CN104775948A - Control circuit of engine preheating device - Google Patents
Control circuit of engine preheating device Download PDFInfo
- Publication number
- CN104775948A CN104775948A CN201510162667.6A CN201510162667A CN104775948A CN 104775948 A CN104775948 A CN 104775948A CN 201510162667 A CN201510162667 A CN 201510162667A CN 104775948 A CN104775948 A CN 104775948A
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- engine preheating
- control circuit
- engine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention discloses a control circuit of an engine preheating device. The control circuit comprises an input circuit, an output circuit and a time protector; the engine preheating device is connected onto the output circuit in series; the time protector comprises an input loop and an output loop, wherein the input circuit is connected with the input loop, and the output circuit is connected with the output loop; input control voltage is added to the input end of the input loop through the input circuit; on and off of the output circuit is controlled by a delay circuit of the time protector, and further a circuit of the engine preheating device is controlled to be connected. The control circuit of the engine preheating device reasonably optimizes functions of the preheating device by periodically restricting the heating time of the preheating device and the maximum currents of the control circuit of the engine preheating device, enables an engine ECU (Electronic Control Unit) and a pre-heater to be effectively protected, and can not only prolong the service life of the pre-heater but also avoid harness burning and other vicious accidents.
Description
Technical field
The present invention relates to engine charge preheating field, particularly a kind of control circuit of engine preheating system.
Background technique
At present, often there is ECU burnout failure in China's frigid zone motor, and its main cause is that motor and overall wire sheaves itself are of low quality on the one hand, is that the hidden danger of Preheating unit is often out in the cold on the other hand.
Part motor is from starting, Preheating unit is always in running order, long-time energising is carried out heating to air inlet and engine section component will inevitably be caused overheated, be easy to occur burning car, the phenomenons such as engine wiring harness burns, therefore need to be limited and function optimization Preheating unit, to prevent from occurring accident because of Preheating unit long-time heating.
The information being disclosed in this background technique part is only intended to increase the understanding to general background of the present invention, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Summary of the invention
The object of the present invention is to provide a kind of control circuit of simple and reasonable engine preheating system; the control circuit of this engine preheating system makes Preheating unit function reasonably be optimized by the mode of the maximum current periodically limiting the heating time of Preheating unit and the control circuit of engine preheating system; Engine ECU and preheater are effectively protected; the life-span that preheater uses can be extended on the one hand, the generation of burning the serious accidents such as wire harness can be avoided in addition on the one hand.
For achieving the above object, the invention provides the control circuit of engine preheating system, comprising: input circlult; Output circuit, engine preheating system is serially connected on this output circuit; And guardtime device; comprise: input circuit and output loop; described input circlult is connected with this input circuit; described output circuit is connected with this output loop; input control voltage is added to the input end of described input circuit by described input circlult; the delay circuit of transit time protector, controls the break-make of described output circuit, and then controls the circuit ON of engine preheating system.
Preferably, in technique scheme, guardtime device comprises: coil, iron core, armature, reaction spring, push pedal, piston rod, lever, turriform spring, weak spring, rubber membrane, air chamber, adjusting screw rod, air chamber suction port, piston, the first sensitive switch, the second sensitive switch and timer, wherein, timer class is used for the power on/off of control coil; First sensitive switch and the second sensitive switch are for controlling the break-make of output circuit, and armature and push pedal can be attracted when coil electricity and instantaneously to move towards iron core, and one end of push pedal is for controlling the break-make of the contact of the second sensitive switch; One end of piston rod abuts push pedal, and the other end is ined succession the piston in air chamber, and abuts rubber membrane; Turriform spring, weak spring are on the piston rod sheathed respectively; One end of bar thick stick is connected with one end of piston rod, and the other end is for controlling the break-make of the contact of the first sensitive switch.
Preferably, in technique scheme, input circlult is [constant.
Preferably, in technique scheme, input circlult is also serially connected with current-limiting fuse.
Preferably, in technique scheme, current-limiting fuse is 7.5A.
Compared with prior art; the present invention has following beneficial effect: the control circuit of this engine preheating system makes Preheating unit function reasonably be optimized by the mode of the maximum current periodically limiting the heating time of Preheating unit and the control circuit of engine preheating system; Engine ECU and preheater are effectively protected; the life-span that preheater uses can be extended on the one hand, the generation of burning the serious accidents such as wire harness can be avoided in addition on the one hand.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the control circuit of engine preheating system of the present invention.
Fig. 2 is the guardtime device structural representation of the control circuit of engine preheating system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.
Clearly represent unless otherwise other, otherwise in whole specification and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or constituent element, and do not get rid of other element or other constituent element.
As shown in Figure 1, according to specifically comprising of the control circuit of the engine preheating system of the specific embodiment of the invention: input circlult 1, output circuit 2 and guardtime device 3, wherein, guardtime device 3 comprises again: input circuit (control system) and output loop (by control system), input circlult 1 is connected with the input circuit of guardtime device 3, and is serially connected with current-limiting fuse 4; Output circuit 2 is connected with the output loop of guardtime device 3, and engine preheating system 5 is serially connected on output circuit 2.When input control voltage to be added to the input circuit input end of guardtime device 3 by input circlult 1, the delay circuit of transit time protector 3, controls the break-make of output circuit 2, and then controls the circuit ON of engine preheating system 5; When input signal is removed, guardtime device 3 turns off the switch of output circuit 2, the circuit of engine preheating system 5 is disconnected, quits work.The control circuit of this engine preheating system makes Preheating unit function reasonably be optimized by the mode of the maximum current periodically limiting the heating time of Preheating unit and the control circuit of engine preheating system; Engine ECU and preheater are effectively protected; the life-span that preheater uses can be extended on the one hand, the generation of burning the serious accidents such as wire harness can be avoided in addition on the one hand.
Specifically; as shown in Figure 2; guardtime device 3 comprises: coil 31, iron core 32, armature 33, reaction spring 34, push pedal 35, piston rod 36, lever 37, turriform spring 38, weak spring 39, rubber membrane 40, air chamber 41, adjusting screw rod 42, air chamber suction port 43, piston 44, first sensitive switch 45, second sensitive switch 46 and timer; wherein; the similar single-pole double-throw switch (SPDT) of timer, for the power on/off of control coil 31.Coil 31 has contact P, W of the input circuit of formation time protector 3, and contact W connects power cathode or ground connection, and after coil 31 power-off, guardtime device relies on the effect of reaction spring 34 and restores.First sensitive switch 45 has contact C, D, G and H of the output loop of formation time protector 3; second sensitive switch 46 has contact A, B, E and F of the output loop of formation time protector 3, and the first sensitive switch 45 and the second sensitive switch 46 are for controlling the break-make of output circuit 2.Contact A, F connect positive source, and voltage is respectively 24V, 12V, 24V, and C, G are connected to power cathode or ground connection again after connecting engine Preheating unit 5.Armature 33 and push pedal 35 are laid in the below of unshakable in one's determination 32, and can be attracted when coil 31 is energized and instantaneously to move towards unshakable in one's determination 32, one end of push pedal 35 is for controlling the break-make of the contact of the second sensitive switch 46.One end of piston rod 36 abuts push pedal 35; The other end is ined succession the piston 44 in air chamber 41, and abuts rubber membrane 40.Turriform spring 38, weak spring 39 are set on piston rod 36 respectively.One end of bar thick stick 37 is connected with one end of piston rod 36, and the other end is for controlling the break-make of the contact of the first sensitive switch 45.When coil 1 is by electric current, armature 33 and push pedal 35 are attracted and instantaneously move towards unshakable in one's determination 32, but piston rod 36 and bar thick stick 37 can not be followed together with push pedal 35 and move to unshakable in one's determination 32 simultaneously, the piston 44 in air chamber because the other end of piston rod 36 is ined succession, when piston 44 moves along with piston rod 36, the space between piston and air chamber wall becomes large, under the effect of vacuum, piston 44 must be subject to and piston rod 36 pulling force opposite effect power, and therefore piston rod 36 motion is slower than push pedal 35.When piston rod starts to 32 motion unshakable in one's determination under the effect of push pedal 35, rubber membrane 40 moves to iron core thereupon, now bar thick stick 37 be subject to the thrust of rubber membrane 40, weak spring 39 and turriform spring 38 make a concerted effort (time initial, thrust is less than reaction force), comparatively push pedal 35 is slow to cause piston rod 36 travelling speed, through certain hour, piston rod 36 moves on to certain position, just delayed contact action can be promoted by lever 37, break contact is disconnected, namely the first sensitive switch 45 is connected, and moving together contact closes.When needing time expand, can regulate the size of air chamber suction port 43 to change with adjusting screw rod 42, the chamber indoor air that piston 44 and air chamber walls are formed is discharged through air outlet.
When between timing dynamic stage, contact G with H is connected, F with E is connected, and now engine preheating system 5 does not work.
When timer control circuit makes coil 1 by electric current, guardtime device 3 is started working, and armature 33 and push pedal 35 are attracted and instantaneously move towards unshakable in one's determination 32, make the second sensitive switch 46 momentary connection, i.e. action contacting.At this moment the contact A of the second sensitive switch 46 is connected with B, contact G with H of former first sensitive switch 45 in contact is connected as the above analysis, change C with D into be connected, and C with D be connected be connected with A and B asynchronous, the time difference is 60s, namely piston rod 36 and bar thick stick 37 can not be followed together with push pedal 35 simultaneously and move to unshakable in one's determination 32, piston rod 36 travelling speed comparatively push pedal 35 is slow, through certain hour, piston rod 36 moves on to certain position, just can promote delayed contact action by lever 37, break contact is disconnected, namely the first sensitive switch 45 is connected, and moving together contact closes.
When control circuit disconnects coil 1 electric current to timer again, relay relies on the effect of reaction spring 4 and restores, and the contact G of the second sensitive switch 46 is multiple to be connected with H, simultaneously in push pedal 5 with under the acting in conjunction of bar thick stick 7, F and E recovers attached state equally.Preheater quits work, then through 60s, timer control circuit makes coil 1 form path, so forms circulation.
Input circlult 1 is Constant Current-Source Design, is connected with the input circuit of guardtime device 3, and is serially connected with current-limiting fuse 4, and the specification of current-limiting fuse 4 is 7.5A, is connected with the positive pole of power supply.Output circuit 2 comprises a RCD circuit, and output loop and a 150A safety fuse cutout of the output terminal of this RCD circuit and engine preheating system 5, guardtime device 3 are connected on the power supply of Preheating unit.
When passing into the circuital current of coil 1 in 7.5A limits; relay can normally work; when electric current exceeds limit value allowable; blown fuse makes contact F with E be connected; Preheating unit is quit work; thus the protection current"on"time of Preheating unit and the control circuit of engine preheating system are not burnt by big current, and then realize predetermined function.Preheating relay of the present invention makes Engine ECU and preheater be effectively protected by the mode of restriction Preheating unit heating time, can extend the life-span that preheater uses on the one hand, can avoid the generation of burning the serious accidents such as wire harness in addition on the one hand.
The control circuit of engine preheating system of the present invention again starting time interval is 60s; limit without number of times; the demand of engine long time service can be met; can protect Engine ECU, engine wiring harness etc. under the prerequisite of the operating habit and preheater that do not change user, prevent because long-time energising causes serious accidents such as burning car.
To sum up; the control circuit of this engine preheating system makes Preheating unit function reasonably be optimized by the mode of the maximum current periodically limiting the heating time of Preheating unit and the control circuit of engine preheating system; Engine ECU and preheater are effectively protected; the life-span that preheater uses can be extended on the one hand, the generation of burning the serious accidents such as wire harness can be avoided in addition on the one hand.
The aforementioned description to concrete exemplary of the present invention is to illustrate and the object of illustration.These descriptions not want the present invention to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present invention and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present invention and various different selection and change.Scope of the present invention is intended to limited by claims and equivalents thereof.
Claims (5)
1. a control circuit for engine preheating system, is characterized in that, comprising:
Input circlult;
Output circuit, engine preheating system is serially connected on this output circuit; And
Guardtime device; comprise: input circuit and output loop; described input circlult is connected with this input circuit; described output circuit is connected with this output loop; input control voltage is added to the input end of described input circuit by described input circlult; the delay circuit of transit time protector, controls the break-make of described output circuit, and then controls the circuit ON of engine preheating system.
2. the control circuit of engine preheating system according to claim 1, it is characterized in that, described guardtime device comprises: coil, iron core, armature, reaction spring, push pedal, piston rod, lever, turriform spring, weak spring, rubber membrane, air chamber, adjusting screw rod, air chamber suction port, piston, the first sensitive switch, the second sensitive switch and timer, wherein, timer class is used for the power on/off of control coil; First sensitive switch and the second sensitive switch are for controlling the break-make of output circuit, and armature and push pedal can be attracted when coil electricity and instantaneously to move towards iron core, and one end of push pedal is for controlling the break-make of the contact of the second sensitive switch; One end of piston rod abuts push pedal, and the other end is ined succession the piston in air chamber, and abuts rubber membrane; Turriform spring, weak spring are on the piston rod sheathed respectively; One end of bar thick stick is connected with one end of piston rod, and the other end is for controlling the break-make of the contact of the first sensitive switch.
3. the control circuit of engine preheating system according to claim 1, is characterized in that, described input circlult is [constant.
4. the control circuit of engine preheating system according to claim 1, is characterized in that, described input circlult is also serially connected with current-limiting fuse.
5. the control circuit of engine preheating system according to claim 4, is characterized in that, described current-limiting fuse is 7.5A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162667.6A CN104775948A (en) | 2015-04-08 | 2015-04-08 | Control circuit of engine preheating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162667.6A CN104775948A (en) | 2015-04-08 | 2015-04-08 | Control circuit of engine preheating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104775948A true CN104775948A (en) | 2015-07-15 |
Family
ID=53617645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510162667.6A Pending CN104775948A (en) | 2015-04-08 | 2015-04-08 | Control circuit of engine preheating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104775948A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851232U (en) * | 2010-10-19 | 2011-06-01 | 韩连志 | Oil way heater of diesel vehicle |
| CN204055645U (en) * | 2014-07-23 | 2014-12-31 | 北京汽车研究总院有限公司 | Master cock circuit and automobile |
| CN104282498A (en) * | 2014-10-10 | 2015-01-14 | 成都锐奕信息技术有限公司 | System for guaranteeing that elements are moved in place |
| CN104282499A (en) * | 2014-10-10 | 2015-01-14 | 成都锐奕信息技术有限公司 | Improvement structure of air damping type time relay |
| CN204167214U (en) * | 2014-10-10 | 2015-02-18 | 成都锐奕信息技术有限公司 | The on-delay type relay that element moves into place can be ensured |
| CN204167212U (en) * | 2014-10-10 | 2015-02-18 | 成都锐奕信息技术有限公司 | A kind of structure of the on-delay type air damp type time relay |
| CN204511716U (en) * | 2015-04-08 | 2015-07-29 | 广西玉柴机器股份有限公司 | The control circuit of engine preheating system |
| CN104835689A (en) * | 2015-05-20 | 2015-08-12 | 江苏海事职业技术学院 | Air damping type time relay |
| CN204596723U (en) * | 2015-05-20 | 2015-08-26 | 江苏海事职业技术学院 | A kind of air damp type time relay |
-
2015
- 2015-04-08 CN CN201510162667.6A patent/CN104775948A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201851232U (en) * | 2010-10-19 | 2011-06-01 | 韩连志 | Oil way heater of diesel vehicle |
| CN204055645U (en) * | 2014-07-23 | 2014-12-31 | 北京汽车研究总院有限公司 | Master cock circuit and automobile |
| CN104282498A (en) * | 2014-10-10 | 2015-01-14 | 成都锐奕信息技术有限公司 | System for guaranteeing that elements are moved in place |
| CN104282499A (en) * | 2014-10-10 | 2015-01-14 | 成都锐奕信息技术有限公司 | Improvement structure of air damping type time relay |
| CN204167214U (en) * | 2014-10-10 | 2015-02-18 | 成都锐奕信息技术有限公司 | The on-delay type relay that element moves into place can be ensured |
| CN204167212U (en) * | 2014-10-10 | 2015-02-18 | 成都锐奕信息技术有限公司 | A kind of structure of the on-delay type air damp type time relay |
| CN204511716U (en) * | 2015-04-08 | 2015-07-29 | 广西玉柴机器股份有限公司 | The control circuit of engine preheating system |
| CN104835689A (en) * | 2015-05-20 | 2015-08-12 | 江苏海事职业技术学院 | Air damping type time relay |
| CN204596723U (en) * | 2015-05-20 | 2015-08-26 | 江苏海事职业技术学院 | A kind of air damp type time relay |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203799201U (en) | Power supply control device | |
| KR20180048068A (en) | Battery pack | |
| MX2017010169A (en) | A vehicle electrical system. | |
| CN100461610C (en) | Starter for a line start electric motor | |
| CN106379174B (en) | Pantograph control device and rail vehicle | |
| CN204511716U (en) | The control circuit of engine preheating system | |
| US11196245B2 (en) | DC power system breaker for transportation vehicle | |
| US4147203A (en) | Method and apparatus for controlling the heating and cooling function of a heat pump system | |
| CN104775948A (en) | Control circuit of engine preheating device | |
| CN201162611Y (en) | Flameout delay controller for vehicle diesel engine | |
| CN107947109A (en) | The electric pre-heating relay that high current is contactless | |
| CN101980348A (en) | Alternating current contact with soft-start and non-arc make-and-break functions | |
| CN210089108U (en) | Tripping device, leakage protector and leakage-proof electric water heater | |
| CN201994245U (en) | Relay system | |
| CN209257826U (en) | A kind of on-board air conditioner precharging circuit | |
| CN205281160U (en) | Electromagnetic type switch electricity stop control circuit | |
| CN105406443A (en) | Instantaneous electric water heater dry heating prevention detection protection circuit | |
| CN217087508U (en) | Self-adaptation management and control circuit with self-resuming fuse | |
| US2717317A (en) | Engine turning mechanism | |
| CN204163909U (en) | For fuel heating system and the vehicle thereof of vehicle | |
| CN203278209U (en) | Closing coil protector for breaker | |
| CN102748183A (en) | Automobile starter starting protection device | |
| US3820938A (en) | Circuit arrangement for fuel heating device | |
| CN219576628U (en) | Overcurrent fusing protection circuit | |
| CN217215946U (en) | Adjustable tractor main cable current protection system and tractor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150715 |
|
| RJ01 | Rejection of invention patent application after publication |