CN201539310U - Automatic protecting device of automobile engine - Google Patents
Automatic protecting device of automobile engine Download PDFInfo
- Publication number
- CN201539310U CN201539310U CN2009200987516U CN200920098751U CN201539310U CN 201539310 U CN201539310 U CN 201539310U CN 2009200987516 U CN2009200987516 U CN 2009200987516U CN 200920098751 U CN200920098751 U CN 200920098751U CN 201539310 U CN201539310 U CN 201539310U
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- engine
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- motor car
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- safety device
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Abstract
The utility model discloses an automatic protecting device of an automobile engine, which comprises an accumulator battery, a power switch, a water temperature alarm sensor, an engine oil pressure alarm sensor and an engine flameout enforcing circuit, wherein a delay relay SJ is connected in series with the power supply end of the power switch, the water temperature alarm sensor and the engine oil pressure alarm sensor connected in parallel, the end with normally open contact of the delay relay SJ is connected with the controlled end of the power switch, and the other end thereof is connected with the engine flameout enforcing circuit. The utility model has the beneficial effects that the structure of the engine protecting device is simple and compact, the relay has great universality, the mounting position is not limited, large batch production is easy, the cost is low, the repairing and the replacement are convenient, and the circuit is strong in electromagnetic interference resistance.
Description
Technical field
The utility model relates to a kind of automatic safety device of motor car engine.Particularly relate to and a kind ofly cross the device that low or water temperature is carried out safety protection automatically to motor car engine when too high at engine oil pressure.
Background technique
Automobile that we use and developed country compare, and breakdown in the motor rate height damages very fast.Trace it to its cause, mainly be coming across of new car engine do not reach requirement, faulty lubrication and safeguard unreasonable due to.
Motor car engine always has a spot of machine oil and is burnt to the firing chamber by ring belt when work; Piston ring and casing wall slip surface are overheated, and lubricant film is destroyed by scaling loss, make that the spur face directly contacts on piston ring and the casing wall friction surface, form localized hyperthermia and cause the friction surface scaling loss.Particularly under high temperature and high speed, be in border friction or dry friction state, the easier material transfer that causes metal surface element between piston ring and the casing wall, and on the surface of relative movement, form wire scratch and local melting welding, i.e. piston ring circumferential slippage, piston skirt and casing wall scratch, adhesion; Sometimes, because faults such as the pipeline of lubrication system, pad make machine oil generation seepage, the machine oil quantity in the oil cylinder drain pan is reducing gradually; Perhaps, owing to in time maintain lubrication system lubricating oil path and filter cleaner are stopped up.
Motor car engine is under high load working condition, make engine overheat when particularly climbing for a long time, destroy lubricant film, make engine temperature too high, cylinder head is overheated, cause that lubricating condition worsens between each friction pair, exhaust valve is ablated, the piston abnormal deformation, destroy match normal assembly relation between component of friction pairs such as cylinder, piston, wrist pin and piston ring, even piston ring can occur stuck in annular groove, adds fast thawing and, weares and teares.Perhaps, when cooling system take place to be revealed, cylinder block fin air-cooled or forced air cold engine was covered by greasy filth, dirt, the influence heat radiation, and water cooled engine does not note in time adding cooling liquid, or cooling liquid deficiency, leakage, causes engine overheat.In addition, automobile travels in the plateau section, and atmospheric pressure is lower, and motor also is easy to occur " boiling " phenomenon.
Engine oil pressure crosses low or water temperature is too high all is easy to cause motor " scuffing of cylinder bore " or " tile kilning " accident, has to carry out the overhaul of motor.Both waste the time, wasted valuable fund again.
The generation of above-mentioned fault, very common on the automobile of Sheng Chaning in early days, because the early stage automobile of producing does not all have engine protection device.The automobile of generation production also only was to install a tutorial light additional in recent years, and promptly too high tutorial light of water temperature and engine oil pressure are crossed low tutorial light, and these tutorial light are through using for a long time, and the bulb that has burns out, and the circuit that has breaks down.Even bulb does not burn out, also can not always stare at tutorial light during driving, particularly the fresh driver is many in recent years.The fresh driver is fewer to the understanding of automobile, and is inconsiderate to the maintenance of automobile, and the attention during driving all concentrates on mostly observes on the road conditions, seldom notes motormeter, and when fault indicating lamp was bright, the fresh driver who has but " turned a blind eye to ".
Therefore, how automobile current generator is carried out effective safety protection and become instant important topic.
Summary of the invention
Technical problem to be solved in the utility model is; a kind of motor car engine automatic safety device is provided; can be under improper operating mode; it is flame-out that automatic safety device is forced motor car engine; and be unlikely to take place " scuffing of cylinder bore " or " tile kilning " accident of motor car engine, effectively avoided the damage of motor car engine.
The technological scheme that the utility model adopted is: a kind of motor car engine automatic safety device; comprise; storage battery; power switch; the water temperature alarm sensor; the engine oil pressure alarm sensor; it is characterized in that; also comprise; force the engine misses circuit; be connected in series with time delay relay SJ at described power switch with feeder ear after described water temperature alarm sensor and described engine oil pressure alarm sensor are in parallel, an end of described time delay relay SJ normally opened contact is connected with the controlled end of described power switch, and the other end is connected with described pressure engine misses circuit.
When described former motor car engine is petrol engine, described pressure engine misses circuit is, two control ends of the newly-increased relay J 1 that between the controlled end of described time delay relay SJ normally opened contact and ground wire, is connected in series, the control circuit of former spark coil L1 and described former spark coil L1, normally-closed contact by newly-increased relay J 1 is connected, that is, the normally-closed contact of described relay J 1 "-" that be connected on former spark coil connects between the post.
When described former motor car engine is diesel engine, and, flame-out by Fuel Cut Solenoid Valve EMF, described pressure engine misses circuit is, the control end of the newly-increased relay J 2 that is connected in series between the controlled end of described time delay relay SJ normally opened contact and ground wire is connected by the normally-closed contact that increases relay J 2 newly with the control circuit of described former Fuel Cut Solenoid Valve EMF at described Fuel Cut Solenoid Valve EMF.
When described former motor car engine is diesel engine, and, engine misses are manually controlled by flame-out backguy, be connected in series between the controlled end of described time delay relay SJ normally opened contact and the ground wire control end of newly-increased oil-break electromagnet DT, described newly-increased oil-break electromagnet DT replaces flame-out backguy.
The voltage Applicable scope of described time delay relay SJ, relay J 1, J2, oil-break electromagnet DT, water temperature alarm sensor and engine oil pressure alarm sensor is consistent with the voltage of former automobile.
The delay time of described time delay relay SJ is 15～30 seconds.
The beneficial effects of the utility model are: engine protection device simple in structure, compact, and the relay highly versatile, the mounting point is unrestricted, is easy to produce in enormous quantities, and cost is low, is convenient to maintenance, changes, and circuit has the ability of stronger anti-electromagnetic interference.
Description of drawings
Fig. 1 is a motor car engine automatic safety device functional-block diagram;
Fig. 2 is a motor car engine automatic safety device schematic diagram;
Fig. 3 is the schematic diagram of the former automobile of motor car engine automatic safety device when being petrol engine;
Fig. 4 is that the former automobile of motor car engine automatic safety device is diesel engine and is the schematic diagram when flame-out by Fuel Cut Solenoid Valve;
Fig. 5 is that the former automobile of motor car engine automatic safety device is a diesel engine, and flame-out is the schematic diagram of manually being controlled by flame-out backguy.
Among the figure:
SW: power switch SJ: time delay relay L1: spark coil
EMF: Fuel Cut Solenoid Valve EMT: oil-break electromagnet
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Fig. 1 is the utility model motor car engine automatic safety device functional-block diagram; Fig. 2 is the utility model motor car engine automatic safety device schematic diagram.As shown in Figure 1 and Figure 2, the utility model working principle is that the motor car engine automatic safety device comprises; storage battery, power switch, water temperature alarm sensor; the engine oil pressure alarm sensor is forced the engine misses circuit, at power switch and described water temperature alarm sensor
With described engine oil pressure alarm sensor
The parallel operation end be connected in series with time delay relay SJ, one end of time delay relay SJ normally opened contact is connected with the controlled end of described power switch, the other end is connected with described pressure engine misses circuit, when engine oil pressure is crossed low or water temperature when too high, and the engine oil pressure alarm sensor
And/or water temperature alarm sensor
Be in on-state, the power connection on the time delay relay SJ coil, through after the predefined time, the make contact of time delay relay SJ has been connected the control main line, the oil-break electromagnet EMT of main line or relay J 1 or relay J 2 adhesives; Oil-break electromagnet EMT drives the control arm commentaries on classics (moving) of high pressure oil pump and moves, and has cut off oil circuit, and it is flame-out that motor is forced.Equally, the adhesive of relay J 1 or J2 disconnects normally-closed contact, has cut off former engine control circuit, and it is flame-out that motor is forced.If on the former automobile water temperature alarm sensor and engine oil pressure alarm sensor are arranged, just the lead of the coil lead of this protective gear time delay relay SJ are connected on the wiring terminal of water temperature alarm sensor and engine oil pressure alarm sensor.If do not have water temperature alarm sensor and engine oil pressure alarm sensor on the former automobile, should be replaced with water temperature and alarm sensor and engine oil pressure and alarm sensor to cooling-water temperature sensor on the former automobile and oil pressure sensor.
Fig. 3 is the schematic diagram of the former automobile of the utility model motor car engine automatic safety device when being petrol engine; as shown in Figure 3; when former motor car engine is petrol engine; force the engine misses circuit to be; the control end of the newly-increased relay J 1 that between the controlled end of time delay relay SJ normally opened contact and ground wire, is connected in series; the control circuit A of former spark coil L1 and described former spark coil L1; be connected by the normally-closed contact that increases relay J 1 newly; that is, the normally-closed contact of described relay J 1 "-" that be connected on former spark coil connects between the post.When protective gear is inoperative, to primary circuit without any influence; When protective gear worked, the normally-closed contact of relay J was opened, and had cut off former firing circuit, made engine misses.
Fig. 4 is that the former automobile of the utility model motor car engine automatic safety device is a diesel engine, and is the schematic diagram when flame-out by Fuel Cut Solenoid Valve; As shown in Figure 4, when former motor car engine is diesel engine, and, flame-out by Fuel Cut Solenoid Valve EMF, described pressure engine misses circuit is, the control end of the newly-increased relay J 2 that is connected in series between the controlled end of described time delay relay SJ normally-closed contact and ground wire at the control circuit B of described Fuel Cut Solenoid Valve EMF and described former Fuel Cut Solenoid Valve EMF, is connected by the normally-closed contact that increases relay J 2 newly.When protective gear is inoperative, to primary circuit without any influence; When protective gear worked, the normally-closed contact of relay J 2 disconnected, and has cut off the Fuel Cut Solenoid Valve circuit, forced engine misses.
Fig. 5 is that the former automobile of the utility model motor car engine automatic safety device is a diesel engine; flame-out is the schematic diagram of manually being controlled by flame-out backguy; as shown in Figure 5; when former motor car engine is diesel engine; and; engine misses are manually controlled by flame-out backguy, the control end C of the newly-increased oil-break electromagnet DT that between the controlled end of described time delay relay SJ normally opened contact and ground wire, is connected in series, and described newly-increased oil-break electromagnet DT replaces flame-out backguy.When protective gear worked, the make contact of time delay relay SJ was connected, and oil-break electromagnet DT gets electric and produces suction, and the control arm that drives high pressure oil pump changes (moving) and moves, and has cut off oil circuit, and it is flame-out that motor is forced.
Time delay relay SJ, relay J 1, J2, oil-break electromagnet DT, water temperature alarm sensor and the voltage Applicable scope of engine oil pressure alarm sensor and the voltage of former automobile are consistent.Time delay relay SJ, relay J 1, relay J 2, oil-break electromagnet EMT and alarm all have the branch of 12 volts and 24 volts, should be consistent with the voltage of former automobile.Relay adhesive area requirement broad, the automobile power source of 12V for example, require the reliable proper functioning of relay energy in 8.5～15.5V, because bigger electric current is flow through in the contact of relay, it is more serious to generate heat, for guaranteeing the contact reliably working, the voltage drop of fitness for purpose contact is very low, requires the contact sectional area ratio bigger simultaneously.
The delay time of time delay relay SJ is preferably 15～30 seconds, and the purpose of time-delay is at engine start instantaneous (this moment engine oil pressure very low even be zero), also can start smoothly; When fault takes place, can postpone a period of time, allow driver's perception and taking measures, if the driver does not take measures, it is flame-out that protective gear can make motor force.15～30 seconds is a relatively safer time, at this time intrinsic motivation " scuffing of cylinder bore " or " tile kilning " accident can not take place generally.
The utility model can be under improper operating mode; it is flame-out that automatic safety device is forced motor car engine; and be unlikely to take place " scuffing of cylinder bore " or " tile kilning " accident of motor car engine; effectively avoided the damage of motor car engine; in addition; serviceability temperature wider range of relay, closed protection, the life-span is long.
It is worthy of note that protection domain of the present utility model is not limited to above-mentioned instantiation mode, according to basic fundamental design of the present utility model, also available essentially identical structure is improved described pressure engine misses circuit.As long as those of ordinary skills need not through creative work, the mode of execution that can associate all belongs to protection domain of the present utility model.
Claims (9)
1. motor car engine automatic safety device; comprise; storage battery; power switch; the water temperature alarm sensor; the engine oil pressure alarm sensor; it is characterized in that; also comprise; force the engine misses circuit; be connected in series with time delay relay SJ at described power switch with feeder ear after described water temperature alarm sensor and described engine oil pressure alarm sensor are in parallel, an end of described time delay relay SJ normally opened contact is connected with the controlled end of described power switch, and the other end is connected with described pressure engine misses circuit.
2. motor car engine automatic safety device according to claim 1; it is characterized in that; when described former motor car engine is petrol engine; described pressure engine misses circuit is; two control ends of the newly-increased relay J 1 that between the controlled end of described time delay relay SJ normally opened contact and ground wire, is connected in series; the control circuit of former spark coil L1 and described former spark coil L1; normally-closed contact by newly-increased relay J 1 is connected; that is, the normally-closed contact of described relay J 1 "-" that be connected on former spark coil connects between the post.
3. motor car engine automatic safety device according to claim 1; it is characterized in that; when described former motor car engine is diesel engine; and; flame-out by Fuel Cut Solenoid Valve EMF; described pressure engine misses circuit is, the control end of the newly-increased relay J 2 that is connected in series between the controlled end of described time delay relay SJ normally opened contact and ground wire is connected by the normally-closed contact that increases relay J 2 newly with the control circuit of described former Fuel Cut Solenoid Valve EMF at described Fuel Cut Solenoid Valve EMF.
4. motor car engine automatic safety device according to claim 1; it is characterized in that; when described former motor car engine is diesel engine; and; engine misses are manually controlled by flame-out backguy; be connected in series between the controlled end of described time delay relay SJ normally opened contact and the ground wire control end of newly-increased oil-break electromagnet DT, described newly-increased oil-break electromagnet DT replaces flame-out backguy.
5. motor car engine automatic safety device according to claim 1 is characterized in that, the voltage Applicable scope of described time delay relay SJ, water temperature alarm sensor and engine oil pressure alarm sensor is consistent with the voltage of former automobile.
6. motor car engine automatic safety device according to claim 2 is characterized in that, the voltage Applicable scope of described relay J 1 is consistent with the voltage of former automobile.
7. motor car engine automatic safety device according to claim 3 is characterized in that, the voltage Applicable scope of described relay J 2 is consistent with the voltage of former automobile.
8. motor car engine automatic safety device according to claim 4 is characterized in that, the voltage Applicable scope of described oil-break electromagnet DT is consistent with the voltage of former automobile.
9. according to any one described motor car engine automatic safety device of claim 1 to 4, it is characterized in that the delay time of described time delay relay SJ is 15～30 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200987516U CN201539310U (en) | 2009-09-16 | 2009-09-16 | Automatic protecting device of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200987516U CN201539310U (en) | 2009-09-16 | 2009-09-16 | Automatic protecting device of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201539310U true CN201539310U (en) | 2010-08-04 |
Family
ID=42590763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200987516U Expired - Fee Related CN201539310U (en) | 2009-09-16 | 2009-09-16 | Automatic protecting device of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201539310U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536441A (en) * | 2012-02-28 | 2012-07-04 | 中国人民解放军军事交通学院 | Automatic protection device for exhaust gas turbocharger |
| CN102680169A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Acousto-optical pressure early warning device |
| CN110500158A (en) * | 2019-08-19 | 2019-11-26 | 匡远灿 | A kind of engine control protective unit and method |
| CN110671217A (en) * | 2019-09-29 | 2020-01-10 | 贵州慧创科技发展有限公司 | Engine oil-cut-off device |
-
2009
- 2009-09-16 CN CN2009200987516U patent/CN201539310U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536441A (en) * | 2012-02-28 | 2012-07-04 | 中国人民解放军军事交通学院 | Automatic protection device for exhaust gas turbocharger |
| CN102680169A (en) * | 2012-05-31 | 2012-09-19 | 襄垣县树元电器有限公司 | Acousto-optical pressure early warning device |
| CN110500158A (en) * | 2019-08-19 | 2019-11-26 | 匡远灿 | A kind of engine control protective unit and method |
| CN110671217A (en) * | 2019-09-29 | 2020-01-10 | 贵州慧创科技发展有限公司 | Engine oil-cut-off device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20110916 |