JPS59157796A - Counter with alarm for engine - 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] This invention relates to an improvement in an instrument panel with an engine warning device.
More specifically, the present invention relates to an instrument panel with an engine warning device that can provide an appropriate warning to the driver based on the dangerous range of engine operating state quantities such as oil pressure and water temperature in accordance with the operating state of the engine.

-In recent years, engine speed, lubrication oil pressure and temperature.

Some instrument panels that display engine operating state quantities, such as water temperature, are equipped with a notification device for determining whether each state quantity is in a dangerous state.

In this conventional gazette instrument panel, in order to determine whether or not the state quantity of the engine is in a dangerous state, a switch is used that turns on and off when the state quantity exceeds a set value. When the amount entered the dangerous range, a warning lamp on the split plate was lit to notify the driver. However, the conventional instrument panel with alarm device has the following practical problems.

■ Since the engine operating state quantity is judged based on binary values of safe or dangerous, the stepwise state of the state quantity is unknown.

■ Gradual risk assessment is difficult to implement because it increases the number of sensors and switches, which increases costs and installation space.

■ Along with the recent trend toward lighter and more compact engines, auxiliary equipment such as lubricating oil pumps are designed to keep margins low, so if you want to judge whether or not they are dangerous based on one point, , the danger judgment value is set low and the alarm device is activated frequently.

- Some specific engines intentionally raise the water temperature in the low-speed rotation range to a level higher than the dangerous water temperature under normal operating conditions, and the above-mentioned conventional devices cannot be applied to such engines.

An object of the present invention is to increase the amount of means for determining engine operating state quantities, and to make detailed determinations of engine operating state quantities, thereby improving safety during engine operation. An object of the present invention is to provide an excellent engine instrument panel with a warning device.

To achieve the above object, the engine instrument panel with warning device of the present invention is characterized in that the display of the danger range of engine state quantities such as oil pressure and water temperature is made variable in accordance with the operating state of the engine.

The present invention will be described in detail below using the drawings.

FIG. 1 is an explanatory diagram showing the configuration of an instrument panel with an alarm device for an engine according to the present invention, and FIG. 2 is a block diagram specifically showing the configuration using blocks.

The ennon 1 includes, for example, a hydraulic pressure sensor 2. oil temperature sensor 6,
Charging pressure sensor 4. Engine operating state quantity sensors 1D such as an exhaust temperature sensor 5, an engine rotation speed sensor 6, and a cooling water temperature sensor 7 are provided, and these sensors are connected to the control unit 20. 11 will be described in detail later. This invention is an instrument panel body with an alarm device.

The operating state quantity of the engine 1 measured by the state quantity sensor 10 is transmitted to the control unit 2 as shown in FIG.
0 A/I) converter 21 and I/10 port 22 to be input to the CPU 23 via a data bus 24. This control unit data is replaced with the previous data at predetermined intervals and temporarily RA
At the same time, this data is output from the data bus 28 to the display device 12 of the splitter board main body 11 via the driver 27 for driving the splitters.

At the same time, the CPU 23 has a function of determining the operating state of the engine 1 based on the data from the state quantity sensor 10, and selects from the ROM 26 dangerous range data of each operating state quantity of the engine according to this operating state. be able to. This CPU 23 is connected to the display device 1.
2, this dangerous area data is output and displayed together with the engine operating state quantity.

Furthermore, the CPU 23 has a function of comparing the engine operating state quantity data stored in the RAM 25 with the dangerous range data of each operating state quantity selected from the ROM 26, and determines whether the operating state quantity data is in the dangerous range. If so, an alarm signal will be generated. The alarm signal is input to the alarm device 16 of the instrument panel main body 11 via the data bus 29, and
Communicate abnormalities to the driver.

FIG. 3 shows an instrument panel 60 of one embodiment of the instrument panel main body 11. The instrument panel 60 of this embodiment is for a small boat, and a clock 61 is provided on the instrument panel surface.

Abnormal location monitoring device 65 and state quantity display device 66.

67, a buzzer 68, etc.

Figure 4 is an enlarged view of the state quantity display 66 shown in Figure 3, and the boost pressure gauge 14, oil pressure gauge 15, oil temperature gauge 16, and water temperature gauge 17 are arranged on this display 66. Each instrument consists of liquid crystals, fluorescent display tubes, etc.

On each display side of this invention, the engine operating state quantity is bar 8.
At the same time, the danger range of each instruction value is displayed on the zone bar 9 and beside the display area of the bar 8 while changing according to the operating condition of the engine.

And, in this invention, when the graph of the bar 8 overlaps the zone par 9 and the engine operating state quantity enters the dangerous range, the bar 8, zone bar 9, etc. of the display meter blinks and an alarm is generated. or the buzzer ~68 is turned on.
It is designed to notify the driver of an abnormality in the engine.

Fig. 5 shows a part of an embodiment of a program for operating a needle with an alarm system of an engine according to the present invention. The program shown is only for water temperature and lubricating oil pressure.The same program as shown in Figure 5 is also shown for other engine operating state variables such as gamma lubricating oil temperature, exhaust temperature, engine speed, and boost pressure. Indeed, they are prepared consecutively before and after this program.

In the apparatus of the present invention, when the program reaches the area shown in FIG. 5, the control unit 20 first determines whether or not the fresh water cutting device is operating (step 2). Next, if the fresh water cut device is ON, set the cooling water temperature danger range display to 115°C to MAX, and if it is OFF, set this to 9
Set it to 5°C-MAX and display it in zone pars 9a and 9b at water temperature 1i17 in Figure 4 above (step
[phase]). If the fresh water cut device is turned on and the cooling water temperature exceeds 115°C, and if the fresh water cut device is turned on and the cooling water temperature exceeds 115°C,
If the cooling water temperature exceeds 95°C in FF, that is,
When the bar 8 on the water temperature gauge 17 enters the area of zone par 9 (step ■, [phase]), the bar 8 and zone par 9 are flashed to display an alarm signal, and the buzzer 68 is sounded to alert the driver. Communicate this (steps ■, ■). At this time, the monitor device 35 of the training equipment 60 may be used to light up the simp or the like at the abnormal location.

Further, if "NO" is obtained in step 0, that is, if bar 8 does not overlap zone par 9 in water temperature network 17, step 0. Bar 8 in [phase]. Alarm display and buzzer 68 by zone par 9 and monitor device 35
Stop the operation and move on to the next step.

The above is the program of the control unit 20 for the water temperature gauge 17. When the above program is completed, the control unit 20 executes the program for the hydraulic side 17, that is, the program for the lubricating oil pressure.

In this program, the control unit 20 first determines the engine speed (step 2).

■). If the engine speed is less than 60 rpm, proceed to step (2), turn on only the number bar 9C of the hydraulic network 15 shown in FIG.
If so, move to step [phase] and zone par 9c, 9d
is turned on, and if the speed is 800 rpm or more, the process moves to step [phase] and all sea 7 bars 9c, 9d, and 9e are turned on.

Step ■, 0. (2) is for determining whether or not the highest bar 8 of the oil pressure gauge 15 has fallen to the dangerous range within each of the engine speed ranges and overlapped with zone par 9. Then, if the result is 'YES' at each step ■, o, ■, and the lubricating oil pressure is in the danger range, step [phase],
Next, proceed to step 0, and set bar 8. as in the case of the cooling water temperature. Zone par 9. Monitor device 65. Buzzer 38
This is used to notify the driver that the lubricating oil pressure has fallen into a dangerous range. -! , each step■.

If NO” at O20, step 4, (4■
to stop the alarm.

The operation of the engine instrument panel with warning device according to the present invention has been explained above using two engine operating state quantities, cooling water temperature and lubricating oil pressure, as examples. The device can correctly determine whether or not these operating state quantities have entered the dangerous range, depending on the operating state of the engine.

As explained above, in this invention, on the instrument panel with an engine warning device, the danger range display of state quantities such as engine oil pressure and water temperature is varied according to the engine operating state, and the engine operating state quantities are Since the structure is configured so that an appropriate warning is transmitted to the driver only when the engine is in a dangerous range, it has the great effect of improving safety during engine operation.

Furthermore, although the device of the present invention makes detailed determinations of engine operating state quantities, the number of determination means and sensors does not increase, so there is an advantage in that an increase in costs can be prevented. .

[Brief explanation of the drawing]

Fig. 1 is a design drawing showing the configuration of an instrument panel with an alarm device for an engine according to the present invention, Fig. 2 is an explanatory drawing specifically showing the configuration of the device shown in Fig. 1 using blocks, and Fig. A front view of the instrument panel of an embodiment of the instrument panel main body of the instrument panel with alarm device for an engine according to the invention, FIG. 4 is a front view showing an enlarged state quantity display of FIG. 3, and FIG. 1 is a diagram partially showing an embodiment of an operating program for an instrument panel with an alarm device according to the invention; FIG. DESCRIPTION OF SYMBOLS 1... Engine, 8... Bar, 9... Zone bar, 10... State quantity sensor, 11... Instrument panel body, 1
2... Display device, 16... Alarm device, 15... Oil pressure level 1.17... Water temperature H+, 20... Control unit, 21... A/D converter, 22...
I/10 port, 23...cpu, 24°28, 2
9...Data bus, 25...RAM, 26...RO
M, 30...Instrument panel, 35...Monitor device, 36
, 37... State quantity display, 68... Buzzer. Patent Attorney Makoto Ogawa - Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita

Claims (1)

[Claims] a) means for detecting engine operating state quantities such as engine speed, oil pressure, water temperature, etc.; b) means for displaying engine operating state quantities; C) means for detecting engine operating state quantities in a dangerous range. Display means, d) Temporary storage means for reading out the engine operating state quantity at regular intervals and storing it by replacing it with the previous state quantity, e) Danger range of the engine operating state quantity corresponding to the engine operating state. means for storing setting values; f) means for determining the operating state of the engine from the amount of operating state of the engine; g) selecting a dangerous set value for the amount of operating state of the engine from the storage means in accordance with the operating state of the engine; h) means for replacing this with the previous dangerous range set value indicated by the display means; h) comparing the engine operating state quantity stored in the temporary storage means with the dangerous range set value at that time; An instrument panel with an engine warning device, comprising: means for generating a warning signal when the engine exceeds a dangerous set value; l) means for communicating to the driver that the engine is in a dangerous condition by means of the warning signal; .