JPS5913339Y2 - automatic engine starting circuit - Google Patents

Description

[Detailed description of the invention] This invention is an automatic engine starting circuit that automatically starts the automobile engine, raises the engine temperature to a predetermined value, and then stops the engine, thereby keeping the engine on standby in a state suitable for driving. It is related to.

Engines that use fuel such as gasoline generate a large amount of heat, so the engine temperature is maintained at a set value using a water-cooled or air-cooled cooling mechanism, and the engine is designed to achieve maximum output and efficiency at this set temperature. ing.

For this reason, when driving a car, it is necessary to let the engine idle for several minutes to more than ten minutes to raise the temperature to the set temperature before starting driving.

Especially on cold mornings, when the outside air temperature is low, idling takes a long time, making it impossible to start the vehicle quickly, and driving without the engine temperature reaching the set value. In this case, the engine does not rotate smoothly, and problems arise in terms of exhaust gas, noise, fuel consumption, engine protection, etc.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an automatic engine starting circuit that automatically raises the engine temperature and puts the engine on standby so that the vehicle can start running quickly.

Another object of the present invention is to provide an automatic engine starting circuit that greatly reduces engine starting errors.

Still another object of the present invention is to provide an automatic engine starting circuit that completely prevents troubles caused by engine starting errors.

Another object of the present invention is to provide an automatic engine starting circuit that can be easily applied to existing automobiles.

Another object of the present invention is to provide an automatic engine starting circuit that has an extremely simple circuit configuration and yet provides reliable operation.

To achieve this purpose, the automatic engine starting circuit according to the present invention includes a main switching element that is activated and maintained by the output of a trigger switch, and a main switching element that is activated by the operation of the main switching element and that is activated after a predetermined period of time when the engine does not start. A timer that releases the main switching element, an intermittent section that provides intermittent starter motor current through the operation of the main switching element, a choke control section that has a DC motor that performs choke control, and a choke control section that detects engine startup and stops the starter motor operation. The engine is equipped with a start detection section that detects the temperature of the engine, and a thermoswitch that deactivates the main switching element after the engine temperature rises to a predetermined temperature.

Hereinafter, the automatic engine starting circuit according to the present invention will be described in detail with reference to the drawings.

FIG. 1 is a schematic circuit diagram showing an embodiment of the automatic engine starting circuit according to the present invention. 3 is a capacitor that is connected in parallel to the relay 2 and causes the relay 2 to perform a delay operation; these constitute a start detection section that detects the start of the engine. are doing.

4 is a power supply for the car, 5 is a neutral switch that closes only when the gear is in the new 1st gear position, 6
7 is a trigger switch that is momentarily closed when a preset time is reached, and 7 is the neutral switch 5.
7a is the self-holding contact of the main relay 7, and 8 is the normally open contact 7b of the main relay 7 and the normally cross contact 2a of the relay 2. power supply 4
This is a timer connected between both ends of the main relay 7, and is configured to operate and stop the operation of the main relay 7 when a predetermined period of time elapses without the engine starting when the main relay 7 is activated.

8a is a normal cross contact of the timer connected between the main relay 7 and the negative electrode of the power supply 4 to release the operation of the main relay 7, and 9 is a normal cross contact 2b of the relay 2.
This is a relay connected between both ends of the power supply 4 via the normally open contact 7C of the main relay 7, and turns on at intervals of several seconds when current is supplied.

It is configured to continue in off-operation.

Reference numeral 9a indicates a normally open contact of a relay 9 that supplies an intermittent current to the starter motor 10, and these relays 9 and the contact 9a constitute an intermittent section that supplies an intermittent current to the starter motor 10.

7d is a normally open contact of main relay 7 that supplies current to an ignition coil (not shown) of the automobile;
11 is a thermoswitch that releases the self-holding circuit of relay 7 when the engine reaches a predetermined temperature.

Although not shown in FIG. 1, a choke control section is provided.

The operation of the automatic engine starting circuit having the above configuration will be explained in detail below.

First, if the train is scheduled to depart at 7 a.m., for example, a timer (not shown) that activates the trigger switch 6 is set to approximately 15 minutes before the departure time, and the gear is placed in the neutral position.

Therefore, the neutral switch 5 is in the closed state.

This is a safety device that can only operate when the transmission is in the neutral position.

In other words, if the engine starts while the gear is still engaged, there is a risk that the car will start moving unattended and cause an accident.

Furthermore, even if the engine is initially in the neutral position, if the engine starts and the car is warmed up, if the car is accidentally started without using the engine key, there is a risk of an accident or theft.

In this state, when 6:45 a.m. is reached, the trigger switch 6 is momentarily closed by a timer (not shown).
As a result, the main relay 7 is excited by the path of power supply 4 - neutral switch 5 - trigger switch 6 - main relay 7 - contact 8a - power supply 4, and is self-held by the contact 7a.

Also, when the main relay 7 operates, its contacts 7b to 7d
To close it, perform the following actions.

First, when the contact point 7d serving as the ignition switch closes, the positive output of the power source 4 is supplied to an ignition coil (not shown), and the engine becomes ready for ignition.

On the other hand, when contact 7C of main relay 7 closes, power supply 4-
Relay 9 is energized via the path of contact 2b-contact 7C relay 9-power supply 4, and relay 9 performs intermittent operation at intervals of several seconds.

As a result, the contact 9a of the relay 9 also performs an intermittent operation, supplying an intermittent current to the starter motor 10.

Therefore, the starter motor 10 operates when the contact point 9a is closed to rotate the engine, so that the engine is started by sucking in the mixed gas and generating a spark at the ignition plug.

In this case, if starting is not performed due to engine trouble, contact 9a controlled by relay 9
The starter motor 10 is driven only for a few seconds while the starter motor 10 is closed, and then stops.

This is because if the starter motor 10 continues to be driven for a long period of time, the current consumption is extremely large and there is a risk of damaging the battery and the starter motor.

In addition, the interrupting section constituted by the relay 9 and the contact 9a is activated when the starter motor 10
to drive.

This pause period is provided to restore the output of the battery used as the power source 4 and to ensure smooth engagement between the starter motor 10 and the gears provided on the flywheel.

The engine is started by sequentially performing these operations.

However, if the engine does not start even after performing the above-mentioned starting operation a plurality of times, the timer 8 operates and stops all subsequent operations.

In other words, since the contact 7b closes with the operation of the main relay 7, the timer 8 performs a timing operation from the start of the operation of the interrupting section, and closes the contact 8a when the time for the above-mentioned starting operation to be performed a predetermined number of times is reached. Open to release main relay 7 from operation.

As a result, all the contacts 7a to 7d of the main roof are opened, so that all operations are canceled and the reset state is restored.

Therefore, in this case, the engine will not start unless the trigger switch 6 or the engine key is operated again after the trouble has been removed.

On the other hand, when the engine is completely started before the timer 8 is activated due to the repeated starting operation caused by the intermittent portion, the generated output (not shown) is supplied to the relay 2 and the capacitor 3 via the diode 1 for preventing backflow.

As a result, the relay 2 performs a delayed operation by the parallel-connected capacitor 3, and its normal cross contact 2a
, 2b is opened to stop the timer 8 from clocking, and at the same time, the relay 9 constituting the intermittent section is restored to stop the subsequent operation of the starter motor.

The engine automatically started in this manner continues to rotate by the ignition current supplied through the contact 7d of the main relay 7.

When the engine reaches the set temperature, the closed thermoswitch 11 opens, cutting off the self-holding circuit of the relay 7 and restoring the main relay 7.

As a result, the contact 7d opens and the ignition current is cut off, thereby stopping the engine.

In this way, since the temperature of the engine stopped by the thermoswitch 11 has been raised to a predetermined temperature, the engine can be started quickly by starting with the engine key without idling or the like.

In the above case, the engine was automatically started by setting the trigger switch 6 15 minutes before the scheduled departure time, but since the rate of increase in engine temperature differs greatly between winter and summer. It is necessary to make some changes to the .

However, in order to maintain an appropriate temperature state for several tens of minutes after the engine is stopped, the thermoswitch 11 may be set to stop the engine several tens of minutes before the scheduled departure time.

Next, if the started engine stops for some reason within the time set by timer 8, the power generation output will decrease as the engine stops, but relay 2 will continue to charge capacitor 3. Delayed recovery operation is performed by charge.

Therefore, when the engine is stopped, the disconnection section 9 is connected to the capacitor 3.
The starter motor 10 starts operating after a predetermined delay time, and the starter motor 10 is driven again when the engine and starter motor have completely stopped rotating. It's done smoothly.

FIG. 2 is a detailed circuit diagram of an embodiment of the automatic engine starting circuit according to the present invention.

In the figure, 12a and 12b are main switches that are interlocked with each other, and 13 is a power terminal 14 and main switch 1.
2 a fuse connected between the common contacts of a; 15 a trigger switch; 16 a neutral switch; 17 a fuse connected between the normally open contact a of the main switch 12 a and the ground via the trigger switch 15 and the neutral switch 16; main relay 18 is a capacitor connected in parallel with main relay 17, 17 a
are contacts of the main relay 17, and these constitute a main relay part 19.

20 is a relay connected between the common contact of the main switch 12b and the ground, 21 is a capacitor connected in parallel with the relay 20, 22 is a first thermoswitch that opens when the engine temperature rises to a predetermined value, and 23 is an engine The second thermoswitch 20a, which closes when the temperature rises to a temperature that does not require choke operation, is connected to the power supply side of the main relay 17, and the normally open contact a of the relay 20 is connected to the first thermoswitch 22. Contact, 20
b is a contact of the relay 20 in which the common contact is connected to the normally open contact a of the contact 17a, and 20C is the contact of the relay 20 whose common contact is connected to the common contact of the contact 20b, and the normally open contact is connected via the second thermoswitch 23. These are the contacts of the relay 20 connected to the normal cross contact of the main switch 12a, and these constitute the circuit switching section 24.

25 is a part of a timer, which includes a transistor 26, a diode 27, a Zener diode 28, a resistor 29, a capacitor 30, 31 . The relay 32 is connected to be operated by electric power supplied through the contact 17a.

32a is a contact of loop 32 which opens when the timer 25 completes the timing operation and stops the output supply to the normal cross contact of contact 20a, and 33 is a common contact between the normal cross contact of contact 20C. The connected first switch 34 is a second switch whose common contact is connected to the normal cross contact of the second thermo switch 23 and the main switch 12a, and 35 is connected between the contact a of the second switch 34 and the ground. 35a is a contact of the relay 35 whose normally open contact a is connected to the contact a of the second switch 34 and whose normal cross contact is grounded, and 35b is a contact whose normally open contact a is grounded and whose normal cross contact is connected to the contact a of the second switch 34. The contact of the relay 35 is connected to the contact of the first switch 33, 37 is the DC motor connected between the common contacts of the contacts 35a and 35b, and 38 is the motor 37.
This is a gear that rotates the cam 39 and 40 by decelerating the rotation of the cam 39 and 40.

In this case, the cam 39 is the first. Second switch 33.
The cam 40 is configured to perform choke control.

These constitute the choke control section 41.
2 is a relay, 43 is a capacitor connected between both ends of the relay 42, 44 is a relay connected between the contact a of the first switch 33 and the ground via the normal cross contact 42a of the relay 42, and 45 is the relay 44 The common contact of the capacitor 44a connected across the first switch 3
The normally open contact is connected to the contact a of No. 3, and the normally open contact is connected to the ground via the relay 42. These contacts constitute an interrupting section 46 that supplies an intermittent signal to a starter motor, which will be described later.

47 connects the power generation output supplied to the terminal 48 to a fuse 49.
A relay that inputs via a diode 50 for backflow prevention, 51 is a capacitor connected in parallel with the relay 47,
47a is the contact of the relay 47 connected between the normally open contact a of the contact 20b and the main switch 12b, and 47b is the contact of the relay 47 whose common contact is connected to the normally cross contact of the contact 44a. , these constitute an engine start detection section 52.

53 is a relay connected between the normal cross contact of contact 44a and the ground via normal cross contact 47b of relay 47, 54 is a capacitor connected between both ends of relay 53, and 55 is an ignition coil, etc. This is a terminal for connecting the ignition device, and is connected to each normally open contact a of contact 20b and contact 53a. 56 is a terminal to which a starter motor is connected;
3a is a normally open contact of relay 53 connected between terminal 55 and power supply via fuse 13; 53b
are normally open contacts of the relay 53 connected between the terminal 56 and the power source via the fuse 13, and these constitute a starter motor control section 57.

A terminal 58 is connected to the common contact side of the contact 47b, and is connected to the start position of a key switch (not shown).

In the circuit configured as described above, in order to automatically start the engine, the common contacts of the main switches 12a and 12b are switched to the contact a side to set the main switches 12a and 12b.

In this state, when the trigger switch 15 is momentarily closed by a timer or the like (not shown) as in the case of FIG. - Main switch 12 a - Trigger switch 15 - Neutral switch 16 - Main relay 17 - Ground path is formed, and main relay 17 operates.

When the main relay 17 operates, the timer part 25 starts timing operation because the contact 17a closes, and the main relay 17 is self-held by the path of the contact 17a-contact 32a-contact 20a-main relay 17. Ru.

Moreover, when the main relay 17 is activated, the motor 37 is connected to the motor 37 by the path of contact 17a-contact 20C-first switch 33-contact 35b-motor 37-contact 35a-ground.
rotates in the normal direction, and the gear 38 rotates the cams 39 and 40 to the right to move to the position shown by the dotted line. In this case, when the cam 40 rotates to the right, the choke valve mechanically closes. I'm drawn into it.

Also, when the cam 39 rotates to the right, the first. The COMOS contacts of the second switches 33 and 34 are respectively switched to the contact a side, and the motor 37 is stopped.

On the other hand, when the first switch 33 switches to the contact a side, the first
Since power is supplied to the relay via switch 33 and contact 42a, the relay operates and its contact 4
4a is switched.

As a result, the relay 42 is operated by the power supplied through the contact 44a, and the contact 42a opens and the relay 44 is restored.

In this case, the relays 42, 45 are connected in parallel with relatively large capacity capacitors 43, 45, so they perform a delay operation and alternately operate every few seconds to provide an intermittent output through the contact 47b. and supplies it to the relay 53.

When the relay 53 is activated by the output of the interrupter 46, power is supplied to the ignition coil and starter motor through its contacts 53a and 53b, and the engine is started.

When the power generation output (not shown) rises to a predetermined value due to engine startup, a relay 47 connected to the power generation output via a fuse 49 and a backflow prevention diode 50 is activated to detect that the engine has started.

When the relay 47 is activated in this way, its contact 47a
, 47b are switched, and the capacitor 54 causes the parallel-connected relay 53 to recover with a delay and opens the contacts 53a and 53b.

This delay operation is to ensure engine starting.

Therefore, the ignition current and starter motor current supplied via contacts 53a and 53b are cut off, and the starter motor stops operating.

On the other hand, when the contact 47a of the relay 47 closes, the main switch 12b is already closed, so the relay 2
0 operates and switches its contacts 20a, 20b, 20C.

As a result, the ignition current is maintained by switching the contact 20b, thereby preventing the influence of the opening operation of the contact 53a.

Further, when the contact 20a is switched, the self-holding of the main relay circuit is switched from the timer part 25 to the first thermoswitch 22.

Further, the contact 20C is switched and the operation of the interrupting section 46 is stopped.

When the engine continues to rotate after completing this operation and performing the choke operation, the engine temperature gradually increases.

Then, once the temperature reaches a point where no choke action is required,
In order for the second thermo switch 23 to close, the second switch 3
Power is supplied to the relay 35 via 4, and its contact 35
a and 35b are switched, the direction of power supply to the motor 37 is reversed, and the motor 37 performs reverse rotation.

As a result, the cams 39 and 40 are rotated to the left, that is, the cams 39 and 40 are restored and the choke is returned to its original state. Second switch 33
, 34 are restored to the illustrated state and the motor 37 is stopped.

When the engine temperature rises to a predetermined value by continuing the idling state for a predetermined time in this manner, the first thermoswitch 22 opens, releases the self-holding of the main relay 17, and opens its contact 17a to stop the engine.

Therefore, in this state, if the engine is running at a water temperature of, for example, 70~
Since the temperature is at an appropriate temperature of 80°C, subsequent starts can be started quickly.

Therefore, the contacts 20b and 53a constitute an ignition switch.

Although the above explanation is based on the case where the engine is started by one operation of the starter motor, it is not always possible to start a car as smoothly as this.

The following describes operations when the engine starts due to multiple starter motor operations and when the engine does not start due to engine trouble.

First, the first starter motor operation, that is, the intermittent section 46
If the engine does not start within the several seconds of current supplied to the starter motor via the starter motor control section 57, a pause period of several seconds is provided by the above-mentioned intermittent section 46, and then a similar operation as mentioned above is provided. Repeat the operation to start the engine.

The reason for providing this pause period is to restore the output of the battery used as a power source, evaporate the wetness of the plug caused by inhaling too much rich mixed gas, and ensure smooth starting, as well as to protect the starter motor. belongs to.

Next, if the engine does not start despite performing the starter motor operations described above in sequence, the main relay 17
The timer part 25, which has been performing a timing operation since the start of the engine, defines the limit of the starter motor's operation when the engine does not start.

That is, when the timer part 25 reaches the set time, the relay 32 is activated and its contact 32a is opened.
The self-holding circuit of the main relay 17 is cut off to stop all operations.

This is to prevent the battery and starter motor from being damaged if the starter motor is operated for a long time despite engine trouble, making it impossible to start the engine again.

Furthermore, if the engine that has been started once stops within the set time of the timer section 25, the relay 47 of the start detection section 52 is activated and the circuit switching section 24 is restored. The circuit switches to the starting circuit and begins operations similar to those described above to start the engine.

However, in this case, if a slow start operation is performed after the engine stops, the engine and starter motor will lose inertia.
Since the gear continues to rotate to some extent, problems occur in the meshing of the gear with the starter motor.

For this purpose, a relatively large capacity capacitor is connected in parallel with the relay 47, and a diode 50 for preventing backflow is installed to prevent the charge of the capacitor 51 from flowing to the generator side.
By providing this, the relay 47 is restored with a delay, thereby solving the above-mentioned problem.

Further, if the engine is not started due to engine trouble and the operation of the circuit is stopped due to the operation of the timer section 25, the choke is in a retracted state.

Therefore, after the trouble is resolved, the main switch 12a,
12b is restored by operating the normal cross contact of the main switch 12a.The relay 35 is activated by the route between the switch 34 and the relay 35, and its contacts 35a, 35
The motor 37 performs reverse rotation by switching b.

As a result, the cams 39 and 40 are restored and the choke valve is returned, and the cam 39 stops when the second switch 34 opens.

Note that if the driver accidentally turns the key switch to the start position (starting operation position) while the engine is running, the gears will normally mesh and cause a malfunction.

In this embodiment, the start detection section 52 is operating while the engine is rotating, so the contact 47b of the relay 47 is open, and even if the key switch is placed in the start position, the starter motor control section will not operate, so the starter motor will not operate. does not rotate.

However, in order to do this, in the current automobile circuit, it is necessary to connect the start terminal to the common side of the contact 47b as shown in FIG.

FIG. 3 shows still another embodiment of the automatic engine starting circuit according to the present invention, in particular, the timer section 25 that was used to perform timing operations was changed to set an upper limit by counting cell operations. This is what I did.

In this figure, the same parts as in Figure 2 are designated by the same symbols.
A diode 59 is inserted between the relay 42 and the contact 44a to prevent reverse current flowing through the capacitor 43.

60 is a rotary switch wiper, contact 20
It is connected to the normal cross contact point a.

61 is the fixed contact of the rotary switch commonly connected to the normally open contact a of contact 17H, 62 is the count coil of the rotary switch connected between the anode side of the diode 59 and the ground, and 63 is the a of the switch 34.
A reset coil of the rotary switch connected between the contacts and ground, 64 is a neutral switch, which connects the main relay 17 to ground only in the neutral position.

65 is an indicator lamp connected between the B contact of the neutral switch 64 and the A contact of the main switch 12a.

In the circuit configured as described above, when the intermittent section 46 that controls the starter motor performs an intermittent operation, that is, a starting operation and enters a rest period, the relay 44 is activated and the contact 44a is switched to the normally open side.

As a result, the count coil 6 of the rotary switch is
2, current will flow through wiper 6 every time the starting operation is performed.
0 walks on the sidewalk one after another.

In this case, for example, when the engine starts after three starting operations, the wiper 60 connects to the third fixed contact 61.
When the wiper 60 stops at the position , and the thermo switch 23 closes, current flows through the reset coil 63 and the wiper 60 is restored.

On the other hand, if the engine does not start even after a large number of cell operations, the wiper 60 sequentially advances according to the signal from the intermittent section 46 until the starting operation reaches a predetermined number of times (six times in FIG. 3). At the same time, the fixed contact 61a is not commonly connected.

As a result, the current supplied to the main relay 17 from the contact 17a via the fixed contact 61, the wiper 60, and the contact 20a of the rotary switch is cut off, and the main relay 17 is restored and all operations are stopped.

Therefore, when the wiper 60 advances to the fixed contact 61a in this way, there is a problem with the engine, etc., and the timer part 25 detects the upper limit of the number of starting operations and stops all subsequent operations. This prevents damage to the battery and starter motor.

In the above embodiment, a portion of the current flowing through the relay 42 is used to count the rotary switch.
It goes without saying that counting can be performed using signals from other parts.

On the other hand, the neutral switch 64 uses a two-contact type switch, unlike the case shown in Fig. 2, and when an attempt is made to automatically start the engine by switching the main switch 12a to the A contact side, the gear is in the neutral position. It lights up only when it is in a position other than the above, indicating that the setting for automatic start is insufficient.

Further, when the automatic start is performed with the gear set to a position other than the neutral position, the neutral switch 64 disconnects the main relay 17 from the ground to prevent an accident in which the vehicle starts moving unattended.

In addition, in such a circuit configuration, the thermo switch 2
If you try to start the car without using the engine key before 2 is activated, the main relay 17 will be disconnected by the neutral switch 64 the moment the gear is moved from the neutral position, so the main relay 17 will be restored. In order to cut off all power, the engine stops and prevents the car from starting.

Therefore, by performing such an operation, vehicle theft and accidents due to steering wheel locking are prevented.

As explained above, the above-described circuit can provide great effects when applied to automobiles that require choke operation.

Note that in the embodiment described above, the trigger switch 15
Although only the case where the control is controlled by a separate timer has been described, the present invention is not limited to this, and the same applies to cases where direct control by hand or control via a wired/wireless transmission path is used. You can get the following effect.

Further, in the above embodiment, only the case where a relay is used as the switching element has been described, but the present invention is not limited to this, and similar effects can be obtained even if a semiconductor element such as a transistor is used.

Furthermore, in the second embodiment described above, the present invention was applied to an automobile that requires manual choke operation, but when the accelerator pedal is depressed, the choke is locked and the engine temperature decreases as the engine is idling. It goes without saying that when applied to a vehicle in which the lock is released by depressing the accelerator pedal again after the choke has risen to a predetermined value, a similar effect can be obtained by partially changing the choke control section 41. stomach.

Furthermore, in the above embodiments, only the case where a thermoswitch is used as a switching element for detecting that the temperature of the engine has risen to a predetermined temperature has been described, but a switching element that turns off after a predetermined period of time may also be used.

As explained above, according to the automatic engine starting circuit according to the present invention, the engine can be reliably started by a trigger signal, and since the engine automatically stops when idling is completed, subsequent starting and departure are prevented. It can be done quickly.

Further, according to the present invention, since the starting operation is performed intermittently for a short time, starting errors are extremely reduced, and damage to the battery and starter motor is prevented.

Furthermore, the present invention has various excellent effects such as preventing a long starting operation due to engine trouble and preventing the starter motor from operating when the engine is rotating.

[Brief explanation of the drawing]

FIG. 1 is a schematic circuit diagram of an automatic engine starting circuit according to the present invention, FIG. 2 is a specific circuit diagram of an embodiment of the automatic engine starting circuit according to the present invention, and FIG. 3 is a schematic circuit diagram of an automatic engine starting circuit according to the present invention. FIG. 7 is a circuit diagram showing another embodiment. 1...Diode, 2...Relay 3
... Capacitor, 4 ... Power supply, 5 ...
...Neutral switch, 6...Trigger switch, 7...Main relay, 8...Timer, 9...Relay, 10...Cell motor , 11...Thermo switch, 12 a, 1
2 b... Main switch, 13...
Fuse, 15...Trigger switch, 16...
... Neutral switch, 17 ... Main relay 18 ... Capacitor, 19 ... Part of main relay, 20 ... Relay, 22 ... First
Thermoswitch, 23...Second thermoswitch, 24...Circuit switching unit, 25...Timer part, 26...Transistor, 27...・
...Diode, 28...Zener diode, 32...Relay, 33°34...1st. 2nd switch, 35...Relay, 37...
・Motor, 38...Gear, 39.40...
...Cam, 41...Choke control section, 42.4
4... Relay, 46... Intermittent part, 47
...Relay, 52...Start detection section, 5
3... Relay, 57... Cell motor control unit, 58... Terminal, 59... Diode, 60... Wiper, 61... ...Fixed contact, 62... Count coil, 63...
... Reset coil, 64 ... Neutral switch, 65 ... Display lamp.

Claims (1)

[Scope of utility model registration request] A main switching element that is activated and held by the output of the trigger switch, and a capacitor and a resistor that are activated by the operation of the main switching element and automatically release the operation of the main switching element if the engine does not start for a predetermined period of time. an ignition switch that supplies current to the ignition device in response to the operation of the main switching element; an intermittent section that supplies intermittent current to the starter motor in response to the operation of the main switching element; a choke control section having a DC motor that performs choke control by rotating by a predetermined rotation amount in response to the operation of the switching element; a start detection section that detects the start of the engine and stops supplying current to the starter motor; An automatic engine starting circuit comprising: a switching element that deactivates the main switching element after a predetermined temperature rise of the engine.