JPS60191845A - Failure indicating device for vehicle control device - Google Patents

Abstract

PURPOSE:To make it possible to simply understand a content to be indicated, by providing such an arrangement that with the use of only one of an optical indicating member normal and abnormal indications which give the results of diagnosis for predetermined diagnostic items are displayed in a predetermined order and in a simple on-and-off pattern. CONSTITUTION:In the case of application to an electronic control type fuel injection device 1, a control unit 14 carries out various diagnosises in accordance with signals from a speed detector 12, an acceleration detector 14 and a water temperature detector 15, a voltage signal from a battery 19, etc. Even if onl one abnormality is judged for a plurality of diagnostic items, whether the result of diagnosis for every diagnostic item is normal or abnormal is successively indicated one by one by means of a lamp 20. In this arrangement a timer slot having a predetermined time is given to each diagnostic item, and a predetermined light-extinguishing time is set during each timer slot. Further, the lamp 20 is lit on and off in a short cycle period so that it is distinguished from a light-on condition upon judgement of a normal condition.

Description

[Detailed Description of the Invention] The present invention is a book related to a fault display device for a vehicle control device.
- As the control system becomes more complex, various sensors, adjustment elements, etc. in the control system become more complex.
Fault display devices for displaying I-blocks are becoming increasingly important, and various systems have been proposed in the past.

In this type of conventional equipment, voltage codes configured so that different ζ positive values, each having a predetermined duration, appear sequentially, are set in advance for each diagnostic item, and abnormal pleasure is detected. A device that sequentially outputs voltage code signals corresponding to each detected diagnostic item from a single output line (Japanese Unexamined Patent Publication No. 57-31004)
, or has a display device that indicates an abnormal location by repeatedly displaying an intermittent number of times of 2t[ or more, and indicates an abnormal location by repeatedly displaying the intermittent display on the display in the order in which each intermittent number of times is displayed. Casting FF1 (Japanese Unexamined Patent Publication No. 1983-1999
-117007) etc. are being prayed for. However, all of these proposed failed devices do not indicate the nature of the failure through voltage cords or flashing I4P lines! ! Since it is a type of weapon that uses iron and has four gun signals, it has the disadvantage that it is easy to hear and difficult to handle.

Therefore, the purpose of the present invention is to enable anyone to understand the content of the obstacle on the vehicle without using complicated and difficult-to-remember codes, and to provide a display device with a simple mechanism, which is extremely economical. An object of the present invention is to provide a fault display device for a vehicle control device.

The configuration of the present invention is configured to determine whether each of a plurality of predetermined diagnostic items is normal or abnormal.8. means for carrying out the analysis and outputting data showing the results; means for storing the carcass data; means for determining whether or not an abnormality is determined in at least one of the above diagnostic items; an optical display means; If at least one of the diagnostic items is determined to be abnormal,
The optical display means is turned on and off in a predetermined order based on the above data to indicate whether the diagnostic items are normal or normal, and whether the diagnostic items are abnormal or normal is displayed in a predetermined on/off manner. It is characterized in that it includes a means for performing the turn according to the turn.

The present invention will be described in detail below with reference to the illustrated embodiments.

FIG. 1 shows an embodiment of an electronically controlled fuel injection device equipped with a failure indicating device according to the present invention. It is equipped with one electronically controlled fuel injection device, a distributed fuel injection pump 3 for injecting and supplying fuel to a diesel engine 2, and a control unit 4.

The distributed fuel injection unit 3 has a plunger 5 fitted in a plunger barrel 21, a driving disc 6 driven by a defuser engine IK, and a cam disc 7 in contact with the driving disc 6. Accordingly, the five plungers are configured to rotate within the plunger barrel 21 according to the rotation of the diesel engine 2.

Due to the reciprocating motion of the plunger 50 revolutions, the fuel pressurized within the plunger/four-rel 21 is supplied to the diesel engine 2 via the delivery pulp 22.

Although only one delivery pulp 22 is shown in FIG. 1, the same number of delivery pulps as the number of air passages of the diesel engine 2 are provided, and from these delivery pulps, diesel The configuration is such that fuel is injected and supplied to each cylinder of the engine 2, respectively.

A control sleeve 8 is attached to the granger 5, and the position of the control sleeve 8 can be adjusted by an actuator 9 connected to the control sleeve 8, thereby adjusting the injection amount. has been done.

In order to control the actuator 9 based on the current operating conditions of the diesel engine 2 and to control the speed of the diesel engine 2 in accordance with the required speed regulating characteristics, data indicating various operating conditions of the diesel engine 2 are used. A control itt+ unit 4 is provided which operates in response to.

In this embodiment, the diesel engine 20 operates in response to the timing I9 pulse P from the timing I4 shift generator 11 mounted on the crankshaft lO of the diesel engine 2.
A speed detector 12 that outputs a speed signal s1 indicating the rotation speed
, an accelerator signal s3 indicating the depression t of the accelerator signal 13
a water temperature detector 14 that outputs a water temperature signal Ss indicating the temperature of the cooling water of the diesel engine 2;
5 is provided. The speed signal S1, the accelerator signal S, and the water temperature signal SmFi are input to the interface circuit 16, converted into digital data, and input to the control unit 4 as data DtlD indicating the engine operating conditions at the time. There is. System @22, To4
The microcombination unit 17 includes an input data DB a DB.
* Based on the current diesel engine operating conditions determined according to the DB, reference is made to the required speed regulating characteristic data stored in the microcombi controller 17 in advance to determine the current operating conditions. A suitable target injection amount is calculated. This target injection amount is further converted into target position data indicating the target sleeve position required to obtain the target injection amount based on data indicating the relationship between the position of the control sleeve 18 and the current injection amount. be done.

control sleeve 8, control sleep 8
A position sensor 18 is connected to output a position signal S4 indicating the actual position of S.
4 is also converted into corresponding digital data D4 by the interface circuit 16, and the data D4 is transmitted to the controller =,)
4 is entered. According to the difference between the target position data and the data D4, the control sleeve 8 is positioned at the position indicated by the position i.
Outputs the control signal S @ of 8 tatami for N rice, and outputs the control signal B
It is amplified by the sFi drive circuit 18 and applied to the actuator 9 as a drive coefficient Se.

Therefore, the position of the control sleeve 8 is controlled in a closed loop according to the engine operating conditions at the time, and the speed gtwt+ of the diesel engine is electronically controlled in accordance with the speed governing characteristic. In FIG. 1, the reference numeral 19 indicates a battery.

- One terminal 19m of the terminal 19 is grounded, and the tenth terminal 19b
is connected to the control unit 4.

The control unit 4 includes 4 in each part of the control system.
A function for detecting the presence or absence of failure 1 and displaying it is provided, and a control calculation for displaying failure detection 1 and the above-mentioned calculation for controlling the injection amount are provided in the control unit 4. Executed by Microcombi, -Yu17,
The presence or absence of a fault and its contents are indicated by turning on or off the lamp 200, which is an optical display means, in other words, by blinking as will be described later.

FIG. 2 shows a flowchart of an example of a program executed by the microcombiner 17. When the program starts, Stella 7''a is initialized and then a predetermined first diagnostic item is checked to see if it is normal or abnormal (step b). When it is determined, a predetermined process 1K is performed in Stella fa, and a flag F1 indicating that the check result of the first diagnostic item is abnormal is set at this point.
is erected. If the determination result in step b is normal, processing 21 is executed (step d).

In step d, the 7th ladder F1 is reset, and after step Fid is executed in this way, the second... Third
The diagnosis items of ... are checked one after another, and treatment is taken according to each result.Finally, the presence or absence of a failure in the 1gn* disconnection item is checked (step), and treatment is taken according to the determination result. 11 is performed (step, ft, or step g) s Diagnosis items on Honso's side are the following 6 predetermined
This is the i-th item.

1st diagnosis item Acunal signal S, YES → Abnormal level is not in the specified pronation. No→Normal 2nd #disconnection item Level of water temperature signal S3 YES→Abnormal level is above a predetermined value. No → Normal [3m disconnection item Power supply voltage is specified YES → Outside the abnormal range. NO→Normal 4th diagnosis item Repeat speed signal S, YES-+Abnormal signal never changes after power ON NO→Normal 5th diagnosis item 1411 position data obtained in control unit 4 YES→Abnormal , Data NO→Difference from normal D4 is longer than a predetermined time and is greater than a predetermined value. @6 Diagnostic item Repeat position signal S4 YES-+Abnormal If an abnormality is detected in each of these diagnostic items, each flag Only the corresponding flags among F1 to F. are set.

Based on these flags F1 to F, (D fall state), it is determined whether or not there is a failure (Stella fh). If even one of these flags is set, step IK advances. If no fault is detected in the fourth diagnosis 'XJ, the main control program for controlling the injection amount is executed after turning off the lamp 20 in step n.
Step j), a control signal S- is output.

If the determination result in step h is YES, step, de1
, whether or not Lande 20 for 1 display is being displayed.
, and if the Lande 20 is not being displayed, the diagnostic results are displayed based on the above-mentioned flag (Ste, Dek).
), if the lamp 20 is displayed, the status, de-LKA,
A serious failure that requires the engine to stop operating;
Or a check is made to see if a failure has occurred.
In this embodiment, the first. If at least one of the 5th and 6th cutting items Vca is present, it is assumed that a serious disturbance force 1 has occurred, and the engine control is stopped (STE, DEM), while lE2, @3 and 4th If there is an abnormality in the reference item,
A controlled stop is not performed, the main II control program is executed, and engine operation continues.

Next, the failure display 1lIlj by the control unit 4 will be explained. As described above, the diagnostic results of the first to sixth diagnostic items are notified to the sweeper by flashing the lander 20. It is used only when it is determined that it is, that is, when the determination result of Ste and Deh is YES, and when all of the above diagnostic items are normal, Lande 20 disappears up to t.

If the determination result in step h is ygs, the land 20 will sequentially display whether each diagnostic item is normal or not. This display form is shown in FIG. The display by the Lande 20 is started after the predetermined turn-off period TO has elapsed, and is displayed in time slots T1 e each having a time length T for the first to seventh diagnostic items.
T@r...T. is given. Each times a
y) A light-off period of a predetermined length Tb is provided between Ts and T6, and this time length Tb is longer than the period TO so that it can be distinguished from the rP lamp of the period To.
is set to a length different from the length of .

The lighting state of the rande 20 in each time slot T1 to T is determined by the state of the flags F1 to F. For diagnostic items for which a malfunction has been detected by the flag, for example, a dotted line at the time slot Ts As shown in the figure, the light flashes repeatedly in short cycles. On the other hand, at the time o 1++ ) corresponding to the diagnostic item determined to be normal as a result of the diagnosis, the land 20-1>E is in a continuous lighting state. This series of display operations is repeated in the manner shown in the diagram until there are no more secondary locations. The mode of blinking of the land 20 corresponding to "Normal", "N" and "N" is not limited to the above embodiment, and may be set to other modes.

Therefore, after the predetermined lights-out period To has elapsed, the operator
A series of six lighting conditions of the lamp 20 are monitored, and a short wi
By knowing how many times the blinking hole has occurred in JA8, it is possible to know in which of the predetermined diagnostic items 6':) a failure has occurred. In this way, the location of one failure and the fact of the failure are displayed using one lamp and without using complicated I# turns, so if you know the order in which to check the diagnostic items, you can
IK can also easily check the late tag location.

If any of the diagnostic items is determined to be normal, the lamp 20 does not light up at all and remains off, but a failure check is always performed. Therefore, when the entire control device is in a transient operating state, such as immediately after the power is turned on, and it is not a failure, but the E of each part is not within the predetermined level range, the Lande will When a failure indication is performed, the signal becomes K. However, once it enters a steady state, each department will be in a normal state one after another, the failure indication letters S will change to a normal display state one after another, and when the displays for all diagnostic items will be in a normal display state, the lamp 20 will turn off. It turns out.

Furthermore, as can be seen from the flowchart in FIG. 2, when the lamp 20 is displaying and the control is not in a stopped state, the display routine does not wait while the rung display is being performed. During the standby time, the main control is performed, so the engine is controlled and the current failure location is determined. Can be checked.

In the above embodiment, a case has been described in which the failure display device f1t of the present invention is applied to a t-control type fuel injection device for a diesel engine, but the present invention is not limited to the above embodiment, and other The same can be applied to the radiation display of any train control device.

According to the present invention, as described above, only one optical display member such as a lamp, a light emitting diode, or an LCD is used, and normal and normal indicating the diagnosis results of predetermined diagnostic items are displayed in a predetermined order and in advance. Since the display is configured to be displayed using a predetermined simple on/off/# turn, anyone can easily understand the displayed content, and it has excellent effects of being economical and easy to use.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronically controlled fuel injection system equipped with a failure display device according to the present invention.
Figure 2 shows the control unit 22 shown in Figure M1.
FIG. 3 is an explanatory diagram showing a no-turn failure indication. DESCRIPTION OF SYMBOLS 1... Electronically controlled fuel injection device, 2... Diesel engine, 4... Control meter, 12... Speed detector,
14...Accelerator detector, 15...Water temperature detector, 1
7...W (black combination, -ta, 19...power battery,
20...Lamp. Patent applicant: Diesel Equipment Co., Ltd. Agent: Patent attorney: Akira Takano, 3rd WJ

Claims (1)

[Claims] 1. Means for determining whether each of a plurality of predetermined diagnoses means for determining whether or not the diagnosis item is detected; an optical display means; and a means for determining whether or not the diagnosis item is normal when at least one of the diagnosis items is determined to be abnormal; and a means for displaying the optical display means by turning it on and off, and displaying normal and normal conditions according to predetermined on and off/# turns.*gl
Failure display device for i control device.