CN103821655A - Preheating control device for engine start and control method thereof - Google Patents
Preheating control device for engine start and control method thereof Download PDFInfo
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- CN103821655A CN103821655A CN201410076370.3A CN201410076370A CN103821655A CN 103821655 A CN103821655 A CN 103821655A CN 201410076370 A CN201410076370 A CN 201410076370A CN 103821655 A CN103821655 A CN 103821655A
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Abstract
The invention discloses a preheating control device for engine start and a control method thereof. The preheating control device comprises an engine water temperature detecting module, a preheating relay control module and a preheating plug input end voltage detecting module, wherein the engine water temperature detecting module is used for responding to an engine water temperature signal detected by a temperature sensor; the preheating relay control module is used for controlling the turn-on/off of a preheating relay so as to realize the starting/closing of a preheating system; the preheating plug input end voltage detecting module is used for responding to a voltage detecting signal at an input end of a preheating plug, so as to output an early warning signal and turn on a preheating indicator lamp. The preheating control device for engine start has an early warning function and the voltage state of the input end of the preheating plug (namely, the output end of the preheating relay) is monitored so as to judge whether the work of the preheating system is under normal preheating state or not, so that the preheating indicator lamp can be controlled to flicker by certain frequency and alarm, related personnel are reminded of timely processing the fault and the firing danger of circuits is reduced when the preheating system is under abnormal switching-on preheating state, such as preheating relay contact adhesion and automobile circuit fault.
Description
Technical field
The present invention relates to engine start preheating field, particularly a kind of engine start pre-heating control device and controlling method thereof.
Background technique
Under low temperature environment, motor is difficult for starting, and pre-heating system can carry out preheating to motor, and auxiliary engine successfully starts.Preheating electric control device is mainly to utilize the break-make of preheating relay to realize the control of the opening and closing to pre-heating system.
The control principle of existing pre-heating control device 1 as shown in Figure 1, wherein, K1: key operation ON shelves; K2: key operation Star shelves; Rt: temperature transducer; D: generator; A: safety fuse cutout; K: preheating relay; DL: pre-thermal light; P: heater plug; K3: preheating relay contact switch, temperature transducer Rt is for detection of engine water temperature, and preheating relay K is for realizing the control of the opening and closing to pre-heating system, and heater plug is used for to heating engines.
Before motor is prepared to start, it is that K1 switch is when closed that initiation key switch is screwed to ON shelves, pre-heating control device detects engine water temperature by the temperature transducer Rt being arranged on motor, in the time that temperature transducer Rt detects engine water temperature lower than certain setting value, pre-heating control device enters preheat mode, and the control coil of voltage to preheating relay K controlled in the J end output of pre-heating control device, and preheating relay contact K3 is closed to be connected, pre-thermal light DL lights, and heater plug P starts heating; Set preheat time rear indicator light DL and extinguish when energising preheating reaches, representing now can ato unit, key operation is screwed to Star shelves and connects the switch activated motor of K2.When after engine start success, the D+ end output generating signal of generator D on motor is to the D+ end of preheating controller, preheating controller judges that motor has started successfully accordingly, stopping J holding to preheating relay K output voltage, preheating relay contact K3 disconnects, heater plug P stops heating, forms a warm-up cycle process.
Pre existing heat control device has a defect: in the time there is abnormal connection because of certain reason in preheating relay K contact switch K3 (as common contact adhesion or control coil input end charged for a long time), can cause heater plug P abnormal electric heating.Because the operating current of heater plug is larger, circuit can produce amount of heat, but as pre-heating control device not at normal preheat mode in energising heating, pre-thermal light can not remind driver to dispose, time is easy to occur circuit burning once length, even causes the serious accidents such as fire.
Summary of the invention
The present invention is in order to overcome defect in above-mentioned prior art, provide a kind of simple and reasonable, can be in the time of the pre-heating system abnormal preheatings such as preheating relay contact switch sticks together, control pre-thermal light and flash warning by certain frequency, remind related personnel in time this fault to be disposed, prevent engine start pre-heating control device and controlling method thereof that circuit accident on fire occurs.
For achieving the above object, according to an aspect of the present invention, provide a kind of engine start pre-heating control device, comprising: engine water temperature testing module, the engine water temperature signal detecting for response temperature sensor; Preheating relay control module, realizes the opening and closing of pre-heating system for controlling the break-make of preheating relay; Heater plug input terminal voltage testing module, for responding the voltage detection signal of heater plug input end, and then output early warning signal is lighted the pre-thermal light of instrument.
In technique scheme, temperature transducer is arranged on motor.
In technique scheme, pre-heating system by heater plug to heating engines.
According to another aspect of the present invention, provide a kind of controlling method of engine start pre-heating control device, it is characterized in that:
First the engine water temperature signal that, response temperature sensor detects;
Secondly, control the conducting of preheating relay, heater plug starts heating;
Finally, the voltage detection signal of response heater plug input end, and export early warning signal and light pre-thermal light.
Compared with prior art, the present invention has following beneficial effect: this engine start pre-heating control device band warning function, by heater plug input end (being also preheating relay output terminal) voltage status is monitored, judge that whether pre-heating system work is in normal preheat mode, can be in the time of the pre-heating system abnormal preheatings such as preheating relay contact adhesion, automobile line break down, control pre-thermal light and flash warning by certain frequency, remind related personnel in time this fault to be disposed, reduce circuit danger on fire and occur.
Accompanying drawing explanation
Fig. 1 is wiring and the schematic diagram that available engine starts pre-heating control device;
Fig. 2 is wiring and the schematic diagram of engine start pre-heating control device of the present invention;
Fig. 3 is the flow chart of the controlling method of engine start pre-heating control device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, " left side ", " right side ", " front " and " reverse side " be all take the direction shown in each figure as benchmark, these words that are used for limiting direction are only used to be convenient to explanation, do not represent the restriction to the concrete technological scheme of the present invention.
Engine start pre-heating control device band warning function of the present invention, by heater plug input end (being also preheating relay output terminal) voltage status is monitored, judge that whether pre-heating system work is in normal preheat mode, can be in the time of the pre-heating system abnormal preheatings such as preheating relay contact adhesion, automobile line break down, control pre-thermal light and flash warning by certain frequency, remind related personnel in time this fault to be disposed, reduce circuit danger on fire and occur.
Detailed description by way of example but unrestriced mode has illustrated the disclosure, should be understood that the realization that can be combined by independent realization or with other aspects in various aspect of the present disclosure below.This specification clearly enables those skilled in the art to manufacture and uses us to believe for new and non-obvious improvement, describe some embodiments, alternative, modification, alternative and system applies, comprised the current best mode that is considered to carry out the inventive principle of describing in this specification.In the time describing element or feature and/or embodiment, be intended to expression titled with " one " " one " " be somebody's turn to do " and " described " and there are one or more in element or feature.Term " comprises " that " comprising " and " having " is intended to is comprising property, and also has extra element or feature beyond being illustrated in those specifically described elements or feature.
As shown in Figure 2 concrete wiring and the principle of engine start pre-heating control device 2 of the present invention, wherein, K1: key operation ON shelves; K2: key operation Star shelves; Rt: temperature transducer; D: generator; A: safety fuse cutout; K: preheating relay; DL: pre-thermal light; P: heater plug; K3: preheating relay contact switch; B: heater plug input end, temperature transducer Rt is for detection of engine water temperature, and preheating relay K is for realizing the control of the opening and closing to pre-heating system, and heater plug is used for to heating engines.This pre-heating control device is by being also preheating relay output terminal to heater plug input end B() voltage status monitors, and judges that whether pre-heating system work is in normal preheat mode.In the time finding that abnormal energising preheating appears in pre-heating system, can propose to report to the police by pre-thermal light, remind driver to put in time everywhere, thereby effectively preventing that circuit is on fire waits dangerous generation.
This engine start pre-heating control device 2 specifically comprises: engine water temperature testing module 21, preheating relay control module 22 and heater plug input terminal voltage testing module 23, wherein, the engine water temperature signal that engine water temperature testing module 21 detects for response temperature sensor Rt, in the time that temperature transducer Rt detects engine water temperature lower than certain setting value (needing the temperature value of preheating), this engine start pre-heating control device 2 enters preheat mode.Preheating relay control module 22 realizes the control of the opening and closing to pre-heating system for controlling the break-make of preheating relay K.Heater plug input terminal voltage testing module 23 is for responding the voltage detection signal of heater plug input end B, and then output early warning signal (can be set as required the early warning signal that flashes of certain frequency) is lighted the pre-thermal light on instrument desk, remind driver in time pre-heating system to be carried out to fault eliminating and disposal, thereby avoid occurring the serious accidents such as circuit scaling loss, fire.
As shown in Figure 3, the controlling method of this engine start pre-heating control device 2 is as follows:
First the engine water temperature signal that, response temperature sensor Rt detects;
Before motor is prepared to start, it is that K1 switch is when closed that initiation key switch is screwed to ON shelves, engine water temperature testing module 21 detects engine water temperature by the temperature transducer Rt being arranged on motor, in the time that temperature transducer Rt detects engine water temperature lower than certain setting value (needing the temperature value of preheating), this engine start pre-heating control device enters preheat mode.
Secondly, control the conducting of preheating relay K, heater plug P starts heating;
In the time that temperature transducer Rt detects engine water temperature lower than certain setting value (needing the temperature value of preheating), the J end output voltage of this engine start pre-heating control device 2 is to the control coil of preheating relay K, preheating relay K obtains the closed connection of electric contact K3, pre-thermal light DL lights, and heater plug P starts heating.
Again, the voltage detection signal of response heater plug input end B, and export early warning signal and light the pre-thermal light on instrument desk;
In the time that exceed the longest preheat time (this time can be set arbitrarily as required) of setting preheat time, the J0 end of pre-this engine start pre-heating control device 2 detects when heater plug P input end B also exists voltage, light the pre-thermal light instrument desk by heater plug input terminal voltage testing module 23 from L end output early warning signal (can be set as required the early warning signal that flashes of certain frequency), remind driver in time pre-heating system to be carried out to fault eliminating and disposal, thereby avoid occurring the serious accidents such as circuit scaling loss, fire.
To sum up, this engine start pre-heating control device band warning function, by heater plug input end (being also preheating relay output terminal) voltage status is monitored, judge that whether pre-heating system work is in normal preheat mode, can be in the time of the pre-heating system abnormal preheatings such as preheating relay contact adhesion, automobile line break down, control pre-thermal light and flash warning by certain frequency, remind related personnel in time this fault to be disposed, reduce circuit danger on fire and occur.
Finally it should be noted that: above embodiment is only in order to illustrate the present invention and unrestricted technological scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can modify or be equal to replacement the present invention; And all do not depart from technological scheme and the improvement thereof of the spirit and scope of the present invention, it all should be encompassed in claim scope of the present invention.
Claims (4)
1. an engine start pre-heating control device, is characterized in that, comprising:
Engine water temperature testing module, the engine water temperature signal detecting for response temperature sensor;
Preheating relay control module, realizes the opening and closing of pre-heating system for controlling the break-make of preheating relay;
Heater plug input terminal voltage testing module, for responding the voltage detection signal of heater plug input end, and then output early warning signal is lighted the pre-thermal light of instrument.
2. engine start pre-heating control device according to claim 1, is characterized in that: described temperature transducer is arranged on motor.
3. engine start pre-heating control device according to claim 1, is characterized in that: described pre-heating system by heater plug to heating engines.
4. a controlling method for engine start pre-heating control device as claimed any one in claims 1 to 3, is characterized in that:
First the engine water temperature signal that, response temperature sensor detects;
Secondly, control the conducting of preheating relay, heater plug starts heating;
Finally, the voltage detection signal of response heater plug input end, and export early warning signal and light pre-thermal light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410076370.3A CN103821655A (en) | 2014-03-04 | 2014-03-04 | Preheating control device for engine start and control method thereof |
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| CN201410076370.3A CN103821655A (en) | 2014-03-04 | 2014-03-04 | Preheating control device for engine start and control method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986950A (en) * | 2015-02-04 | 2016-10-05 | 深圳市福田区青少年科技教育协会 | Environment-friendly starting protecting device of engine under low-temperature environment |
| CN107359598A (en) * | 2017-08-30 | 2017-11-17 | 潍柴动力股份有限公司 | A kind of inlet air heating relay fault diagnosis and protection circuit, method and system |
| CN108644038A (en) * | 2018-07-04 | 2018-10-12 | 芜湖钻石航空发动机有限公司 | A kind of aviation piston engine pre-heating system |
| CN111648884A (en) * | 2020-06-28 | 2020-09-11 | 东风商用车有限公司 | Engine air inlet preheating system based on electronic relay |
| CN112727656A (en) * | 2021-01-07 | 2021-04-30 | 徐州徐工挖掘机械有限公司 | Diesel engine starting protection control system and method and excavating machine |
| WO2023201889A1 (en) * | 2022-04-21 | 2023-10-26 | 上海三一重机股份有限公司 | Engine prewarming protection method and system, and operation machine |
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| CN203271993U (en) * | 2013-05-27 | 2013-11-06 | 江苏柳工机械有限公司 | Detection device of diesel engine flame preheating system |
| CN203702433U (en) * | 2014-03-04 | 2014-07-09 | 广西玉柴机器股份有限公司 | Engine starting preheating control device |
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| US5482013A (en) * | 1994-09-23 | 1996-01-09 | Cummins Engine Company, Inc. | Air intake heating and diagnostic system for internal combustion engines |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105986950A (en) * | 2015-02-04 | 2016-10-05 | 深圳市福田区青少年科技教育协会 | Environment-friendly starting protecting device of engine under low-temperature environment |
| CN107359598A (en) * | 2017-08-30 | 2017-11-17 | 潍柴动力股份有限公司 | A kind of inlet air heating relay fault diagnosis and protection circuit, method and system |
| CN107359598B (en) * | 2017-08-30 | 2019-09-27 | 潍柴动力股份有限公司 | A kind of inlet air heating relay fault diagnosis and protection circuit, method and system |
| CN108644038A (en) * | 2018-07-04 | 2018-10-12 | 芜湖钻石航空发动机有限公司 | A kind of aviation piston engine pre-heating system |
| CN108644038B (en) * | 2018-07-04 | 2024-04-23 | 芜湖钻石航空发动机有限公司 | Aviation piston engine preheating system |
| CN111648884A (en) * | 2020-06-28 | 2020-09-11 | 东风商用车有限公司 | Engine air inlet preheating system based on electronic relay |
| CN112727656A (en) * | 2021-01-07 | 2021-04-30 | 徐州徐工挖掘机械有限公司 | Diesel engine starting protection control system and method and excavating machine |
| CN112727656B (en) * | 2021-01-07 | 2022-03-18 | 徐州徐工挖掘机械有限公司 | Diesel engine starting protection control system and method and excavating machine |
| WO2023201889A1 (en) * | 2022-04-21 | 2023-10-26 | 上海三一重机股份有限公司 | Engine prewarming protection method and system, and operation machine |
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Application publication date: 20140528 |