CN203271993U - Detection device of diesel engine flame preheating system - Google Patents
Detection device of diesel engine flame preheating system Download PDFInfo
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- CN203271993U CN203271993U CN 201320293838 CN201320293838U CN203271993U CN 203271993 U CN203271993 U CN 203271993U CN 201320293838 CN201320293838 CN 201320293838 CN 201320293838 U CN201320293838 U CN 201320293838U CN 203271993 U CN203271993 U CN 203271993U
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- water temperature
- temperature sensor
- diesel engine
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- Ignition Installations For Internal Combustion Engines (AREA)
Abstract
A detection device of a diesel engine flame preheating system comprises a controller, a water temperature sensor, an oil supply electromagnetic valve, a glow plug, a preheating indicating lamp and an electric lock, wherein the water temperature sensor, the oil supply electromagnetic valve, the glow plug, the preheating indicating lamp and the electric lock are connected with the controller. The water temperature sensor is located in a position, used for measuring the temperature of cooling water, on a diesel engine body, when the vehicle electric lock is started, the water temperature sensor feeds the measuring result back to the controller, the controller controls the work of the oil supply electromagnetic valve, the work of the glow plug and the work of the preheating indicating lamp, and a detection switch is arranged between the water temperature sensor and the controller. The detection device of the diesel engine flame preheating system has the advantages that the detection and the overhaul conducted by the detection device on the diesel engine flame preheating system are not influenced by the environment temperature, the detection device is easy to machine and manufacture, cost is low, and the operation is easy and rapid to conduct.
Description
Technical field
The utility model relates to a kind of detection device of diesel engine flame pre-heating system, particularly a kind of for ambient air temperature during higher than zero degree to the inspection of flame preheat system and the detection device of maintenance.
Background technique
Diesel engines at present flame preheat system is comprised of electronic controller, heater plug, temperature transducer, confession solenoid and oil pipe component.Temperature transducer is arranged on diesel-engine body, measures the cooling water water temperature, during lower than zero degree, stirs the electric lock switch from the OFF shelves to the ON shelves when ambient temperature, and electronic controller is devoted oneself to work automatically.Glow plug is heated.Temperature is during higher than zero degree, and controller is not worked, and glow plug is not heated.
Because whether the flame preheat phylogenetic relationship can work in arctic weather to diesel engine, so must carry out quality inspection to its flame preheat system before dispatching from the factory for the loader that has configured the flame preheat system.Especially for the product of outlet, the check of this performance can not be omitted.
When ambient temperature during higher than zero degree, the flame preheat system can automatic operation.The method of flame detection pre-heating system is at present, the inspector pulls down the wiring of temperature transducer on diesel engine, make temperature transducer be in open-circuit condition, then arrive operator cabin and rotate the electric lock switch to the ON position, the indication situation of the pre-thermal light on the visualizer surface plate.After checking end, the wiring on the recovery temperature sensor.
In above-mentioned checkout procedure, some type diesel engine part is compact, and the removal sensor wiring is very difficult, has had a strong impact on detection efficiency.
Summary of the invention
When the purpose of this utility model is to provide a kind of ambient temperature higher than zero degree, the detection device of diesel engine flame pre-heating system that can fast detecting.
The utility model is achieved by the following technical programs:
A kind of detection device of diesel engine flame pre-heating system, comprise controller and the cooling-water temperature sensor that is connected with controller, for solenoid, glow plug, pre-thermal light and electric lock, described cooling-water temperature sensor is arranged on to be positioned on diesel-engine body measures cooling water water temperature position; When starting the vehicle electric lock, to controller, controller is controlled the work for solenoid, glow plug and pre-thermal light to described cooling-water temperature sensor, is provided with detecting switch between described cooling-water temperature sensor and controller with measurement feedback.
Preferred term is provided with relay between described glow plug and controller.
Preferred term, described detecting switch two ends shunt resistor.
Working principle: it is in fact a thermistor for the cooling-water temperature sensor of diesel engine flame pre-heating system, is arranged on the cooling water pipeline of diesel engine.Electronics sensing element on it is immersed in cooling liquid, and when diesel engine continued to be in off working state, the temperature of cooling liquid was identical with ambient temperature.Temperature raises, and its resistance diminishes; Temperature reduces, and it is large that its resistance becomes.Size and the preheating controller of its resistance are complementary.Its resistance is 2600 ohm such as can set zero degree the time, and when temperature was 20 degrees centigrade above freezing, its resistance was 1020 ohm, and when temperature was minus 20 degrees, its resistance was 3800 ohm.
During greater than 2600 ohm, namely show the ambient temperature subzero when the cooling-water temperature sensor resistance, controller starts glow plug and heats, and during less than 2600 ohm, controller is closed the glow plug stopped heating.
According to the control principle of preheating controller, the detecting switch of can connecting between controller and cooling-water temperature sensor.It is inoperative in the flame preheat system when detecting switch is closed.The Pen-down detection switch, detecting switch is inner to be disconnected, and has disconnected the path between controller and cooling-water temperature sensor, and controller starts glow plug and heats.
Different according to the flame preheat system, detecting switch two ends can resistance in parallel.
Beneficial effect: use the utility model the diesel engine flame pre-heating system is checked and overhaul the impact that is not subjected to ambient temperature, processing and fabricating is easy, and is with low cost, simple and efficient to handle.
Description of drawings
Fig. 1 is the first enforcement electrical schematic of the present utility model;
Fig. 2 is the second enforcement electrical schematic of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment one
As shown in Figure 1, a kind of detection device of diesel engine flame pre-heating system, comprise controller 1 and the cooling-water temperature sensor 2 that is connected with controller 1, for solenoid 3, glow plug 4, pre-thermal light 5 and electric lock 6, described cooling-water temperature sensor 2 is arranged on to be positioned on diesel-engine body measures cooling water water temperature position; When starting vehicle electric lock 6, to controller 1, controller 1 is controlled the work for solenoid 3, glow plug 4 and pre-thermal light 5 to described cooling-water temperature sensor 2, is provided with detecting switch 7 between described cooling-water temperature sensor 2 and controller 1 with measurement feedback.Be provided with relay 8 between described glow plug 4 and controller 1.
Ambient temperature is during lower than zero degree, the resistance of cooling-water temperature sensor 2 is greater than setting value, when electric lock 6 switches were in the ON position, the J point had both been exported high level, relay 8 adhesives, glow plug 4 gets electric, after pre-thermal light 5 extinguishes, the starting vehicle, electric lock 6 switches are placed in the START position, the S point becomes high level by low level, and glow plug 4 is proceeded heating.Meanwhile must conduct for solenoid 3, fuel oil burns rapidly by being ejected on the glow plug 4 of red heat for solenoid 3.The heat of its generation heats the air that diesel engine sucks.After the diesel engine starting success, the generator generating, the D+ end of generator becomes high level by low level, and controller 1 stops exporting high level.When ambient temperature was spent higher than 0, the resistance of cooling-water temperature sensor 2 was less than setting value, and controller 1 can not start glow plug 4.
Can be found out by above control principle, higher than zero degree, during bug check flame preheat system, must increase artificially the resistance of sensor when ambient temperature.Make this resistance greater than the setting value of controller.
Detecting switch 7 of series connection between controller 1 and cooling-water temperature sensor 2.During normal the use, detecting switch 7 is in channel status, the resistance that remains cooling-water temperature sensor 2 of input control device 1 inside.During the bug check pre-heating system, press detecting switch 7 in figure below, at this moment detecting switch 7 inner contact disconnect, and have cut off the path between controller 1 and cooling-water temperature sensor 2.The value of cooling-water temperature sensor 2 when it is worth greater than zero degree, controller 1 output high level starts glow plug 4 and heats, simultaneously the pre-thermal light bright 5 on instrument front.
Described detecting switch 7 can be integrated on preheating controller, also can be arranged on the control panel in operator cabin or on instrument panel.
Embodiment two
As shown in Figure 2, a kind of detection device of diesel engine flame pre-heating system, comprise controller 1 and the cooling-water temperature sensor 2 that is connected with controller 1, for solenoid 3, glow plug 4, pre-thermal light 5 and electric lock 6, described cooling-water temperature sensor 2 is arranged on to be positioned on diesel-engine body measures cooling water water temperature position; When starting vehicle electric lock 6, to controller 1, controller 1 is controlled the work for solenoid 3, glow plug 4 and pre-thermal light 5 to described cooling-water temperature sensor 2, is provided with detecting switch 7 between described cooling-water temperature sensor 2 and controller 1 with measurement feedback.Described detecting switch 7 two ends shunt resistors 9.
For the controller with online protective function, i.e. cooling-water temperature sensor 2 open circuits and short circuit (when resistance value is the zero-sum infinity), controller 1 can not start glow plug 4 and heat.Therefore can not check with the method that disconnects cooling-water temperature sensor 2 quality of pre-heating system.
Can find out from control principle, during higher than zero degree, want to make controller 1 to start glow plug 4 heating in ambient temperature, must seal in a resistance 9 between controller 1 and cooling-water temperature sensor 2.The resistance of resistance 9 is chosen according to the requirement of controller 1.Its resistance is between 500 ohm to 3000 ohm.During normal operation, detecting switch 7 short circuits resistance 9, resistance value is the actual value of cooling-water temperature sensor 2.During detection, Pen-down detection switch 7, resistance value is resistance 9 and cooling-water temperature sensor 2 sums, and controller 1 output high level starts glow plug 4 and heats, and pre-thermal light 5 is bright.Thereby reach in ambient temperature inspection to the flame preheat system during higher than zero degree.
In addition to the implementation, the utility model can also have other mode of executions, and all employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop in the protection domain of the utility model requirement.
Claims (3)
1. the detection device of a diesel engine flame pre-heating system, comprise controller (1) and the cooling-water temperature sensor (2) that is connected with controller (1), for solenoid (3), glow plug (4), pre-thermal light (5) and electric lock (6), described cooling-water temperature sensor (2) is arranged on and is positioned at measurement cooling water water temperature position on diesel-engine body; When starting vehicle electric lock (6) described cooling-water temperature sensor (2) with measurement feedback to controller (1), controller (1) is controlled the work for solenoid (3), glow plug (4) and pre-thermal light (5), it is characterized in that: be provided with detecting switch (7) between described cooling-water temperature sensor (2) and controller (1).
2. the detection device of diesel engine flame pre-heating system as claimed in claim 1, is characterized in that: be provided with relay (8) between described glow plug (4) and controller (1).
3. the detection device of diesel engine flame pre-heating system as claimed in claim 1, is characterized in that: described detecting switch (7) two ends shunt resistors (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293838 CN203271993U (en) | 2013-05-27 | 2013-05-27 | Detection device of diesel engine flame preheating system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320293838 CN203271993U (en) | 2013-05-27 | 2013-05-27 | Detection device of diesel engine flame preheating system |
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| Publication Number | Publication Date |
|---|---|
| CN203271993U true CN203271993U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320293838 Expired - Lifetime CN203271993U (en) | 2013-05-27 | 2013-05-27 | Detection device of diesel engine flame preheating system |
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| CN (1) | CN203271993U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291524A (en) * | 2013-05-27 | 2013-09-11 | 江苏柳工机械有限公司 | Detecting device of diesel engine flame preheating system |
| CN103821655A (en) * | 2014-03-04 | 2014-05-28 | 广西玉柴机器股份有限公司 | Preheating control device for engine start and control method thereof |
| CN109723594A (en) * | 2018-12-27 | 2019-05-07 | 湖北超能农业装备有限公司 | Engine cold starting control circuit, control method, device and storage medium |
-
2013
- 2013-05-27 CN CN 201320293838 patent/CN203271993U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103291524A (en) * | 2013-05-27 | 2013-09-11 | 江苏柳工机械有限公司 | Detecting device of diesel engine flame preheating system |
| CN103821655A (en) * | 2014-03-04 | 2014-05-28 | 广西玉柴机器股份有限公司 | Preheating control device for engine start and control method thereof |
| CN109723594A (en) * | 2018-12-27 | 2019-05-07 | 湖北超能农业装备有限公司 | Engine cold starting control circuit, control method, device and storage medium |
| CN109723594B (en) * | 2018-12-27 | 2021-08-10 | 湖北超能农业装备有限公司 | Engine cold start control circuit, control method, device and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220708 Address after: 213168 588 Yancheng South Road, Wujin hi tech Industrial Development Zone, Changzhou, Jiangsu Patentee after: LIUGONG CHANGZHOU MACHINERY Co.,Ltd. Address before: 212005 No.1 Ningzhen Road, Zhenjiang City, Jiangsu Province Patentee before: JIANGSU LIUGONG MACHINERY Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |