JPS6168603A - Apparatus for altering character value memorized in electronic controller - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

The present invention is directed to a device for changing characteristic quantities stored in a machine, e.g., a C electronic control unit U for internal combustion, as set forth in claim 1. Regarding. Prior Art '4 Child Control Device' A device of this type in which stored characteristic quantities are changed is already known. 1iill!
The control program of the computer is operated at nine characteristic operating points and the operating variables are measured. In practice: I will compare the setpoint actuation variable with the corresponding setpoint actuation variable of the actuator and the resulting deviation (depending on whether the characteristic variable in question, which is stored in the electronic control unit, actually The characteristic quantities obtained by this device are written in a fixed manner and henceforth define the characteristics of the subsequent test. While this type of device has been recognized as being practical, it has a very complicated structure and requires specific personnel to operate. Electronic control device, which on the one hand is advantageous in terms of cost and on the other hand makes it very easy to operate

[The purpose is to provide a convenient 1 m distance for changing stored characteristic quantities. The means for determining the points Jq and Kl and the effects of the invention have the features described in paragraph 1 of the patent claim.
For example, the device according to the invention for changing the hidden characteristic variables of the electronic control system 16 for the internal combustion engine is designed so that the characteristic variables stored in the control device can be used to correct deviations caused by the production or operation of the control device. It has the advantage of being extremely easily modifiable. This can be done, for example, during a normal period of time or during a relatively large period of time for the respective device or engine. Further, the adjustment setting of the correction j shift in the quadruple restraint device can be performed by a factory worker. This is because the features of the present invention are: 4 simply operable. Further advantages also arise in the implementation section of the invention which will be elucidated below in conjunction with the description of the examples. Embodiments Next, the present invention will be explained in detail with reference to the drawings with reference to the illustrated embodiments. zA 1 +′A! Now, the generator 11 and the regulating weight 1
An internal combustion engine 10 is shown with two cylinders. Generator 1
The output signal of 1 is connected to Naruko control device 1 through connection t: 13.
4. The electronic 7511-bag control via the tangential line 15 controls the adjustment cord 12 between the internal combustion grooves. Control device 1
4 has inno-surfaces 16 in series. For example, in a factory / A-4! An adjustment setting device 17 is connected to this series -f) controller 16 in order to test the position. This adjustment setting device f? 17, for example, no-load adjustment settings, injection time adjustment settings in the injection device,
The matching of the exhaust gas recirculation device, which is controlled by the characteristic range value and whose ignition or alignment is controlled by the characteristic range, takes place. The invention is not limited to the application of the no-load regulation settings which will now be described, but is used for the control of a device or engine for all characteristic variables stored in memory. The measuring device 18 is
Each time I made f! It is connected to the internal combustion engine 10 for monitoring the amount of h. Due to the connection between the control device 14 and the key 1 setting device 17, the two devices interact via the serial interface 16 according to a predetermined scale. Through a corresponding identification, the setting device 1T sends the respective correction to the control device 14 via the mode switch 19.
4i adjustment setting, and in the case of no-load adjustment setting, a command for PA0 adjustment setting is sent out. For example, correction to the injection quantity; key 20 for reducing or increasing the direct pressure.
By the operations 21 to 21, the power supply 14 is requested to increase or decrease the injection amount. The measuring device 18 for precisely adjusting and setting the correction coefficient is, for example, a reprint Co tester. At that time, what is the instantaneous value for the amount of injection IIt? lli correct errors are temporarily stored in the CPU of the controller 14. Continue this process until you arrive at the precise no-load adjustment setting. After this adjustment setting operation is completed, the control device shuts off the adjustment setting device 17 or switches/switches the mode switch 19 to store the instantaneous correction head for the injection amount in no-load operation in the memory (non-operation Memo IJ RAM or EEPROM) Convey the command to enter KN. Until the next key 1 setting process, this stored value for injection during no-load operation becomes the store rod. For example: the non-gas j'11: range or other characteristic ranges for the ignition angle can be adjusted and changed in a Jβ billion manner by corresponding actuation of the mode switch 19. Of course, the adjustment and setting device has only two grooves for adjustment and setting during no-load conditions. In this case, the mode switch 19 in the adjustment setting device 17
can be omitted. The adjustment settings are performed as described above. The top 61 ClCp key double-decreased post-key j setting t17 is shut off or controlled in interstage operation! It is separated from the position 14. Due to the interruption of the dialogue message caused by this, the CPU of the control device 14 stores the correction coefficients in the connection memory again. If the control device's plug-in is free, the control side setting can also be realized using a simple wiring connection. An embodiment using two training devices is shown in FIG. In the control line 14, the two control lines 30 and 31 have resistances 32 and 33, respectively.
It is connected to and sold to a predetermined voltage, for example, the power supply voltage of the control device 14, via the power source. Further control l11!3 (1, 31
is connected to the CPU 34 of the Senkomaba 14. Wiring harness 35 connected to control 3 and 14
An adapter 36 is inserted and connected between the controller 14 and the controller 14 . This adapter 36 has two switches 37 and 38 which enable the control 430.31 to be connected to earth potential PC.
Contains. The start of the adjustment setting process is signaled to the ii+11.1gl device 14 by the simultaneous opening of two switches 37.38, the closing duration of the switches being determined by the predetermined lower and upper interleavings. determined. After this initial setting, the control device 14 is activated by a corresponding switch (
By operating the switches 37 and 38), the injection amount at no-load is increased or decreased by 1 degree. In this case too, a customary Co tester is used for measuring ff1ttffi for precise adjustment settings. Instant correction to the injection amount is performed by the fj control device RAM.
is temporarily stored. After accurate CO sub-adjustment setting 1 [The imaging device receives a report that the adjustment setting process has completed. For this purpose, two switches 37, 38 are closed during the duration determined by the IC, for example Maehara. As a result, the operator is required to store one correction shift in the persistent memory (Fig. 5f, 3).
A device requiring only a purchase pin is shown. The 1tIJ- line 40 connected to the cPU 34 K% switch 39 of the 1jlln device 14 is connected to 47. The control wire 40 is connected to a predetermined potential between the power supply (voltage or battery voltage) and ground via a voltage divider circuit also consisting of resistors 11 and 42. Switch 39 with two switching positions
Contains. The switch 39 can connect the control line 40 to the supply voltage or battery voltage or to earth potential. The third switching position fixes the control line 400 directly centered by the resistance values of resistors 41 and 42. In light of this embodiment, the adjustment process for safety should be initialized through an appropriate method. If there is a separate switch such as the no-load and full-load switches on the internal twisting machine 1 and 4, for example / It is conceivable that the opening/closing may occur for a duration exceeding the set threshold. The initial setting deferred payment # device 14 is ready to increase or decrease the injection power under no-load conditions by corresponding operation of the switch 51c. The instantaneous complement and trick is, in this case as well, the RA of the control gl device jζ14.
Temporarily stored in M. For example: After the completion of the adjustment setting process, which is indicated by fully depressing the access pedal and issuing the #load transfer command, the instantaneous/temporal correction factor l for the injection f1 is stored in the persistent memory. Of course, the corrected characteristic area can also be written into the direct seeding continuous memory by operating a switch without passing through the temporary memory. It is well known that this method may be more advantageous in some cases. In the present invention, there is a point that the use of a second computer is avoided. Moreover, the additional cost for adjustment setting value #17 is extremely small). Figures 2 and 6
Figure y)-2: In the example (・A-setting device can be realized by means of a flexible connector part or adapter.Furthermore, in all methods, the respective characteristic 1 is erroneously shifted. In some cases, safety is also a concern.It is acknowledged that this is also a negative benefit.

[Brief explanation of drawings]

FIGS. 11 to 3 are schematic circuit diagrams showing the actual and conventional apparatus of the present invention, respectively.

Claims (7)

[Claims] 1. stored in an electronic control device for the device or machine, which operates the device or machine in at least one operating point, measures operating characteristic quantities and compares them with setpoint operating quantities, for the purpose of compensating for variations or aging of the device or machine; In the device for changing the characteristic quantity, the correction quantity is formed according to the result of the target-actual value comparison, and is connected to the electronic control unit (14) during the correction quantity detection period, and the correction quantity is changed each time. The switching device (19, 20, 21,
Device for changing stored characteristic variables in an electronic control unit, characterized in that a device (17, 36) is provided for increasing or decreasing via the device (37, 38, 39). 2. The adjustment setting device is a serial interface (16)
2. Device for changing stored characteristic variables in an electronic control device according to claim 1, which is connected to a control device (14) via a control device. 3. 3. A device for changing a stored characteristic quantity in an electronic control device according to claim 1 or 2, wherein the correction amount in each case is stored in a non-volatile memory of the control device. 4. The stored characteristic in an electronic control device according to any one of claims 1 to 3, wherein the stored correction amount is converted into a characteristic value that is individually stored after completion of correction amount detection. Quantity change device. 5. 5. A device for changing a stored characteristic quantity in an electronic control device according to any one of claims 1 to 4, wherein the adjustment setting device is configured as a cable connector. 6. From claim 1, the termination of the correction variable detection is signaled to the control device via a specifically defined actuation of the switching device or by the onset of a change of the respective operating point of the internal combustion engine above a threshold value. 6. A device for changing a stored characteristic quantity in an electronic control device according to any one of items 5 to 5. 7. For at least one of CO adjustment setting during no-load rotation by storing correction value of injection amount, adjustment setting of exhaust gas feedback rate, adjustment setting of ignition angle, and adjustment setting of injection amount for a specific operating range of the internal combustion engine. A device for changing stored characteristic quantities in an electronic control device according to any one of claims 1 to 6.