CN208534673U - A kind of engine start circuit - Google Patents
A kind of engine start circuit Download PDFInfo
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- CN208534673U CN208534673U CN201821082493.8U CN201821082493U CN208534673U CN 208534673 U CN208534673 U CN 208534673U CN 201821082493 U CN201821082493 U CN 201821082493U CN 208534673 U CN208534673 U CN 208534673U
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Abstract
The utility model discloses a kind of engine start circuits, for enough voltage being provided in engine start and work for plug ignition, the engine start circuit includes: firing circuit, will access the boost in voltage of firing circuit to the ignition voltage of spark plug；Magneto circuit accesses firing circuit by first switch；DC power supply circuit, including DC power supply and second switch, the DC power supply access firing circuit by second switch；Electronic control circuit to obtain the working condition of engine, and issues control signal；Switching circuit receives control signal and controls the on-off of DC power supply circuit and magneto circuit by the opening and closing of control first switch and the second switch；Motor circuit is started, including the starting motor being installed on engine, the motor circuit that starts is connected with electronic control circuit and receives control signal to control the start and stop of motor.
Description
Technical field
The present invention provides a kind of engine start circuit for lighting a fire in the engine of gasoline engine to spark plug.
Background technique
Currently, the engine of gasoline engine is started by pulling, then powered by magneto and to spark plug
Igniting.Magneto is the small-sized alternating current generator that magnetic field is generated by permanent magnet, but at the starting initial stage of gasoline engine, due to
The revolving speed of engine is lower and unstable, therefore the voltage that will lead to magneto offer is lower and unstable.In this case, fiery
The energy of spark plug ignition is just not achieved most preferably, especially starts under low temperature, cold state and just more has some setbacks.
Summary of the invention
To solve the above-mentioned problems, the invention proposes a kind of engine start circuits, in engine start and work
As when provide enough voltage for plug ignition, the engine start circuit includes: firing circuit, to by access point
The boost in voltage of ignition circuit to spark plug ignition voltage；Magneto circuit is connected to firing circuit；DC power supply circuit, packet
DC power supply is included, the DC power supply is connected to firing circuit；Motor circuit is started, including the starting electricity being installed on engine
Machine；In engine start-up phase, the starting motor work is started with booster engine, and the magneto circuit fails,
DC power supply circuit works for plug ignition；In the engine work stage, the starting motor stops working, described
DC power supply circuit failure, magneto circuit work for plug ignition.
As a further improvement of the present invention, the engine start circuit further include: electronic control circuit, to obtain
The working condition of engine, and control signal is issued, the starting motor circuit is connected with electronic control circuit and receives control
Signal processed starts the start and stop of motor to control.
As a further improvement of the present invention, the engine start circuit further includes switching circuit, and the magnetoelectricity is electromechanical
Firing circuit is accessed by first switch in road, and the DC power supply circuit further includes second switch, and the DC power supply passes through the
Two switch access firing circuits, the switching circuit receive control signal and by the opening and closings of control first switch and the second switch
To control the on-off of DC power supply circuit and magneto circuit；In engine start-up phase, the electronic control circuit controls institute
It states starting motor work to start with booster engine, and the switching circuit controls the second switch closure, first switch
It disconnects, the DC power supply circuit conducting is for plug ignition；In the engine work stage, the electronic control circuit
Control starts motor and stops working, and the switching circuit controls the first switch closure, second switch disconnects, the magnetic
Motor circuit is connected for plug ignition.
As a further improvement of the present invention, the firing circuit includes the first level-one connecting with the magneto circuit
Coil, the second level-one coil being connect with DC power supply circuit and the secondary coil being connect with spark plug, the first level-one line
Circle and the second level-one coil are grounded respectively.
As a further improvement of the present invention, the firing circuit includes and the magneto circuit and DC power supply circuit
The level-one coil being all connected with and the secondary coil connecting with spark plug, the level-one coil are divided into two-way and are grounded respectively.
As a further improvement of the present invention, the switching circuit includes the first of electromagnet and control magnet switching
Switch element, the first switching element include the first control terminal, and the control signal includes switching signal；First control
End is connect to receive switching signal and control being turned on or off for first switching element, to realize electromagnet with electronic control circuit
On-off.
As a further improvement of the present invention, the first switch and second switch are single-pole double-throw switch (SPDT), and are had
One end is hanging, and the electromagnet is arranged close to the first switch and second switch；When the electromagnet is powered, described first is opened
Shutdown is opened, second switch conducting；When the electromagnet powers off, the first switch conducting, second switch is disconnected.
As a further improvement of the present invention, the firing circuit includes second switch element, the second switch element
It is connected with DC power supply circuit to control the spark rate that DC power supply lights a fire to spark plug；The second switch element
Including the second control terminal, the control signal includes spark rate signal, and second control terminal is connect with electronic control circuit
To receive igniting frequency signal and control being turned on or off for second switch element.
As a further improvement of the present invention, the second switch element is connected to DC power supply by the firing circuit
On circuit.
As a further improvement of the present invention, the magneto circuit accesses firing circuit by first diode, described
DC power supply circuit further includes the second diode, and the DC power supply accesses firing circuit by the second diode；In engine
Starting stage, the electronic control circuit control are started motor work and are started with booster engine, second diode current flow,
First diode disconnects, and the DC power supply circuit work is for plug ignition；In the engine work stage, the electricity
Sub- control circuit control starts motor and stops working, and the first diode conducting, the second diode disconnects, and the magnetoelectricity is electromechanical
Road works for plug ignition.
As a further improvement of the present invention, the firing circuit includes and the magneto circuit and DC power supply circuit
The level-one coil being all connected with and the secondary coil being connect with spark plug, the level-one coil ground connection.
As a further improvement of the present invention, the DC power supply circuit further includes having ignition control circuit to control igniting
Frequency, the ignition control circuit are connected between DC power supply and the second diode.
As a further improvement of the present invention, the starting motor circuit includes starting motor and controlling starting motor to lead to
Disconnected third switch element, the third switch element include third control terminal, and the control signal includes motor control signal；
The third control terminal connect with electronic control circuit with receive motor control signal and control third switch element conducting or
It disconnects.
As a further improvement of the present invention, the electronic control circuit is connected to obtain and start with the starting motor
The working condition of motor.
As a further improvement of the present invention, the DC power supply circuit further includes booster circuit, and the booster circuit connects
It is connected between DC power supply and firing circuit to boost to DC power supply.
Beneficial effects of the present invention: by switching magneto circuit and DC power supply circuit, when engine starts to start,
It is driven using DC power supply, to can ensure that spark plug can obtain enough ignition voltages, and under low temperature, cold state
It also can normal starting；After engine work, and switch to the driving of magneto voltage, more environmental protection and energy saving.So as to convenient
User uses.
Detailed description of the invention
Fig. 1 is the schematic diagram of the first embodiment of the invention.
Fig. 2 is the schematic diagram of second of embodiment of the invention.
Fig. 3 is the schematic diagram of the third embodiment of the invention.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, below in conjunction with of the invention real
The attached drawing in example is applied, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work, all should belong to protection of the present invention
Range.
In addition, duplicate label or mark may be used in various embodiments.These are repeated only for simple clear
The ground narration present invention, not representing has any relevance between the different embodiments or structure discussed.
As shown in Figure 1 to Figure 3, the present invention provides a kind of engine start circuits 100, in engine start and work
As when provide enough voltage for spark plug 10 igniting, the engine start circuit 100 includes: firing circuit 1, to will
The voltage of access firing circuit 1 rises to the ignition voltage of spark plug 10；The ignition voltage of spark plug 10 usually requires in arrival
Wan Fu, and the voltage that can be directly obtained is unable to reach such height, it is therefore necessary to need firing circuit 1 to boost；Magnetoelectricity is electromechanical
Road 2 is connected to firing circuit 1, includes magneto in the magneto circuit 2, and magneto utilizes the small of permanent magnet to be a kind of
Type alternating current generator；DC power supply circuit 3, including DC power supply 32, the DC power supply 32 are connected to firing circuit 1；At this
In embodiment, the DC power supply circuit 3 further includes having booster circuit 31, and the booster circuit 31 is connected to DC power supply 32
And between firing circuit 1 with to DC power supply 32 carry out first time boosting, firing circuit 1 so to the DC power supply after boosting into
Second of boosting of row；In the present embodiment, the DC power supply 32 is about 7.2 V, by the first time liter of booster circuit 31
After pressure, it can reach about 200 V, thus using volts up to ten thousand are reached after second of firing circuit 1 boosting；Start motor circuit, packet
The starting motor 51 being installed on engine is included, the flywheel shaft for starting motor 51 and engine or crankshaft pass through speed reducer
Structure is connected with clutch, and at engine start initial stage, the starting motor 51 drives flywheel rotation to work with booster engine；
In engine start-up phase, the work of starting motor 51 is started with booster engine, and the magneto circuit 2 fails,
The conducting of DC power supply circuit 3 is for plug ignition；In the engine work stage, the starting motor 51 stops work
Make, the DC power supply circuit 3 fails, and the conducting of magneto circuit 2 is for plug ignition.
The engine start circuit 100 further include: electronic control circuit 4, to obtain the working condition of engine, and
Control signal is issued, the starting motor circuit is connected with the electronic control circuit 4 and receives control signal to have controlled
The start and stop of dynamic motor 51.
Specifically, as shown in Figures 1 and 2, the magneto circuit 2 accesses firing circuit 1 by first switch k1, described
DC power supply circuit 3 further includes second switch k2, and the DC power supply 32 accesses firing circuit 1 by second switch k2, described
Engine start circuit 100 further includes having switching circuit, and the switching circuit receives control signal and by control first switch
The opening and closing of k1 and second switch k2 are being started with controlling access or the open circuit of DC power supply circuit 3 and magneto circuit 2
When machine starts, the second switch k2 closure, first switch k1 is disconnected, after engine work, the first switch k1
Closure, second switch k2 are disconnected.
In engine start-up phase, the electronic control circuit 4 controls the work of starting motor 51 with booster engine
It starts, and the switching circuit controls the second switch k2 closure, first switch k1 is disconnected, the DC power supply circuit 3
Conducting is for the igniting of spark plug 10；In the engine work stage, the control of electronic control circuit 4 starts motor 51 and stops
Work, and the switching circuit controls the first switch k1 closure, second switch k2 is disconnected, and the magneto circuit 2 is led
It passes to and lights a fire for spark plug 10.Since magneto can produce alternating current, thus also have corresponding frequency, and to spark plug 10 into
Row igniting.
Further, the switching circuit includes the first switching element Q1 of electromagnet 61 and control 61 on-off of electromagnet,
The first switching element Q1 includes the first control terminal, and the control signal includes switching signal；First control terminal and electricity
The sub- connection of control circuit 4 is to receive switching signal to control being turned on or off for first switching element Q1, to realize electromagnet
61 on-off.
Specifically, it further includes the first input that the switching circuit, which further includes the first power supply V1, the first switching element Q1,
End and the first output end, first output end ground connection, one end of the electromagnet 61 are connect with first input end, the other end and
First power supply V1 connection, the first power supply V1 are direct current.In the present embodiment, the first of the first switching element Q1
When control terminal does not receive switching signal, the first switching element Q1 conducting, electromagnet 61 is powered；The first control termination
When receiving switching signal, the first switching element Q1 is disconnected, and electromagnet 61 powers off.In the present embodiment, due to making electricity
Electric current to be achieved needed for magnet 61 works is smaller, therefore the first switching element Q1 is triode.
In addition, in the present embodiment, the first switch k1 and second switch k2 are single-pole double-throw switch (SPDT), and one end
Be connected on circuit, the other end it is hanging, the electromagnet 61 is arranged close to the first switch k1 and second switch k2；Also,
When the electromagnet 61 is powered, the first switch k1 is disconnected, second switch k2 connection；When the electromagnet 61 powers off, institute
First switch k1 connection is stated, second switch k2 is disconnected.So as to control magneto circuit 2 by the break-make situation of electromagnet 61
With DC power supply circuit 3.
That is, the first switching element Q1 is connected, then electromagnet 61 when first control terminal does not receive switching signal
It is powered, first switch k1 is disconnected, and second switch k2 connection, the conducting of DC power supply circuit 3 is for the igniting of spark plug 10；Described first
When control terminal receives switching signal, the first switching element Q1 is disconnected, then electromagnet 61 powers off, first switch k1 connection,
Second switch k2 is disconnected, and the conducting of magnetoelectricity source circuit is for the igniting of spark plug 10.
In addition, electromagnet 61 and first switch k1, second switch k2 in the switching circuit, be equivalent to constitute after
The structure of electric appliance, thus, if directlying adopt a relay to replace above-mentioned first switch k1, second switch k2 and electromagnet
61, then it also can reach the purpose of the present invention.
Further, the firing circuit 1 includes second switch element Q2, the second switch element Q2 and direct current
Source circuit 3 is connected to control the spark rate that DC power supply 32 lights a fire to spark plug 10.The second switch element Q2
Including the second control terminal, the control signal includes spark rate signal, and second control terminal is connect with electronic control circuit 4
To receive igniting frequency signal and control being turned on or off for second switch element Q2.The second switch element Q2 passes through control
Spark rate, so as to be the electric current with specific frequency by DC conversion.
The second switch element Q2 further includes the second input terminal and second output terminal, second input end grounding, and
Two output ends are connected on DC power supply circuit 3 by firing circuit 1.Therefore, the igniting frequency that second control terminal receives
Rate signal can control being turned on or off for second switch element Q2, thus the igniting frequency that controllable DC power supply 32 is lighted a fire
Rate.The electronic control circuit 4 obtains working condition and various parameters of engine etc., and is analyzed, to obtain a little
Fiery frequency, and export igniting frequency signal and give second switch element Q2.
In addition, since spark rate signal has certain frequency and opens second switch element Q2 constantly
It closes, so that DC power supply circuit 3 is also changed with said frequencies, thus the sparking frequency of changeable spark plug 10.
In the present embodiment, the second switch element Q2 is connected to DC power supply circuit by the firing circuit 1,
And it is arranged independently of the firing circuit 1, certainly, if the second switch element Q2 is integrated in firing circuit 1 or connects
In DC power supply circuit 3, then it also can reach the purpose of the present invention.
Further, it is described start motor circuit include start motor 51 and control start 51 on-off of motor third open
Element Q3 is closed, the third switch element Q3 includes third control terminal, and the control signal includes motor control signal；Described
Three control terminals are connect to receive motor control signal and control third switch element Q3 leads on-off with electronic control circuit 4
It opens.It starts motor 51 to be usually mounted on engine, and first the flywheel of engine is carried out before engine work
Power-assisted driving, makes its rotation, to reduce the trouble that manpower starts engine.Therefore, after engine work
Motor 51 will be started to close.
The electronic control circuit 4 is connected with the starting motor 51 to obtain the anti-of the working condition of starting motor 51
Feedback, so as to judge switching time, sparking opportunity or sparking frequency etc..
Specifically, the third switch element Q3 further includes third input terminal and third output end, the starting motor electricity
Road further includes having second source V2, and the third input terminal is connected with motor 51 is started, and starts motor 51 and is connected to the second electricity
Source V2；The third output end ground connection, and it is connected to electronic control circuit 4 simultaneously.When third switch element Q3 conducting,
The starting motor 51 starts；When the third switch element Q3 is disconnected, the starting motor 51 stops working.Described second
Power supply V2 is direct current, and second source V2 and the first power supply V1 are mutually indepedent, can also be same current source certainly.
In the present embodiment, the third switch element Q3 uses metal-oxide-semiconductor.This is because starting 51 work of motor to allow
Make to need biggish electric current, therefore uses metal-oxide-semiconductor.
Therefore, before engine start, first to start the start-up operation of motor 51, booster engine drives engine
Flywheel rotation, meanwhile, lighted a fire by DC power supply 32 to spark plug 10.DC power supply 32 is more steady compared to magnetoelectricity electromechanical source
It is fixed, it thereby may be ensured that the stabilization of ignition energy in bigger range, it is ensured that spark plug 10 can light a fire success.Engine
It works normally, then switches to magneto circuit 2, to may make that engine is normal, steady operation.
In addition, the engine start circuit 100 further includes having one drive circuit 5, the driving circuit 5 is connected to electronics
Between control circuit 4 and starting motor circuit, and signal is controlled to the starting motor circuit output motor；The driving circuit
5 are also connected between electronic control circuit 4 and second switch element Q2, and export spark rate to the second switch element Q2
Signal.
In the first embodiment of the invention, as shown in Figure 1, the firing circuit 1 includes connecting with magneto circuit 2
The first level-one coil 11, the second level-one coil 12 for being connect with DC power supply circuit 3, and the second level line being connect with spark plug 10
Circle 13.The number of turns of the secondary coil 13 is far longer than the first level-one coil 11 and the second level-one coil 12, to reach boosting
Effect.In the present embodiment, described first level-one coil, 11 one end is connect with magneto circuit 2, other end ground connection, and described second
12 one end of level-one coil is connect with DC power supply circuit 3, and the other end passes through second switch element Q2 and is grounded.In the present embodiment
In, the ground terminal of the first level-one coil 11 and the ground terminal of the second level-one coil 12 can be with mutually insulateds, can also be on-insulated.
In second of embodiment of the present invention, as shown in Fig. 2, the firing circuit 1 includes and the magneto circuit 2
And the level-one coil 11 ' being all connected with of DC power supply circuit 3 and the secondary coil 13 ' being connect with spark plug 10, i.e., the described level-one line
11 ' one end of circle are all connected with magneto circuit 2 and DC power supply circuit 3, other end ground connection.The level-one coil 11 ' has two
A ground terminal, respectively direct-current power supply earthing end and magneto ground terminal, the direct-current power supply earthing end and magneto ground terminal
Mutually insulated.In actual operation, usual magneto ground terminal is connect with outer cage, and direct-current power supply earthing end and casing are mutually exhausted
Edge.
In the first embodiment and second of embodiment, in engine start-up phase, the electronic control circuit 4 is controlled
The dynamic work of motor 51 is started with booster engine, and be simultaneously emitted by spark rate signal control second switch element Q2 conducting and
It disconnects to control the spark rate of DC power supply 32；
After judging that engine has worked normally, the electronic control circuit 4 issues switching signal and gives switch element Q1, and first
Switch k1 connection, second switch k2 are disconnected；In the engine work stage, the control of electronic control circuit 4 starts motor
51 stop working, and switch k1 is connected to, the work of magneto power circuit.
It should be noted that engine does not work normally also in engine start-up phase, then electronic control circuit 4 can not
The signal for obtaining engine work, can not also issue switching signal accordingly；In the engine work stage, engine
It works normally, then electronic control circuit 4 gets the signal of engine work, while also issuing switching signal accordingly.
Therefore, it is necessary to judge when engine has been in normal work.The following are three kinds of judgment methods: (1) can will start motor 51
Working condition feeds back to electronic control circuit 4, and electronic control circuit 4 starts the electric current of motor 51 by monitoring, when starting motor
When 51 electric current is less than threshold current, and after keeping the state several seconds, then judge that engine has worked normally；In present embodiment
In, the threshold current is 5A；(2) working condition of engine can be fed back to electronic control circuit 4, electronic control circuit 4
By monitoring the revolving speed of engine, when the revolving speed of engine is greater than threshold rotation rate, and after keeping the state several seconds, then judge to send out
Motivation has worked normally；In the present embodiment, threshold rotation rate is 1500 r/min；(3) it can be set in electronic control circuit 4
One preset time, in engine start-up phase, DC power supply circuit 3 is connected to and starts to light a fire to spark plug 10, and starts timing,
After reaching preset time, that is, judge that engine has worked normally；In the present embodiment, preset time is 2 s to 5 s；At this
In embodiment, by setting preset time, preset time is determined by experience and engine performance, thus directly switch over,
It realizes relatively simple.
The judgement to the working condition of engine can be achieved in three of the above method, certainly, if there is other judgement sides
Method can reach the purpose of the present invention as long as can achieve the effect that rationally to judge engine condition.
In the third embodiment of the invention, as shown in figure 3, the magneto circuit 2 is connect by first diode D1
Enter firing circuit 1, the DC power supply circuit 3 further includes the second diode D2, and the DC power supply 32 passes through the second diode
D2 accesses firing circuit 1；In the present embodiment, the DC power supply circuit 3 further includes ignition control circuit 33 with control point
Fiery frequency, the ignition control circuit 33 are connected between DC power supply 32 and the second diode D2.Certainly, present embodiment
In, it may have booster circuit 31 is to carry out first time boosting to DC power supply 32.
In engine start-up phase, the control of electronic control circuit 4 is started the work of motor 51 and is started with booster engine,
Since 32 voltage of DC power supply is higher than the voltage that magneto circuit 2 generates, the second diode D2 conducting, the one or two pole
Pipe D1 is disconnected, and 32 circuit of the DC power supply work is for plug ignition；After judging that engine has worked normally, the electronics
Control circuit 4 issues switching signal to booster circuit 31, and booster circuit 31 fails；In the engine work stage, the electricity
The sub- control of control circuit 4 starts motor 51 and stops working, since 32 voltage of DC power supply is lower than the electricity that magneto circuit 2 generates
Pressure, therefore the first diode D1 is connected, the second diode D2 is disconnected, and the magneto power circuit work is for spark plug
Igniting.
The firing circuit 1 includes the level-one coil being all connected with the magneto circuit 2 and DC power supply circuit 3
11 ' ' secondary coil 13 ' and with spark plug connecting ', the 11 ' ' other end of level-one coil is directly grounded.
In the third embodiment, determining engine normal starting, there are four types of modes, are specifically described below: (1)
The working condition for starting motor 51 can be fed back to electronic control circuit 4, electronic control circuit 4 starts motor 51 by monitoring
Electric current then judges engine normal work when the electric current for starting motor 51 is less than threshold current, and after keeping the state several seconds
Make；In the present embodiment, the threshold current is 5A；(2) working condition of engine can be fed back to electronic control circuit
4, electronic control circuit 4 when the revolving speed of engine is greater than threshold rotation rate, and keeps the state by the revolving speed of monitoring engine
After several seconds, then judge that engine has worked normally；In the present embodiment, threshold rotation rate 1500r/min；It (3) can be in electronics
A preset time is set in control circuit 4, in engine start-up phase, the connection of DC power supply circuit 3 and to the beginning of spark plug 10
Igniting, and start timing, after reaching preset time, that is, judge that engine has worked normally；In the present embodiment, preset time
For 2s to 5s；In the present embodiment, by setting preset time, preset time is determined by experience and engine performance, thus
It directly switches over, realizes relatively simple；(4) supply voltage of DC power supply circuit 3 can be fed back to electronic control circuit 4,
When electronic control circuit 4 detects that supply voltage of the DC power supply circuit at least three light-off periods is less than magneto circuit
After 2 voltages generated, that is, when referring to that DC power supply circuit does not discharge, determine engine normal starting.
The judgement to the working condition of engine can be achieved in above four kinds of methods, certainly, if there is other judgement sides
Method can reach the purpose of the present invention as long as can achieve the effect that rationally to judge engine condition.
In conclusion the engine start circuit 100 is commonly used in gasoline engine, and there are two types of working conditions for tool:
When engine starts to start, driven using DC power supply 32, thus can ensure that spark plug 10 can obtain enough ignition voltages,
And it also can normal starting under low temperature, cold state；After engine work, and switch to the driving of magneto voltage, compared with
For environmental protection and energy saving.So as to user-friendly.
Although not each embodiment only includes one only it should be appreciated that this specification is described according to embodiment
Vertical technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should be by specification
As a whole, the technical solutions in the various embodiments may also be suitably combined, formed it will be appreciated by those skilled in the art that
Other embodiments.
The series of detailed descriptions listed above are illustrated only for possible embodiments of the invention,
The protection scope being not intended to limit the invention, it is all without departing from equivalent embodiment made by technical spirit of the present invention or change should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of engine start circuit, for providing enough voltage in engine start and work for spark plug point
Fire, it is characterised in that: the engine start circuit includes:
Firing circuit, the boost in voltage of firing circuit will be accessed to the ignition voltage of spark plug；
Magneto circuit is connected to firing circuit；
DC power supply circuit, including DC power supply, the DC power supply are connected to firing circuit；
Motor circuit is started, including the starting motor being installed on engine；
In engine start-up phase, the starting motor work is started with booster engine, and the magneto circuit fails,
DC power supply circuit works for plug ignition；
In the engine work stage, the starting motor stops working, the DC power supply circuit failure, magneto circuit
Work is for plug ignition.
2. engine start circuit according to claim 1, it is characterised in that: the engine start circuit further include:
Electronic control circuit to obtain the working condition of engine, and issues control signal, the starting motor circuit and electronics control
Circuit processed is connected and receives control signal to control the start and stop for starting motor (51).
3. engine start circuit according to claim 2, it is characterised in that: the engine start circuit further includes cutting
Circuit is changed, the magneto circuit accesses firing circuit by first switch, and the DC power supply circuit further includes second switch,
The DC power supply accesses firing circuit by second switch, and the switching circuit receives control signal and opened by control first
The opening and closing with second switch is closed to control the on-off of DC power supply circuit and magneto circuit；
In engine start-up phase, the electronic control circuit is controlled the starting motor work and is started with booster engine, and
And the switching circuit controls the second switch closure, first switch disconnects, the DC power supply circuit conducting is for spark
Plug igniting；
In the engine work stage, the electronic control circuit control starts motor and stops working, and switching electricity
Road controls the first switch closure, second switch disconnects, and the magneto circuit conducting is for plug ignition.
4. engine start circuit according to claim 3, it is characterised in that: the firing circuit includes and the magnetoelectricity
The first level-one coil, the second level-one coil being connect with DC power supply circuit and connect with spark plug two of machine circuit connection
Grade coil, the first level-one coil and the second level-one coil are grounded respectively.
5. engine start circuit according to claim 3, it is characterised in that: the firing circuit includes and the magnetoelectricity
The level-one coil and the secondary coil being connect with spark plug that electromechanical road and DC power supply circuit are all connected with, the level-one coil point
It is grounded respectively at two-way.
6. engine start circuit according to claim 3, it is characterised in that: the switching circuit include electromagnet and
The first switching element of magnet switching is controlled, the first switching element includes the first control terminal, and the control signal includes
Switching signal；
First control terminal connect with electronic control circuit with receive switching signal and control first switching element conducting or
It disconnects, to realize the on-off of electromagnet；
The first switch and second switch are single-pole double-throw switch (SPDT), and have one end hanging, and the electromagnet is close to described
First switch and second switch setting；
When the electromagnet is powered, the first switch is disconnected, second switch conducting；
When the electromagnet powers off, the first switch conducting, second switch is disconnected.
7. engine start circuit according to claim 3, it is characterised in that: the firing circuit includes second switch member
Part, the second switch element are connected to control the igniting frequency that DC power supply lights a fire to spark plug with DC power supply circuit
Rate；The second switch element includes the second control terminal, and the control signal includes spark rate signal, second control terminal
It is connect with electronic control circuit to receive igniting frequency signal and control being turned on or off for second switch element
The second switch element is connected on DC power supply circuit by the firing circuit.
8. engine start circuit according to claim 2, it is characterised in that: the magneto circuit passes through the one or two pole
Pipe accesses firing circuit, and the DC power supply circuit further includes the second diode, and the DC power supply is connect by the second diode
Enter firing circuit；
In engine start-up phase, the electronic control circuit control is started motor work and is started with booster engine, and described the
Two diode current flows, first diode disconnect, and the DC power supply circuit work is for plug ignition；
In the engine work stage, the electronic control circuit control starts motor and stops working, the first diode
Conducting, the second diode disconnect, and the magneto circuit work is for plug ignition.
9. engine start circuit according to claim 8, it is characterised in that: the firing circuit includes and the magnetoelectricity
The level-one coil and the secondary coil connecting with spark plug that electromechanical road and DC power supply circuit are all connected with, the level-one coil connect
Ground；
The DC power supply circuit further includes having ignition control circuit to control spark rate, and the ignition control circuit is connected to
Between DC power supply and the second diode.
10. engine start circuit according to claim 2, it is characterised in that: the starting motor circuit includes starting
Motor and control start the third switch element of motor on-off, and the third switch element includes third control terminal, the control
Signal includes motor control signal；The third control terminal is connect to receive motor control signal and control with electronic control circuit
Third switch element is turned on or off.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821082493.8U CN208534673U (en) | 2018-07-09 | 2018-07-09 | A kind of engine start circuit |
| PCT/CN2018/111634 WO2020010747A1 (en) | 2018-07-09 | 2018-10-24 | Engine starting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821082493.8U CN208534673U (en) | 2018-07-09 | 2018-07-09 | A kind of engine start circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208534673U true CN208534673U (en) | 2019-02-22 |
Family
ID=65388413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821082493.8U Withdrawn - After Issue CN208534673U (en) | 2018-07-09 | 2018-07-09 | A kind of engine start circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208534673U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757265A (en) * | 2018-07-09 | 2018-11-06 | 苏州科瓴精密机械科技有限公司 | A kind of engine start circuit |
-
2018
- 2018-07-09 CN CN201821082493.8U patent/CN208534673U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108757265A (en) * | 2018-07-09 | 2018-11-06 | 苏州科瓴精密机械科技有限公司 | A kind of engine start circuit |
| CN108757265B (en) * | 2018-07-09 | 2024-01-05 | 苏州科瓴精密机械科技有限公司 | Engine starting circuit |
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| GR01 | Patent grant | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190222 Effective date of abandoning: 20240105 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190222 Effective date of abandoning: 20240105 |