CN201739001U - High/low speed control circuit for two automobile fans - Google Patents
High/low speed control circuit for two automobile fans Download PDFInfo
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- CN201739001U CN201739001U CN2010202340217U CN201020234021U CN201739001U CN 201739001 U CN201739001 U CN 201739001U CN 2010202340217 U CN2010202340217 U CN 2010202340217U CN 201020234021 U CN201020234021 U CN 201020234021U CN 201739001 U CN201739001 U CN 201739001U
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- relay
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- fan
- coil terminal
- water temperature
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Abstract
The utility model discloses a high/low speed control circuit for two automobile fans, which has the advantages of simplicity and adjustable control parameters (such as a set water temperature, the pressure of an air conditioning system, etc.), and overcomes the defects of the conventional control circuit such as complexity, high thermoswitch failure rate, etc.. The control circuit adopts the structure that relays, the two electronic fans and an engine ECU (electronic control unit) are included, wherein an output/input port P1 of the engine ECU is connected with a working coil terminal (86) of a relay A and a working coil terminal (85) of a relay B, and an output/input port P2 of the engine ECU is connected with a working coil terminal (85) of a relay C; a normally-open contact (30) and a working coil terminal (86) of the relay C, a working coil terminal (86) and a normally-open contact (87) of the relay B, and a working coil terminal (85) of the relay A are all connected with the anode of a 12V power supply; the cathode of the 12V power supply is connected with a normally-open contact (30) of the relay A and a terminal (1) of an electronic fan MD2; a terminal (2) of an electronic fan MD1 is connected with a normally-open contact (87) of the relay C, and a terminal (1) of the electronic fan MD1 is connected with a normally-closed contact (87a) of the relay B and a normally-open contact (87) of the relay A; and a terminal (2) of the electronic fan MD2 is connected with a contact (30) of the relay B.
Description
Technical field
The utility model relates to a kind of fan for cooling control of automobile cooling system, especially a kind of cooling fan control circuit.
Background technique
Single electron fan or bielectron fan are generally adopted in the cooling of car engine cooling system now.The control mode of electronic fan is a kind of to be to be made of thermoswitch (common have low temperature 80-95 degree centigrade conducting, 110 degrees centigrade of left and right sides conductings of high temperature), relay, and the shortcoming of sort circuit is the easy fault of thermoswitch, influence cooling system and moves; Another mode is that microprocessor is controlled.But in the microprocessor control mode, need special microprocessor modulation power source, sensor, relay etc., the available circuit more complicated.
Summary of the invention
The utility model provides the succinct parameter adjustment of a kind of control wiring automobile double fan height speed control system circuit easily.
The utility model is achieved through the following technical solutions: a kind of automobile double fan height speed control system circuit, comprise relay, electronic fan, it is characterized in that: also comprise Engine ECU, described Engine ECU I/O mouth P1 connects the actuating coil terminal (86) of relay A and the actuating coil terminal (85) of relay B simultaneously, and I/O mouth P2 connects the actuating coil terminal (85) of relay C; The actuating coil terminal (85) of the actuating coil terminal (86) of the normally opened contact of relay C (30) and actuating coil terminal (86), relay B and normally opened contact (87), relay A all is connected respectively to the 12V positive source; The 12V power cathode connects the normally opened contact (30) of relay A, the terminal (1) of electronic fan MD2 respectively; The terminal of electronic fan MD1 (2) connect the normally opened contact (87) of relay C, and the terminal of electronic fan MD1 (1) connect the normally-closed contact (87a) of relay B, the normally opened contact (87) of relay A respectively; The terminal of electronic fan MD2 (2) connect the contact (30) of relay B.The P1 port of Engine ECU and P2 port, (during this kind port output low potential is earth potential for the I/O port that adds direct current 12V Voltag driving circuit, during the output high petential is positive 12V, output during positive 12V since relay work winding two terminal potentials equate, therefore, not adhesive of relay), come the control relay action by the high or low of these two port output potentials, thus the operation of control electronic fan.
As preferably, described Engine ECU is connected with cooling-water temperature sensor and air-conditioning system pressure transducer.Cooling-water temperature sensor is used for measuring engine cooling water temperature, controls the double fan operating condition on this basis; The air-conditioning system pressure transducer is used for measuring the air-conditioning refrigerant system pressure, controls double fan on this basis and whether enters the state of running up.
As preferably, in described Engine ECU, be provided with according to the engine water temperature control device that detects water temperature and set water temperature decision double fan running state.More than or equal to 93 degrees centigrade during less than 99 degrees centigrade, Engine ECU P1 port is exported positive 12V high petential in water temperature, P2 port output earth potential, and double fan enters the low cruise state; During more than or equal to 99 degrees centigrade, Engine ECU P1 port and P2 port are exported earth potential simultaneously in water temperature, and double fan enters the state of running up, and changes double fan low cruise state when water temperature is lower than 95 degrees centigrade over to; During less than 87 degrees centigrade, motor P1 port and P2 port are exported positive 12V high petential simultaneously in water temperature, and double fan shuts down.
As preferably, in described Engine ECU, be provided with according to the air-conditioning system pressure control device that detects air-conditioning system pressure and air-conditioning system pressure set points decision double fan running state.During greater than 1.52MPa, Engine ECU P1 port and P2 port are exported earth potential to this device simultaneously at air-conditioning system pressure, three all adhesives of relay, and double fan runs up; Until air-conditioning system pressure during less than 1.25MPa, Engine ECU P1 port and P2 port are exported positive 12V high petential simultaneously, not adhesives of relay, and double fan shuts down, shield water temperature control in this process only allows air-conditioning system pressure parameter control double fan operating condition.
Beneficial effect
Compared with prior art, the beneficial effects of the utility model are:
1) used unit is few, and control wiring is succinct;
2) Control Parameter is owing to be arranged in the program, and is therefore easy to adjust, also increases other control parameters easily, makes motor be in better state of temperature;
3) utilize at the vacant port with Engine ECU, controlling component is easy for installation, and equipment utilization is more reasonable.
Description of drawings
Fig. 1 is the utility model circuit theory diagrams;
Fig. 2 uses novel water temperature control flow chart for this;
Fig. 3 is the utility model air-conditioning system pressure control flow chart.
Embodiment:
See also Fig. 1, the utility model provides a kind of automobile double fan height speed control system circuit, utilizes the running state of relay switching and the idle I/O port controlling of Engine ECU double fan.Particular circuit configurations is as follows: described Engine ECU I/O mouth P1 connects the actuating coil terminal (86) of relay A and the actuating coil terminal (85) of relay B simultaneously, and I/O mouth P2 connects the actuating coil terminal (85) of relay C; The actuating coil terminal (85) of the actuating coil terminal (86) of the normally opened contact of relay C (30) and actuating coil terminal (86), relay B and normally opened contact (87), relay A all is connected respectively to the 12V positive source; The 12V power cathode connects the normally opened contact (30) of relay A, the terminal (1) of electronic fan MD2 respectively; The terminal of electronic fan MD1 (2) connect the normally opened contact (87) of relay C, and the terminal of electronic fan MD1 (1) connect the normally-closed contact (87a) of relay B, the normally opened contact (87) of relay A respectively; The terminal of electronic fan MD2 (2) connect the contact (30) of relay B.
Analog amount input port in Engine ECU connects a cooling-water temperature sensor ST, is used to measure engine cooling water temperature, the control fan operating state.
Analog amount input port in Engine ECU connects a car air conditioner pressure transducer SP, is used for measured automobiles air-conditioning refrigerant system pressure, the control fan operating state.
The P1 port of Engine ECU and P2 port, (during this kind port output low potential is 0V for the I/O port that adds direct current 12V Voltag driving circuit, during the output high petential is positive 12V), by the break-make of these two port controlling relay contacts, thus the operation of control electronic fan.
In concrete control procedure, realize following three kinds of double fan state of a controls:
1) low speed control: Engine ECU I/O port P2 is a low level, when P1 is high level, relay C adhesive, the 12V positive source is through normally opened contact 30,87, and------relay B normally-closed contact 87a, 30---electronic fan MD2---12V power cathode form power loop to electronic fan MD1, MD1 and MD2 electronic fan are series in the 12V power loop, are operated in the low-speed running state;
2) high speed control: P2 is output as low level when Engine ECU I/O port, when P1 also is low level, C, B, all adhesives of A relay, the 12V positive source is through relay C normally opened contact 30,87---electronic fan MD1---relay A normally opened contact 87,30---12V power cathodes, electronic fan MD1 obtains specified terminal voltage 12V, thereby it is run up; The 12V positive source makes electronic fan MD2 obtain terminal voltage 12V, thereby it is also run up through relay B normally opened contact 87,30---electronic fan MD2---12V power cathode;
3) shut down: P2 is output as high level when Engine ECU I/O port, when P1 output also is high level, and relay C, B, not adhesives of A, therefore, electronic fan MD1, MD2 are not connected with power supply, make it be in the state of shutting down.
Therefore, the sort circuit structure running demand for control that satisfied high speed to double fan, low speed, stopped.
Double fan at a high speed, low speed and stop three kinds of conversions between operating condition and carry out according to following principle:
1) when engine water temperature during greater than 93 ℃, the double fan tick-over; Water temperature during less than 87 ℃ fan quit work;
2) when engine water temperature is equal to or higher than 99 ℃, the double fan high speed operation; Water temperature during less than 95 ℃ double fan convert tick-over to;
3) when turning on the aircondition, air-conditioning system pressure is during greater than 1.52MPa, the double fan high speed operation; When closing air-conditioning or pressure less than 1.25 MPa, double fan is not worked.
See also Fig. 2, this figure is the engine water temperature control flow chart of described control gear, and cell S 101 is 93 degrees centigrade of judging units of water temperature behind the engine start, if engine water temperature is lower than 93 degrees centigrade, then changes control unit S106 over to, and double fan does not turn round; If this moment, engine water temperature was equal to or higher than 93 degrees centigrade, then change 99 degrees centigrade of judging unit S102 of water temperature over to, if this moment, water temperature was equal to or higher than 99 degree, then change the double fan control unit S107 that runs up over to, make the double fan full-speed operation; If this moment, water temperature was lower than 99 degree, then change over to as front fan running state judging unit S103, if current double fan running state, then changes water temperature 95 degree judging unit S108 over to for running up, make water temperature change fan low speed control unit S104 when spending over to being lower than 95; If current double fan operates in lower-speed state, then change water temperature 87 degree judging unit S105 over to; In water temperature 87 degree judging units, if engine water temperature is equal to or higher than 87 degree, then change control unit S104 over to, be reduced to below 87 degree until water temperature; If engine water temperature is lower than 87 degree then changes control unit S106 over to, stop fan running; Change new one afterwards over to and take turns loop control.
See also Fig. 3, this figure is the air-conditioning system pressure control flow chart of described control gear, and cell S 201 is air-conditioning system pressure 1.52MPa judging units, when air-conditioning system pressure during less than 1.52MPa, changes control unit S206 over to, and double fan does not turn round; When air-conditioning system pressure during greater than 1.52MPa, no matter this moment, how high engine water temperature be, all to change double fan high speed operation state over to, therefore, at first change control unit S202 over to, the temperature control of shielding engine water changes the S203 control unit afterwards over to, order double fan run up (MD1 fan time-delay 3S start), reduce until air-conditioning system pressure, whether judging unit S204 judges air-conditioning system pressure less than 1.25MPa, when air-conditioning system pressure during less than 1.25MPa, then change control unit S205 over to, remove water temperature control shielding, prepare to accept the control of water temperature control unit, enter control unit S206 simultaneously, stop the double fan running, and change next loop control over to.
Claims (4)
1. automobile double fan height speed control system circuit, comprise relay, electronic fan, it is characterized in that: also comprise Engine ECU, described Engine ECU I/O mouth P1 connects the actuating coil terminal (86) of relay A and the actuating coil terminal (85) of relay B simultaneously, and I/O mouth P2 connects the actuating coil terminal (85) of relay C; The actuating coil terminal (85) of the actuating coil terminal (86) of the normally opened contact of relay C (30) and actuating coil terminal (86), relay B and normally opened contact (87), relay A all is connected respectively to the 12V positive source; The 12V power cathode connects the normally opened contact (30) of relay A, the terminal (1) of electronic fan MD2 respectively; The terminal of electronic fan MD1 (2) connect the normally opened contact (87) of relay C, and the terminal of electronic fan MD1 (1) connect the normally-closed contact (87a) of relay B, the normally opened contact (87) of relay A respectively; The terminal of electronic fan MD2 (2) connect the contact (30) of relay B.
2. according to the described automobile double fan height of claim 1 speed control system circuit, it is characterized in that: described Engine ECU is connected with cooling-water temperature sensor and air-conditioning system pressure transducer.
3. according to claim 1 or 2 described automobile double fan height speed control system circuit, it is characterized in that: in described Engine ECU, be provided with according to the engine water temperature control device that detects water temperature and set water temperature decision double fan running state.
4. according to claim 1 or 2 described automobile double fan height speed control system circuit, it is characterized in that: in described Engine ECU, be provided with according to the air-conditioning system pressure control device that detects air-conditioning system pressure and air-conditioning system pressure set points decision double fan running state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202340217U CN201739001U (en) | 2010-06-23 | 2010-06-23 | High/low speed control circuit for two automobile fans |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202340217U CN201739001U (en) | 2010-06-23 | 2010-06-23 | High/low speed control circuit for two automobile fans |
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| CN201739001U true CN201739001U (en) | 2011-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202340217U Expired - Fee Related CN201739001U (en) | 2010-06-23 | 2010-06-23 | High/low speed control circuit for two automobile fans |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418584A (en) * | 2011-10-27 | 2012-04-18 | 中通客车控股股份有限公司 | Heat management control device and control method for power assembly of vehicle |
| CN102889229A (en) * | 2012-10-31 | 2013-01-23 | 无锡商业职业技术学院 | Automobile cooling fan control circuit |
| CN103883544A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Control method and control device for engine cooling fan |
| CN103883545A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Control method and device of engine cooling fan |
| 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 |
| CN106224073A (en) * | 2016-08-31 | 2016-12-14 | 北京新能源汽车股份有限公司 | A kind of double fan method for controlling number of revolution, device and automobile |
| CN112431783A (en) * | 2020-11-27 | 2021-03-02 | 江西昌河汽车有限责任公司 | Double-speed fan abnormity diagnosis system and diagnosis method thereof |
-
2010
- 2010-06-23 CN CN2010202340217U patent/CN201739001U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418584A (en) * | 2011-10-27 | 2012-04-18 | 中通客车控股股份有限公司 | Heat management control device and control method for power assembly of vehicle |
| 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 |
| CN102889229A (en) * | 2012-10-31 | 2013-01-23 | 无锡商业职业技术学院 | Automobile cooling fan control circuit |
| CN103883544A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Control method and control device for engine cooling fan |
| CN103883545A (en) * | 2012-12-20 | 2014-06-25 | 北汽福田汽车股份有限公司 | Control method and device of engine cooling fan |
| CN103883545B (en) * | 2012-12-20 | 2016-03-16 | 北汽福田汽车股份有限公司 | The controlling method of cooling fan of engine and device |
| CN106224073A (en) * | 2016-08-31 | 2016-12-14 | 北京新能源汽车股份有限公司 | A kind of double fan method for controlling number of revolution, device and automobile |
| CN112431783A (en) * | 2020-11-27 | 2021-03-02 | 江西昌河汽车有限责任公司 | Double-speed fan abnormity diagnosis system and diagnosis method thereof |
| CN112431783B (en) * | 2020-11-27 | 2022-06-24 | 江西昌河汽车有限责任公司 | Double-speed fan abnormity diagnosis system and diagnosis method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG HAOQING AUTO MANUFACTURING CO., LTD.;ZHEJ Free format text: FORMER NAME: ZHEJIANG HAOQING AUTOMOBILE CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 317000 Jili Industrial Zone, Chengdong Economic Development Zone, Linhai City, Zhejiang Co-patentee after: Zhejiang Geely Holding Group Co., Ltd. Patentee after: Zhejiang Haoqing Auto Manufacturing Co., Ltd. Address before: 317000 Taizhou City, Zhejiang Province Economic Development Zone, Geely Industrial Park Co-patentee before: Zhejiang Geely Holding Group Co., Ltd. Patentee before: Zhejiang Haoqing Automobile Manufacturing Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110209 Termination date: 20170623 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |