JP4581931B2 - Electronic control device and electronic control device adaptation support method - Google Patents

Description

  The present invention relates to an electronic control unit that operates each actuator of an engine to control the output of the engine. The present invention also relates to an electronic control device adaptation support method for adapting various parameters related to the control of an electronic control device that operates each actuator of the engine to control the output of the engine.

  2. Description of the Related Art An electronic control device that operates each actuator of an engine to control engine output (output torque, exhaust characteristics, etc.) is well known. In the electronic control unit, various calculations for calculating the operation amount of each actuator are performed in accordance with the operating state and operating environment of the engine and further the acceleration request from the user. For example, in order to calculate the operation amount of the fuel injection valve in an electronic control device of a common rail type diesel engine, first, a basic value of the injection amount is calculated from the operation amount of the accelerator pedal and the rotational speed of the engine. Next, a command value for the injection amount is calculated by correcting this basic value based on the coolant temperature or the like. Then, a command value for the injection period by the fuel injection valve is set according to the command value for the injection amount and the fuel pressure in the common rail, and the fuel injection valve is opened over the command value for the injection period.

  By the way, in order to appropriately calculate the operation amount for controlling the output of the engine as desired by the above-described various calculations, it is necessary to perform adaptation so that the calculations can be performed correctly. In other words, it is necessary to adapt the parameters (calculation parameters) used for the calculation, such as the command value for the injection period and the correction value based on the cooling water temperature.

  Therefore, conventionally, a dynamometer is connected to the output shaft of the engine, and when the output of the engine is controlled by an electronic control unit, the output of the engine has been measured (Patent Document 1). Then, by measuring the output of the engine while setting the calculation parameter to various values, the value of the calculation parameter is adapted to an appropriate value.

  By the way, since various parameters are used when calculating the operation amounts of various actuators to control the output of the engine as described above, it is necessary to adapt these parameters. For example, when adapting the command value for the injection amount described above, not only the adjustment of the accelerator pedal operation amount and the engine speed and the basic value of the injection amount (adaptation of the basic value) but also the cooling water temperature It is necessary to adapt the correction value accordingly.

  However, in order to adapt these parameters, even if the output of the engine is measured while variably setting the values, other parameters are also variably set by the electronic control unit. For this reason, it is very difficult to determine whether the measured change in output is due to a change in a parameter desired to be matched or another parameter variably set by an electronic control unit. It was.

  For example, even if the engine speed and the accelerator pedal operation amount are fixed, the command value for the injection period calculated by the electronic control unit is not uniquely determined, not only the cooling water temperature, but also the fuel pressure in the common rail, etc. It changes according to. For this reason, even if the engine output is measured while changing the coolant temperature of the engine, the fuel pressure in the common rail is also variably set by another logic of the electronic control unit. Therefore, it is difficult to determine whether the measured change in engine output is due to the change in the injection period according to the change in the water temperature correction value or the change in the injection period according to the change in the fuel pressure It has become.

Further, in the case of the above example, when the map for determining the basic value of the injection amount is not yet adapted, in order to operate the engine by the electronic control unit, a provisional map for determining the provisional adaptation value is required before the adaptation. There is also a need to create.
Japanese Patent Laid-Open No. 2003-13794

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an electronic control device capable of easily adapting various operation parameters related to engine control, and an electronic control device adaptation support method. Is to provide.

  Hereinafter, means for solving the above-described problems and the operation and effects thereof will be described.

According to the first aspect of the present invention, in the electronic control device that operates each actuator of the engine to control the output of the engine, a plurality of command values used when operating each of the actuators to control the output of the engine A command value calculating means for calculating the command value, an operating means for operating each actuator based on the plurality of command values, and a command value given from outside the electronic control unit for each of the plurality of command values. A storage unit for storing a manual value which is a value used for a matching process including a value to be evaluated at the time of matching or a value input by a dealer for abnormality diagnosis, and a plurality of commands used by the operation means A plurality of individual instruction signals for instructing that each value is switched from a value calculated by the command value calculation means to a value stored in the storage unit Said means for capturing from the outside of the electronic control unit, depending on whether or not an instruction to the effect of switching the about what each of the plurality of individual instruction signal to the appropriate one of the plurality of command value, the calculated value and And switching means for individually switching which of the stored values the operating means uses for each of the plurality of command values.

  In the above configuration, the command value as the calculation parameter desired to be adapted or the command value calculated by the computation parameter desired to be adapted can be adapted as a manual value. Further, at this time, in order to suppress or avoid the change of the engine output due to the influence of the fluctuation of other parameters other than the calculation parameter desired to be adapted, the above-mentioned other parameters are also fixed as manual values. Can do. Therefore, according to the above configuration, calculation parameters can be easily adapted.

Furthermore, according to the above configuration, even when an abnormality is diagnosed at a dealer, the operation of narrowing down a portion having an abnormality can be simplified by fixing a predetermined command value using a manual value .

According to a third aspect of the present invention, in the first or second aspect of the present invention, the plurality of command values used by the operation means are switched from values calculated by the command value calculating means to values stored in the storage unit. It further comprises means for capturing a permission signal to be permitted, wherein the switching means performs switching of the command value instructed to be switched by the individual instruction signal when the switching is permitted by the permission signal. To do.

  In the above configuration, the change timing from the value by the command value calculation means to the manual value can be controlled by the permission signal. For this reason, for example, a plurality of command values desired to use manual values can be simultaneously set to manual values by the permission signal. For this reason, adaptation of various calculation parameters can be favorably supported.

According to a second aspect of the present invention, in the electronic control device for operating each actuator of the engine to control the output of the engine, a plurality of command values used when operating each of the actuators to control the output of the engine A command value calculating means for calculating the command value, an operating means for operating each actuator based on the plurality of command values, and a command value given from outside the electronic control unit for each of the plurality of command values. A storage unit for storing a manual value, which is a value used for the matching process including a value to be evaluated when matching, and a plurality of command values used by the operation unit are calculated by the command value calculation unit. Means for taking in a plurality of individual instruction signals for instructing switching from a value to a value stored in the storage unit from the outside of the electronic control unit; Depending on whether each of the serial plurality of individual instruction signal indicates the effect of switching the on a corresponding one of said plurality of command value, the calculated value and said operation means any of the stored values Switching means for switching each of the plurality of command values for each of the plurality of command values, wherein the engine injects high-pressure fuel stored in a pressure accumulating chamber through a fuel injection valve, and the plurality of commands The value includes a command value for the injection amount of the engine, an injection period, and a fuel pressure in the pressure accumulating chamber, and the means for calculating the command value for the injection period of the command value calculating means is a command for the injection amount. It calculates based on a value and the pressure of the fuel in the said pressure accumulation chamber.

  In the above configuration, the command value for the injection amount, the fuel pressure in the pressure accumulation chamber, and the injection period is included. Here, the injection period can be determined according to the injection amount and the fuel pressure in the pressure accumulating chamber. Therefore, when the command value for the injection period is adapted, the command value for the injection period can be easily adapted by setting the injection period to a manual value.

  When the command value for the injection amount is adapted, the command value for the injection period is preferably calculated by the command value calculation means. In this regard, in the above configuration, based on the individual instruction signal, the manual value is used for the command value of the injection amount, and the value by the command value calculation means is used for the command value of the injection period. The amount can be easily adapted.

According to a fifth aspect of the present invention, in the invention according to the fourth aspect , the input unit has a function of taking in a permission signal for permitting switching from a value calculated by the command value calculating unit to a value stored in the storage unit. A step of assigning to the manual value by the individual instruction signal for some of the plurality of command values used for operating each actuator when the various calculation parameters are adapted. It is performed when switching is permitted by a signal.

  In the above method, the change timing from the value by the command value calculation means to the manual value can be controlled by the permission signal. For this reason, for example, a plurality of command values desired to use manual values can be simultaneously set to manual values by the permission signal. For this reason, adaptation of various calculation parameters can be favorably supported.

According to a fourth aspect of the present invention, there is provided an electronic control device adaptation support method for adapting various calculation parameters related to the control of an electronic control device that operates each actuator of the engine to control the output of the engine. Command value calculating means for calculating a plurality of command values used for operating each actuator, operating means for operating each actuator based on the plurality of command values, and the electronic control unit for each of the plurality of command values A storage unit that stores a manual value that is a value used for the matching process including a value to be evaluated when the command value is matched, and the plurality of commands used when operating each actuator Each value is switched from a value calculated by the command value calculation means to a value stored in the storage unit. If the input unit capturing a plurality of individual instruction signal instructing the fact from the outside of the electronic control device, and each of the plurality of individual instruction signal instructs the requesting changeover above for a corresponding one of said plurality of command value Mounting the switching means for switching each of the plurality of command values separately for each of the plurality of command values to be used by the operation means depending on whether the calculated value or the stored value is used, The engine is an engine that injects high-pressure fuel stored in a pressure accumulating chamber through a fuel injection valve, and the plurality of command values are commands for an injection amount of the engine, an injection period, and a fuel pressure in the pressure accumulating chamber. Means for calculating the command value for the injection period of the command value calculation means based on the command value for the injection amount and the pressure of the fuel in the pressure accumulating chamber. Is intended to, upon adaptation of the various parameters, the storage unit, to provide an electronic control device including the input means and the switching means, each of said actuator upon adaptation of the various operation parameters of the command value calculation unit Some of the plurality of command values used for operation can be set to manual values.

In the above method, the command value for the injection amount, the fuel pressure in the pressure accumulation chamber, and the injection period is included. Here, the injection period can be determined according to the injection amount and the fuel pressure in the pressure accumulating chamber. Therefore, when the command value for the injection period is adapted, the command value for the injection period can be easily adapted by setting the injection period to a manual value. In addition, the above method may be described in claim 6 below.

The invention according to claim 6 is the invention according to claim 4 or 5 , wherein when the command value of the injection amount of the engine is adapted, a command value for the injection period is calculated by the command value calculation means, and the injection amount is calculated. As for the command value, a manual value is used.

  Thereby, adaptation of the command value of injection quantity can be performed appropriately. In particular, even when the command value of the injection amount is adapted at another place after the command value of the injection period is adapted, by using the command value by the command value calculation means for the command value of the injection period, It is not necessary to calculate the injection period for each injection amount command value and set it as a manual value, and the injection amount can be easily adapted.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment in which an electronic control device and an electronic control device adaptation support method according to the present invention are applied to a common rail diesel engine electronic control device and an adaptation support method will be described with reference to the drawings.

  FIG. 1 shows the overall configuration of the engine system according to the present embodiment.

  As shown in the drawing, an exhaust gas recirculation passage (EGR passage 8) communicating with the exhaust passage 6 is provided in the intake passage 4 of the diesel engine (engine 2). An EGR valve 10 that adjusts the flow area from the intake passage 4 to the EGR passage 8 is provided between the intake passage 4 and the EGR passage 8.

  On the other hand, the fuel in the fuel tank 12 is pumped up by the fuel pump 16 through the fuel filter 14. The fuel from the fuel pump 16 is pressurized and supplied (pressure fed) to the common rail 18. The pumped fuel is stored in a high pressure state at the common rail 18 and is supplied to the fuel injection valves 22 of each cylinder (here, four cylinders are illustrated) via the high pressure fuel passage 20. The fuel injection valve 22 is connected to the fuel tank 12 via a low pressure fuel passage 24.

  On the other hand, the electronic control unit (ECU 30) is mainly composed of a microcomputer. The ECU 30 detects values detected by various sensors that detect the operating state and operating environment of the diesel engine, such as a fuel pressure sensor that detects the fuel pressure in the common rail 18 and a rotation angle sensor that detects the rotation angle of the output shaft, and acceleration by the user. A detection value of an accelerator sensor that detects an operation amount of an accelerator pedal operated in response to a request is taken in, and the output of the engine 2 is controlled based on this value. That is, the output of the engine 2 is controlled by operating various actuators such as the EGR valve 10, the fuel pump 16, and the fuel injection valve 22.

  In controlling this output, the ECU 30 calculates various command values used when setting the operation amounts of the various actuators.

  FIG. 2 shows functional blocks of the ECU 30 relating to the calculation of these command values.

  The injection period command value calculation unit B1 is a part that calculates a command value for the injection amount based on various detection values and the like. The injection amount command value calculation unit B2 is a part that calculates a command value for the injection amount based on various detection values and the like. The injection timing command value calculation unit B3 is a part that calculates a command value for the injection timing (injection start timing) based on various detection values and the like. The fuel pressure command value calculation unit B4 is a part that calculates a command value (target value) of the fuel pressure in the common rail 18 based on various detection values and the like. The EGR opening command value calculation unit B5 is a part that calculates a command value for the opening of the EGR valve 10 based on various detection values and the like.

  The storage parts M1 to M5 are parts for storing manual values for the above command values.

  The switching unit S1 is a part that outputs either a command value calculated by the injection period command value calculation unit B1 or a manual value stored in the storage unit M1 as a final command value. The switching unit S2 is a part that outputs either a command value calculated by the injection amount command value calculation unit B2 or a manual value stored in the storage unit M2 as a final command value. The switching unit S3 is a part that outputs either a command value calculated by the injection timing command value calculation unit B3 or a manual value stored in the storage unit M3 as a final command value. The switching unit S4 is a part that outputs either a command value calculated by the fuel pressure command value calculation unit B4 or a manual value stored in the storage unit M4 as a final command value. The switching unit S5 is a part that outputs either a command value calculated by the EGR opening command value calculation unit B5 or a manual value stored in the storage unit M5 as a final command value.

  The switching instruction units A1 to A5 are portions for instructing which of the above-described switching units S1 to S5 should be output. Each of these switching instruction units A1 to A5 has a value of an individual manual flag instructing that each output of each of the switching units S1 to S5 is a manual value, and a value of a permission flag permitting the manual value to be set. take in. Based on the logical product of the values of the individual manual flag and the permission flag, the outputs of the switching units S1 to S5 are set. That is, for example, when the permission flag is “1” and the individual manual flag input to the switching instruction unit A1 is “1”, the output of the switching unit S1 is a manual value. For example, when the permission flag is “0”, none of the outputs of the switching units S1 to S5 is a manual value. Incidentally, the individual manual flag becomes “1” when the individual instruction signal shown in FIG. 1 is taken into the ECU 30, and the permission flag is obtained when the permission signal shown in FIG. 1 is taken into the ECU 30. It will be “1”.

  Each command value calculation unit calculates a command value by calculating various calculation parameters based on various detection values. Here, the details of the injection amount command value calculation unit B2 are shown in FIG.

  The basic map bs1 is configured with the map illustrated in FIG. 4A, and is based on the rotation speed (NE) of the output shaft of the engine 2 and the accelerator pedal operation amount (ACCP). This is a part for calculating the quantity Qb. The maximum rotation speed setting map bs2 is a part for setting the upper limit value of the fuel injection amount in accordance with the rotation speed. The smoke limit map bs3 is a part for calculating a correction value of the injection amount for suppressing the generation of soot (smoke) according to the rotational speed. The water temperature correction map bs4 is configured to include the map illustrated in FIG. 4B, and is a part that calculates the injection amount correction value based on the cooling water temperature (THW) of the engine 2. The intake air temperature correction map bs5 is a part for calculating a correction value for the injection amount based on the intake air temperature (THA). The starting injection amount map bs6 is a part for setting the injection amount during idling.

  The correction value calculation unit bs7 calculates a basic correction value for the injection amount Qb based on the smoke limit map bs3, the water temperature correction map bs4, and the intake air temperature correction map bs5, with the value set by the maximum rotation speed setting map bs2 as the upper limit. It is a part to do. The correction unit bs8 is a part that corrects the basic injection amount Qb with the output of the correction value calculation unit bs7 or with the value of the starting injection amount map bs6.

  The output of the correction unit bs8 is the output of the inter-cylinder correction map bs9 that outputs a correction value that compensates for the variation in the injection amount caused by the individual difference of each fuel injection valve 22 between the cylinders, and each fuel injection between the cylinders. It is corrected by the output of a delay correction map bs10 that outputs a correction value that compensates for variations in the injection start timing caused by individual differences in the valves 22.

  The injection amount corrected in this way is output from the injection amount command value calculation unit B2 as a final injection amount command value.

  By the way, in order to control the output (output torque, exhaust characteristic) of the engine 2, various calculation parameters (command value such as injection amount, basic value such as basic injection amount Qb, etc., correction value of injection amount Qb due to water temperature) It is necessary to adapt the correction values of various basic values such as This adaptation can be performed by measuring the output of the engine 2 when the calculation parameter is set to various values. However, when the ECU 30 is used to operate the various actuators of the engine 2, the adaptation process becomes complicated if the map of each command value calculation unit shown in FIG. 2 is rewritten each time.

  Therefore, in the present embodiment, as shown in FIG. 2, the storage units M1 to M5 and the switching units S1 to S5 are provided so that various actuators can be operated using manual values set by the outside. To do. This will be described in detail below.

  FIG. 5 shows a method for adapting the injection period, among other calculation parameters. As shown in the figure, at this time, the adaptation is performed in a state where the fuel injection valve 22 is not yet mounted on the engine 2. That is, the fuel injection device 22 is supplied to the fuel injection valve 22 by operating the fuel supply device 46 with the adapting computer 44 in a state where the tip of the fuel injection valve 22 is placed in a container 42 having a strain gauge 40 on its inner periphery. Adjust the fuel pressure. Further, the adaptation computer 44 stores the manual value for the command value of the injection period in the storage unit M1 shown in FIG. 2, sets the individual manual flag of the switching instruction unit A1 to “1”, and appropriately The permission flag is set to “1” at the timing. Thereby, the fuel injection valve 22 is opened during the injection period set by the manual value. Then, the pressure exerted on the strain gauge 40 by the fuel injected at this time is converted into an electric signal, and the fuel injection rate and the fuel injection amount are measured.

  The adaptation computer 44 measures the fuel injection amount while variously setting the injection period in a state where the pressure of the fuel supplied to the fuel injection valve 22 is fixed, and the required injection amount and the injection period when the fuel pressure is fixed. To fit the relationship. A map shown in FIG. 6 for calculating the injection period from the fuel pressure and the injection amount is created by performing such work in a state where the pressure is fixed at various pressures. This map is provided in the injection period command value calculation unit B1 shown in FIG.

  When the basic adaptation is completed in this way, as shown in FIG. 7, the engine 2 is arranged on the test bench to adapt the various calculation parameters.

  In the figure, a dynamometer 50 generates a state in which the engine 2 is artificially mounted on a vehicle by absorbing the output torque of the engine 2. The adjusting device 52 is a device that adjusts the cooling water temperature, the intake air temperature, and the like of the engine 2. Furthermore, the measuring device 54 is a device that measures the exhaust characteristics of the engine 2 and the like, and measures the rotational speed of the output shaft of the engine 2. Further, the adaptation computer 56 has a function of operating the adjusting device 52 and the dynamometer 50 and setting an appropriate command value of the ECU 30 to a manual value. The adaptation computer 56 adapts various calculation parameters based on the measurement result obtained by the measurement device 54.

  FIG. 8 shows a procedure of processing related to the calculation parameter matching performed by the matching computer 56. This process is executed by the matching computer 56.

  In this series of processes, first, in step S10, manual values for appropriate command values are stored in the corresponding ones of the storage units M1 to M5. Further, the individual manual flag is set to “1” by outputting an individual instruction signal to the ECU 30 so that the output of the corresponding one of the switching units S1 to S5 is a manual value. For example, when none of the injection amount command value calculation unit B2, the injection timing command value calculation unit B3, the fuel pressure command value calculation unit B4, and the EGR opening degree command value calculation unit B5 shown in FIG. The manual values are stored in the storage units M2 to M5, the individual manual flags of the switching instruction units A2 to A5 are set to “1”, and the individual manual flag of the switching instruction unit A1 is set to “0”.

  In a succeeding step S12, the permission flag is set to “1” by outputting a permission signal to the ECU 30. Thereby, the manual value is used, and various actuators are operated by the ECU 30.

  In step S14, the output of the engine 2 is measured by the measuring device 54, so that the conforming value is evaluated. For example, when the basic map bs1 shown in FIG. 3 is adapted, based on the rotational speed of the output shaft of the engine 2 measured by the measuring device 54 and the operation amount of the accelerator pedal assumed by the adaptation computer 56, A basic injection amount Qb is set. Then, the basic injection amount Qb is set as a manual value. Furthermore, a manual value for the command value of the fuel pressure is appropriately set. Based on these set manual values, the injection period is set in the ECU 30 using the map shown in FIG. 6, and the fuel injection valve 22 is operated. Then, by measuring the output of the engine 2 at this time, the adaptation computer 56 evaluates the adaptation value of the basic injection amount Qb.

  When it is determined that the appropriate value is not appropriate (step S16: NO), the process returns to step S10 to set the manual value to another value. Here, for example, when it is determined that the appropriate value of the injection amount Qb is not appropriate, the injection amount Qb is set to another value.

  On the other hand, when it is determined that the conforming value is appropriate (step S16: YES), this conforming value is adopted, and this process is temporarily terminated. That is, for example, when the injection amount Qb is appropriate for the output of the engine 2, the injection amount Qb is adopted as an appropriate value on the assumption that the injection amount Qb is appropriate for the rotational speed and the operation amount of the accelerator pedal at that time. .

  In this way, each calculation parameter is adapted in order from the upstream parameter. That is, for example, when the water temperature correction map bs4 shown in FIG. 4B is adapted, the temperature of the cooling water is controlled to a value that the water temperature needs to be corrected by operating the adjusting device 52. The calibration computer 56 sets a correction value based on the measured water temperature, and the value obtained by correcting the already-adapted basic injection amount Qb with this correction value is shown in FIG. 3 as a manual value. Stored in the storage unit M2. And the correction value set is evaluated by measuring the output of the engine 2.

  It should be noted that other parameters do not necessarily have to be fixed to manual values when the calculation parameters are adapted. For example, regarding the adaptation of the command value of the opening degree of the EGR valve 10, instead of performing this as a manual value for other parameters, an injection amount command value calculation unit B2, an injection timing command value calculation unit B3, a fuel pressure command value calculation unit B4 You may perform in the state which operated these, after the adjustment | compatibility of was completed.

  In this way, it is possible to easily adapt to the manual value by appropriately switching to the manual value. In particular, when the calibration prior to the engine bench shown in FIG. 5 and the calibration in the engine bench shown in FIG. 7 are performed at different locations (when performed by another contractor), an individual manual flag is used. Setting a manual value is effective. That is, after adapting the map shown in FIG. 6 that defines the relationship between the required injection amount and the fuel pressure and the injection period, the command value for the injection period is used as an exception using the map shown in FIG. An adaptation can be made. For this reason, even if the adaptation before the engine bench shown in FIG. 5 and the adaptation on the engine bench shown in FIG. The adaptation can be easily performed without knowing the information on the map shown in FIG.

  Furthermore, according to the ECU 30 having the above-described configuration, it is possible to easily perform the abnormality diagnosis of the engine system by a dealer or the like. That is, for example, by checking the presence or absence of an abnormality before and after setting an appropriate command value as a manual value, it is possible to determine the presence or absence of an abnormality in the command value or a calculation parameter for calculating the command value.

  On the other hand, when such switching is not possible, the adaptation procedure is as shown in FIG. In this case, first, a map unnecessary for matching is invalidated (step S20), and a map that has not been matched yet and is necessary for matching is temporarily set (step S22). Thus, the command value is set by the ECU 30 based on the existing map or the map temporarily set in step S22 (step S24), and the conforming value is evaluated (steps S26 and S28). However, in this case, due to the influence of various calculation parameters, a plurality of command values cannot be fixed, and adaptation becomes difficult. For example, when the water temperature correction value of the injection amount is adapted, even if the fuel injection valve 22 is operated based on the injection period corresponding to the injection amount corrected for the water temperature by the map in the ECU 30, the fuel pressure in the common rail 18 is adjusted. When the water temperature is corrected to the target value, the measurement result of the output of the engine 2 includes not only the influence of the correction value of the injection amount but also the influence of the correction value of the fuel pressure. For this reason, it becomes difficult to adapt the water temperature correction value of the injection amount.

  According to the embodiment described in detail above, the following effects can be obtained.

  (1) In order to selectively use each command value by each command value calculation unit and the manual value stored in the storage units M1 to M5 for the operation of the actuator, the switching units S1 to S5. And switching instruction units A1 to A5. As a result, the calculation parameters can be easily adapted, and the operation of narrowing down the location having an abnormality can be simplified even at the time of abnormality diagnosis at a dealer.

  (2) The switching instruction units A1 to A3 are configured to switch the command value corresponding to the individual manual flag set to “1” to the manual value when switching is permitted by the permission signal. For this reason, the change timing from the value by the command value calculation unit to the manual value can be controlled by the permission signal. For this reason, for example, a plurality of command values for which manual values are to be used can be simultaneously set to manual values by the permission signal. For this reason, adaptation of various calculation parameters can be favorably supported.

  (3) The command values for the engine injection amount, the fuel pressure in the common rail 18 and the injection period can be set to manual values. Thus, when the command value for the injection period is adapted, the command value for the injection period can be easily adapted by setting the injection period to a manual value. When the command value of the injection amount is adapted, the injection amount can be easily adapted by setting the command value of the injection period to a value calculated by the injection period command value calculating unit B1.

(Other embodiments)
The above embodiment may be modified as follows.

  -Even if it does not have the permission function to a manual value by a permission flag, the effect of said (1) of previous embodiment can be acquired.

  The plurality of command values used when operating the actuator of the engine are not limited to those exemplified in the above embodiment. At this time, when there are command values determined based on the values of other command values, such as those exemplified as the command values for the injection period in the previous embodiment, the command value calculation unit (command value calculation means) It is particularly effective to have a function of switching between a value by) and a manual value. That is, in this case, if the command value in the downstream is first adapted, and then the adaptation value in the upstream is adapted by the command value calculation means, the adaptation of the command value can be easily performed. be able to.

  Further, for example, in a gasoline engine provided with a mechanism that varies the valve characteristics of an intake valve and an exhaust valve, a command value of the valve characteristic may be included.

  In the above embodiment, the ECU mounted on the engine system after the adaptation is configured to be able to capture the individual instruction signal and the permission signal and include the storage units M1 to M5, but is not limited thereto. . For example, after adaptation, the storage units M1 to M5, the switching units S1 to S5, and the switching instruction units A1 to A5 may be mounted on the engine system. Thereby, although it becomes impossible to support abnormality diagnosis, the configuration of the ECU 30 can be simplified.

The figure which shows the whole structure of the engine system concerning one Embodiment. The functional block diagram concerning calculation of the command value in ECU in the same embodiment. The functional block diagram concerning calculation of the injection quantity in the embodiment. The figure which shows the map used when calculating the injection quantity. The figure which shows the technique of the adjustment of the calculation parameter of ECU before an engine bench. The figure which shows the map which calculates an injection period from injection amount and fuel pressure. The figure which shows the method of the adjustment of the calculation parameter in an engine bench. The flowchart which shows the procedure of the adjustment of the calculation parameter concerning this embodiment. The flowchart which shows the procedure of the adaptation of the conventional calculation parameter.

Explanation of symbols

  2 ... engine, 22 ... fuel injection valve, 30 ... ECU (electronic control unit).

Claims (6)

In an electronic control unit that operates each actuator of the engine to control the output of the engine,
Command value calculating means for calculating a plurality of command values used when operating each actuator to control the output of the engine;
Based on the plurality of command values, operating means for operating the actuators;
For each of the plurality of command values, a value or a dealer that is supplied from outside the electronic control unit and includes a value to be evaluated when adapting the command value is used for abnormality diagnosis A storage unit for storing manual values that are input values;
A plurality of individual instruction signals for instructing switching of each of the plurality of command values used by the operation unit from the value calculated by the command value calculation unit to the value stored in the storage unit is provided from the outside of the electronic control unit. Means to capture;
Depending on whether or not each of the plurality of individual instruction signals instructs to switch the corresponding one of the plurality of command values, either the calculated value or the stored value is selected as the operation means. Switching means for switching each of the plurality of command values for each of the plurality of command values. In an electronic control unit that operates each actuator of the engine to control the output of the engine,
Command value calculating means for calculating a plurality of command values used when operating each actuator to control the output of the engine;
Based on the plurality of command values, operating means for operating the actuators;
For each of the plurality of command values, a storage unit that stores a manual value that is given from the outside of the electronic control unit and that is used for a matching process including a value to be evaluated when the command value is matched When,
A plurality of individual instruction signals for instructing switching of each of the plurality of command values used by the operation unit from the value calculated by the command value calculation unit to the value stored in the storage unit is provided from the outside of the electronic control unit. Means to capture;
Depending on whether or not each of the plurality of individual instruction signals instructs to switch the corresponding one of the plurality of command values, either the calculated value or the stored value is selected as the operation means. Switching means for switching each of the plurality of command values separately for each of the plurality of command values,
The engine is an engine that injects high-pressure fuel stored in a pressure accumulating chamber through a fuel injection valve,
The plurality of command values include command values for the engine injection amount, the injection period, and the fuel pressure in the pressure accumulating chamber,
The electronic control device according to claim 1, wherein the command value calculation means for calculating the command value for the injection period is calculated based on the command value for the injection amount and the pressure of fuel in the pressure accumulating chamber. A plurality of command values used by the operation means, further comprising means for capturing a permission signal for permitting switching from a value calculated by the command value calculation means to a value stored in the storage unit;
It said switching means, the individual response to an instruction signal to switch the directed by the command value of the switching, electronic control device according to claim 1 or 2, wherein the performed when said switching by said enabling signal is permitted . For an electronic control device that operates each actuator of the engine to control the output of the engine, in an electronic control device adaptation support method that adapts various calculation parameters related to the control,
Command value calculation means for calculating a plurality of command values used for operating each actuator of the engine, operation means for operating each actuator based on the plurality of command values, and each of the plurality of command values A storage unit that stores a manual value that is given from the outside of the electronic control unit and that is used for a matching process that includes a value to be evaluated when the command value is matched, and that is used when the actuator is operated. An input means for fetching a plurality of individual instruction signals from outside the electronic control device for instructing to switch each of the plurality of command values from a value calculated by the command value calculating means to a value stored in the storage unit; if each of the individual instruction signal indicates the effect of switching the on a corresponding one of said plurality of command value And a step of mounting a switching means for switching to each separate for each of the plurality of command value whether to use said operation means any of the calculated values and the stored values to the electronic control device depending on whether,
The engine is an engine that injects high-pressure fuel stored in a pressure accumulating chamber through a fuel injection valve,
The plurality of command values include command values for the engine injection amount, the injection period, and the fuel pressure in the pressure accumulating chamber,
Of the command value calculation means, the means for calculating the command value for the injection period is calculated based on the command value for the injection amount and the fuel pressure in the pressure accumulating chamber,
When adapting the various parameters, the electronic control device including the storage unit, the input unit, and the switching unit is provided to operate the actuators when adapting the various calculation parameters of the command value calculating unit. An adaptation support method for an electronic control device, characterized in that some of the plurality of command values to be set can be set to manual values. The method further includes a step of giving the input unit a function of taking in a permission signal that permits switching from a value calculated by the command value calculating unit to a value stored in the storage unit,
When adapting the various calculation parameters, switching to a manual value by the individual instruction signal for some of the plurality of command values used for operating the actuators is permitted by the permission signal. The method for supporting adaptation of an electronic control device according to claim 4, wherein Upon adaptation of the command value of the injection amount of the engine, the command value for the injection period is calculated by the command value calculating means, according to claim 4 for the command value of the injection quantity is characterized by using a manual value or 5. An electronic control device adaptation support method according to 5.

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