EP3645861A2 - Verarbeitungseinheit zur überwachung eines starters für einen verbrennungsmotor - Google Patents
Verarbeitungseinheit zur überwachung eines starters für einen verbrennungsmotorInfo
- Publication number
- EP3645861A2 EP3645861A2 EP18731807.6A EP18731807A EP3645861A2 EP 3645861 A2 EP3645861 A2 EP 3645861A2 EP 18731807 A EP18731807 A EP 18731807A EP 3645861 A2 EP3645861 A2 EP 3645861A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- starter
- speed
- voltage
- combustion engine
- internal combustion
- 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
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- 238000000034 method Methods 0.000 claims abstract description 108
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/10—Safety devices
- F02N11/108—Safety devices for diagnosis of the starter or its components
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/10—Safety devices
- F02N11/101—Safety devices for preventing engine starter actuation or engagement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits specially adapted for starting of engines
- F02N11/0848—Circuits specially adapted for starting of engines with means for detecting successful engine start, e.g. to stop starter actuation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
- F02N2200/022—Engine speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/042—Starter torque
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/043—Starter voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/044—Starter current
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/045—Starter temperature or parameters related to it
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/04—Parameters used for control of starting apparatus said parameters being related to the starter motor
- F02N2200/046—Energy or power necessary for starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/14—Parameters used for control of starting apparatus said parameter being related to wear of starter or other components, e.g. based on total number of starts or age
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2006—Control related aspects of engine starting characterised by the control method using prediction of future conditions
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2008—Control related aspects of engine starting characterised by the control method using a model
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2300/00—Control related aspects of engine starting
- F02N2300/20—Control related aspects of engine starting characterised by the control method
- F02N2300/2011—Control involving a delay; Control involving a waiting period before engine stop or engine start
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Definitions
- the invention relates to a processing unit and a corresponding
- Method for monitoring a starter for an internal combustion engine in particular for an internal combustion engine of a vehicle.
- a vehicle having an internal combustion engine typically includes a starter that is used to crank the engine to perform at least one intake and compression stroke and allow the engine to start.
- the starter typically comprises an electric motor, in particular a DC motor, which is operated with electrical energy from an electrical system (in particular a low-voltage electrical system with a vehicle electrical system voltage of 60V or less, typically 12V or 48V) of the vehicle.
- the driver of a vehicle can actuate an ignition of the vehicle (for example via a start button of the vehicle).
- the starter is caused to drive the crankshaft of the internal combustion engine to accelerate the internal combustion engine to the starting engine speed to allow the internal combustion engine to start.
- independent claim dependent claim without the features of the independent claim or only in combination with a Tei lmenge of the features of the independent claim can form an independent and independent of the combination of all features of the independent claim invention, the subject of an independent claim, a Te i I or a subsequent application can be made. This applies equally to technical teachings described in the specification, which may form an independent invention of the features of the independent claims.
- a processing unit for monitoring an electrically powered starter is described.
- the product may have one or more characteristics of another processing described in this document.
- the starter is set up, one
- the starter comprises e.g. an electric motor, in particular a
- the electric power can be supplied to generate a torque for driving the Kurbelwel le of the internal combustion engine.
- a user can initiate via a user interface (eg via an ignition lock or via a start button) that electrical power is supplied to the starter from a vehicle electrical system, in particular from the electrical system of a vehicle.
- the internal combustion engine (in particular the crankshaft of the internal combustion engine) is then driven by the starter. After a certain period of time, the speed of the internal combustion engine can be sufficiently high for a start of the internal combustion engine his.
- the internal combustion engine typically only follows the combustion process of the engine after a successful starting process
- the processing unit can be set up. To determine information regarding a cause of an unsuccessful boot.
- the processing unit is configured to determine power information related to electric power supplied to the starter during a starting operation of the internal combustion engine.
- the electrical power typically depends on the starter voltage. which is applied to the starter and / or by the starter current that flows into the starter. In particular, the electrical power results from the product of the starter voltage and the starter current.
- the power information may indicate the starter voltage during startup, especially at the beginning of the startup process. Due to the starter voltage applied to the starter voltage, a certain torque /
- the value of the starter voltage can be used as a voltage measuring unit.
- the processing unit may be further configured.
- the speed information can indicate the speed, in particular the ma imale speed, of the internal combustion engine during the starting process.
- the speed can be exceeded by a timer
- Internal combustion engine can be determined.
- diagnosis is based on the performance information and on the basis of the rotational speed 1 - 1 n form a diagnosis of the
- the starting process can be successful (if the engine was started) or unsuccessful (if the internal combustion engine has not been started) run.
- Processing unit may be configured to determine one or more indications of the cause of an unsuccessful boot process.
- the power information in particular the starter voltage
- the speed information in particular the speed
- a reliable and precise analysis of the state of a starter, an internal combustion engine and / or a vehicle electrical system with respect to a starting operation can be determined become.
- the vehicle operation can be configured to determine at least one map point in a map of the starter on the basis of the power information and on the basis of the rotational speed information.
- the map may indicate a relationship between the electrical power of the starter and the expected speed of the engine.
- the Ken nfeld can indicate a relationship between the torque or the starter current of the starter and the speed of the engine or the starter.
- the Ken field of the starter may have been previously detected by measurements and stored in a memory unit (e.g., a memory unit of a vehicle).
- the map of a starter typically depends on the internal combustion engine. which the starter drives.
- the map may include a plurality of characteristics for a plurality of different types of panes (i.e., different voltage values of the starter voltage). It can be a Kennie ie
- a characteristic curve can thus be selected from the plurality of characteristic curves. From the Di e h zah I - 1 n form at i o n (in particular the speed of the
- Combustion engine at the start process then results in a point on the selected characteristic.
- This point can be the map point of the
- the diagnosis of the starting process and / or the starter can then be carried out on the basis of the position of the map point within the map. This enables a particularly efficient and precise diagnosis.
- the Ken nfeld the starter may include a plurality of different areas or may be divided into a plurality of different areas.
- the different areas can each be about
- Torque and / or current ranges or starter voltage ranges extend.
- Performing the diagnosis may include determining in which region of the map the map point of the launch event falls. The determined area may then display information relating to the startup process.
- the Ken nfeld the starter the relationship between the torque or the starter current on the one hand and the speed of the engine on the other hand.
- the map can be crossed by the plurality of Kennl inia for the plurality of different starter voltages.
- the ranges can be limited on the one hand by one or more transverse characteristics and on the other hand by one or more parallel to the torque / starter current axis extending straight line for a constant speed.
- the areas can thus be at least partially trapezoidal.
- the characteristics may also have other characteristics (e.g., convexity) so that arbitrarily shaped regions may result.
- a first tarter span, gs value may be such that the tarter span is now below the first species span Indication of insufficient electric power for the starter during a starting process. With a starting voltage below the first starter voltage value, therefore, typically no successful starting operation can be effected.
- a second starter voltage value may be such that starter voltages above the second starter voltage value are an indication of ei ne
- a power interruption voltage value may be defined, wherein the power interruption voltage value is such that starter voltages below the voltage start point are an indication of power interruption of the electrical power to the starter.
- a starter voltage below the power cut voltage value may thus indicate a problem with the power supply of the starter.
- the first starting voltage is lower than the second starting value, and greater than the maximum starting voltage.
- a minimum speed threshold value can be defined such that speeds below the minimum speed threshold value are an indication of a power interruption of the starter.
- a first speed threshold value can be set such that speeds below the first speed value represent an indication of a blockage of the starter.
- a second speed threshold may be defined such that speeds above the second speed threshold typically result in a start of the engine.
- the second speed threshold may be a minimum speed for a successful start of the engine.
- the first speed threshold is typically greater than the minimum speed 1 - threshold! value and less than the second speed threshold.
- the number of areas may e.g. a first range for a starter voltage between the first trim voltage and the second starter voltage value and for a speed between the first speed threshold and the second speed threshold.
- the first range can thus be limited by the characteristic curve for the first starter voltage value and by the characteristic value for the second type of engine voltage.
- the first range can be defined by the straight line for the constant first rotational speed 1 and the straight line for the constant second rotational speed
- Speed threshold may be limited.
- the first range may indicate that the starter has experienced too high a counter-torque during the starting process, or that the starter has not been able to apply a required torque during the starting process.
- the plurality of regions may include a second range for a starter voltage below the first engine speed and for a speed between the first speed threshold and the second speed threshold.
- the second area may indicate that the s tarte r voltage was not sufficient for the startup process.
- the plurality of regions may include a third region for a starter voltage above the power interrupt voltage value and for a speed below the first speed shift value.
- the third area may indicate that the starter was blocked during the startup process.
- the plurality of regions may include a fourth region for a starter voltage below the first starter voltage value and for a rotational speed above the second rotational zh I threshold value. The fourth area may indicate that a future startup operation is at risk due to insufficient starter electrical power.
- the plurality of regions may include a fifth region for a starter voltage above the second starter voltage value.
- the fifth range may indicate that the starter voltage is too high and could affect and / or damage the starter.
- the plurality of regions may include a sixth range for a starter voltage between the first carrier value and the second starter voltage value and for a speed above the second speed threshold.
- the sixth area may indicate that the starter, the internal combustion engine and / or the electrical system for electrical
- the plurality of regions may include a seventh range for a starter voltage below the power cut voltage value and for a speed below the minimum speed spark value.
- the seventh area may indicate that during the boot process a
- the processing at this point may thus be arranged to determine, based on the power information, whether the starting voltage during the starting process was above or below the power interruption voltage value. and / or whether the starter Voltage in the starting process was above or below the first starter voltage value and / or whether the starter voltage at the start process was above or below the second starter voltage value.
- the processing unit may be configured to determine on the basis of the rotational speed information whether the rotational speed of the racing engine was above or below the minimum rotational speed threshold during the starting process. and / or whether the speed of the verb re engine during the starting process was above or below the first speed threshold. and / or whether the speed of the internal combustion engine during the starting process was above or below the second speed threshold.
- the diagnosis of a start process can thus be done efficiently by comparison operations.
- an output may be made with respect to the diagnosis (e.g., in a vehicle's fault reader and / or via a user interface of a vehicle).
- the output can indicate the area where the map point of a startup is located.
- a monitor is described in detail for monitoring an electrically operated starter, which is set up to drive an internal combustion engine during a starting operation.
- Processing unit may include one or more features of another processing unit described in this document.
- the video unit is set up. Determining power information related to electric power supplied to the starter during a starting operation of the internal combustion engine.
- the power unit can display the amount of energy that was supplied to the starter during a startup.
- the processing unit is set up on the basis of a thermal model of the starter A bk h h 1 - 1 n I rma tion with respect to thermal Determine performance, which is discharged by the starter between the startup and a subsequent startup.
- the processing in it can then be done on the basis of the performance information for a sequence of starts and on the basis of the A bk h h 1 - 1 n form ation for the sequence of starts.
- Determine energy information relating to an amount of energy accumulated in the starter at a particular time.
- the calibration unit can then initiate a measure to protect the starter depending on the energy information or on the cumulative amount of energy. In particular, it can be determined whether the cumulative amount of energy at the specific time is greater or less than a threshold value. It can then when reaching or exceeding one or more
- one or more different measures can be initiated. For example, when reaching or
- a warning of an imminent overload of the starter as a measure is effected.
- a second (higher) energy threshold value is reached or exceeded as a protective measure, another starting procedure can be prevented (for example, until the cumulative amount of energy falls below a specified energy threshold). It can thus be enabled safe operation of a starter.
- the cumulative amount of energy one can assume a (mean) positive amount of energy which is supplied to the starter during operation of the starter per unit of time.
- a (mean) negative amount of energy per unit time which is taken from the starter when not in operation.
- the energy information can be directly based on the Time to be determined, the starter was in operation. and based on the time that the launch was not in service. It is thus possible a particularly efficient monitoring of the starter.
- a control unit is described for monitoring an electrically-powered starter configured to drive an internal combustion engine during a startup operation.
- Processing beauty may include one or more features of your other processing unit described in this document.
- the start time may indicate the duration of a startup (until a successful start of the startup time)
- the rest period may indicate the time period between two consecutive (successful or unsuccessful) start ups.
- the processing may further be arranged to perform a statistical analysis of the plurality of start durations and / or the plurality of rest durations. In particular, a statistical distribution of the start time durations and / or the rest durations can be determined. Furthermore, a mean start time duration and / or an average rest time duration can be determined.
- a measure with respect to the starter causes For example, in the event of too high a mean start time period (which is above a start time duration threshold value), an indication can be output that the starter or the entire battery is running
- Starting system of starter, internal combustion engine and electrical system should be maintained (to eliminate an impairment and to shorten the start time). Furthermore, if too short a mean resting time period (which is below a resting time duration threshold), an indication may be issued that the starter should be replaced early (since the starter load is extremely high).
- a road vehicle in particular a passenger car or a truck or a bus or a motorcycle
- a processing unit described in this document.
- SW software program
- the SW program may be set up to be executed on a processor (e.g., on a controller of a vehicle) and to execute one of the methods described in this document.
- a storage medium is described.
- Storage medium may include an SW program that is set up to be executed on a processor and thereby execute one of the methods described in this document. It should be noted that the procedures described in this document.
- Devices and systems both alone and in combination with other methods described in this document.
- Devices and systems can be used.
- any aspects of the procedures described in this document may be used.
- Devices and systems are combined in a variety of ways.
- the features of the claims can be combined in a variety of ways.
- the invention will be described in more detail with reference to exemplary embodiments. Show
- FIG. 1 shows an exemplary electrical system of a vehicle with a starter for an internal combustion engine.
- FIG. 2 shows exemplary characteristics of a starter
- Fig. 3 is an exemplary energy history of a starter in a sequence of start attempts
- FIG. 4a shows an exemplary statistical distribution of the start durations of a starter
- FIG. 4b shows an exemplary statistical distribution of the rest durations of a starter between directly successive start attempts.
- FIG. 5 shows a flow chart of an exemplary method for checking a starter.
- FIG. 1 shows
- the electrical system 100 typically has a nominal voltage of 12V - 14V. and is therefore often referred to as a 12V or 14V electrical system.
- the on-board network 100 may be e.g. have a vehicle electrical system voltage of 48V.
- the vehicle electrical system 100 includes one or more electrical consumers 10 (eg an infotainment system, an air conditioning system, etc.). which are supplied with electrical energy from the electrical system 100.
- the electrical system 100 may include one or more energy storage 106, 1 07 for storing electrical energy.
- the vehicle electrical system 100 includes a lead-acid battery 106 that can be used to support the vehicle electrical system voltage and provide electrical energy for a starter 105 of a Verbre n Vietnamesesmo sector 103 of the vehicle.
- the starter 105 can be operated in order to mechanically drive the internal combustion engine 103 during a starting operation (the mechanical connection used for this purpose to the crankshaft of the internal combustion engine 103 is not shown in FIG. 1).
- the electrical system 100 also includes a generator 104, via the
- Internal combustion engine 103 is driven to convert kinetic energy into electrical energy, which electrical energy may be used to operate the one or more consumers 108 and / or into the
- Energy storage 106, 107 can be stored. In overrun phases (e.g., downhill) in which the generator 104 indirectly over the
- the on-board network 100 further comprises a control unit 101 (also referred to herein as processing in this document), which is set up to control one or more of the components of the vehicle electrical system 100.
- the control unit 101 may be configured to drive the starter 105 in response to a start signal 1 1 3 (generated, for example, by ignition)
- the starter voltage 1 12 at the starter 105, the starter current 1 1 1 in the starter 105 and / or the speed of the starter 1 05 can be detected by one or more suitable measuring units (eg, each as time course over the duration of the startup process).
- suitable measuring units eg, each as time course over the duration of the startup process.
- a starter 1 05 can be overloaded during repeated unsuccessful attempts to start or start operations and thereby damaged.
- An overload of the starter can be detected, for example, by a temperature monitoring by means of a dedicated temperature sensor and possibly avoided. However, this is associated with an increased effort.
- a temperature sensor for monitoring the starter temperature can be saved.
- Fig. 2 shows exemplary relationships 230 between the torque M and the current I 111 of a starter 105 and the speed n 210 of the starter 105 for different voltages 1 1 2 at the starter 105.
- Each of the lines sloping to the right represents the torque / current speed relationship 230 for a particular starter voltage 1 1 2 (ie for a certain vehicle electrical system voltage).
- the torque or the current 111 drops with increasing speed 210.
- Relationships 230 are used in this document as identifiers for
- the voltage 1 12 at the starter 105 can be detected. From the value of the voltage 112 results in a
- Torque / Current - Speed Kennlin ie 230 Furthermore, the speed 2 1 0 can be determined, which could be achieved during the starting process.
- a map point in the map 200 shown in FIG. 2 can be determined. From the location of the map point in the map 200, information regarding the cause of a possible false start can be obtained.
- different regions 24147 have been defined:
- a first range 241 lies between the torque / current speed characteristic curve 230 for a first starter span value 22 1 and the
- Characteristic curve 230 for a second starter voltage value 222 is between a first speed threshold value 2 1 1 and a second speed threshold value 212.
- the second speed limit value 2 12 correspond to the speed at which typically a start of the engine 103 takes place.
- a second area 242 is below the torque / current
- the second range 242 is between the first speed threshold 2 1 1 and the second speed threshold 2 12.
- a third range 253 is at speeds 2 10 below the first speed threshold value 2 1 1.
- a fourth area 244 is below the torque / current
- the second region 242 is at speeds above the second speed threshold 2 12.
- a sixth area 246 is between the torque / current
- a seventh range 247 is near zero at a starter voltage 112 and near zero at a speed of 2 10.
- different information concerning the start process can be determined:
- First range 241 The starter voltage 1 1 2 was sufficient for a starting process and yet the required speed 2 1 0 could not be achieved for a successful starting process. This may be because the starter 105 has been exposed to a too large counter-torque or that the starter 105 due to a defect the required
- Second area 242 The starter voltage 1 12 was not high enough for a successful startup. There is thus a defect or a shortage of the on-board network 100.
- the speed 2 10 was below the first speed threshold 2 1 1 (which may be, for example, 20% or less of the second speed threshold 2 12) and was thus particularly low. although possibly the starter voltage 1 12 was sufficiently high. The starter 1 05 was thus blocked (for example, by a blockade of the first speed threshold 2 1 1 (which may be, for example, 20% or less of the second speed threshold 2 12) and was thus particularly low. although possibly the starter voltage 1 12 was sufficiently high. The starter 1 05 was thus blocked (for example, by a blockade of the first speed threshold 2 1 1 (which may be, for example, 20% or less of the second speed threshold 2 12) and was thus particularly low. although possibly the starter voltage 1 12 was sufficiently high. The starter 1 05 was thus blocked (for example, by a blockade of the first speed threshold 2 1 1 1 (which may be, for example, 20% or less of the second speed threshold 2 12) and was thus particularly low. although possibly the starter voltage 1 12 was sufficiently high. The starter 1 05 was thus blocked (for example, by a blockade
- the starter voltage 112 is so small that a power interruption in the power supply to the starter 105 can be assumed.
- analyzing the location of a map point for a .Startvorgang in a map 200 of the starter 105 can thus in an efficient and precise manner state information about the state of the starting system, ie the starter 1 05.
- Map 200 to analyze.
- a .Schutzfunktion can be provided to prevent the overloading of a starter 1 05.
- an efficient and reliable method is provided to analyze the failure cause of an unsuccessful startup process.
- Motor electronics of a vehicle are provided to prevent the damage or destruction of the starter 1 05. Furthermore, diagnostics during a start-up procedure may facilitate troubleshooting and prevent the unauthorized replacement of a starter 105.
- the analysis of engine starts during operation of a vehicle can be improved. eg in relation to the number of starts. in terms of the time behavior of
- a map 200 of the starter 1 05 can be divided into different areas, with a second (maximum permissible S tarter Span n n gs value 222 (to avoid a
- a first (minimum allowable) starting voltage value 221 for enabling the starting capability
- a first delay time 1 - threshold value 2 1 I also as B lock-up speed 1-swinging value
- a second rotational speed 1 - threshold value 2 12 (representing a starting capability lower limit with respect to the minimum required rotational speed 210 for a required starting operation of the internal combustion engine 103).
- Vehicle electrical system voltage 1 1 2 was not high enough and thus the required speed 2 1 0 could not be achieved.
- a sixth area 246 describes a successful starting process, wherein in a subarea above the center of gravity of the characteristic circuit 230 with the designation IV an excessively high current II 1 has tended to flow into the starter 105, which points to a l can lead to too high a counter-momentum.
- an excessively high current II 1 has tended to flow into the starter 105, which points to a l can lead to too high a counter-momentum.
- the sub-range below the Deh h m o m e n t - D e h zah 1 Kennl inie 230 designated IV from a perfect startup procedure can be assumed.
- diagnoses which may possibly be made on the basis of the position of the map point, are: the existence of a start attempt in the case of property protection of the vehicle; the presence of a start attempt when there is a low pressure in the fuel system; and / or the presence of a start attempt
- the diagnosis of a start process can be subdivided into different time periods. After initiating the boot process, a specific window of time may first be awaited before a map point of the boot process is determined (e.g., 100ms or more). This makes it possible to hide unreliable measured values at the start of a startup process
- the map point can then be determined in a precise manner, the map point being e.g. which corresponds to the maximum speed achieved during the starting process.
- the map point on the rotation mode / D eh zah 1 - Ken n 1 i n i e 230 for the starter voltage 1 12 can be at the start of the starting process (possibly after the above-mentioned time window has elapsed).
- the starter diagnosis described in this document does not change the actual starting cascade. In particular, no additional time is required. which a starter 105 needs to face for startup problems. Therefore, the technological limits of a starter can be fully utilized 1 05 vol to allow the maximum availability of the starting system. The technological limit of the starter 105 is in the maximum possible energy never reach of the starter 105 before the starter 105 overheats (and then typically there is a total failure of the starter 105).
- FIG. 3 shows an exemplary time profile 310 of the (thermal) energy 300 of a starter 105 (ie, the cumulative amount of energy or of the energy)
- the (electrical) energy that is supplied to the starter 105 can be determined. This results from the starter voltage 1 12 and the starter current 1 1 1. Possibly. the energy supplied can be determined during a starting process on the basis of the starter voltage 112 and the characteristic 230 of the starter 105 for this starter voltage 1 1 2. So can be dispensed with a measurement of the starter current I I 1. Furthermore, typically the duration of the startup process
- a starting process leads to an increasing part 3 1 1 of the time course 310 of the (cumulative) energy 300 of the starter 105.
- the cooling of the starter 105 may be described by a (previously determined) thermal model of the starter 105.
- a thermal model of the starter 105 For example, between two starting operations, there is a decreasing portion of the time course 3 10 of the (cumulative) energy 300 of the starter 105.
- the amount of energy withdrawn from the starter 105 depends on the time between two directly successive starting operations.
- the time course 3 10 of the (thermal) energy 300 stored in a starter 1 05 can thus be based on the starter voltage 112 and a
- thermal model of the starter 105 for a sequence of (possibly unsuccessful) starting operations are determined. It can then be determined at a certain time whether the (thermal) energy 300 of the starter 105 has an energy threshold 301. Reaches or exceeds 302.
- a first energy threshold value 30 1 for example, a warning message can be output to a user of the starter 105, w obei the warning indicates that an overload of the starter 105 threatens.
- a second energy threshold 302 is a blockage of the starter 105th
- the blocking may e.g. for a certain blocking period.
- the blockage may occur until the energy 300 of the starter 105 has fallen below a specified level (eg, the first energy threshold 301).
- a reliable protection for a starter 105 can be provided.
- FIGS. 4a and 4b show exemplary statistical evaluations of starting processes.
- FIG. 4a shows a statistical distribution 402 of the start durations
- FIG. 4 a shows a continuous probability distribution 402. Typically, for different discrete ranges of start durations 400, the respective frequencies 401 are determined. From the distribution 402, the average start time 403 of starts can also be determined.
- the distribution 402 of Figure 4a may be determined with a moving window (e.g., based on the last N)
- a temporal evolution of the start durations 400 can be determined.
- the temporal development of the mean start time 403 can be determined.
- the middle start time 403 may be a time duration threshold
- FIG. 4b shows the (discrete) distribution 412 of the silence period 410 between two directly successive boot processes.
- the distribution 412 can be determined with a sliding window of the last N starts.
- an average rest period 413 between two consecutive start operations can be determined.
- Distribution 412 may be used to check whether the starter 105 is in accordance with a sizing provided for the starter 105 in terms of a maximum number of starts per unit time (e.g., per minute) and / or in relation to a maximum total number of starts over the
- Life of the starter 105 is used. Thus, it may be determined whether the probability of failure of the starter 105 is relatively high or relatively low (depending on whether the average rest period 413 is relatively low or relatively high, respectively). Further, based on the average silence period 413, it may be determined whether the altitude in FIG. 1 is relatively high or relatively low for overloading the starter 105 (depending on whether the average silence period 413 is relative) low or relatively high).
- a statistics function for a starter 105 can be set.
- the aim of the statistics function is, among other things, to assess the quality of the launches based on the start time 400 of the launches.
- the load of the starter 105 may be determined in the time between starts (e.g., based on the rest period 410 between starts). From the quality of the boot processes (via the distribution 402) and the load of the starter 105 (via the distribution 412), e.g. Optimizations in the design of a starter 1 05 and / or measures to reduce failures are derived.
- FIG. 5 shows a flowchart of an exemplary method 500 for
- the starter 105 is set up to burn a combustion engine 103 at one
- Startup process to drive In particular, it can be brought about by the starter 105 that the rotational speed 210 of the internal combustion engine 103 is brought to a value above a second dodge threshold 212, wherein the
- Combustion engine 103 is typically started at speeds 2 1 0 above the second speed threshold 2 12, and then can be operated without the support of the starter 1 05 alone due to the fuel combustion process.
- the method 500 includes determining 501 power information relating to electric power supplied to the starter 105 during startup of the racing motor 103.
- the starting torque can indicate the starter voltage 1 1 2 which is applied to the starter 105 for the starting process.
- the method 500 includes determining 502 rotational speed ⁇ in relation to a rotational speed 2 1 0 of the internal combustion engine 103 during the starting process.
- the speed information may indicate the maximum speed reached 2 10 during the startup process.
- the method 500 includes performing 503 a diagnosis of the startup operation and / or the starter 105 based on the performance information and based on the speed information. In particular, on the basis of the performance information and on the basis of the rotational speed, information can be determined with regard to the cause of an unsuccessful or erroneous starting process.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017210981.5A DE102017210981A1 (de) | 2017-06-28 | 2017-06-28 | Verarbeitungseinheit zur Überwachung eines Starters für einen Verbrennungsmotor |
| PCT/EP2018/065748 WO2019001972A2 (de) | 2017-06-28 | 2018-06-14 | Verarbeitungseinheit zur überwachung eines starters für einen verbrennungsmotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3645861A2 true EP3645861A2 (de) | 2020-05-06 |
Family
ID=62631096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18731807.6A Pending EP3645861A2 (de) | 2017-06-28 | 2018-06-14 | Verarbeitungseinheit zur überwachung eines starters für einen verbrennungsmotor |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3645861A2 (de) |
| CN (1) | CN110621870B (de) |
| DE (1) | DE102017210981A1 (de) |
| WO (1) | WO2019001972A2 (de) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0911953B1 (de) * | 1997-10-24 | 2003-05-07 | Valeo Equipements Electriques Moteur | Regelvorrichtung für den Anlasser eines Kraftfahrzeuges |
| US20110295459A1 (en) * | 2010-06-01 | 2011-12-01 | Gm Global Technology Operations, Inc. | Method and apparatus for monitoring a starter motor for an internal combustion engine |
| DE102013014352A1 (de) * | 2013-08-28 | 2015-03-05 | Liebherr-Werk Nenzing Gmbh | Verfahren zur Ermittlung des Ladezustands einer Batterie des Anlassers eines Verbrennungsmotors und Vorrichtung hierfür |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004031306A1 (de) * | 2004-06-29 | 2006-01-19 | Robert Bosch Gmbh | Kfz-Energie Management mit Zusatzfunktionalität Starterdiagnose |
| US7948099B2 (en) * | 2005-05-26 | 2011-05-24 | Renault Trucks | Method of controlling power supply to an electric starter |
| JP4977780B2 (ja) * | 2007-06-18 | 2012-07-18 | マック トラックス インコーポレイテッド | エンジン始動システムを監視するための方法および始動システム・モニタを含むエンジン |
| DE102007030297A1 (de) * | 2007-06-29 | 2009-01-02 | Daimler Ag | Verfahren und Vorrichtung zum Schutz eines Starters einer Kraftfahrzeugmotors |
| FR2925615B1 (fr) * | 2007-12-20 | 2017-07-28 | Renault Sas | Procede de commande pour demarreur d'un moteur a combustion et son application |
| US8234036B2 (en) * | 2008-06-16 | 2012-07-31 | GM Global Technology Operations LLC | Method and apparatus for starter motor diagnosis and prognosis using parameter estimation algorithm |
| JP5587689B2 (ja) * | 2010-07-12 | 2014-09-10 | 日立オートモティブシステムズ株式会社 | 車両の故障診断装置 |
| US8534082B2 (en) * | 2010-07-20 | 2013-09-17 | Thermo King Corporation | Engine starter predictive maintenance system |
| US8818611B2 (en) * | 2011-08-15 | 2014-08-26 | GM Global Technology Operations LLC | Method and apparatus to evaluate a starting system for an internal combustion engine |
| FR2986277A1 (fr) * | 2012-01-31 | 2013-08-02 | Peugeot Citroen Automobiles Sa | Procede de detection et de determination des defaillances d'un demarreur de type a post-pre engagement |
| SE536553C2 (sv) * | 2012-06-19 | 2014-02-18 | Scania Cv Ab | Diagnostisering av startsystem |
| SE536552C2 (sv) * | 2012-06-19 | 2014-02-18 | Scania Cv Ab | Diagnostisering av startmotor |
| US9506445B2 (en) * | 2014-01-30 | 2016-11-29 | GM Global Technology Operations LLC | Method and apparatus to evaluate a starter motor for an internal combustion engine |
| US9458815B2 (en) * | 2014-07-17 | 2016-10-04 | GM Global Technology Operations LLC | Method and apparatus to evaluate a starter for an internal combustion engine |
-
2017
- 2017-06-28 DE DE102017210981.5A patent/DE102017210981A1/de active Granted
-
2018
- 2018-06-14 CN CN201880020960.0A patent/CN110621870B/zh active Active
- 2018-06-14 WO PCT/EP2018/065748 patent/WO2019001972A2/de not_active Ceased
- 2018-06-14 EP EP18731807.6A patent/EP3645861A2/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0911953B1 (de) * | 1997-10-24 | 2003-05-07 | Valeo Equipements Electriques Moteur | Regelvorrichtung für den Anlasser eines Kraftfahrzeuges |
| US20110295459A1 (en) * | 2010-06-01 | 2011-12-01 | Gm Global Technology Operations, Inc. | Method and apparatus for monitoring a starter motor for an internal combustion engine |
| DE102013014352A1 (de) * | 2013-08-28 | 2015-03-05 | Liebherr-Werk Nenzing Gmbh | Verfahren zur Ermittlung des Ladezustands einer Batterie des Anlassers eines Verbrennungsmotors und Vorrichtung hierfür |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110621870B (zh) | 2021-10-08 |
| DE102017210981A1 (de) | 2019-01-03 |
| CN110621870A (zh) | 2019-12-27 |
| WO2019001972A3 (de) | 2019-03-14 |
| WO2019001972A2 (de) | 2019-01-03 |
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