CN105041409B - Engine lubrication oil pressure state monitoring and protecting system - Google Patents
Engine lubrication oil pressure state monitoring and protecting system Download PDFInfo
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- CN105041409B CN105041409B CN201510403133.8A CN201510403133A CN105041409B CN 105041409 B CN105041409 B CN 105041409B CN 201510403133 A CN201510403133 A CN 201510403133A CN 105041409 B CN105041409 B CN 105041409B
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- 238000005461 lubrication Methods 0.000 title claims abstract description 21
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 239000010705 motor oil Substances 0.000 claims abstract description 72
- 230000001012 protector Effects 0.000 claims abstract description 41
- 239000003921 oil Substances 0.000 claims abstract description 40
- 239000010721 machine oil Substances 0.000 claims abstract description 19
- 238000002955 isolation Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 20
- 238000004088 simulation Methods 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 239000010687 lubricating oil Substances 0.000 description 5
- 230000006870 function Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 235000015927 pasta Nutrition 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
The present invention relates to a kind of engine lubrication oil pressure state monitoring and protecting systems, including pressure sensor, engine oil protector and at least two igniters, one-way isolation diode is equipped between each igniter and flameout switch, the ignition coil secondary of each igniter is electrically connected with spark plug respectively, correspondence is connect the ignition coil primary of each igniter with the cathode of one-way isolation diode respectively, the anode of each one-way isolation diode is connect with one end of flameout switch, the other end of flameout switch is grounded, engine oil protector is for acquiring engine rotational speed signal and engine oil pressure signal, engine oil protector is for receiving engine rotational speed signal and engine oil pressure signal, engine rotational speed signal is compared with speed setting value, engine oil pressure signal is compared with pressure set points, it is shut down for controlling engine misses.It can ensure engine will not because of lack machine oil or lubrication pressure is too small, insufficient lubrication and cause engine crankshaft etc. moving components locking damage engine.
Description
Technical field
The present invention relates to a kind of engine protection device, more particularly to a kind of engine lubrication oil pressure state monitoring and protecting system
System.
Background technology
When engine works, many driving parts are all to make high speed relative motion under the gap of very little, such as bent axle master
Axle journal and base bearing, crank-pin and the connecting-rod bearing, cam journal and camshaft bearing, piston, piston ring and cylinder wall surface, gazogene
Each kinematic pair of structure and driving gear pair etc..Although the working surface of these parts all pass through fine processing, amplification from the point of view of this
A little surfaces are rough.If not being lubricated to these surfaces, strong friction will occur between them.Metal surface
Between dry friction not only increase the power consumption of engine, accelerate the abrasion on part time job surface, but also may be due to rubbing
The heat generated is wiped by part time job surface scaling loss, causes engine that can not operate.The function of lubricating system is exactly in engine work
Continuously that quantity is enough when making, temperature clean machine oil appropriate is transported to the friction surface of whole driving members, and is rubbing
Wiping forms oil film between surface, realizes fluid friction, to reduce frictional resistance, reduce power consumption, mitigation component wear, with
Achieve the purpose that improve engine functional reliability and durability.
Existing bi-block engine lubricating system be lubricating oil pump forced feed lubrication, and the machine Oil protective system used at present with it is general
Logical single machine is the same can only to detect whether engine motor oil liquid level is less than prescribed limit, then engine is allowed to put out when pasta is less than limit
Fire.Machine oil liquid level be higher than engine oil sensor limit liquid level when engine can normal operation, but if there is lubricating oil pump leakage
Or oil leab blocking causes that the crucial lubricant housings such as engine crankshaft can not generate oil film because engine oil pressure is too small or oil film is broken
Splitting can cause engine lubrication bad and locking, the case where engine damage occur.
Invention content
In order to overcome the above-mentioned deficiency of the prior art, the present invention to provide a kind of engine lubrication oil pressure state monitoring and protecting
System, this engine lubrication oil pressure state monitoring and protecting system can ensure that engine will not be because of lacking machine oil or lubricating oil
The moving components locking damage engine such as press through small, insufficient lubrication and cause engine crankshaft.
The technical scheme is that：A kind of engine lubrication oil pressure state monitoring and protecting system, including pressure sensor,
Engine oil protector and at least two igniters, are equipped with one-way isolation diode between each igniter and flameout switch, each to light a fire
The ignition coil secondary of device is electrically connected with each spark plug respectively, and the ignition coil primary of each igniter corresponds to respectively and one-way isolation
The cathode of diode connects, and the anode of each one-way isolation diode is connect with one end of flameout switch, flameout switch it is another
End ground connection, the first input end of the engine oil protector and the ignition coil primary of igniter connect, and turn for acquiring engine
Second input terminal of fast signal, the engine oil protector is connect with pressure sensor, the engine oil pressure for acquiring oil leab
Signal, the engine oil protector for receiving engine rotational speed signal and engine oil pressure signal, by engine rotational speed signal with
Speed setting value is compared, and engine oil pressure signal is compared with pressure set points, exports control signal to flameout switch,
It is shut down for controlling engine misses.
The engine oil protector includes processor, pressure signal detection circuit, tach signal detection circuit, flame-out control electricity
Road, delay circuit, power circuit, the power circuit are used to power for engine oil protector, and the pressure signal detection circuit is used
In the engine oil pressure signal of monitoring oil leab, and processor is passed to, the input terminal and point of the tach signal detection circuit
Fiery coil primary connection, for monitoring engine rotational speed signal, and passes to processor, the processor is for receiving engine
Engine rotational speed signal is compared by tach signal and engine oil pressure signal with speed setting value, by engine oil pressure signal
It is compared with pressure set points, exports control signal to flameout control circuit, the flameout control circuit is flame-out for controlling
The closure of switch or disconnection are shut down for controlling engine misses, and the delay circuit is used to control engine misses shutdown
Delay.
The pressure signal detection circuit includes the 8th diode D8, the 8th resistance R8, the 9th resistance R9, the 5th electricity
Hold C5, the cathode of the 8th diode D8 is connect with pressure sensor, and the cathode of the 8th diode D8 is simulated through switch SW connections
The anode on ground, the 8th diode D8 is connect with one end of the 8th resistance R8, the other end of the 8th resistance R8 respectively with processor
First input end, the 9th resistance R9 one end, the 5th capacitance C5 one end connection, the other end of the 9th resistance R9, the 5th
The other end digital grounding of a capacitance C5.
The tach signal detection circuit includes the 3rd triode Q3 and resistance, capacitance, the collection of the 3rd triode Q3
Electrode is connect with one end of the second input terminal of processor, the 3rd capacitance C3 respectively, the other end of the 3rd capacitance C3 and the 3rd
Digital grounding after the emitter connection of triode Q3, the base stage of the 3rd triode Q3 respectively with one end of the 3rd resistance R3, the 5th
One end connection of one end of a resistance R5, the 4th capacitance C4, the other end connection simulation ground of the 5th resistance R5, the 3rd resistance
The other end of R3 respectively with the emitter of the 3rd triode Q3, the anode of switching diode D2-1, the 4th capacitance C4 it is another
End connection, the cathode of switching diode D2-1 and the voltage output end of ignition coil connect.
The flameout control circuit include the 4th triode Q4, three-terminal voltage-stabilizing a reference source Q1 and resistance, capacitance, the 4th
The output end VCC of the emitter connection power circuit of triode Q4, the base stage of the 4th triode Q4 respectively with the 11st resistance
One end connection of one end of R11, the 10th resistance R10, the output end of the other end connection power circuit of the 11st resistance R11
The other end of VCC, the 10th resistance R10 and the output end of processor connect, and the collector of the 4th triode Q4 is respectively with the 12nd
The anode connection of one end of a resistance R12, the 7th capacitance C7, the cathode of the 7th capacitance C7 is respectively with the 6th diode D6's
One end connection of anode, the 13rd resistance R13, the cathode digital grounding of the 6th diode D6, the 13rd resistance R13's is another
End is connect with flameout switch, the other end of the 12nd resistance R12 respectively with one end of the 6th capacitance C6, three-terminal voltage-stabilizing a reference source
The control pole of Q1 connects, and the other end of the 6th capacitance C6 is connect with cathode, the flameout switch of three-terminal voltage-stabilizing a reference source Q1, three ends
The anode connection simulation ground of voltage stabilizing a reference source Q1.
The beneficial effects of the invention are as follows：The engine oil protector of the present invention will igniting when engine oil pressure is less than limit value
The primary coil energization bonding of coil ensures that engine will not be made because machine oil or the too small insufficient lubrication of lubrication pressure is lacked
Engine is damaged at the moving components locking such as engine crankshaft, and engine oil pressure pickup can be coordinated again, engine can be avoided and opened
When dynamic, the inadequate sensor conducts situation of oil pressure makes that function is started normally to start and can make to start function normal ignition.
It is equipped with one-way isolation diode between each igniter and flameout switch, one-way isolation diode is independently placed on
A part is individually between conducting wire, fire influences engine normal ignition for preventing from mutually leaping up between several igniters.
Description of the drawings
Fig. 1 is the schematic block circuit diagram of the present invention；
Fig. 2 is the circuit diagram of the engine oil protector of the present invention.
In attached drawing, 1 is pressure sensor, and 2 be engine oil protector, and 21 be processor, and 22 be pressure signal detection circuit, 23
It is flameout control circuit for tach signal detection circuit, 24,25 be power circuit, and 3 be ignition coil, and 4 be flameout switch, and 5 are
Engine lubricating oil main oil gallery, 6 be spark plug, and 7 be engine, and 8 be flywheel, and 9 be magnetic pole, and 10 be one-way isolation diode.
Specific implementation mode
Referring to Fig. 1 and Fig. 2, a kind of engine lubrication oil pressure state monitoring and protecting system, including pressure sensor 1, machine oil
Protector 2 and at least two igniters.Pressure sensor 1 is used to monitor the pressure of engine lubricating oil main oil gallery 5.Each igniter
One-way isolation diode 10 is equipped between flameout switch 4, fire influences to start for preventing from mutually leaping up between several igniters
7 normal ignition of machine.The present embodiment igniter is two, corresponding bi-block engine 7.3 grade difference of ignition coil of each igniter
It is electrically connected with each spark plug 6, the primary corresponding cathode with one-way isolation diode 10 respectively of ignition coil 3 of each igniter connects
It connects, the anode of each one-way isolation diode 10 is connect with one end of flameout switch 4, the other end ground connection of flameout switch 4, machine oil
The first input end of protector 2 and the primary connection of the ignition coil 3 of igniter, for acquiring 7 tach signal of engine.Engine
The primary voltage generated of 7 ignition coil 3 is fluctuation, and rule is consistent with 7 rotating speed of engine.According at the beginning of 7 ignition coil 3 of engine
The voltage that grade generates can obtain 7 rotating speed of engine.Two igniters can be for acquisition signal and offer voltage, the present embodiment
A piece tach signal gathering line is only set.Second input terminal of the engine oil protector 2 is connect with pressure sensor 1, for adopting
Collect the engine oil pressure signal of oil leab, the engine oil protector 2 is for receiving 7 tach signal of engine and engine oil pressure letter
Number, 7 tach signal of engine is compared with speed setting value, engine oil pressure signal is compared with pressure set points,
Control signal is exported to flameout switch 4, engine 7 is flame-out to shut down for controlling.The engine oil protector 2 include processor 21,
Pressure signal detection circuit 22, tach signal detection circuit 23, flameout control circuit 24, delay circuit, power circuit 25, it is described
Power circuit 25 is used to power for engine oil protector 2, and the pressure signal detection circuit 22 is used to monitor the machine oil of oil leab
Pressure signal, and processor 21 is passed to, the input terminal of the tach signal detection circuit 23 is connect with 3 primary of ignition coil,
For monitoring 7 tach signal of engine, and processor 21 is passed to, the processor 21 is for receiving 7 tach signal of engine
And engine oil pressure signal, 7 tach signal of engine is compared with speed setting value, engine oil pressure signal is set with pressure
Definite value is compared, and exports control signal to flameout control circuit 24, the flameout control circuit 24 is for controlling flameout switch 4
Closure or disconnection, engine 7 is flame-out to shut down for controlling, the delay circuit be used to control engine 7 it is flame-out shut down prolong
When.Flameout switch 4 is the energization bonding of the primary coil for controlling ignition coil 3.Engine oil protector 2 is in 7 machine oil of engine
By the primary coil energization bonding of ignition coil 3 when pressure is less than limit value.Magnetic pole 9 is installed on flywheel 8, and magnetic pole 9 is more with winged
The magnetic pole 9 of 8 rotation of wheel, rotation is that ignition coil 3 provides the magnetic flux of variation for the realization igniting of ignition coil 3.Delay circuit can
It to be arranged outside processor 21, can also be arranged in processor 21, delay function is realized by processor 21.The processor 21 can
To use microcontroller.The processor 21 of the present embodiment uses the singlechip chip of model PIC12F609.
The power circuit 25 is powered for exporting stable voltage VCC to engine oil protector 2.The input of power circuit 25
End can also be powered with the exchange output of external vehicle power supply or direct current output by the voltage output end of ignition coil 3.When
When the external vehicle-mounted AC power of input terminal or Vehicular direct-current power supply of power circuit 25, power circuit 25 may be used DC-DC and turn
It changes power module or AC-DC conversion electric powers module and external AC power or DC power supply is converted into stable voltage VCC to machine
Oil guard device 2 is powered.When the input terminal of power circuit 25 is powered by the voltage output end of ignition coil 3, power circuit 25
Can be designed to following circuit：The power circuit 25 includes the 2nd triode Q2, zener diode DW and resistance, capacitance,
The base stage of the 2nd triode Q2 is connect with the cathode of one end of the 1st resistance R1, zener diode DW respectively, voltage stabilizing two
The anode of pole pipe DW is connect with the anode of the 1st diode D1, the cathode connection simulation ground of the 1st diode D1, two pole of voltage stabilizing
The positive digital grounding of pipe DW, the other end of the 1st resistance R1 respectively with one end of the 2nd resistance R2, the 2nd switching diode
The cathode of D2-2 connects, and the cathode of the 2nd switching diode D2-2 is connect with the voltage output end of ignition coil 3, the 2nd resistance
The other end of R2 is connect with the collector of the 2nd triode Q2, the emitter of the 2nd triode Q2 respectively with the 1st capacitance C1
Anode, one end of the 2nd capacitance C2, power circuit 25 output end VCC, processor 21 the positive terminals VDD connections of power supply,
The cathode of 1st capacitance C1, the other end of the 2nd capacitance C2, processor 21 power supply bear terminals VSS digital groundings.
The pressure signal detection circuit 22 include the 8th diode D8, the 8th resistance R8, the 9th resistance R9, the 5th
The cathode of capacitance C5, the 8th diode D8 are connect with pressure sensor 1, and the cathode of the 8th diode D8 is through switch SW connection moulds
The anode on quasi- ground, the 8th diode D8 is connect with one end of the 8th resistance R8, the other end of the 8th resistance R8 respectively with processing
One end connection of the first input end of device 21, one end of the 9th resistance R9, the 5th capacitance C5, the other end of the 9th resistance R9,
The other end digital grounding of 5th capacitance C5.
The tach signal detection circuit 23 includes the 3rd triode Q3 and resistance, capacitance, the 3rd triode Q3's
Collector is connect with one end of the second input terminal of processor 21, the 3rd capacitance C3 respectively, the other end of the 3rd capacitance C3 with
Digital grounding after the emitter connection of 3rd triode Q3, the base stage of the 3rd triode Q3 respectively with the 3rd resistance R3 one
One end connection at end, one end of the 5th resistance R5, the 4th capacitance C4, the other end connection simulation ground of the 5th resistance R5, the 3rd
The other end of a resistance R3 respectively with the emitter of the 3rd triode Q3, the anode of switching diode D2-1, the 4th capacitance C4
Other end connection, the cathode of switching diode D2-1 connect with the voltage output end of ignition coil 3.
The flameout control circuit 24 include the 4th triode Q4, three-terminal voltage-stabilizing a reference source Q1 and resistance, capacitance, the 4th
The output end VCC of the emitter connection power circuit 25 of a triode Q4, the base stage of the 4th triode Q4 respectively with the 11st electricity
One end of one end, the 10th resistance R10 for hindering R11 connects, the output of the other end connection power circuit 25 of the 11st resistance R11
Hold VCC, the other end of the 10th resistance R10 connect with the output end of processor 21, the collector of the 4th triode Q4 respectively with
The anode connection of one end of the 12nd resistance R12, the 7th capacitance C7, the cathode of the 7th capacitance C7 respectively with the 6th diode
One end connection of the anode of D6, the 13rd resistance R13, the cathode digital grounding of the 6th diode D6, the 13rd resistance R13's
The other end is connect with flameout switch 4, the other end of the 12nd resistance R12 respectively with one end of the 6th capacitance C6, three-terminal voltage-stabilizing base
The control pole of quasi- source Q1 connects, and the other end of the 6th capacitance C6 is connect with the cathode of three-terminal voltage-stabilizing a reference source Q1, flameout switch 4,
The anode connection simulation ground of three-terminal voltage-stabilizing a reference source Q1.
The operation principle of the present invention is that：The processor 21 of engine oil protector 2 handles the tach signal of engine 7 and realization is prolonged
Shi Gongneng.Engine oil protector 2 is when 7 engine oil pressure of engine is less than limit value by the primary coil energization bonding of ignition coil 3.Hair
Turn in 600rpm or so when motivation 7 starts, at this moment machine oil revolution speed is relatively low, and engine oil pressure is also corresponding very low.General 7 turns of engine
When speed is in 500-800rpm, engine 7 is igniting startup stage.If 7 rotating speed of engine increases after normal operation, machine oil
Revolution speed also accordingly increases, and engine oil pressure can also increase.Due to being changed to engine oil pressure pickup 1 from fuel level sensor
Afterwards, it may appear that engine 7 on startup 7 main oil gallery inner engine oil pressure of engine be less than normal operation when engine oil pressure, in order to
Adequately protect engine 7, and the limitation of engine oil pressure pickup 1 has been selected in engine oil pressure when engine 7 starts with engine 7 just
Often between engine oil pressure when operation, it thus will appear engine 7 on startup and be unable to normal ignition, in order to make engine 7
Energy normal ignition, is provided with the program that can ensure normally to start in engine oil protector 2：Engine oil protector 2 is sent out for receiving
7 tach signal of engine is compared, by oil pressure by 7 tach signal of motivation and engine oil pressure signal with speed setting value
Force signal is compared with pressure set points, judges the operating status of engine 7.If engine oil protector 2 detects oil pressure
Less than limit value, that is, pressure set points, when 7 rotating speed of engine is less than the first speed setting value 800rpm, engine oil protector 2 is judged
Engine 7 is in igniting startup stage, then engine oil protector 2 does not generate protection act and do not allow the primary coil of ignition coil 3
Energization bonding enables 7 normal ignition of engine.First speed setting value 800rpm is the corresponding machine of tradeoff 7 each rotating speed of engine
It is fixed that the selected system of oil pressure combination oil pressure sensor is come.When engine oil protector 2 detect oil pressure be less than limit value i.e. pressure set points,
When 7 rotating speed of engine is more than second 815 ± 15rpm of speed setting value, engine oil protector 2 judges that engine 7 is in normal fortune
Row order section, 2 slow 1.7S of engine oil protector generate protection act i.e. by the primary coil energization bonding of ignition coil 3.Engine 7 opens
Rotating speed will rise rapidly the tachometer value of client's adjustment after dynamic, and 1.7S is to ensure that 7 good startup of engine, too bob are dynamic
Machine 7 is possible to the case where cannot normally starting occur；If when too long 7 oil pressure of engine less than limit value engine oil protector 2
Protection act is not generated, engine 7 can be damaged because of insufficient lubrication.When 7 normal operation of engine, oil pressure sensor sense
Oil pressure should be arrived then to protect immediately less than limit value engine oil protector 2, and protection shape is constantly in before engine 7 is shut down not successfully
State.When rotating speed is maintained at the tachometer value of client's adjustment（Allow the fluctuation for having slight）, engine 7 is in normal operating phase.
Claims (5)
1. a kind of engine lubrication oil pressure state monitoring and protecting system, it is characterised in that：Including pressure sensor, engine oil protector
With at least two igniters, one-way isolation diode, the ignition lead of each igniter are equipped between each igniter and flameout switch
Circle time grade is electrically connected with each spark plug respectively, and the ignition coil primary of each igniter is corresponding negative with one-way isolation diode respectively
Pole connects, and the anode of each one-way isolation diode is connect with one end of flameout switch, the other end ground connection of flameout switch, described
The first input end of engine oil protector and the ignition coil primary of igniter connect, described for acquiring engine rotational speed signal
Second input terminal of engine oil protector is connect with pressure sensor, the engine oil pressure signal for acquiring oil leab, the machine
Oil guard device is for receiving engine rotational speed signal and engine oil pressure signal, and by engine rotational speed signal and speed setting value
It is compared, judges the operating status of engine, while engine oil pressure signal being compared with pressure set points, output control
Signal processed is shut down to flameout switch for controlling engine misses；The pressure set points are located at machine oil when engine start
Between engine oil pressure when pressure and engine normal operation, if engine oil protector detects that oil pressure is less than pressure set points,
When engine speed is less than the first speed setting value, engine oil protector judges that engine is in igniting startup stage, then machine oil
Protector does not generate protection act and does not allow the primary coil energization bonding of ignition coil, makes to start function normal ignition；Work as machine
Oil guard device detects that oil pressure is less than pressure set points, and when engine speed is more than the second speed setting value, engine oil protector is sentenced
Break and engine and be in normal operating phase, the slow set period of time of engine oil protector generate protection act be will ignition coil just
Grade coil energization bonding；When engine normal operation, when oil pressure sensor senses that oil pressure is less than pressure set points, machine oil is protected
Shield device generates protection act immediately, and is constantly in guard mode before engine is shut down not successfully.
2. engine lubrication oil pressure state monitoring and protecting system according to claim 1, it is characterised in that：The machine oil is protected
Shield device includes processor, pressure signal detection circuit, tach signal detection circuit, flameout control circuit, delay circuit, power supply electricity
Road, the power circuit are used to power for engine oil protector, and the pressure signal detection circuit is used to monitor the machine of oil leab
Oil pressure force signal, and processor is passed to, the input terminal of the tach signal detection circuit is connect with ignition coil primary, is used for
Engine rotational speed signal is monitored, and passes to processor, the processor is for receiving engine rotational speed signal and oil pressure
Engine rotational speed signal is compared with speed setting value, engine oil pressure signal and pressure set points is compared by force signal
Compared with exporting control signal to flameout control circuit, the flameout control circuit is used to control closure or the disconnection of flameout switch, uses
It is shut down in control engine misses, the delay circuit is used to control the delay of engine misses shutdown.
3. engine lubrication oil pressure state monitoring and protecting system according to claim 2, it is characterised in that：The pressure letter
Number detection circuit includes diode D8, resistance R8, resistance R9, capacitance C5, and the cathode of diode D8 is connect with pressure sensor, and two
The cathode of pole pipe D8 simulates ground through switch SW connections, and the anode of diode D8 is connect with one end of resistance R8, and resistance R8's is another
End is connect with one end of the first input end of processor, one end of resistance R9, capacitance C5 respectively, the other end, the capacitance of resistance R9
The other end digital grounding of C5.
4. engine lubrication oil pressure state monitoring and protecting system according to claim 2, it is characterised in that：The rotating speed letter
Number detection circuit includes triode Q3 and resistance, capacitance, the collector of triode Q3 respectively with the second input terminal of processor,
One end of capacitance C3 connects, digital grounding after the other end of capacitance C3 is connect with the emitter of triode Q3, the base of triode Q3
Pole is connect with one end of one end of resistance R3, one end of resistance R5, capacitance C4 respectively, the other end connection simulation ground of resistance R5,
The other end of resistance R3 is connect with the other end of the emitter of triode Q3, the anode of switching diode D2-1, capacitance C4 respectively,
The cathode of switching diode D2-1 and the voltage output end of ignition coil connect.
5. engine lubrication oil pressure state monitoring and protecting system according to claim 2, it is characterised in that：The flame-out control
Circuit processed includes triode Q4, three-terminal voltage-stabilizing a reference source Q1 and resistance, capacitance, and the emitter of triode Q4 connects power circuit
Output end VCC, the base stage of triode Q4 connect with one end of one end of resistance R11, resistance R10 respectively, and resistance R11's is another
The output end VCC of end connection power circuit, the other end of resistance R10 and the output end of processor connect, the current collection of triode Q4
Pole is connect with the anode of one end of resistance R12, capacitance C7 respectively, the cathode of capacitance C7 respectively with the anode of diode D6, resistance
One end of R13 connects, and the cathode digital grounding of diode D6, the other end of resistance R13 is connect with flameout switch, resistance R12's
The other end is connect with the control pole of one end of capacitance C6, three-terminal voltage-stabilizing a reference source Q1 respectively, and the other end of capacitance C6 and three ends are steady
Press cathode, the flameout switch connection of a reference source Q1, the anode connection simulation ground of three-terminal voltage-stabilizing a reference source Q1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510403133.8A CN105041409B (en) | 2015-07-10 | 2015-07-10 | Engine lubrication oil pressure state monitoring and protecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510403133.8A CN105041409B (en) | 2015-07-10 | 2015-07-10 | Engine lubrication oil pressure state monitoring and protecting system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105041409A CN105041409A (en) | 2015-11-11 |
| CN105041409B true CN105041409B (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510403133.8A Expired - Fee Related CN105041409B (en) | 2015-07-10 | 2015-07-10 | Engine lubrication oil pressure state monitoring and protecting system |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109884922B (en) * | 2019-02-14 | 2021-06-22 | 杰克缝纫机股份有限公司 | Method and device for adjusting rotating speed of sewing machine, computer equipment and storage medium |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4054117A (en) * | 1976-01-28 | 1977-10-18 | Palmer Howard J | Oil pressure failure protection device for internal combustion engines |
| JP3896833B2 (en) * | 2001-09-28 | 2007-03-22 | スズキ株式会社 | Control device for 4-cycle engine mounted on vehicle |
| CN201367928Y (en) * | 2009-02-24 | 2009-12-23 | 华南农业大学 | Automotive petrol engine alarming protection system based on engine oil pressure |
| CN202851151U (en) * | 2012-10-13 | 2013-04-03 | 湖北同发机电有限公司 | Protection controller of diesel generating set |
| CN203130185U (en) * | 2013-01-25 | 2013-08-14 | 李从金 | Flame-out protection device of multi-cylinder diesel engine |
| CN204941641U (en) * | 2015-07-10 | 2016-01-06 | 隆鑫通用动力股份有限公司 | Gasoline engine lubricating oil pressure state monitoring and protecting device |
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| CN105041409A (en) | 2015-11-11 |
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