CN202181943U - Electronic fan control circuit of engine - Google Patents
Electronic fan control circuit of engine Download PDFInfo
- Publication number
- CN202181943U CN202181943U CN2011202626115U CN201120262611U CN202181943U CN 202181943 U CN202181943 U CN 202181943U CN 2011202626115 U CN2011202626115 U CN 2011202626115U CN 201120262611 U CN201120262611 U CN 201120262611U CN 202181943 U CN202181943 U CN 202181943U
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- CN
- China
- Prior art keywords
- engine
- rheostat
- electronic fan
- control unit
- drive motor
- 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.)
- Expired - Fee Related
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Abstract
An electronic fan control circuit of an engine consists of an engine control unit, an electronic fan rotating speed sensor, an engine water temperature sensor, a relay, a sliding rheostat and a rheostat servo drive motor. Signal output ends of the electronic fan rotating speed sensor and the engine water temperature sensor are connected to different input ports of the engine control unit, a normally open contact of the relay controls an electronic fan to servo drive the motor through the sliding rheostat, a control coil of the relay is connected to an output end of the engine control unit, a control end of the rheostat servo drive motor is connected to an output end of the engine control unit, and an output gear of the rheostat servo drive motor controls a sliding end of the sliding rheostat through a rack. The electronic fan control circuit of the engine is high in speed regulation and capable of ensuring that the engine runs at the most appropriate temperature, improves performance of the engine, enables the electronic fan to be started smoothly and steadily, effectively protects safety of the electronic fan and a power supply system of the electronic fan and enhances comfort of a whole vehicle.
Description
Technical field
The utility model relates to a kind of circuit that can rationally control its cool electronic fan rotating speed according to engine operating condition, belongs to the control technique field.
Background technique
The performance of motor and the temperature of engine cooling water have substantial connection; The electronics fan is a critical piece of regulating engine water temperature, and traditional electronics fan control circuit is as shown in Figure 1, and sort circuit adopts the method for series connection fixed value resistance to reduce the rotating speed of electronics fan; Can only realize the two-stage speed governing; The rotational speed regulation precision is too low, can't make engine water temperature and load matched well, is unfavorable for improving the performance of motor.In addition, when adopting traditional control circuit, electronics fan inrush current is bigger, and the peak voltage that produces during startup and inrush current can threaten electronics to fan and the safety of power supply system, and starting torque is bigger, can reduce the travelling comfort of car load.Therefore, be necessary existing electronics fan control circuit is improved.
The model utility content
The purpose of the utility model be to overcome existing technology deficiency, provide a kind of and can make smooth starting of electronics fan and the high Motronic control maps fan control circuit of adjusting speed accuracy.
The purpose of the utility model realizes with following technical proposals:
A kind of Motronic control maps fan control circuit; Form by control unit of engine, electronics fan speed probe, engine water temperature sensor, relay, slide rheostat and rheostat servo drive motor; The different input ports of the signal output part sending and receiving motivation control unit of said electronics fan speed probe and engine water temperature sensor; The normally opened contact of said relay is through slide rheostat control electronics fan drive motor; The output port of its control coil sending and receiving motivation control unit, the output port of the control end sending and receiving motivation control unit of said rheostat servo drive motor, its output gear is through the sliding end of tooth bar control slide rheostat.
Above-mentioned Motronic control maps fan control circuit, said electronics fan speed probe adopts hall sensor; Said cooling-water temperature sensor adopts the polysilicon temp sensor.
The utility model is regulated the voltage that is added in electronics fan two ends with the divider resistance of slide rheostat as the electronics fan through the resistance that changes slide rheostat, thereby reaches the purpose of regulating electronics fan rotating speed.This circuit adjusting speed accuracy is high, can guarantee that motor turns round under optimum temperature, improves the performance of motor, and can make the smooth starting of electronics fan, has effectively protected the safety of electronics fan and power supply system thereof, has improved the travelling comfort of car load.
Description of drawings
Fig. 1 is the electrical schematic diagram of conditional electronic fan control circuit;
Fig. 2 is the electrical schematic diagram of the utility model.
Each label is among the figure: ECU, control unit of engine; N, electronics fan speed probe; T, engine water temperature sensor; J, relay; W, slide rheostat; M1, electronics fan drive motor; M2, rheostat servo drive motor; R, resistance; K1, K2, switch.
Embodiment
Referring to Fig. 2, the utility model comprises control unit of engine ECU, electronics fan speed probe n, engine water temperature sensor t, relay J, slide rheostat W and electronics fan drive motor M1.Control unit of engine ECU and engine water temperature sensor t are former car accessory, do not increase integral vehicle cost.
This device can make engine coolant temperature and load keep coupling, improves engine performance.Temperature is higher during sub load, helps reducing oil consumption and discharge of poisonous waste; Temperature is low during full load, helps improving power.
The working procedure of the utility model:
(1) startup of electronics fan: when needing to start the electronics fan, ECU at first transfers to maximum through rheostat servo drive motor M2 with the resistance of slide rheostat W, sends power on signal to relay J then.Because the electronics fan is cascaded with slide rheostat W, so electronics fan voltage is lower, the rotating speed of startup is also lower.
(2) raising and the reduction of electronics fan rotating speed: ECU sends working signal to rheostat servo drive motor M2; Rheostat servo drive motor M2 running; Regulate the position of slide rheostat W sliding end through tooth bar; When the resistance of slide rheostat W by greatly to little variation the time, electronics fan voltage increases gradually, rotating speed improves thereupon; On the contrary, when the resistance of slide rheostat W was changed from small to big, electronics fan voltage reduced gradually, and rotating speed descends thereupon.After ECU detects electronics fan and reaches the speed of setting, send power-off signal to rheostat servo drive motor M2, make it to shut down, this moment, relay J still was in closed state, and the electronics fan turns round with constant speed.
(3) stall of electronics fan: ECU sends working signal to rheostat servo drive motor M2 earlier; To big variation, electronics fan voltage reduces the resistance that makes slide rheostat W gradually by little, and rotating speed descends thereupon; When the resistance of slide rheostat W increases to maximum; Electronics fan rotating speed is minimum, and ECU successively starts power-off signal to rheostat servo drive motor M2, relay J, and rheostat servo drive motor M2, electronics fan quit work.
Claims (2)
1. a Motronic control maps is fanned control circuit; It is characterized in that; It is made up of control unit of engine (ECU), electronics fan speed probe (n), engine water temperature sensor (t), relay (J), slide rheostat (W) and rheostat servo drive motor (M2); The different input ports of the signal output part sending and receiving motivation control unit (ECU) of said electronics fan speed probe (n) and engine water temperature sensor (t); The normally opened contact of said relay (J) is through slide rheostat (W) control electronics fan drive motor (M1); The output port of its control coil sending and receiving motivation control unit (ECU), the output port of the control end sending and receiving motivation control unit (ECU) of said rheostat servo drive motor (M2), its output gear is controlled the sliding end of slide rheostat (W) through tooth bar.
2. according to the said Motronic control maps fan of claim 1 control circuit, it is characterized in that said electronics fan speed probe (n) adopts hall sensor; Said cooling-water temperature sensor (t) adopts the polysilicon temp sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202626115U CN202181943U (en) | 2011-07-25 | 2011-07-25 | Electronic fan control circuit of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202626115U CN202181943U (en) | 2011-07-25 | 2011-07-25 | Electronic fan control circuit of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202181943U true CN202181943U (en) | 2012-04-04 |
Family
ID=46174983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202626115U Expired - Fee Related CN202181943U (en) | 2011-07-25 | 2011-07-25 | Electronic fan control circuit of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202181943U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775186B (en) * | 2012-10-17 | 2016-04-27 | 重庆长安汽车股份有限公司 | Two automobile fans three-step timing control circuit and controlling method |
-
2011
- 2011-07-25 CN CN2011202626115U patent/CN202181943U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103775186B (en) * | 2012-10-17 | 2016-04-27 | 重庆长安汽车股份有限公司 | Two automobile fans three-step timing control circuit and controlling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120404 Termination date: 20170725 |