CN2913628Y - Temperature control circuit for vehicle engine cooling system - Google Patents
Temperature control circuit for vehicle engine cooling system Download PDFInfo
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- CN2913628Y CN2913628Y CN 200620110504 CN200620110504U CN2913628Y CN 2913628 Y CN2913628 Y CN 2913628Y CN 200620110504 CN200620110504 CN 200620110504 CN 200620110504 U CN200620110504 U CN 200620110504U CN 2913628 Y CN2913628 Y CN 2913628Y
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- 238000001816 cooling Methods 0.000 title claims abstract description 61
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 5
- 238000011084 recovery Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 8
- 230000009993 protective function Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000003990 capacitor Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
A temperature-control circuit for cooling system of automobile engine comprises a temperature sensor (1), a signal processing circuit (2), a control unit (3), a voltage stabilizing circuit (8), and an over-voltage protection circuit (7). The signal processing circuit (2) receives and process voltage signals outputted from the temperature sensor (1), and then the processed voltage signals are transmitted to the control unit (3). The control unit (3) is connected between the output terminal of the signal processing circuit (2) and the input terminal of a cooling control circuit (6). A control setting circuit (9) is arranged in a way that the output terminal thereof is connected with the input terminal of the control unit (3). This temperature-control circuit for the cooling system of automobile engine has the advantages that a temperature sensor is utilized to realize the engine temperature setting, overheat alarm and display control, has low cost, good versatility and high precision, can meet the requirement of temperature control of various engines, and has various protective functions such as over-voltage protection and load short-circuit protection.
Description
Technical Field
The utility model relates to an engine cooling control system, concretely relates to automobile engine cooling system's control by temperature change circuit.
Background
The existing automobile engine temperature control circuit has single function, and the display, alarm and control circuits respectively adopt different temperature sensors and control circuits, so that the structure is complex, the precision is low and the cost is high; different set temperatures are adopted by cooling systems of different vehicle types, and the set temperature of an engine cooling system is not adjustable, so that the temperature control mechanism of the existing cooling system is lack of universality; the existing automobile generally uses a fuse type or metal wire type fuse as load short-circuit protection, when the load of an engine cooling system has a short-circuit fault, the fuse is fused, the fault cannot be found in time due to no signal prompt, the safe operation of the engine is not facilitated, and when the short-circuit fault is relieved, the fuse needs to be replaced manually, so that the convenience is avoided, and the waste is caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a temperature control circuit of automobile engine cooling system with multiple functions is provided.
In order to solve the technical problem, the temperature control circuit of the engine cooling system of the present invention comprises a temperature sensor, a signal processing circuit, a cooling control circuit, a voltage stabilizing circuit, and an overvoltage protection circuit; wherein,
an overvoltage protection circuit: the automobile power supply is connected to supply power to the voltage stabilizing circuit;
voltage stabilizing circuit: receiving the voltage output by the overvoltage protection circuit and outputting the voltage to each circuit unit;
a temperature sensor: the temperature sensor in the cooling system of the automobile engine outputs signals to the signal processing circuit;
a cooling control circuit: the power is directly supplied by the automobile power supply, and the cooling mechanism on the automobile engine is controlled by the output signal.
The method is characterized in that: the signal processing circuit receives the voltage signal output by the temperature sensor, and outputs the voltage signal to the control unit after processing; the control unit is connected between the output end of the signal processing circuit and the input end of the cooling control circuit; an output of the control setting circuit is connected to an input of the control unit.
According to the utility model discloses a preferred scheme, an alarm circuit is still connected to the control unit's output.
According to a preferred aspect of the present invention, the output terminal of the control unit is further connected to a display circuit.
According to the utility model discloses a preferred scheme, overvoltage crowbar is by triode Q03, Q04, resistance R05, R04 and stabilivolt D04 are constituteed, triode Q03 and Q04's projecting pole is received to car storage battery voltage through diode D06, triode Q04's base is through series connection's resistance R05 and stabilivolt D04 power connection negative terminal, triode Q04's collecting electrode and triode Q03's base are connected, and connect the power supply negative terminal through resistance R04, triode Q03's collecting electrode connects voltage stabilizing circuit's input.
According to a preferred embodiment of the present invention, the cooling control circuit includes a relay J, a self-recovery fuse R06, and a switching transistor Q02; the coil contact of the relay J is connected between the collector of the switching triode Q02 and the positive power supply in series, the emitter of the switching triode Q02 is connected with the negative end of the power supply, and the base of the switching triode Q02 is connected with one output end of the control unit; and the normally open contact of the relay J, the self-recovery fuse R06 and the external cooling mechanism are connected in series at two ends of the automobile power supply.
According to the utility model discloses a preferred scheme, the control unit comprises singlechip IC33 and peripheral circuit, the control that corresponds sets up the circuit and is constituted by temperature preset switch W1, W2, electric memory IC34, resistance R326, R327, wherein temperature preset switch W1 inserts singlechip IC 33's an input/output port P0.0 after establishing ties with resistance R326, temperature preset switch W2 inserts singlechip IC 33's another input/output port P0.2 after establishing ties with resistance R327, two input/output ends of electric memory IC34 are connected with two input/output ports P5.3, P5.4 of singlechip IC33 respectively.
According to a preferred embodiment of the present invention, the control unit includes an a/D conversion circuit IC31 and its peripheral circuits. The corresponding control setting circuit is composed of resistors R31, R32, R33, R34 and a temperature preset potentiometer W, wherein the resistors R31, R32, R33, R34 and the potentiometer W are connected in series, meanwhile, the adjustable end of the temperature preset potentiometer W is connected with the non-inverting input end of a voltage comparator IC3-2, and the connecting node of the resistors R32 and R33 is connected with the inverting input end of the voltage comparator IC 3-1.
The temperature control circuit of the engine cooling system of the utility model adopts a temperature sensor to realize the alarm and display control of the temperature setting and the over-temperature of the engine, has low cost, strong universality and high precision, can be suitable for the requirements of different engines on temperature control, has multiple protection functions of overvoltage protection, load short-circuit protection and the like, and has high reliability; when the load has short-circuit fault, the temperature display is not influenced, and meanwhile, the short-circuit indication is provided, so that the fault can be found in time, the maintenance is convenient, and the system automatically restores to the normal working state after the short-circuit fault of the load is relieved.
Drawings
Fig. 1 is a schematic block diagram of a temperature control circuit of an engine cooling system according to the present invention.
Fig. 2 is a circuit diagram of a temperature control circuit of an engine cooling system implemented by a single chip microcomputer.
Fig. 3 is a circuit diagram of the temperature control circuit of the engine cooling system using analog control digital display according to the present invention.
Fig. 4 is a circuit diagram of the temperature control circuit of the engine cooling system using the analog control pointer display according to the present invention.
FIG. 5 is a flowchart of a single chip microcomputer controlled process.
Detailed Description
Referring to fig. 1, the temperature control circuit of the engine cooling system of the present invention is composed of a temperature sensor 1, a signal processing circuit 2, a control unit 3, a cooling control circuit 6, a voltage stabilizing circuit 8, an overvoltage protection circuit 7, and a control setting circuit 9; connecting a temperature sensor 1 in an automobile engine cooling system with a signal processing circuit 2, and outputting a signal to the signal processing circuit 2; the signal processing circuit 2 receives the voltage signal output by the temperature sensor 1, processes the voltage signal and outputs the processed voltage signal to the control unit 3; the control unit 3 is connected between the output end of the signal processing circuit 2 and the input end of the cooling control circuit 6; the output end of the control setting circuit 9 is connected to the input end of the control unit 3, the cooling control circuit 6 is directly powered by the automobile power supply 10, receives the control signal output by the control unit 3, and outputs a signal to control a cooling mechanism 11 on an automobile engine; in addition, the overvoltage protection circuit 7 is connected with an automobile power supply 10 to supply power to the voltage stabilizing circuit 8, and the voltage stabilizing circuit 8 supplies power to the circuit unit.
According to the utility model discloses a preferred scheme, an alarm circuit 5 is still connected to the output of the control unit 3, and alarm circuit 5 sends the warning when the voltage signal of engine temperature sensor output surpasses the value that control setting circuit 9 set for.
According to the utility model discloses a preferred scheme, a display circuit 4 is still connected to the output of the control unit 3, and display circuit 4 shows the engine temperature in real time.
Referring to fig. 2, 3 and 4, the signal processing circuit 2 is composed of resistors R21-R26, a zener diode D21, electrolytic capacitors C21, C22 and an operational amplifier IC 2; the voltage signal output by the temperature sensor 1 is input into a level shift amplifying circuit composed of operational amplifiers IC2, R23, R24R, 25R and 26 through R22, and the processed voltage signal is output to the control unit 3; c2 is filter capacitor to filter out noise signal, D21 is overvoltage protection voltage stabilizing diode to prevent the operation amplifier IC2 from damage by too high voltage.
The overvoltage protection circuit 7 is composed of triodes Q03 and Q04, resistors R05 and R04 and a voltage regulator tube D04, the voltage of an automobile battery is connected to the emitting electrodes of the triodes Q03 and Q04 through a diode D06, the base electrode of the triode Q04 is connected with the negative end of a power supply through a resistor R05 and the voltage regulator tube D04 which are connected in series, the collector electrode of the triode Q04 is connected with the base electrode of the triode Q03 and is connected with the negative end of the power supply through a resistor R04, and the collector electrode of the triode Q03 is connected with the input end of the voltage regulator circuit 8; when the power supply voltage is higher than the voltage-stabilizing value of the voltage-stabilizing diode D04, the voltage-stabilizing diode D04 breaks down, the resistor R05 provides base-level voltage for the triode Q04, the triode Q04 is conducted, the voltage at two ends of the base emitter of the triode Q03 is close to 0 volt, the triode Q03 is cut off, power supply to the voltage-stabilizing power supply 8 and the alarm circuit 5 is stopped, all circuits stop working, and the purpose of overvoltage protection is achieved; when the power supply voltage is normal, the voltage is lower than the voltage stabilizing value of the voltage stabilizing diode D04, the triode Q04 is cut off, the triode Q03 is conducted, and the circuit recovers the normal working state.
The cooling control circuit 6 consists of a relay J, light emitting diodes D08 and D09, diodes D05, D06 and D7, a voltage regulator tube D01, resistors R07 and R08, a self-recovery fuse R06 and a switch triode Q02; a coil contact of the relay J is connected between a collector of the switching triode Q02 and a positive power supply in series, an emitter of the switching triode Q02 is connected with the negative end of the power supply, and a base of the switching triode Q02 is connected with one output end of the control unit 3 through a voltage-stabilizing tube D01; a normally open contact of the relay J and a diode D07 are connected in series between the positive end and the negative end of a power supply, one end of a self-recovery fuse R06 is connected with the normally open contact of the relay J, and the other end of the self-recovery fuse R06 is connected with the cooling mechanism 11; the resistor R08 and the light-emitting diode D09 are connected in series and then connected between the cooling mechanism 11 and the negative terminal, the resistor R07 and the light-emitting diode D08 are connected in series and then bridged at two ends of the self-recovery fuse R06, when the cooling control circuit 6 works, the normally open contact of the relay J is attracted, if the cooling mechanism 11 is short-circuited, the resistance value of the self-recovery fuse R06 is increased, the voltage at two ends of the self-recovery fuse R06 is equal to the voltage at the positive terminal and the negative terminal of a power supply, the light-emitting diode D08 emits light, and a short-; when the short circuit of the cooling mechanism 11 is released, the resistance of the self-recovery fuse R06 is recovered to a normal value, and the circuit is recovered to the original working state.
The alarm circuit 5 is composed of resistors R03 and R02, a light-emitting diode D02, a triode Q01 and a buzzer B.
Referring to fig. 2, the control unit 3 is composed of a single chip IC33 and a peripheral circuit thereof, a program shown in fig. 5 is installed in the single chip, the single chip can select SN1704, the control setting circuit 9 is composed of temperature preset switches W1, W2, an electric memory IC34, resistors R326 and R327, wherein the temperature preset switch W1 is connected in series with the resistor R326 and then connected to an input/output port P0.0 of the single chip IC33, the temperature preset switch W2 is connected in series with the resistor R327 and then connected to an additional input/output port P0.2 of the single chip IC33, two input/output ports of the electric memory IC34 are respectively connected to two input/output ports P5.3 and P5.4 of the single chip IC33, and a control temperature value can be preset by adjusting the temperature preset switches W1 and W2 of the control setting circuit 9 and stored in the electric memory IC34 through the single chip IC33, thereby avoiding that a new preset temperature is required for each time; the temperature voltage signal output by the temperature sensor 1 is added to an input port P4.0 of the single chip microcomputer through the output end of the signal processing circuit 2, the temperature data of the single chip microcomputer is connected to the anode of the nixie tube LD1 after being amplified by the triodes Q31, Q32 and Q33 driven by the output ports P1.1, P1.2 and P1.3, the ports P5.0, P5.1, P5.2 and P4.1-P4.3 of the single chip microcomputer are respectively connected to the cathode of the nixie tube LD1 through the resistors R331-R337, and the nixie tube LD1 displays the temperature data. When the temperature of the engine rises, a temperature voltage signal output by the temperature sensor 1 is added to an input port P4.0 of the single chip microcomputer through an output end of the signal processing circuit 2, when the voltage signal received by the single chip microcomputer is greater than a preset control temperature value stored in an electric memory IC34, an output port P0.1 of the single chip microcomputer outputs a high level signal, a switch tube Q02 of the cooling control circuit 6 is conducted, a normally open contact of a relay J is attracted, the cooling mechanism 11 is driven to work, and the temperature of the engine is reduced; when the voltage signal received by the input port P4.0 of the single chip microcomputer is larger than the alarm temperature value, the output port P1.4 outputs a high level signal, the switch tube Q01 of the alarm circuit 5 is conducted, the alarm circuit 5 works, the horn B gives an alarm sound, and meanwhile, the light-emitting diode D02 gives out light.
Referring to fig. 3, the control unit 3 is composed of an a/D conversion circuit IC31 and its peripheral circuits, a voltage comparator IC3-1, an IC3-2, an IC3-3, an IC3-4 and its peripheral circuits, and the voltage comparator can be selected from LM 339. The corresponding control setting circuit 9 is composed of resistors R31, R32, R33, R34 and a temperature preset potentiometer W, wherein the resistors R31, R32, R33, R34 and the temperature preset potentiometer W are connected in series, meanwhile, the adjustable end of the temperature preset potentiometer W is connected with the non-inverting input end of a voltage comparator IC3-2, and the connecting node of the resistors R32 and R33 is connected with the inverting input end of the voltage comparator IC 3-1; the temperature voltage signal output by the temperature sensor 1 is added to the inverting input ends of the voltage comparator IC3-1 and IC3-2 through the output end of the signal processing circuit 2, and is simultaneously connected with the analog input port 31 of the A/D conversion circuit IC31, the digital output port of the A/D conversion circuit IC31 is connected with the digital tube LD1, the A/D conversion circuit IC31 converts the analog signal into a digital signal, and the temperature value is displayed through the digital tube LD 1; different voltages can be output by adjusting the adjustable end of the temperature preset potentiometer W, so that a control temperature value is preset; when the temperature of the engine rises, the temperature voltage signal output by the temperature sensor 1 is added to the equidirectional input end of the A/D conversion circuit IC31 and the voltage comparator IC3-1 and the reverse input end of the voltage comparator IC3-2 through the output end of the signal processing circuit 2, when the voltage of the temperature voltage signal is larger than the voltage output by the adjustable end of the temperature preset potentiometer W connected with the homophase input end of the comparator IC3-2, the voltage comparator IC3-2 outputs low level, the comparator IC3-3 is cut off, the voltage stabilizing circuit 8 charges the capacitor C33 through the resistor R38, the time delay function is realized, the pulse interference can be resisted, when the voltage of the capacitor C33 is larger than the voltage of the reverse input end of the voltage comparator IC3-4, the voltage comparator IC3-4 outputs high level, the switching tube Q02 of the cooling control circuit 6 is switched on, the normally open contact of the relay J is attracted, the cooling mechanism 11, and cooling the engine. After the temperature of the engine is reduced, when the voltage at the reverse input end of the voltage comparator IC3-2 is smaller than the voltage output by the adjustable end of the temperature preset potentiometer W connected with the non-inverting input end of the comparator IC3-2, the voltage comparator IC3-2 is cut off, the voltage stabilizing circuit 8 charges the capacitor C32 through the resistor R37, the time delay effect is achieved, the cooling control circuit 6 is prevented from being started too frequently at the temperature critical point, when the voltage of the capacitor C32 is larger than the voltage at the non-inverting input end of the voltage comparator IC3-3, the voltage comparator IC3-3 outputs a low level, the voltage comparator IC3-4 outputs a low level, the switching tube Q02 of the cooling control circuit 6 is cut off, the normally open contact of the relay J is disconnected, and the cooling mechanism 11 stops; when the voltage of the non-inverting input end of the voltage comparator IC3-1 is higher than the voltage of the inverting input end, the voltage comparator IC3-1 outputs high level, the switch tube Q01 of the alarm circuit 5 is conducted, at the moment, the temperature alarm circuit works, the horn B gives out alarm sound, and the light-emitting diode D02 gives out light.
Referring to fig. 4, the a/D conversion circuit IC31 and its peripheral circuits of fig. 3 are changed to an emitter follower IC32, and the display mode is changed to a header display mode.
Claims (9)
1. A temperature control circuit of an automobile engine cooling system comprises a temperature sensor (1), a signal processing circuit (2), a cooling control circuit (6), a voltage stabilizing circuit (8) and an overvoltage protection circuit (7); wherein,
overvoltage protection circuit (7): the automobile power supply (10) is connected to supply power to the voltage stabilizing circuit (8);
voltage stabilizing circuit (8): receiving the voltage output by the overvoltage protection circuit (12) and outputting the voltage to each circuit unit;
temperature sensor (1): is a temperature sensor in an automobile engine cooling system and outputs signals to a signal processing circuit (2);
cooling control circuit (6): the power is directly supplied by an automobile power supply (10), a cooling mechanism (11) on an automobile engine is controlled by an output signal,
the method is characterized in that:
signal processing circuit (2): the voltage signal output by the temperature sensor (1) is received and output to the control unit (3) after being processed; the control unit (3) is connected between the output end of the signal processing circuit (2) and the input end of the cooling control circuit (6); an output of a control setting circuit (9) is connected to an input of the control unit (3).
2. The temperature control circuit of a vehicle engine cooling system according to claim 1, characterized in that the output of the control unit (3) is further connected to an alarm circuit (5).
3. The temperature control circuit of a vehicle engine cooling system according to claim 2, characterized in that the output of the control unit (3) is further connected to a display circuit (4).
4. The temperature control circuit of the cooling system of the automobile engine as claimed in claim 1, wherein the overvoltage protection circuit (7) is composed of a triode Q03, a Q04, a resistor R05, a resistor R04 and a voltage regulator D04, the voltage of the automobile battery is connected to the emitter electrodes of the triodes Q03 and Q04 through a diode D06, the base electrode of the triode Q04 is connected to the negative terminal of the power supply through a resistor R05 and a voltage regulator D04 which are connected in series, the collector electrode of the triode Q04 is connected to the base electrode of the triode Q03 and is connected to the negative terminal of the power supply through a resistor R04, and the collector electrode of the triode Q03 is connected to the input end of the voltage regulator circuit (.
5. The thermostat circuit of a motor vehicle engine cooling system according to claim 1, characterized in that the cooling control circuit (6) comprises a relay J, a self-healing fuse R06 and a switching transistor Q02; the coil contact of the relay J is connected between the collector of the switching triode Q02 and a positive power supply in series, the emitter of the switching triode Q02 is connected with the negative end of the power supply, and the base of the switching triode Q02 is connected with one output end of the control unit (3); the normally open contact of the relay J, the self-recovery fuse R06 and the external cooling mechanism (11) are connected in series at two ends of the automobile power supply (10).
6. The temperature control circuit of an automotive engine cooling system according to claim 1 or 2 or 3 or 5, characterized in that the control unit (3) is composed of a single-chip microcomputer IC33 and its peripheral circuits.
7. The temperature control circuit of the cooling system of the automobile engine according to claim 1, wherein the control setting circuit (9) is composed of temperature preset switches W1, W2, an electric memory IC34, and resistors R326 and R327, wherein the temperature preset switch W1 is connected in series with the resistor R326 and then connected to one input/output port (P0.0) of the single chip IC33, the temperature preset switch W2 is connected in series with the resistor R327 and then connected to another input/output port (P0.2) of the single chip IC33, and two input/output ports of the electric memory IC34 are respectively connected to two input/output ports (P5.3 and P5.4) of the single chip IC 33.
8. The thermostat circuit of an automotive engine-cooling system according to claim 1 or 2 or 3 or 5, characterized in that the control unit (3) comprises an A/D converter circuit IC31 and its peripheral circuits.
9. The thermostat circuit of an automobile engine cooling system according to claim 1, characterized in that the control setting circuit (9) is composed of resistors R31, R32, R33, R34, and a temperature preset potentiometer W, wherein the resistors R31, R32, R33, R34, and the potentiometer W are connected in series, and meanwhile, the adjustable end of the temperature preset potentiometer W is connected with the non-inverting input end of the voltage comparator IC3-2, and the connecting node of the resistors R32, R33 is connected with the inverting input end of the voltage comparator IC 3-1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110504 CN2913628Y (en) | 2006-04-30 | 2006-04-30 | Temperature control circuit for vehicle engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110504 CN2913628Y (en) | 2006-04-30 | 2006-04-30 | Temperature control circuit for vehicle engine cooling system |
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| CN2913628Y true CN2913628Y (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620110504 Expired - Fee Related CN2913628Y (en) | 2006-04-30 | 2006-04-30 | Temperature control circuit for vehicle engine cooling system |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691563A (en) * | 2012-06-04 | 2012-09-26 | 郑州精益达汽车零部件有限公司高新区分公司 | Intelligent fan controller |
| CN104912648A (en) * | 2015-04-25 | 2015-09-16 | 成都诚邦动力测试仪器有限公司 | High-sensitive water temperature detecting system for engine |
| CN105258810A (en) * | 2015-11-23 | 2016-01-20 | 成都科瑞信科技有限责任公司 | Novel temperature alarm system of eddy current retarder |
| CN105424203A (en) * | 2015-11-23 | 2016-03-23 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system based on grid coupling amplification circuit |
| CN105444902A (en) * | 2015-11-23 | 2016-03-30 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system based on filtering circuit |
| CN105444901A (en) * | 2015-11-23 | 2016-03-30 | 成都科瑞信科技有限责任公司 | Hybrid oscillation type eddy current retarder temperature alarm system based on coupling amplification |
| CN105466581A (en) * | 2015-11-23 | 2016-04-06 | 成都科瑞信科技有限责任公司 | Filtering-type electric eddy current retarder temperature alarm system based on coupling amplification |
| CN105486417A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Novel temperature alarm system of eddy current retarder based on constant current source |
| CN105486418A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Temperature alarm system of eddy current retarder based on voltage-constant driving |
| CN105509907A (en) * | 2015-11-23 | 2016-04-20 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system with high sensitivity |
| CN105909365A (en) * | 2016-06-06 | 2016-08-31 | 浙江理工大学 | Automatic cooling system of automobile engine |
| CN106472353A (en) * | 2016-10-12 | 2017-03-08 | 四川森迪科技发展股份有限公司 | A kind of temperature control system of the chicken son's couveuse based on overvoltage crowbar |
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2006
- 2006-04-30 CN CN 200620110504 patent/CN2913628Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102691563A (en) * | 2012-06-04 | 2012-09-26 | 郑州精益达汽车零部件有限公司高新区分公司 | Intelligent fan controller |
| CN104912648A (en) * | 2015-04-25 | 2015-09-16 | 成都诚邦动力测试仪器有限公司 | High-sensitive water temperature detecting system for engine |
| CN105258810A (en) * | 2015-11-23 | 2016-01-20 | 成都科瑞信科技有限责任公司 | Novel temperature alarm system of eddy current retarder |
| CN105424203A (en) * | 2015-11-23 | 2016-03-23 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system based on grid coupling amplification circuit |
| CN105444902A (en) * | 2015-11-23 | 2016-03-30 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system based on filtering circuit |
| CN105444901A (en) * | 2015-11-23 | 2016-03-30 | 成都科瑞信科技有限责任公司 | Hybrid oscillation type eddy current retarder temperature alarm system based on coupling amplification |
| CN105466581A (en) * | 2015-11-23 | 2016-04-06 | 成都科瑞信科技有限责任公司 | Filtering-type electric eddy current retarder temperature alarm system based on coupling amplification |
| CN105486417A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Novel temperature alarm system of eddy current retarder based on constant current source |
| CN105486418A (en) * | 2015-11-23 | 2016-04-13 | 成都科瑞信科技有限责任公司 | Temperature alarm system of eddy current retarder based on voltage-constant driving |
| CN105509907A (en) * | 2015-11-23 | 2016-04-20 | 成都科瑞信科技有限责任公司 | Eddy current retarder temperature alarm system with high sensitivity |
| CN105909365A (en) * | 2016-06-06 | 2016-08-31 | 浙江理工大学 | Automatic cooling system of automobile engine |
| CN106472353A (en) * | 2016-10-12 | 2017-03-08 | 四川森迪科技发展股份有限公司 | A kind of temperature control system of the chicken son's couveuse based on overvoltage crowbar |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070620 Termination date: 20100430 |