JP2001003777A - Internal combustion engine drive generating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To predict that an engine is stopped through completion of charge of a battery, in an internal combustion engine drive generating device to charge a battery. SOLUTION: This device comprises an engine starting control part to perform starting operation of an internal combustion engine 1 when a state that the terminal voltage of a battery 4 is reduced to a value lower than a set starting voltage is continued during a predetermined starting decision time; a starting preliminary announciator 107 driven when starting of an internal combustion engine is preliminarily announced; a starting preliminary announciator driving circuit 106 to drive the starting preliminary announciator 107 in prior to starting of an internal combustion engine when it is detected that the terminal voltage of the battery 4 is decreased to a value lower than a starting voltage; and an engine stop control part to stop an internal combustion engine when a state that the number of revolutions of an internal combustion engine is reduced to a value lower than the number of stop revolutions is continued for a set stop decision time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an internal combustion engine driven power generator for charging a battery with the output of an AC generator driven by the internal combustion engine.

[0002]

2. Description of the Related Art An internal combustion engine-driven power generator for charging a battery with the output of an AC generator driven by the internal combustion engine is capable of reducing a deviation between a terminal voltage of a battery and a target terminal voltage to zero or an allowable range. There is provided a rotation speed control unit for controlling the rotation speed of the internal combustion engine so as to suppress the voltage below, and controls so as to keep the terminal voltage of the battery substantially at the target terminal voltage.

[0003] In this type of internal combustion engine drive generator,
To save fuel consumed by the engine, start the engine when it is necessary to charge the battery and stop the engine when the battery is fully charged.
It is preferable to perform stop control.

In order to perform such start / stop control,
Detecting the terminal voltage of the battery, and starting the internal combustion engine when the detected terminal voltage of the battery has decreased to a first set value indicating that charging of the battery needs to be started; It is conceivable to stop the engine when it rises to a second set value (> first set value) indicating that the charging of the battery is completed.

[0005]

However, when a rotation speed control unit for controlling the rotation speed of the internal combustion engine is provided so as to maintain the terminal voltage of the battery at the target terminal voltage,
When the second set value of the battery terminal voltage in the start / stop control is set to a value equal to or higher than the target terminal voltage of the battery, the internal combustion engine cannot be stopped and the battery may be overcharged. is there.

If the second set value of the battery terminal voltage in the start / stop control is set to a value lower than the target terminal voltage of the battery, the engine stops before the charging of the battery is completed. Therefore, there is a possibility that the charge of the battery becomes insufficient.

In order to solve the above problem, it is considered to detect the output current of the generator and stop the engine when the charging of the battery is completed and the output current becomes equal to or less than a specified value. However, since a current detection resistor or a current transformer is required to detect a current, it is unavoidable that the price is higher than when a voltage is detected.

A rotation speed control unit for controlling the rotation speed of the internal combustion engine so as to maintain the terminal voltage of the battery at the target terminal voltage is provided, and the engine is started when the battery needs to be charged, If the start / stop control for stopping the engine when the charging of the battery is completed is performed,
Although the internal combustion engine-driven power generator can be operated unattended for a long time, workers such as refueling the engine and checking the operating state of the device that becomes a load on the battery may be located near the internal combustion engine-driven power generator. May have come to In such a case, if the stopped engine is suddenly started, a loud noise generated when the starter motor rotation noise or the pinion of the starter motor meshes with the ring gear of the engine is suddenly generated unexpectedly, and the work in the vicinity is stopped. People may be surprised by this and an unexpected accident may occur.

Further, when the internal combustion engine is stopped, the stop of the engine is caused by the completion of the charging of the battery, or is caused by the occurrence of a problem such as a shortage of fuel. It may not be possible for an operator or the like to immediately discriminate between the two.

An object of the present invention is to control the start / stop of the engine without detecting the output current of the generator and without causing the battery to be undercharged or overcharged, thereby reducing the fuel consumption. When the engine needs to be charged and the engine is started, or when the battery is fully charged and the engine is stopped, this is predicted before the engine is started or stopped. It is another object of the present invention to provide an internal combustion engine driven power generation device capable of recognizing necessary preparations and a state of a control device.

[0011]

SUMMARY OF THE INVENTION The present invention comprises an internal combustion engine,
An alternator driven by the internal combustion engine, a battery charged by a rectified output of the alternator, and a deviation between a terminal voltage of the battery and a target terminal voltage is reduced to zero or less than an allowable range. The present invention relates to an internal combustion engine drive power generation device including a rotation speed control unit that controls the rotation speed of an internal combustion engine.

[0012] In the present invention, an engine start control section for starting the internal combustion engine when a state in which the terminal voltage of the battery is lower than or equal to the set start voltage continues for a set start determination time; A start-notification alarm that is driven when notifying that the internal combustion engine is to start, and a start-notification alarm that is driven prior to the start of the internal combustion engine when it is detected that the terminal voltage of the battery has fallen below the starting voltage. And a stop signal for starting the internal combustion engine when the state where the rotation speed of the internal combustion engine is equal to or lower than the set stop rotation speed continues for the set stop determination time. A control unit is further provided.

As described above, the terminal voltage of the battery drops to the set starting voltage (the voltage at which it is necessary to start the engine and start charging the battery), and this state is set during the set start determination time. An engine start control unit is provided for performing a start operation of the internal combustion engine when the engine is continued, and a rotation speed of the internal combustion engine is set to a set stop rotation speed (a rotation speed at which the engine may be stopped because charging of the battery is completed). If an engine stop control unit is provided to perform an operation of stopping the internal combustion engine when the state is reduced to the number of times and this state continues for the set stop determination time, the terminal voltage of the battery needs to start charging the battery. The battery can be charged by starting the engine when the voltage drops to a certain level, and the engine is started when the battery charge is completed and the engine speed drops to the stop speed. Because it can be stopped, the engine start / stop control is performed stably without using expensive current detection means such as a current transformer to detect the output current of the generator, thereby saving fuel consumption. Can be planned.

[0014] The engine start operation is performed when the state in which the terminal voltage of the battery has decreased to the start voltage has continued for the set start determination time, and the engine stop operation has been performed when the engine speed has decreased to the stop engine speed. This is performed when the state continues for the set stop determination time, so that when the terminal voltage of the battery falls below the starting voltage due to instantaneous disturbance, the engine starts and then stops immediately. It is possible to prevent unstable control such that the engine is stopped when the rotation speed of the motor becomes less than or equal to the stop rotation speed for a very short time due to an instantaneous disturbance, and then the engine is started immediately thereafter.

In the present invention, the engine is stopped when the detected engine speed is reduced to the set stop speed by detecting the engine speed, but the deviation between the battery terminal voltage and the target terminal voltage is reduced to zero. If the rotation speed of the internal combustion engine is controlled so as to keep the rotation speed at or below the allowable range, the rotation speed of the engine decreases as the charging of the battery progresses. , It is possible to prevent the battery from being in an insufficiently charged state due to the start / stop control of the engine. In the present invention, it is preferable that the stop rotation speed can be adjusted according to the magnitude of the load connected to the battery.
That is, when the battery load is small and the battery is unlikely to be in an insufficiently charged state, the stop rotation speed is set high, and when the battery load is large and the battery is likely to be insufficiently charged, the stop rotation speed is set low. In addition, it is possible to prevent unnecessary operation of the engine from being performed, thereby saving fuel consumption and reducing noise.

According to the present invention having the above-described structure, a start-notification alarm which is driven at the time of notifying that the internal combustion engine is started, and an internal-combustion engine which detects when the terminal voltage of the battery becomes lower than the start voltage. Since a start notification alarm drive circuit for driving a start notification alarm prior to the start of the engine is provided, a worker or the like near the internal combustion engine drive generator can foresee the start of the engine, and Can be prepared in advance.

Further, the start notice may operate for a very short time even when the terminal voltage of the battery falls below the instantaneous start voltage when an excessive load is applied, but the engine does not start in this case. Therefore, the load can be monitored by the short-time operation of the start notification alarm.

According to the present invention, the engine start control unit, the start notice alarm, the start notice alarm drive circuit, and the engine stop control unit are provided as described above, and the stop of the internal combustion engine is notified. A stop-notice-notifier that is driven at the time of stopping, and a stop-notification-notice-notifier driving circuit that drives the stop-notification-notice prior to the stop of the internal-combustion engine when it is detected that the rotation speed of the internal combustion engine becomes equal to or less than the stop rotation speed Are further provided to constitute the internal combustion engine driven power generation device.

As described above, the stop notice alarm and the stop notice alarm drive circuit for driving the stop notice alarm are further provided to notify the stop of the engine before the engine stops.
When the battery stop is completed and the stop warning is activated due to the engine speed dropping below the stop speed,
Since the engine is stopped after the stop determination time has elapsed, it can be confirmed that the control device is operating normally. However, if the engine stops due to a problem such as a shortage of fuel, the engine will stop before the stop notification alarm almost stops operating, so the engine may stop due to the normal operation of the control device. You can recognize that there is no.

The engine start control section includes a voltage detecting means for detecting a terminal voltage of the battery, a starting voltage setting means for providing a starting voltage which is a terminal voltage of the battery when starting the internal combustion engine, and a voltage detecting means. Command generation for generating a start command generation timer drive command when the terminal voltage detected by comparing the terminal voltage of the battery detected by the means with the starting voltage provided by the starting voltage setting means becomes lower than the starting voltage. Command for performing a timed operation for a set start determination time when the comparator for generating a start command and the comparator for generating a start command generate a timer drive command, and generating a start command when the timed operation is completed A start timer circuit, start means for starting the internal combustion engine when a start command is issued, and completion of start of the internal combustion engine based on the rotation speed detected by the rotation speed detection means. Whether it be configured by a and a start determination unit that resets the start command generation timer circuit when the start is determined is determined to be complete.

When the engine start control section is configured as described above,
As described above, the engine is started only when the state in which the battery terminal voltage is equal to or lower than the starting voltage continues for the set start determination time. An unstable control operation of the engine is not performed when the voltage becomes equal to or lower than the short-time start voltage less than the start determination time due to a disturbance.

By providing the above-mentioned starting judgment device,
Since the starting means can be continuously operated until it is confirmed that the engine has started, the engine can be started reliably. The present invention can also be applied to a case where a means for detecting the completion of the start and stopping the power supply to the starter motor is not provided on the starter side of the internal combustion engine.

[0023] Further, the above-mentioned start notice alarm, which is driven when it is detected that the terminal voltage of the battery detected by the voltage detection means has become equal to or lower than the start voltage, has a start instruction generation timer circuit which performs a timed operation. It is possible to continue the operation for a certain start determination time.

[0024] The engine stop control section includes a rotation speed detection means for detecting a rotation speed of the internal combustion engine, a stop rotation speed setting means for providing a stop rotation speed which is a rotation speed when the internal combustion engine is stopped, and a rotation speed detection device. A stop command for generating a stop command generation timer drive command when the detected rotation speed is equal to or less than the stop rotation speed by comparing the rotation speed detected by the means with the stop rotation speed given by the stop rotation speed setting means. When the generation comparator and the stop command generation comparator are generating a stop command generation timer drive signal, a timed operation is performed for a set time, and a stop command is issued when the timed operation is completed. A timer circuit for generating a stop command, a stop unit for performing an operation for stopping the internal combustion engine when the stop command is generated, and whether or not the internal combustion engine has stopped based on the rotation speed detected by the rotation speed detection unit. Determination to the internal combustion engine can be configured to include a stop determination unit that resets the engine stop timer circuit when it is judged to have stopped.

When the engine stop control unit is configured as described above,
Since the engine is stopped after the timed operation of the stop command generation timer circuit is completed, unstable control of the engine is performed when the engine speed falls below the stop speed due to instantaneous disturbance, as described above. No action is taken.

Further, since the stop judging device is provided, the stop means can be continuously operated until it is confirmed that the engine has stopped, so that the engine can be surely stopped.

As a stopping means for stopping an internal combustion engine using an ignition device driven by the output of the AC generator,
When a stop command is given by a push button switch or the like, an output of the generator (ignition power supply) is generated by the self-holding switch using a self-holding switch that maintains a conductive state while the AC generator is generating output. It is known that the ignition operation is stopped by short-circuiting some of the components of the ignition device to stop the engine.However, when such a self-holding type stop means is used, The stop determiner as described above can be dispensed with.

[0028]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a block diagram showing the overall configuration of an internal combustion engine drive generator according to the present invention. In FIG. 1, reference numeral 1 denotes an internal combustion engine, and an AC generator 2 such as a magnet type generator is attached to one end of an output shaft of the internal combustion engine.
The internal combustion engine 1 may be a gasoline engine or a diesel engine. The AC generator 2 includes a flywheel magnet rotor attached to an output shaft of the engine, and a stator fixed to a case or a cover of the engine. An AC voltage is generated from a generator coil provided on the stator. appear.
The output of the power generation coil of the AC generator 2 is supplied to the battery 4 through the rectifier 3. The battery 4 has an electric load 1
00 is connected.

Reference numeral 5 denotes an actuator that operates a fuel supply amount adjustment unit that adjusts the amount of fuel supplied to the internal combustion engine 1.
The actuator 5 is configured to operate a fuel supply amount adjustment unit such as a throttle valve using an electric motor or an electromagnet as a drive source, and adjusts the fuel supply amount by an operation amount according to the magnitude of the drive current supplied from the drive circuit 6. Operate the unit.

Reference numeral 7 denotes the rotation speed of the output shaft of the internal combustion engine 1 [r
pm] and a signal (voltage signal) V proportional to the number of revolutions
The signal VN is input to a differentiator 8, and the output Vd of the differentiator 8 and the output signal VN of the speed detector 7 are input to an adder 9. The adder 9 outputs a signal VN + Vd which is the sum of a signal VN proportional to the engine speed and a signal Vd = Kd (dVN / dt) (Kd is a differential control constant) obtained by differentiating the signal VN with time. It is output as a rotation speed detection signal. In this example, a rotation speed detector 7, a differentiator 8, and an adder 9 constitute a rotation speed detection unit 10. This rotation speed detector 7 outputs the signal VN + Vd.
Is output as a rotation speed detection signal, and an output signal VN of the rotation speed detector 7 is output from the other output terminal as a rotation speed detection signal.

The rotation speed detector 7 may be of any type as long as it generates a voltage signal having a magnitude proportional to the rotation speed of the engine. The rotation speed detector 7 is mounted on the output shaft of the engine. Each time a frequency generator (a generator that generates a voltage proportional to the engine speed) or an ignition device of the internal combustion engine 1 performs an ignition operation, a pulse shape induced in a primary coil of an ignition coil of the ignition device is generated. A frequency / voltage converter that converts the frequency of the voltage to a voltage signal and generates a voltage signal proportional to the engine speed can be used. When a signal generator for generating a pulse signal at a specific rotation angle position of the engine is mounted on the engine to control the ignition position of the ignition device for the internal combustion engine, the signal generator and the signal generator The frequency detector 7 can be configured by a frequency / voltage converter that converts the frequency of the pulse signal output from the generator into a voltage signal. Further, the voltage induced in the power generation coil in the AC generator 2 can be used as a signal proportional to the engine speed.

The rotation speed detection signal VN + Vd generated by the rotation speed detection means 10 is input to the rotation speed deviation calculating means 11 together with a target rotation speed signal VN0 for providing a target rotation speed of the internal combustion engine. The rotation speed deviation calculating means 11 calculates the difference between the rotation speed detection signal VN + Vd and the target rotation speed signal VNO,
A rotation speed deviation signal VNd (= VN + Vd-VN0) for giving a deviation (rotational speed deviation) between the engine speed and the target speed is output. The rotational speed deviation signal VNd is proportional to the proportional constant K
The proportional control signal VNP (= Kp ×) is input to a proportional calculator 12a for multiplying p and an integrator 12b for time-integrating the rotational speed deviation signal and output from the proportional calculator 12a.
VNd) and the integration control signal VNI output from the integrator 12b.
[= KI∫VNd · dt (KI is an integral control constant)] is input to the manipulated variable calculator 12c.

The fuel supply necessary for reducing the rotational speed deviation calculated by the rotational speed deviation calculating means 11 to zero or less than an allowable range by the proportional calculator 12a, the integrator 12b and the manipulated variable calculator 12c. The operation amount of the amount adjustment unit is calculated, and an operation amount signal that gives the calculated operation amount is supplied to the driving circuit 6.
Is constituted. The drive circuit 6 supplies a drive current to the actuator 5 so as to operate the fuel supply amount adjustment unit of the engine by the operation amount calculated by the operation amount calculation means 12.

Reference numeral 13 denotes voltage detecting means for detecting a terminal voltage of the battery 4 and outputting a voltage detection signal VL having a magnitude proportional to the terminal voltage. The voltage detecting means 13 divides the terminal voltage of the battery, for example. It can be constituted by a resistance voltage dividing circuit.

Reference numeral 14 denotes voltage setting means for outputting a voltage setting signal V0 for giving a target terminal voltage of the battery 4, and the voltage setting means is constituted by, for example, a potentiometer to which a constant DC voltage is applied. The voltage setting signal V0 output from the voltage setting means 14 is supplied to the voltage deviation calculating means 15 together with the voltage detection signal VL. The voltage deviation calculating means 15 calculates the difference between the terminal voltage of the battery 4 and the target terminal voltage by calculating the difference between the voltage setting signal V0 and the voltage detection signal VL, and obtains the voltage deviation signal VLd ( = VO-VL).

Numeral 16 denotes an internal combustion engine 1 necessary for reducing the deviation between the terminal voltage of the battery detected by the voltage detecting means 13 and the target terminal voltage set by the voltage setting means 14 to zero or less than an allowable range. Target speed calculating means for calculating the number of rotations as a target speed for voltage control, the calculating means performing a proportional operation on the voltage deviation signal VLd and outputting a proportional control signal VLp; An integrator 16b for performing an integration operation on the signal VLd and outputting an integration control signal VLi; and a voltage control target rotation speed for calculating the voltage control target rotation speed from the proportional control signal VLp and the integration control signal VLi, and providing the target rotation speed. A target rotation speed calculator 16c for outputting a target rotation speed signal VNO. The proportional calculator 16a performs an operation of multiplying the voltage deviation signal VLd by a proportional constant Kp 'to output a proportional control signal VLp = VLd * Kp', and the integrator 16b performs time integration of the voltage deviation signal to perform integral control. A signal VLi = KI'ＫVLd · dt (KI 'is an integral control constant) is output. The target speed signal VNO output from the target speed calculator 16c is input to the speed deviation calculating means 11.

The voltage detection signal VL output from the voltage detection means 13 is input to the start command generating comparator 102 together with the start voltage setting signal VSTART output from the start voltage setter 101, and the output of the comparator 102 is used as the start command. The signal is input to the generation timer circuit 103 as a trigger signal. The starting voltage setting signal VSTART is a signal for setting the terminal voltage of the battery at the time of starting the starting operation of the internal combustion engine as the starting voltage.

The starting command generating comparator 102 compares the terminal voltage of the battery detected by the voltage detecting means 13 with the starting voltage given by the starting voltage setting signal VSTART, and detects the detected terminal voltage of the battery. When the voltage becomes equal to or less than the voltage, the output state is changed to generate a start command generation timer drive signal ST. The drive signal ST is supplied to a start command generation timer circuit 103.

Further, a start determination unit 105 is provided which receives the output signal of the rotation speed detector 7 and compares the detected rotation speed with a determination value to determine whether the engine has been started. ing. The output of the start determiner 105 is given as a reset signal RST to the reset terminal of the start command generation timer circuit 103.

The start command generation timer circuit 103 starts a timed operation when the terminal voltage of the battery 4 falls below the start voltage and the start command generation comparator 102 generates the start command timer drive signal ST. A timed operation is performed for a predetermined time period, and when the timed operation is completed, a start command ST ′ is given to the start means 104. When the timer drive signal ST is extinguished while the timer circuit 103 is performing the timed operation, and when the start determination unit 105 generates the reset signal RST, the timer circuit 103 is reset to a state before the timed operation is started. Then, the output of the start command ST 'is stopped.

The starting means 104 is provided on the outer periphery of a starter motor driven while the start command ST 'is given, a pinion gear driven by the souter motor, and a flywheel attached to the crankshaft of the engine. The starter motor is rotated while a start command is given, and a pinion gear driven by the motor is engaged with the ring gear to drive the crankshaft to start the engine. Let it.

The power generator shown in FIG. 1 is further provided with a start notification alarm drive circuit 106 and a start notification alarm 107, and a start command generation timer drive signal ST output from the start command generation comparator 102 is provided. Are also provided to the start notification alarm drive circuit 106. The start notification alarm drive circuit drives the start notification alarm 107 while the timer drive signal ST is generated by detecting that the terminal voltage of the battery 4 has become equal to or lower than the start voltage, and starts the start instruction generation timer. When the signal ST disappears, the driving of the start notification alarm 107 is stopped.

The start notice alarm 107 is operated in response to the timer drive signal ST.
, So that an operator or the like can foresee the start of the internal combustion engine prior to the start of the internal combustion engine by the operation of the start notification alarm 107. For example, a lamp, a buzzer, or the like, which operates via a battery as a power source via a start-notification-notification-notice drive circuit 106, can be used as the start-notification-notification alarm.

The rotation speed detection signal VN output from the rotation speed detector 7 is input to the start determination unit 105 and also to the stop command generation comparator 109 and the stop determination unit 112. The stop command generation comparator 109 receives the rotation speed detection signal VN and the stop rotation speed setting signal VSTOP generated by the stop rotation speed setting unit 108.

The stop command generating comparator 109 includes a rotation speed detection signal VN provided from the rotation speed detector 7 and a stop rotation speed setting signal VSTOP provided from the stop speed setting device 108.
By comparing the detected rotation speed of the engine with the set stop rotation speed, when the detected rotation speed becomes equal to or lower than the stop rotation speed, the stop command generation timer drive signal STP is generated. Output. This timer drive signal STP is
It is input to the stop command generation timer circuit 110.

The stop judging device 112 judges that the engine has stopped when the rotation speed of the engine falls below the judgment value, generates a reset signal RST ′, and supplies the reset signal RST ′ to the timer circuit 110.

The stop command generation timer circuit 110 starts a timed operation when a timer drive signal STP is supplied, performs a timed operation for a set length, and stops the timed operation when the timed operation is completed. A stop command STP 'is given to the timer 111. When the timer drive signal STP disappears on the way and when the reset signal RST' is given, the timed operation is stopped to return to a state before the timed operation is started, and the stop command S is issued.
Stop generation of TP '.

The stop means 111 may be any means that stops the internal combustion engine in any way in response to the stop command.
For example, a stop switch that stops the engine by stopping the ignition operation by short-circuiting or disconnecting some of the components of the internal combustion engine ignition device when a stop command is given,
A stop switch that is turned on in response to a stop command to short-circuit a power generation coil that supplies power to an ignition device for an internal combustion engine or that disconnects the power generation coil from the ignition device to stop the ignition operation and stop the engine. Stop means 11
1 can be used. Also, an electromagnetic valve that shuts off the supply of fuel to the engine when a stop command is given can be used as the stopping means.

When the internal combustion engine 1 is a diesel engine, the control means for controlling the supply of the drive current to the actuator so as to move the control rack for adjusting the fuel supply amount to the internal combustion engine in the fuel supply stop direction is a stopping means. 111 may be used.

The power generator shown in FIG. 1 is further provided with a stop notice notification drive circuit 113 and a stop notice notification 114, and a stop command generation timer drive signal output from the stop command generation comparator 109. STP and stop determiner 1
The reset signal RST ′ output from the stop signal 12 is also supplied to the stop notice notification device drive circuit 113. The stop announcement notifier drive circuit 113 drives the stop announcement notifier 114 while the timer drive signal STP is being generated, and stops driving the stop announcement notifier 114 when the reset signal RST ′ is input.

The stop notification alarm 114 may be any device that can predict the stop of the internal combustion engine by the operation of the stop notification alarm. For example, a lamp that operates via a stop notification alarm driving circuit 113 using a battery as a power supply, A buzzer or the like can be used. However, it is desirable that the notification by the stop notification device be recognizable separately from the notification by the start notification device 107.

In the power generating apparatus shown in FIG.
A rotation speed control loop is configured by a loop of the rotation speed detection unit 10-a rotation speed deviation calculation unit 11-an operation amount calculation unit 12-a drive circuit 6-an actuator 5-a loop of the internal combustion engine 1, and an internal combustion engine 1-an AC generator 2 Rectifier 3-battery 4-voltage detection means 13-voltage deviation calculation means 15-target rotation speed calculation means 16-rotation speed deviation calculation means 11-manipulated variable calculation means 1
A voltage control loop is formed by a loop of the 2-drive circuit 6-actuator 5-internal combustion engine 1. These rotation speed control loop, voltage control loop and voltage setting means 1
The rotation speed control unit 4 controls the rotation speed of the internal combustion engine such that the deviation between the terminal voltage of the battery and the target terminal voltage is reduced to zero or less than an allowable range.

Also, the internal combustion engine 1-the alternator 2-the rectifier 3-the battery 4-the voltage detection means 13-the comparator 102-the start command generation timer circuit 103-the start means 104-the loop of the internal combustion engine 1 and the setting of the start voltage The engine 101 and the start judging unit 105 constitute an engine start control unit for starting the internal combustion engine when the terminal voltage of the battery drops to the set start voltage.
-A comparator 109-a stop command generation timer circuit 110-a stop means 111-a stop rotation number at which the rotation number of the internal combustion engine is set by the loop of the internal combustion engine 1 and the stop rotation number setting unit 108 and the stop determination unit 112 An engine stop control unit is configured to perform an operation of stopping the internal combustion engine when the internal combustion engine has dropped to the lower limit.

In the internal-combustion-engine-driven power generator shown in FIG.
The rotational speed deviation calculating means 11 calculates a deviation between the engine rotational speed detected through the rotational speed detecting means 10 and the voltage control target rotational speed calculated by the target rotational speed calculating means 16 as a rotational speed deviation.

The operation amount calculating means 12 calculates an operation amount (actuator operation amount) of the fuel supply amount adjustment unit required to make the rotational speed deviation zero or to keep the deviation below the allowable range. At this time, the driving circuit 6
The actuator 5 is supplied with a drive current necessary for operating the fuel supply amount adjustment unit by the operation amount calculated by the above, and the actuator is operated. Accordingly, the engine is controlled so that the deviation between the rotation speed of the internal combustion engine and the target rotation speed for voltage control is made zero or the deviation is suppressed to an allowable range or less, and the output voltage of the generator and the target voltage are controlled. Is made zero or the deviation is kept below an allowable range.

In the example shown in FIG. 1, the differential control signal Vd generated by the differentiator 8 functions to suppress a change in the engine speed while the engine speed approaches the target engine speed. In the process of the engine speed approaching the target speed, the sum signal of the voltage signal VN and the differential control signal Vd proportional to the speed exceeds the target speed signal VN0 given by the target speed calculating means 16. Then, a correcting operation for operating the actuator in a direction to reduce the engine speed is performed. As described above, when a differentiator is provided in the rotation speed detecting means 10 and the signal of the sum of the voltage signal proportional to the rotation speed and the differential signal is used as the rotation speed detection signal, the rotation speed of the engine becomes the target rotation speed. Since the change in the rotation speed is suppressed in the process of rising toward, the fuel supply amount to the internal combustion engine is limited before the engine rotation speed exceeds the target rotation speed, and the correction operation is started, It is possible to prevent an overshoot from occurring when the rotation speed greatly exceeds the target rotation speed, and it is possible to always perform the rotation speed control operation stably.

In the internal combustion engine drive shown in FIG.
When the battery 4 discharges and the terminal voltage VB (voltage detection signal VL) of the battery detected by the voltage detection means 13 decreases to the starting voltage VBS (starting voltage setting signal VSTART) set by the starting voltage setting device 101, the comparison is started. Vessel 102
Changes (for example, from a low level to a high level) to generate a start command generation timer drive signal ST, the start command generation timer circuit 10
3 starts timed operation. When the timed operation is completed, that is, when the state in which the terminal voltage of the battery 4 is lower than or equal to the starting voltage has continued for a predetermined time, the timer circuit 103 gives the starting means 104 a start command ST ′. As a result, the starter motor constituting the starting means 104 is started to start the internal combustion engine 1. When the internal combustion engine 1 starts, the start determination unit 105 resets the timer circuit 103. Therefore, the timer circuit 103 stops generating a start command and stops the operation of the start unit 104.

On the other hand, the start command generation timer drive signal ST generated from the comparator 102
06, the start notice notifier 107 is driven by the start notice notifier drive circuit to notify the start of the internal combustion engine 1. When the engine is started and charging of the battery 4 is restarted and the terminal voltage VB (voltage detection signal VL) exceeds the starting voltage VBS (starting voltage setting signal VSTART), the generation of the start command generation timer drive signal ST is stopped. Then, the operation of the start notification alarm 107 stops.

The terminal voltage of the battery instantaneously falls below the starting voltage VBS due to some disturbance, and the timer circuit 103 starts timed operation. During the timed operation, the terminal voltage VB of the battery exceeds the starting voltage. When the value returns to the value and the start command generation timer drive signal ST disappears, the timer circuit 103 is reset. Therefore, the engine is not started due to the instantaneous decrease in the terminal voltage of the battery. Also, in this case, the start notice alarm 107
Operates only for a short time when the terminal voltage of the battery is lower than the starting voltage VBS, and can recognize that the terminal voltage of the battery is instantaneously lower than the starting voltage VBS due to disturbance.

When the internal combustion engine starts, the alternating current generator 2 generates a voltage, so that a charging current is supplied to the battery 4. As the charging of the battery progresses, its terminal voltage VB
As described above, since the engine speed N is controlled so as to maintain the terminal voltage VB of the battery at the target voltage, the terminal voltage VB of the battery becomes the target voltage VBO (voltage setting signal V0). The engine speed N is kept lower as the charging of the battery progresses.

When the charging of the battery 4 is completed and the engine speed decreases to the stop speed Ns set by the stop speed setting device 108, the speed detection signal VN becomes lower than the stop speed setting signal VSTOP. , The stop command generating comparator 109 generates a stop command generating timer drive signal STP. Thus, the stop command generation timer circuit 110 starts a timed operation, and generates a stop command STP 'when the timed operation is completed. When the stop command STP 'is generated,
The stopping means 111 operates to stop the internal combustion engine 1. When the internal combustion engine stops, the stop determiner 112 gives a reset signal RST 'to the stop command generation timer circuit 110, so that the timer circuit 110 stops outputting the stop command STP'.

When the stop command generation comparator 109 generates the stop command generation timer drive signal STP, the stop notification signal drive circuit 113 to which the timer drive signal STP is applied drives the stop notification signal 114. And the internal combustion engine 1
Notice that will stop. Reset signal RST ′ output from stop determiner 112 when internal combustion engine stops
Is also given to the stop notice alarm drive circuit 113, and the stop notice alarm drive circuit 113 stops driving the stop notice alarm 114 when the reset signal RST 'is applied. When the internal combustion engine is stopped due to a shortage of fuel, the internal combustion engine is stopped due to a rapid decrease in the rotation speed, and thus the stop notice annunciator 114 operates only for a very short time. Therefore, unlike the case where the internal combustion engine stops after the timed operation of the stop command generation timer circuit 110 ends, it is possible to recognize that the fuel is insufficient.

As described above, according to the present invention, the engine is started when the terminal voltage of the battery decreases to the predetermined starting voltage, and the engine is stopped when the rotation speed of the engine decreases to the stop rotation speed. Therefore, the start / stop control of the engine can be performed without detecting the output current of the generator by using an expensive current detecting means such as a current transformer, thereby saving fuel consumption.

As shown in FIG. 1, a control loop for controlling the deviation between the rotation speed of the internal combustion engine and the target rotation speed to be within an allowable range is provided, and the output voltage of the generator and the target output voltage are controlled. A target rotation speed calculating means for calculating a target rotation speed of the engine required to reduce the deviation to zero or to be equal to or less than an allowable range as a target rotation speed for voltage control is provided.
When the target rotation speed for voltage control calculated by the target rotation speed calculation means is configured to be the target rotation speed of the control loop, when the load on the AC generator 2 increases, the rotation speed of the engine is within an allowable range. Can be prevented, and it is possible to prevent the engine speed from excessively increasing due to an increase in the load of the generator, shortening the life of the engine, and preventing the engine from breaking down.

Further, a start notice alarm drive circuit and a start notice alarm driven by the drive circuit are provided so that, when the terminal voltage of the battery becomes equal to or lower than the start voltage, the internal combustion engine is started before the start of the engine. The internal combustion engine is stopped when the rotation speed of the internal combustion engine becomes equal to or less than the stop rotation speed by providing a start notification or a stop notification alarm drive circuit and a stop notification alarm driven by the drive circuit. Prior to the start of the engine, it is possible to perform necessary preparations prior to the start and stop of the engine by recognizing that the start notification alarm and the stop notification alarm have been activated. Therefore, it can be confirmed that the control device is operating normally.

FIG. 2 shows a specific example of the configuration of the engine start control section, the start notice notifier drive circuit 106, and the start notice notifier 107 of the power generator of FIG. In the example shown in FIG. 2, the start command generating comparator 102 is composed of a comparator CMP1. The inverting input terminal of the comparator 102 has a voltage output from the voltage detecting means 13 and proportional to the terminal voltage VB of the battery 4. Is input.
The non-inverting input terminal of the comparator 102 has a terminal voltage (starting voltage) V of the battery 4 when starting the internal combustion engine.
Starting voltage setting signal VST set to a magnitude corresponding to BS
ART is entered. In this example, the starting voltage setting device 101 is composed of a voltage dividing circuit for dividing a constant DC voltage obtained by a constant voltage power supply circuit (not shown) by resistors R1 and R2, and a starting voltage setting signal VSTART is obtained at a voltage dividing point. The comparator 102 receives the voltage detection signal VL and the starting voltage setting signal V
When the voltage detection signal VL decreases with the lapse of time t and falls below the start voltage setting signal VSTART at time t1 as shown in FIG.
As shown in FIG. 3B, a timer drive signal ST for generating a start command which changes from a low level to a high level at time t1 is output from the output terminal of FIG. The timer drive signal ST is supplied as a trigger signal to a trigger terminal a1 of the start command generation timer circuit 103, and the start notice warning device drive circuit 1
06.

The timer circuit 103 for generating a start command includes a comparator CMP2 having a non-inverting input terminal grounded via a capacitor C1, and a charging circuit connected between a trigger terminal a1 of the timer and a non-grounded terminal of the capacitor C1. Resistance R3
A series circuit of a diode D1 and a discharge resistor R4, which are connected in parallel between both ends of the charge resistor and whose cathode is directed to the trigger terminal a1, and an output terminal (not shown) and a trigger terminal a1 of the constant voltage power supply circuit. The resistor R connected between
5, a voltage dividing circuit for dividing a constant DC voltage, which is composed of a series circuit of resistors R6 and R7, to apply a reference voltage Vref1 to an inverting input terminal of a comparator CMP2, and a trigger terminal a1.
The diodes D2 and D3 whose anodes are connected to the output terminal of the comparator CMP2 and whose cathodes are commonly connected to the reset terminal b1 of the timer, respectively, are connected between the output terminal of the constant voltage power supply circuit and the output terminal of the comparator CMP2. And a resistor R8. The trigger terminal a1 is connected to the output terminal of the comparator 102, and the reset terminal b1 is connected to the output terminal of the starter 112. The output terminal of the comparator CMP2 is connected to the output terminal c1 of the timer circuit 103. The resistance value of the charging resistor R3 is selected to be extremely large with respect to the resistance value of the resistor R5, and the resistance value of the discharging resistor R4 is selected to be extremely small with respect to the resistance value of the resistor R5.

In the above-mentioned start command generating timer circuit 103, when a high-level timer drive signal ST is supplied from the comparator 102 to the trigger terminal a1 at time t1, a capacitor is passed through a resistor R5 and a charging resistor R3 by a constant DC voltage. The charging operation of C1 starts and the timed operation starts.
The terminal voltage Vc1 of the capacitor C1 and the reference voltage Vref1 are compared by a comparator CMP2. When the terminal voltage Vc1 of the capacitor C1 rises and exceeds the reference voltage Vref1 at time t2 as shown in FIG. Is completed, and the voltage at the output terminal of the comparator CMP2 becomes high at time t2. Thus, a high-level start command S as shown in FIG. 3D is output from the output terminal c1 of the timer circuit 103.
T 'is output and the start command ST' is given to the start means 104. The length of time during which the timed operation is being performed (startup determination time) T1 = t2-t1 can be adjusted by changing the value of the reference voltage Vref1 by changing the ratio of the resistance values of the resistors R6 and R7.

The starting means 104 receives the excitation current from the battery BAT through the transistor TR1 which is turned on when the start command ST 'is applied to the base from the start command generation timer circuit 103 and the collector emitter circuit of the transistor. Electromagnetic switch 10 with normally open contacts closed
4a and a diode D4 connected in anti-parallel to the exciting coil of the electromagnetic switch, and a battery B through the contact when the electromagnetic switch 104a is excited to close its contact.
Starter motor 104b supplied with drive current from AT
And a pinion gear (not shown) driven by the starter motor, and a ring gear (not shown) provided on the outer periphery of a flywheel attached to the crankshaft of the engine, and start at the time t2 at the base of the transistor TR1. When command ST 'is given, starter motor 1
The engine 04 is started by driving the crankshaft by rotating the pinion gear 04b and meshing the pinion gear driven by the motor with the ring gear.

The start judging device 105 is connected to a non-inverting input terminal of a series circuit of resistors R9 and R10 to which a constant DC voltage is applied to both ends, and a connection point between the resistors R9 and R10. 7, a comparator CMP3 in which a rotation speed detection signal VN output from an inverting input terminal, an output terminal of a constant voltage power supply circuit (not shown) and a comparator CM
And a resistor R11 connected between the output terminal of P3. The magnitude of the voltage obtained at the connection point between the resistors R9 and R10 is determined when the engine is driven by the starter motor and becomes capable of operating on its own (ie, the engine can rotate without being driven by the starter motor). Is set to a value VNS corresponding to the rotation speed (starting rotation speed). Time t2
The engine start operation is started at
As shown in FIG. 3E, N rises as shown in FIG. 3 (E), and at time t3, when the engine reaches the starting speed at which the engine can operate by itself and the speed detecting signal VN reaches a value VNS corresponding to the starting speed, the comparator From the output terminal of CMP3, a timer reset signal RST which changes from high level to low level (ground level) at time t3 is generated as shown in FIG. 3 (F). This low-level reset signal RST is applied to the reset terminal b1 of the timer circuit 103. When the reset signal RST is supplied to the timer circuit 103, the output terminal c1 of the timer circuit goes to the ground level through the diode D3.
(D) As shown in FIG.
The transistor TR1 of No. 04 is turned off. As a result, the contact of the electromagnetic switch 104a opens, the rotation of the starter motor 104b stops, and the start of the engine is completed. When the reset signal RST is applied to the reset terminal b1, the potential of the trigger terminal a1 of the timer circuit 103 goes to the ground level through the diode D2, and the timer drive signal ST stops as shown in FIG. With
The charge of the capacitor C1 is equal to the discharge resistance R4 and the diode D
1 rapidly discharges the terminal voltage Vc1 of the capacitor.
Rapidly decreases to the ground level as shown in FIG.

The start notification alarm drive circuit 106 includes a transistor TR2 having an emitter grounded and a base connected to the output terminal of the start command generating comparator 102, and a diode D5 having an anode connected to the collector of the transistor TR2. In this example, the start notification alarm 107 comprises a lamp L1 having one terminal connected to the collector of the transistor TR2 and the other terminal connected to the positive terminal of the battery BAT and the cathode of the diode D5. When the timer drive signal ST output from the start command generation comparator 102 is provided to the start command generation timer circuit 103 and also to the start notification warning device drive circuit 106 at time t1, the timed operation of the timer circuit 103 is started. Is started, the transistor TR2 is turned on. As a result, the lamp L as a start notice alarm
1 has a lamp current I through a lamp L1 and a transistor TR2 from a battery BAT as shown in FIG.
L1 flows to turn on the lamp, and the lighting of the lamp L1 gives a notice of starting the engine. When the start of the engine is completed at time t3, the timer drive signal ST is stopped and the transistor TR2 is turned off, so that the lamp L1 is turned off.

Next, the engine stop control unit, the stop notice notifier drive circuit 113 and the stop notice notifier 11 of the power generator shown in FIG.
FIG. In the example shown in FIG. 4, the stop command generation comparator 109 is a comparator CMP.
The rotation speed detection signal VN output from the rotation speed detector 7 is input to the inverting input terminal of the comparator 109. A non-inverting input terminal of the comparator 109 has a potentiometer VR with a constant DC voltage applied to both ends.
The stop rotation speed setting signal VSTOP obtained for the first slider is input. The magnitude of the stop rotation speed setting signal VSTOP is set to a value corresponding to the rotation speed when the battery is charged and the engine is stopped, but the set value can be adjusted according to the magnitude of the battery load. In this case, it can be adjusted as appropriate by adjusting the position of the slider of the potentiometer VR1. When the engine speed becomes equal to or lower than the set stop speed, the comparator 109 outputs a high-level stop command generation timer drive signal STP, and the timer drive signal is output to the stop command generation timer circuit 11.
0 and the stop notice alarm drive circuit 113 are provided.

The stop command generation timer circuit 110 includes a comparator CMP5, a capacitor C2, and a diode D
6 to D8 and the resistors R12 to R17 constitute a circuit similar to the start command generation timer circuit 103 in FIG. When the timer drive signal STP is given as a trigger signal to the trigger terminal a2 of the timer circuit 110, charging of the capacitor C2 starts at a constant DC voltage through the resistors R14 and R12, and the timed operation starts.
The terminal voltage Vc2 of the capacitor C2 rises and the reference voltage Vre
When f2 is exceeded, the timed operation ends and the comparator CMP5
Becomes high, and a high-level stop command STP 'is output from the output terminal c2 of the timer circuit 110.
11 is given. The length of the time period (stop determination time) during which the timed operation is performed can be adjusted by changing the value of the reference voltage Vref2 by changing the ratio of the resistance values of the resistors R15 and R16.

In this example, the stopping means 111 is normally supplied with an exciting current from the battery BAT through a transistor TR3 which becomes conductive when a stop command STP 'is given to the base and a collector-emitter circuit of the transistor. An engine stop switch consisting of an electromagnetic switch 111a with an open contact closed and a diode D9 connected in anti-parallel to the exciting coil of the electromagnetic switch. The movable contact of the electromagnetic switch is grounded and the fixed contact is the ignition circuit 1 of the engine.
Fifteen ignition coils (not shown) are connected to non-ground terminals of the primary coil. In the stopping means 111 of this example, while the stop command STP 'is given to the base of the transistor TR3, the primary switch of the ignition coil is short-circuited by the electromagnetic switch 111a to stop the generation of the ignition high voltage, thereby stopping the engine. Stop.

The stop judging device 112 is connected to a series circuit of resistors R18 and R19 to which a constant DC voltage is applied to both ends, and a connection point between the resistors R18 and R19 is connected to an inverting input terminal. A comparator CMP6 in which a rotation speed detection signal VN output from the inverter is input to a non-inverting input terminal, an output terminal of a constant voltage power supply circuit (not shown), and a comparator CM.
And a resistor R20 connected between the output terminal of P6. The magnitude of the voltage VS0 obtained at the connection point between the resistors R18 and R19 is set to a magnitude corresponding to a very low rotational speed at which the engine cannot operate on its own.

When a stop command STP 'is given to the stop means 111 and the number of revolutions of the engine is reduced, and the magnitude of the number of revolutions detection signal VN falls below the magnitude of the voltage VS0, the output of the The voltage of the terminal changes from the high level to the low level (ground level), and the low level signal is used as the reset signal RST 'as the reset terminal b2 of the timer circuit 110.
Given to. Thus, the timer drive signal STP output from the comparator 109 and the stop command STP 'output from the timer circuit 110 stop, and the stop operation of the engine is completed.

The stop-notice-notifier drive circuit 113 comprises a transistor TR4 and a diode D10 and has the same configuration as the start-notice-notice-notifier drive circuit 106. The stop-notice-notifier 114 is a start-notification-notification in this example. Container 107
Similarly, the lamp L2 is provided. In the case where lamps are used for both the start notification alarm 107 and the stop notification alarm 114, it is preferable that both lamps can be identified by using different colors.

When the engine speed falls below the stop speed,
The high-level timer drive signal STP output from the comparator 104 is supplied to the timer circuit 110 and also to the stop notice notification drive circuit 113, so that the transistor TR4 is turned on to serve as a stop notice notification. The lamp L2 lights up to notify the engine stop. When the stop of the engine and the stop judging device 112 outputs a low-level reset signal RST ′, the timer circuit 110 is reset and the output terminal of the comparator 109 becomes low. Transistor T
R4 becomes non-conductive and lamp L2 of stop notice alarm
Turns off.

In the examples shown in FIG. 2 and FIG. 4, the start notice notice 107 and the stop notice notice 114 are constituted by the lamps L1 and L2, respectively. May be configured.

In the examples shown in FIG. 2 and FIG. 4, the starting notice notifying device driving circuit 106 and the starting notice notifying device 1 are respectively provided.
07 and the stop notice alarm drive circuit 113 and the stop notice alarm 114 are configured so that the lamps are turned on while the start command generation timer drive signal ST and the stop command generation timer drive signal STP are supplied, respectively. But
While the start command generation timer drive signal ST and the stop command generation timer drive signal STP are given, each of the alarm drive circuits interrupts the lamp current so that the lamp repeats blinking. The start or stop of the engine may be notified in advance.

[0082]

As described above, according to the present invention, the engine is started when the terminal voltage of the battery drops to the predetermined starting voltage and this state continues for the set start determination time, and the engine is started. Since the engine is stopped when the rotation speed decreases to a predetermined stop rotation speed and this state continues for the set stop determination time, the generator is operated using expensive current detection means such as a current transformer. The start / stop control of the engine can be performed without detecting the output current of the engine to save fuel consumption, and the instantaneous disturbance may cause the terminal voltage of the battery to drop below the starting voltage. If the rotation speed of the engine drops below the stop rotation speed, the engine starts,
Since the stop is not performed, the start and stop control of the engine can be stably performed.

Further, according to the present invention, when the terminal voltage of the battery becomes equal to or lower than the starting voltage, the engine is provided with a start notice notifying device which is driven prior to the start of the engine to notify the start of the engine. This has the advantage that it is possible not only to prepare in advance for a situation occurring at the start of the engine, but also to confirm that the engine start control is performed normally.

Further, according to the present invention, when the engine rotation speed drops to a predetermined stop rotation speed, a stop announcement notification device which is driven prior to the engine stop to notify the engine stop is provided. Can confirm that the stop control of the engine is normally performed by operating the stop notice alarm, and can easily identify whether or not the stop of the engine is due to the fuel shortage. There are advantages.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of the configuration of an internal combustion engine driven power generation device according to the present invention.

FIG. 2 is a circuit diagram showing a specific configuration example of an engine start control unit, a start notice alarm drive circuit, and a start notice alarm used in the power generator of FIG. 1;

FIG. 3 is a diagram showing a temporal change of a voltage or a current of each part of the circuit of FIG. 2;

FIG. 4 is a circuit diagram showing a specific configuration example of an engine stop control unit, a stop notice alarm drive circuit, and a stop notice alarm used in the power generator of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Internal combustion engine, 2 ... Alternator, 3 ... Rectifier, 4 ... Battery, 5 ... Actuator, 6 ... Drive circuit, 7 ... Revolution detector, 8 ... Differentiator, 9 ... Adder, 10 ... Revolution detection Means, 11: rotational speed deviation calculating means, 12: manipulated variable calculating means, 13: voltage detecting means, 14: voltage setting means, 15 ...
Voltage deviation calculating means, 16 ... Target rotational speed calculating means, 100
... Electrical load, 101 ... Starting voltage setter, 102 ... Comparator for starting command generation, 103 ... Timer circuit for generating starting command,
104: starting means, 104a: electromagnetic switch, 104b
... Starter motor, 105 ... Start judging device, 106 ... Start notice notification device drive circuit, 107 ... Start notice notification device, 108
... Stop rotation number setting device, 109 ... Comparator for stop command generation,
110: Stop command generation timer circuit, 111: Stop means, 111a: Electromagnetic switch, 112: Stop determiner, 1
Reference numeral 13 denotes a stop notification alarm drive circuit, 114 denotes a stop notification alarm, CMP1 to CMP6, comparators, L1, L2, and the like.
lamp

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Osamu Fukumoto 3744 Ooka, Numazu-shi, Shizuoka Japan In-house Electric Company (72) Inventor Toru Nozu 3744 Ooka, Numazu-shi, Shizuoka Japan In-house Electric Corporation (72) Inventor Shuichiro Yoshio 3744 Ooka, Numazu, Shizuoka Pref. EA05 EB02 EB21 FA01 FB01 FC12 FC21 FC22 GA02 GA10 GB02 HA02 HA11 HA27 HB06 JA09 JA13 JA14 JB05 JB07 JB18 KK01 KK02 5H607 AA17 BB02 BB07 CC03 CC07 DD03 DD19 EE31 EE41 EE43 FF02 FF22 H0338HH01

Claims (4)

[Claims] 1. An internal combustion engine, an AC generator driven by the internal combustion engine, a battery charged by a rectified output of the AC generator, and a deviation between a terminal voltage of the battery and a target terminal voltage set to zero. Or a rotation speed control unit for controlling the rotation speed of the internal combustion engine so as to suppress the rotation speed of the internal combustion engine to be equal to or less than an allowable range. The terminal voltage of the battery is equal to or lower than a set starting voltage. An engine start control unit that performs a start operation of the internal combustion engine when a state continues for a set start determination time; a start notification alarm that is driven when the internal combustion engine is notified to start; and A starting notice notifying device driving circuit for driving the starting notice notifying device prior to starting the internal combustion engine when it is detected that the terminal voltage of the battery has become equal to or less than the starting voltage; An engine stop control unit that performs an operation of stopping the internal combustion engine when the state in which the rotation speed of the fuel engine is equal to or lower than the set stop rotation speed continues for the set stop determination time. An internal-combustion-engine-driven power generator, characterized in that: 2. An internal combustion engine, an AC generator driven by the internal combustion engine, a battery charged by a rectified output of the AC generator, and a deviation between a terminal voltage of the battery and a target terminal voltage set to zero. Or a rotation speed control unit for controlling the rotation speed of the internal combustion engine so as to suppress the rotation speed of the internal combustion engine to be equal to or less than an allowable range. The terminal voltage of the battery is equal to or lower than a set starting voltage. An engine start control unit that performs a start operation of the internal combustion engine when a state continues for a set start determination time; a start notification alarm that is driven when the internal combustion engine is notified to start; and A starting notice notifying device driving circuit for driving the starting notice notifying device prior to starting the internal combustion engine when it is detected that the terminal voltage of the battery has become equal to or less than the starting voltage; An engine stop control unit that performs an operation of stopping the internal combustion engine when the state in which the rotation speed of the fuel engine is equal to or less than the set stop rotation speed continues for the set stop determination time; and A stop-notification notification device that is driven when notifying that a stop is to be performed, and the stop-notification notification is performed prior to the stop of the internal combustion engine when it is detected that the rotation speed of the internal combustion engine has become equal to or less than the stop rotation speed. An internal combustion engine drive power generator, further comprising: a stop warning notification device drive circuit for driving the power unit. 3. An internal combustion engine, an AC generator driven by the internal combustion engine, a battery charged by a rectified output of the AC generator, and a deviation between a terminal voltage of the battery and a target terminal voltage set to zero. An internal combustion engine-driven power generation device comprising: a rotation speed control unit configured to control the rotation speed of the internal combustion engine so that the internal combustion engine is controlled to be within an allowable range. Starting voltage setting means for providing a starting voltage which is the terminal voltage of the battery when starting the starting operation of the battery, and comparing the terminal voltage detected by the voltage detecting means with the starting voltage provided by the starting voltage setting means. A start command generation comparator for generating a start command generation timer drive command when the detected terminal voltage becomes equal to or lower than the start voltage, and the start command generation comparator A timer circuit for performing a timed operation for a set start determination time when the timer drive command is being generated and generating a start command when the timed operation is completed; and Starting means for performing a start operation of the internal combustion engine at the time of determining whether the start of the internal combustion engine is completed based on the rotation speed detected by the rotation speed detection means, An engine start control unit having a start determination unit for resetting a start command generation timer circuit; a start notification alarm driven when notifying that the internal combustion engine is to be started; and a start detection signal detected by the voltage detection unit. A start-notification-notice-reporter driving circuit that drives the start-notification-notification indicator before the start command is issued when it is detected that the terminal voltage has become equal to or lower than the start voltage; and a rotation speed of the internal combustion engine. Rotation speed detection means for detecting the rotation speed, a stop rotation speed setting means for giving a stop rotation speed which is a rotation speed when the internal combustion engine is stopped, the rotation speed detected by the rotation speed detection means and the stop rotation speed setting A stop command generation comparator for generating a stop command generation timer drive command when a rotation speed detected by comparing with a stop rotation speed given by the means becomes equal to or less than the stop rotation speed; A stop command generation timer circuit that performs a timed operation for a set time when the device is generating a stop command generation timer drive signal and generates a stop command when the timed operation is completed; Stopping means for performing an operation for stopping the internal combustion engine when a stop command is issued; and determining whether or not the internal combustion engine has been stopped based on the rotation speed detected by the rotation speed detection means. Internal combustion engine driven power generation apparatus, wherein said the engine stop control unit and a stop determination unit that resets the engine stop timer circuit further be provided with a when it is judged to have stopped. 4. An internal combustion engine, an AC generator driven by the internal combustion engine, a battery charged by a rectified output of the AC generator, and a deviation between a terminal voltage of the battery and a target terminal voltage set to zero. An internal combustion engine-driven power generation device comprising: a rotation speed control unit configured to control the rotation speed of the internal combustion engine so that the internal combustion engine is controlled to be within an allowable range. Starting voltage setting means for providing a starting voltage which is the terminal voltage of the battery when starting the starting operation of the battery, and comparing the terminal voltage detected by the voltage detecting means with the starting voltage given by the starting voltage setting signal. A start command generation comparator for generating a start command generation timer drive command when the detected terminal voltage becomes equal to or lower than the start voltage, and the start command generation comparator A timer circuit for performing a timed operation for a set start determination time when the timer drive command is being generated and generating a start command when the timed operation is completed; and Starting means for performing a start operation of the internal combustion engine at the time of determining whether the start of the internal combustion engine is completed based on the rotation speed detected by the rotation speed detection means, An engine start control unit having a start determination unit for resetting a start command generation timer circuit; a start notification alarm driven when notifying that the internal combustion engine is to be started; and a start detection signal detected by the voltage detection unit. A start-notification-notice-reporter driving circuit that drives the start-notification-notification indicator before the start command is issued when it is detected that the terminal voltage has become equal to or lower than the start voltage; and a rotation speed of the internal combustion engine. Rotation speed detection means for detecting the rotation speed, a stop rotation speed setting means for giving a stop rotation speed which is a rotation speed when the internal combustion engine is stopped, the rotation speed detected by the rotation speed detection means and the stop rotation speed setting A stop command generation comparator for generating a stop command generation timer drive command when a rotation speed detected by comparing with a stop rotation speed given by the means becomes equal to or less than the stop rotation speed; A stop command generation timer circuit that performs a timed operation for a set time when the device is generating a stop command generation timer drive signal and generates a stop command when the timed operation is completed; Stopping means for performing an operation for stopping the internal combustion engine when a stop command is issued; and determining whether or not the internal combustion engine has been stopped based on the rotation speed detected by the rotation speed detection means. An engine stop control unit having a stop determination unit that resets the engine stop timer circuit when it is determined that the engine has stopped, a stop notification alarm that is driven when the internal combustion engine is notified to stop, and the internal combustion engine A stop announcement notification drive circuit that drives the stop announcement notification before the stop command is issued when it is detected that the rotation speed of the engine has become equal to or lower than the stop rotation speed. Internal combustion engine drive generator.