JPS611300A - Control display unit of device with engine - Google Patents

Abstract

PURPOSE:To obtain a simple and compact control display unit by detecting the output current of an AC generator, inputting it to a calculator, displaying on a display unit, and controlling a throttle valve. CONSTITUTION:A calculator 32 inputs AC voltage information (c), frequency information (d), AC current information (e) from an AC output winding 30 of a generator, DC voltage information (f), DC current information (h) from a DC output winding 38, output information (j) of a fuel insufficient sensor, an oil insufficient sensor (k), and displays the information on a liquid crystal display plate 15 and alarm lamps 16-18. A solenoid 33 of an electronic control governors is controlled on the basis of the current information to rotate the throttle lver. Thus, the control display unit which can be facilitated with a simple and compact construction can be obtained.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention relates to a portable generator having an AC generator, a pump,
The present invention relates to a control display device for engine-equipped equipment such as a compressor, a chain saw, and a lawn mower 41.

(Object of the Invention) To provide a control display device capable of displaying information on generated alternating current to notify a user and simultaneously controlling an engine, and having a commercial and compact configuration and easy to put into practical use.

(Structure of the Invention) The present invention provides an engine-equipped device having an alternating current generator, which includes an arithmetic circuit that detects a current from the alternating current generator with an alternating current detection device and inputs the detected current as alternating current information. The engine H1 is characterized in that it has a display device that displays the AC current information converted in the above as a load current value, and a throttle control device that operates according to the AC current information converted in the arithmetic circuit. (The control display is ￥ position.

(Example) FIG. 1 is a perspective view of a portable generator employing a control display device according to the present invention, in which a generator main body 2 is fixed to a pipe frame 1. Generator body 2shi 1: Generator 8
, a fuel tank 4, a starter 5, an engine (not shown), etc., and a control spring/l/6 of the generator main body 2 is fixed to the frame 1. Control spring/L/6 has DC output terminal 7
, DC circuit breaker 8, AC output socket 9,
AC circuit breaker 11O, throttle knob 11
, pilot run 112, engine strap inch 1
8 and a display liquid crystal panel 14.

As shown in figure M2, which is an enlarged view of the liquid crystal spring/v14,
Below the middleman's liquid crystal display panel 15, there are arranged on the left a fuel shortage warning lamp 16, a fuel shortage warning lamp '17, an overload warning lamp 18, and a button switch 19 for changing the display mode. Further, on the surface of the control panel 6 above the display board 15, characters 20 indicating various display modes are printed, and an instruction mark 21 in the display board 15 indicates the characters 20. The illustrated state shows that the AC ixi pressure during power generation is 120 volts/L'l-.

A mobile device like the one mentioned above! An electric circuit according to the conceptual diagram shown in FIG. 3 is installed in the L machine. In Figure 8,
One end of the alternating current output winding 30 of the generator is connected to one connection terminal of the circuit breaker 10, and the other terminal of the circuit breaker 10 is connected to one output terminal of the output socket 9. In addition to the output winding 80, y1: J IJ-, ノ!
It is connected to the other output terminal of the output socket 9 via the rent transne 31.

- There is a branch between the force output winding 30 and the breaker 10, and there is also a branch between the groups 1/-, /JIO and the output socket 9, and the voltage between both ends of the breaker 100 is used as an overload alarm signal by the arithmetic circuit 82 (CP). (orally). The above-mentioned overload warning signal is converted into No. 3 in the arithmetic circuit 82, and activates the overload warning lamp 18 (blinking), and also causes the display on the display board 1-50, which will be described later, to blink. Furthermore, the voltage between the end of the breaker 10 on the winding 30 side and the end of the socket 9 on the transformer 31 side is input to the circuit 32 as alternating current information and frequency information, and is digitized within the circuit 32. When in the specified mode corresponding to fl, image information or if, it is displayed as a number on the liquid crystal display board 15.The alternating current information detected as a current by the current sensor 7.31 is displayed in the arithmetic circuit 32 as an alternating current information display [3]. At the same time, it is converted into a control signal for the throttle control solenoid 33 using an external force.

The AC RIE information display signal is displayed as a number on the liquid crystal display panel 151C in the corresponding designated mode, and the control signal for the solenoid 33 is used to control the solenoid 33 of the multiplex control type governor as shown in FIG. In FIG. 4, the throttle lever 34 is configured to be fully open at the solid line position and fully closed at the imaginary line position. Therefore, by fully rotating the lever 34, the engine speed can be freely changed. The tip of the lever 34 is connected via an iron core 35 to a governor spring 87 whose one end is fixed to the governor case 36 (or a speed regulating lever for changing the number of times), and the tension of the spring 37 causes the lever to move. The tip of 34 is biased in the direction of arrow X□ force. The solenoid 38 is wound around the iron core 85 at intervals, and by moving the iron core 85 in the reverse X1 direction K (i) depending on the magnitude of the voltage applied to both ends of the solenoid 33, the throttle lever 84 is moved. The rotation can be controlled.Here, the control signal for the solenoid 33 above is used to control the magnitude of the voltage applied to the solenoid 33. K
YI is starting to work. That is, when the load connected to the output socket 9 (Fig. 3) is normal, the governor shown in Fig. 4 performs the throttle control function to keep the engine speed constant. 6. When the opening and closing of lμ is controlled, but there is no load. J operation circuit 8
Control signal 75 converted in step 2: Soleno (1") moves to 8 B, rotates lever 84 to the fully closed side, and puts the engine into an idling state.

Next, as shown in FIG.
．． 40 and a shunt 41 to one output terminal of the output terminal 7.

Further, the medium heat portion of the output winding 38 is connected to the other output terminal 1 of the output terminal fIv7 via the circuit breaker 8. On the other hand, the voltage between both ends of the ski kit breaker 8 is input to the calculation circuit 32 as an overload alarm signal, and the overload external signal is input to the calculation circuit 32.
The signal is converted to 1h within the system, and the overload warning lamp 18 is activated and the display on the display board 15 is made to blink. Furthermore, the voltage between the central part of the winding 88 and the terminal/I/7 on the side of the shunt 41 is digitized as DC voltage information in the arithmetic circuit 32, and displayed as a number on the liquid crystal display board 15 in the direct IT pressure mode. , it is used as a DC constant voltage power source for the arithmetic circuit 32, the solenoid 88, etc.

The slight DC' DC divided by the shunt 41 is DC W,
The information is input to the arithmetic circuit 32 as flow information, digitized, and displayed as numbers on the display board 15.

On the other hand, a signal from the fuel shortage sensor in the fuel tank is input to the calculation circuit 32 as a fuel shortage alarm.

In the circuit 82, the continuation IJ:r of No. 1n is counted, and if the signal continues for 10 seconds, for example, the signal is converted and the fuel shortage warning lamp 17 is activated, and the display on the display board 15 flashes. let Further, the number from the engine oil shortage sensor installed in the engine's oil pan can be inputted to the arithmetic circuit 32 as an oil shortage alert. The arithmetic circuit 32 counts the duration of the signal, and if the signal indicating an oil shortage continues for, for example, two seconds, the information is processed as follows. In other words, the oil shortage belief is converted and the oil shortage alarm lamp 1 is activated.
At the same time as 6 is activated, the signal is converted into text and displayed on the LCD 15 as, for example, ``O-engine LJ''.Furthermore, the engine's primary ignition circuit is grounded due to lack of oil, and the engine automatically starts. The above-mentioned "01L" display erases the display in the instruction mode and is forcibly displayed on the display board 15 regardless of the indication mode.

Next, the effect will be explained. When the generator shown in FIG. 1 is started, as shown in FIG. 2, numbers 0 to 9999 are displayed on the crystal display board 15, and an instruction mark 21 pointing to a character 20 is displayed at the top.

The state shown in FIG. 2 shows that the AC voltage being generated is 120 points. This is the AC output winding 3 in Figure 8.
The AC voltage information obtained from the output of 0 is digitized in the arithmetic circuit 32 and displayed as numbers on the display board 15. Here, by pressing the button switch 19 shown in FIG. 2, the display mode can be changed. That is, switch 19 is set to 1.
Each time the button is pressed, each piece of information digitized in the arithmetic circuit 82 of FIG. 8 is selected by the display control circuit built into the circuit 82. Then, among the modes shown in FIG. 2, AC voltage information, AC current information, DC voltage information, DC current information, and AC frequency information are displayed one after another on the display board 15 in order from the left, and finally a preliminary mode is displayed. After that, it returns to AC voltage display mode. The indication mark 21 changes its display position along the upper side of the display board as the mode changes, and informs the user what information the currently displayed number means.

On the other hand, if an overload occurs and circuit breaker 10 or breaker 8 in FIG. 8 is opened, breaker 8
, 10 causes an overload alarm signal (
light warning information) is input into the arithmetic circuit 82, converted into a signal, lights up (or blinks) the overload warning lamp 18, and acts on the display control circuit in the circuit 32 to display the display board 1.
The display above 5 blinks to notify the user of the occurrence of a minor abnormality and to make the user understand that the abnormality is due to overload.

When a fuel shortage signal (mild warning information) is input from the fuel shortage sensor to the arithmetic circuit 82, the signal duration is first counted in the circuit 82.

For example, when the signal duration reaches 10 seconds, the signal is converted and the fuel shortage warning lamp 17 lights up (or blinks).
At the same time, the numbers displayed on the display board 15 are made to blink to notify the user of the occurrence of fuel shortage. In this case, the alarm lamp 17 etc. is not activated until after the signal duration time has been counted and the signal has continued for a predetermined period of time, so there is no possibility that a simple fluctuation in the fuel level will cause an alarm to be issued. There is no inconvenience.

Also, the engine oil shortage sensor indicates a lack of engine oil.
(warning information of M degrees) is input to the calculation circuit 82, the signal duration is first set to 2 seconds, and if the signal continues for 2 seconds, The signal is converted and the oil shortage warning lamp 16 lights up (or flashes), and at the same time, it works on the display control circuit in the arithmetic circuit 32 to erase the above-mentioned normal information from the display board 15 and display the characters "0ILj" instead. In this case, the engine is stopped by further grounding the engine's primary ignition circuit.

On the other hand, in the alternating current information line arithmetic circuit 82 detected by the current controller 81, the alternating current is digitized for display on the display board 15 and converted into a signal for the operation of the solenoid 88. Here, for example, when the equipment connected to the output socket 9 (e.g., electric trimmer, WL air plane, etc.) is in a stopped state and the load is zero, the current is detected by the lance 31 and the current is zero. It is. At this time, the current flowing through the solenoid 38 in Fig. 4 is at its maximum, and the iron core 85 is biased in the opposite x8 direction due to the magnetic field generated in the solenoid 38, overcoming the force of the gunnath 1 ring 8 f 0 and moving the thrower. The A/L/bar 84 rotates to the fully closed position,
The engine will be in an idling state. Then t=gtri/
When a load is applied by operating the I/etc.
The current sensor 31 in FIG. 3 detects alternating current information depending on the magnitude of the load, and the arithmetic circuit 11iii82 digitizes the information for display. At the same time, this current information is 13
The electronically controlled governor, shown in No. 4-, performs the function of the original governor, that is, the function of controlling the opening and closing of the thrower l-/L/ in order to keep the rotation of the engine constant.

In the above example, 47! ! In addition to being able to easily display multiple pieces of normal information on a device, it also provides information on what to do in the event of a malfunction in the operating condition.
By displaying the warning information and changing the display format depending on the importance of the warning information, even a summer user without prior knowledge can easily understand the importance of the problem. can.

(Effect of the invention) The output from the alternating current generator (the alternating current output winding 80 is a part of it) is detected by an alternating current detecting device (for example, the Karen F Tobuns 81).
), and a display device (e.g. display liquid crystal spring/1/14) that displays the alternating current information digitized in the arithmetic circuit as a load current value. In addition, since it has a throttle control device (e.g. throttle control solenoid 88) that operates based on the alternating current information converted within the arithmetic circuit, the alternating current information obtained by the alternating current detecting device can be displayed. CO1! This has the advantage that it is possible to provide a control display device that notifies the user and can simultaneously control the engine based on the alternating current information, and that is simple and compact in construction and is easy to put into practical use.

(Another Embodiment) In carrying out the present invention, it is necessary not only to use the direct current shunted by the shunt 41 in FIG. 8 for display purposes, but also to use the solenoid It may be used for controlling 88. In place of the current sensor 31, a current detector such as a shunt may be used to detect the alternating current information.

FIG. 5 shows a case where the resistor 81a is used as a current shunt for one time. In this case, the voltage drop across the resistor 81a is input to the arithmetic circuit 82 as current information. That is, the resistor 81a (
The current flowing in the socket 9 can be determined by measuring the voltage drop (R) due to the wL current flowing through the socket R). Furthermore, the signal conversion used to control the arithmetic circuit 32 may be either analog or digital. A pulse motor or a DC motor may be used instead of the solenoid 88. An example using a pulse motor is shown in the sixth example.
An example in which a DC motor is used is shown in FIG. Oi/! There is no need to provide a circuit to ground the ignition primary circuit in the event of l shortage! - Notification information is not limited to overload alarms, etc., but also, for example, air purifier clogging alarms, etc.
The display device that may be used to warn of engine overheating is not limited to the liquid crystal spring/L'14, but may also use a light emitting diode, audio, or the like. Further, the contents handled may not be digitized, but analog quantities may be displayed. LCD spring A
/14 is not limited to one, but can be implemented in the same way when there are two or more, and the display may be in Japanese such as katakana,
A stylized display may also be used. If you have a circuit that stops the engine by grounding the primary ignition circuit,
It is also conceivable to install a battery in advance and use the battery as a power source for display after the engine is stopped.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a portable generator employing a control display device according to the present invention, and FIG. 2 is a front view of the vicinity of the liquid crystal spring μ.
Figure 8 is a conceptual diagram of a control display device according to the present invention, Figure 4 is a schematic diagram of an electronically controlled governor, Figure 5 is a conceptual diagram of another embodiment, and Figures 6 and 7 are different embodiments. FIG. 14...Display liquid crystal spring /I/ (an example of a display device), 30...Output winding for AC (part of an AC generator), 31...Power V torque (an example of an AC current detection device), 82...Arithmetic circuit, 88...Throttle control solenoid (an example of a slot! control device) Patent applicant: Kawasaki Heavy Industries, Ltd. 肂") Representative patent attorney *i,a*'-,
. Figure 5 Figure 6 Figure A

Claims (5)

[Claims] (1) In engine-equipped equipment that has an AC generator,
It has an arithmetic circuit that detects the current from the alternating current generator with an alternating current detection device and inputs it as alternating current information, and has a display device that displays the alternating current information converted in the arithmetic circuit as a load current value. A control display device for engine-equipped equipment, further comprising a throttle control device operated by the alternating current information converted within the arithmetic circuit. (2) A control display device for engine-equipped equipment according to claim 1, wherein the alternating current detection device is a shunt. (3) The control and display device for engine-equipped equipment according to claim 1, wherein the throttle control device is a pulse motor or a DC motor. (4) A claim that uses a digital circuit to input alternating current information to the arithmetic circuit, convert the alternating current information into a load current value within the arithmetic circuit, and operate the throttle control device based on the alternating current information. A control display device for an engine-equipped device according to item 1. (5) The scope of the patent claims that the throttle control device employs a throttle control solenoid that controls the opening and closing of the throttle to maintain a constant rotation of the engine under normal load, and closes the throttle and performs idling operation under no load. The control display device for engine-equipped equipment according to any one of the first, second, and fourth items.