditions of the engine, both in their wave profiles and in their amplitudes or in their durations.
- all of them have a first phase A corresponding to an injector opening command, followed by a second phase B (commonly called a breakdown phase), corresponding to a command to keep the injector open.
- the current increases starting from a minimum value, conventionally zero Ampere, passes through a maximum value then goes down again.
- the maximum value is of the order of a few Amps to a few tens of Amps, depending on the motor.
- the current is regulated and oscillates between two values, a minimum value and a maximum value, a jet of pressurized fuel being projected into the injector throughout the duration of the second phase B.
- the amplitude of the original signal can vary significantly from one engine to another: the difference between the maximum value and the minimum value of the injection signal of origin (difference commonly called breakdown amplitude) can thus vary from zero (no or very few oscillations) to a few tens of Amperes.
- the end of the original injection signal is detected when the original injection signal decreases and becomes lower than an end threshold FTO (FIG. 3).
- the FTO threshold is predefined, stored in the conversion device at the time of its installation on a vehicle. However, during operation, the original injection signal may change and the FTO threshold may become inappropriate. Thus in the example of FIG. 3, where the value of the end threshold FTO is much lower than the minimum value of the original signal in its regulation phase, the end of the original signal (time TfO) is detected late so that the complementary signal is generated tardily.
- the conversion device considers the end of the original signal (time Tf ) well before the actual end of the original signal, interrupts the transmission of the original injection signal and provides an inappropriate complementary signal, in particular having a duration much shorter than the actual duration of the original signal. In both cases, the signal provided by the conversion device causes the injector to malfunction.
- the analysis circuit 60 comprises an updating circuit 68b arranged to determine the parameters of the signal measured by the measuring circuit 61, and to update in real time the parameters necessary for the production of the complementary injection signal.
- the analysis circuit comprises a memory 68a for storing the measured signal, and the updating circuit 68b determines parameters of the measured and stored signal.
- the updating circuit 68b determines parameters of the measured signal on the fly, as the measurement is carried out by the circuit 61.
- the updating circuit 68b can also be arranged to determine, in a regulation phase of the original injection signal, a maximum value Vmax and a minimum value Vmin of the measured signal, and arranged to update a value of a threshold high HT and a value of a low threshold LT depending respectively on the maximum value Vmax and the minimum value Vmin of the measured signal, and the signal generator 70 can be arranged to produce the complementary injection signal SC varying between the high threshold HT and low threshold LT.
- the circuit 68b can be arranged to update the value of the high threshold HT to a ceiling value HTM if it determines a maximum value Vmax greater than a maximum acceptable value.
- the circuit 68b can be arranged to update the value of the low threshold LT to a floor value LTm if it determines a minimum value Vmin lower than a maximum acceptable value. This makes it possible to secure the circuits located downstream of the updating circuit 68b, in the event of a malfunction of the updating circuit 68b or of circuits located upstream of the updating circuit (for example the measurement circuit 61).
- the updating circuit 68b can also be arranged to determine, in the regulation phase of the original injection signal, an updated period P of the measured signal, and the signal generator 70 can be arranged to produce the complementary signal SC periodic injection of period P.
- the complementary signal SC produced by the generator 70 has the same wave profile (periodic signal) as the original injection signal.
- the updating circuit 68b is first of all arranged to update a value of the end threshold FT as a function of the signal measured by the measuring circuit 61.
- E is a predefined tolerance parameter.
- a chosen E tolerance parameter of less than 5% gives correct operation of the injector, and that a chosen E parameter of less than or equal to 3% leads to optimal operation of both the injector and of the conversion device.
- an injection signal of origin SI whose wave profile is similar to that shown in Figure 4.
- the switching circuit 80 supplies the complementary injection signal produced by the generator 70 after having transmitted the original injection signal.
- the complementary signal and the original signal are offset by a transition period PT greater than the period P of the original signal.
- the signal generator 70 is preferably arranged to produce the complementary periodic injection signal SC of period P so that the transition period PT (FIG. 4) between the original injection signal SI and the complementary injection signal SC is less than 1.2 times, and preferably less than 1.1 times, the period P.
- the complementary signal is thus as transparent as possible for the injector.
- the conversion device also comprises a probe (not shown) arranged to measure a richness R of the second fuel and the signal generator 70 is arranged to produce the complementary injection signal whose a duration is a function of the richness of the second fuel and of the duration of the original injection signal.
- TX is a rate depending on the richness of the second fuel. It can also depend on intrinsic parameters of the engine, intrinsic parameters of the vehicle (e.g. weight, etc.) in which the engine is installed or even on the use made of the engine (e.g. traffic most often in town or highway).
- the TX enrichment rate can be updated by a measurement of the richness R of the second fuel carried out by the richness probe carried out during the first injection cycle when the engine is started, or even more regularly at each injection cycle throughout the operation of the engine.
- DI is the duration of the original signal.
- the duration of the original signal is determined between the start time and the end time of the original signal, that is to say between the start of phase A and the end of phase B of the original signal.
- the duration of the original signal is considered between the start and the end of the regulation phase of the signal SI: a comparator 63a is arranged to detect the start of the regulation phase when the measured signal decreases and becomes lower than the high threshold HT, the comparator 67 detects the end of the regulation phase and a measurement circuit 63c determines the injection duration DI corresponding to the duration between the start and the end of the phase regulation of the SI signal.
- FIG. 1 For the sake of simplification, a single injector of an engine has been represented in FIG. 1.
- the diagram of FIG. 1 can be duplicated N times: the device for conversion according to the invention then comprises N pairs of input terminals, each connected to corresponding pairs of terminals of the control unit ECU, and N pairs of output terminals, each connected to a pair of terminals of an injector ; inside the conversion device, the analysis circuit, the current generator and the switching circuit can be duplicated in the same way, which allows each injector to be controlled independently of the others.
- the device according to the invention may comprise N current generators and N switching circuits, a current generator and a switching circuit being associated with the power supply of one of the N injectors of the engine, and a single analysis circuit 60 for analyzing the original injection signal associated with one of the N injectors and supplying analysis results (high threshold, low threshold, etc.) to each of the N current generators.
- the analysis circuit 60 may further comprise a communication interface 66, arranged to exchange information with a remote terminal (displaying for example a graphical interface for a user) by known means such as for example a wired connection (e.g. via a USB cable) or a wireless link (e.g. a Bluetooth link).
- a remote terminal displaying for example a graphical interface for a user
- a wireless link e.g. a Bluetooth link
- the analysis circuit 60 can include a control circuit 65:
- a user such as an identifier of the engine, the tolerance parameter E, initial values of the high threshold HT, of the low threshold LT, of the end threshold FT, of the richness R and of the enrichment rate TX, the minimum value of the low threshold and the maximum value of the high threshold HT, the tolerance parameter E, the minimum value and the maximum value of the TX enrichment rate, etc.
- parameters possibly provided by a user such as an identifier of the engine, the tolerance parameter E, initial values of the high threshold HT, of the low threshold LT, of the end threshold FT, of the richness R and of the enrichment rate TX, the minimum value of the low threshold and the maximum value of the high threshold HT, the tolerance parameter E, the minimum value and the maximum value of the TX enrichment rate, etc.
- the control circuit 65 notably comprises a data memory, for memorizing the predefined parameters such as the tolerance parameter, the enrichment rate, etc.
- the data memory can also store a database containing, for each motor (or type of motor) known and identified by an identifier, initial parameters associated with said motor such as initial values of the high threshold HT, of the low threshold LT , and of the end threshold FT, the minimum value of the low threshold and the maximum value of the high threshold HT, the tolerance parameter E, the minimum value and the maximum value of the enrichment level TX, , etc.
- the data memory can also store the updated values of the high HT and low LT thresholds and/or of the duration DCI of the complementary signal supplied by the updating circuit 68b for the production of the complementary signal d 'injection.
- the control circuit 65 also comprises a program memory comprising a plurality of lines of code suitable for the implementation of the method according to the invention and the control of all the circuits of the conversion device, as described below. .
- the conversion device according to the invention can be used to implement a conversion method according to the invention, consisting in (fig. 5):
- step ET3 successively, transmit to the injector the original injection signal SI then supply the injector with the complementary injection signal SC, the original injection signal SI and the complementary injection signal SC together forming the adapted injection signal SM, method characterized in that it also comprises a step ET4 consisting of:
- Steps ET1 analysis of the original injection signal SI
- ET2 production of the complementary signal SC
- step ET3 supply of the signal SI then of the signal SC
- step ET4 update of the end threshold
- step ET1 can also comprise the storage of the measured signal.
- Steps ET1 to ET3 are repeated at each injection cycle, that is to say at each cycle of the original injection signal, preferably for the entire operating time of the engine.
- step ET4 can be performed during a first cycle of the original injection signal; this makes it possible to update at least the end threshold of the original injection signal at the time of starting of the motor ; and or
- Step ET4 can be repeated at each cycle of the original injection signal; this makes it possible to update in real time at least the end threshold of the signal SI during the operation of the motor.
- a maximum value Vmax and a minimum value Vmin of the measured signal are determined and a value of a high threshold HT and a value of a low threshold LT are updated according respectively to the maximum value Vmax and the minimum value Vmin of the measured signal and, during step ET2, the complementary injection signal is produced varying between the high threshold ( HT) and the low threshold (LT).
- step ET4 in a phase of regulation of the original injection signal, an updated period of the measured signal is determined and, during step ET2, the complementary injection signal (SC) is periodic product of period P.
- the method may also comprise a parameterization step ET01, consisting in selecting at least one parameter from a set of parameters comprising: a parameter identifying the engine, a parameter identifying the type of engine, a parameter identifying a fuel, a parameter identifying a type fuel, the tolerance parameter, an initial value of the high threshold HT, an initial value of the low threshold LT, an initial value of the end threshold FT, an initial value of the enrichment level TX.
- a parameterization step ET01 consisting in selecting at least one parameter from a set of parameters comprising: a parameter identifying the engine, a parameter identifying the type of engine, a parameter identifying a fuel, a parameter identifying a type fuel, the tolerance parameter, an initial value of the high threshold HT, an initial value of the low threshold LT, an initial value of the end threshold FT, an initial value of the enrichment level TX.
- the initial values of the high threshold HT, of the low threshold LT, of the end threshold FT and/or of the enrichment rate TX are used for the first performance of the steps ET1 to ET3; in parallel, the values of the high threshold HT, of the low threshold LT, of the end threshold FT and/or of the enrichment rate TX are determined and updated during step ET4 by the updating circuit 68b (acquisition) .
- the updated values s of the high threshold HT, of the low threshold LT, of the end threshold FT and/or of the enrichment rate TX are then available for the following injection cycles, and updated regularly by the updating circuit.
- the parameter setting step ET01 can be carried out by a user, for example using a user interface (also called man/machine interface or H/M interface) allowing the user to enter parameters or values initials of parameters necessary for the operation of the conversion device. These initial parameters are then used to calibrate the measurement circuits, to configure the threshold determination circuit, the control circuit, etc. List of reference signs
- 68 circuit comprising a memory 68a and an update circuit 68b
- A, B first phase and second phase of an original injection signal
- Vmax Vmin maximum value, minimum value of the measured signal
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Computer Hardware Design (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Biotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- External Artificial Organs (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2103387A FR3121479B1 (fr) | 2021-04-01 | 2021-04-01 | Amélioration d'un dispositif de conversion au Bioéthanol agencé pour produire un signal d'injection adapté |
| PCT/IB2022/052637 WO2022208236A1 (fr) | 2021-04-01 | 2022-03-23 | Amélioration d'un dispositif de conversion au bioéthanol agencé pour produire un signal d'injection adapte |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4314518A1 true EP4314518A1 (fr) | 2024-02-07 |
Family
ID=77710790
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22712656.2A Withdrawn EP4314518A1 (fr) | 2021-04-01 | 2022-03-23 | Amélioration d'un dispositif de conversion au bioéthanol agencé pour produire un signal d'injection adapte |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US12247523B2 (fr) |
| EP (1) | EP4314518A1 (fr) |
| JP (1) | JP2024514513A (fr) |
| KR (1) | KR20240021755A (fr) |
| CN (1) | CN117616190A (fr) |
| AU (1) | AU2022249972A1 (fr) |
| CA (1) | CA3214145A1 (fr) |
| FR (1) | FR3121479B1 (fr) |
| WO (1) | WO2022208236A1 (fr) |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5092305A (en) * | 1990-11-26 | 1992-03-03 | Gas Research Institute | Apparatus and method for providing an alternative fuel system for engines |
| WO2004029438A1 (fr) * | 2002-09-24 | 2004-04-08 | Engine Control Technology, Llc | Procedes et dispositif pour exploiter des moteurs multicarburant |
| US7607422B2 (en) * | 2005-04-25 | 2009-10-27 | Grant B Carlson | Methods of flexible fuel engine conversions |
| US7305939B2 (en) * | 2005-04-25 | 2007-12-11 | Grant B. Carlson | Addition of flexible fuel engine control system |
| US7527040B2 (en) * | 2005-12-21 | 2009-05-05 | Boondocker Llc | Fuel injection performance enhancing controller |
| US8136486B2 (en) * | 2007-10-31 | 2012-03-20 | Von Beck Paul Gerhard | Motorized vehicles spark timing control for use with biofuel gasoline mixture |
| US9567918B2 (en) * | 2010-05-10 | 2017-02-14 | Go Natural Cng, Llc | Bi-fuel control systems for automotive vehicles and related methods |
| US8996279B2 (en) * | 2010-08-20 | 2015-03-31 | Michael V. Dobeck | Method and system for optimizing fuel delivery to a fuel injected engine operating in power mode |
| GB2488814A (en) * | 2011-03-09 | 2012-09-12 | Mobilizer Ltd | Engine Performance Modification or Tuning Kit |
| US9458761B2 (en) * | 2011-09-07 | 2016-10-04 | Afton Chemical Corporation | Airborne engine additive delivery system |
| US20150198109A1 (en) * | 2014-01-15 | 2015-07-16 | Ryan Christopher Truax | Alternative fuel module for spark ignition fuel injected engines |
| US10519906B2 (en) * | 2015-01-15 | 2019-12-31 | ADVANCED FUEL DYNAMICS, Inc. | Native fuel module for spark ignition fuel injected engines |
| FR3045729B1 (fr) * | 2015-12-18 | 2018-10-05 | Biomotors | Biomotors gdi |
| US20190085776A1 (en) * | 2017-08-29 | 2019-03-21 | American Gas & Technology | Diesel to natural gas conversion system |
| FR3090044B1 (fr) * | 2018-12-15 | 2025-11-07 | Flex Fuel Energy Dev Ffed | dispositif de conversion au Bioéthanol agencé pour produire un signal d'injection modifié |
| EP4051894A4 (fr) * | 2019-10-29 | 2023-12-06 | Innovative Fuel Systems Ltd. | Moteur à carburants mixtes |
| US11053871B1 (en) * | 2020-12-15 | 2021-07-06 | ADVANCED FUEL DYNAMICS, Inc. | Adaptive engine control module |
-
2021
- 2021-04-01 FR FR2103387A patent/FR3121479B1/fr active Active
-
2022
- 2022-03-23 KR KR1020237037696A patent/KR20240021755A/ko active Pending
- 2022-03-23 CN CN202280037448.3A patent/CN117616190A/zh active Pending
- 2022-03-23 US US18/553,254 patent/US12247523B2/en active Active
- 2022-03-23 EP EP22712656.2A patent/EP4314518A1/fr not_active Withdrawn
- 2022-03-23 JP JP2023560674A patent/JP2024514513A/ja active Pending
- 2022-03-23 AU AU2022249972A patent/AU2022249972A1/en not_active Abandoned
- 2022-03-23 WO PCT/IB2022/052637 patent/WO2022208236A1/fr not_active Ceased
- 2022-03-23 CA CA3214145A patent/CA3214145A1/fr active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| AU2022249972A1 (en) | 2023-10-19 |
| US20240183320A1 (en) | 2024-06-06 |
| CA3214145A1 (fr) | 2022-10-06 |
| CN117616190A (zh) | 2024-02-27 |
| FR3121479B1 (fr) | 2024-01-19 |
| FR3121479A1 (fr) | 2022-10-07 |
| JP2024514513A (ja) | 2024-04-02 |
| US12247523B2 (en) | 2025-03-11 |
| WO2022208236A1 (fr) | 2022-10-06 |
| KR20240021755A (ko) | 2024-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| FR2864724A1 (fr) | Dispositif de commande destine a un dispositif de generateur electrique de vehicule a moteur | |
| EP2684289A2 (fr) | Procede de commande mis en oeuvre dans un convertisseur de puissance pour identifier des parametres lies a la saturation magnetique d'un moteur electrique | |
| EP2311182B1 (fr) | Procede pour commander une machine electrique tournante, notamment un alternateur | |
| CN107849996A (zh) | 用于获取由内燃机的皮带传动的起动发电机传递到内燃机上的转矩的转矩精度的方法 | |
| FR2979041A1 (fr) | Procede pour eviter les surtensions d'un reseau embarque d'un vehicule automobile | |
| EP2115295A1 (fr) | Procede et systeme de demarrage du moteur thermique d ' un vehicule automobile hybride | |
| WO2022208236A1 (fr) | Amélioration d'un dispositif de conversion au bioéthanol agencé pour produire un signal d'injection adapte | |
| WO2011131888A2 (fr) | Procede de commande de regulation d'un alternateur de vehicule automobile, et dispositifs correspondants | |
| EP2173999B1 (fr) | Dispositif de generation de plasma radiofrequence | |
| EP3894680A1 (fr) | Dispositif de conversion au bioéthanol agencé pour produire un signal d'injection modifié | |
| EP2123889A1 (fr) | Procédé de commande pour moteur à injection et dispositif pour mettre en oeuvre ledit procédé | |
| EP1597468B1 (fr) | Procede de determination du gain d'un injecteur de carburant | |
| EP2651007A2 (fr) | Système d'alimentation électrique | |
| FR2928418A1 (fr) | Dispositif et procede de commande de la reserve d'air dans des moteurs a combustion interne pilotes en fonction de la vitesse de rotation | |
| CN110979223B (zh) | 一种发电机噪声控制方法和装置 | |
| HK40106149A (zh) | 对被布置成产生修正的喷射信号的用於转换为生物乙醇的装置的改进 | |
| WO2019106252A1 (fr) | Moteur à réglage prédictif, contrôleur de moteur et procédé de réglage automatique de moteur | |
| WO2025209860A1 (fr) | Procédé de contrôle d'un moteur électrique synchrone à rotor bobiné | |
| FR2881003A1 (fr) | Methode de pilotage d'un alternateur de vehicule automobile avec optimisation continue de la consommation de carburant | |
| EP4450318A1 (fr) | Procédé d'ajustement du fonctionnement d'un système d' alimentation électrique de véhicules ferroviaires, produit programme d'ordinateur, dispositif électronique d'ajustement et système d'alimentation électrique associés | |
| FR3111951A1 (fr) | Contrôleur moteur adapté pour identifier une sonde de richesse inadaptée et procédé associé | |
| FR2695881A1 (fr) | Procédé d'installation de commande d'une installation de réglage d'un véhicule. | |
| FR3111950A1 (fr) | Contrôleur moteur adapté pour identifier une sonde de richesse inadaptée et procédé associé | |
| FR2867230A1 (fr) | Procede de controle d'un moteur a combustion interne | |
| FR2856433A1 (fr) | Procede de gestion d'un moteur a combustion interne |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
| 17P | Request for examination filed |
Effective date: 20231003 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
| DAV | Request for validation of the european patent (deleted) | ||
| DAX | Request for extension of the european patent (deleted) | ||
| GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
| RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: FLEX FUEL - ENERGY DEVELOPMENT (FFED) |
|
| INTG | Intention to grant announced |
Effective date: 20241125 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 20250326 |