CN103375422A - The control system of hydraulic fan, method and engine-cooling system - Google Patents
The control system of hydraulic fan, method and engine-cooling system Download PDFInfo
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- CN103375422A CN103375422A CN2013103440530A CN201310344053A CN103375422A CN 103375422 A CN103375422 A CN 103375422A CN 2013103440530 A CN2013103440530 A CN 2013103440530A CN 201310344053 A CN201310344053 A CN 201310344053A CN 103375422 A CN103375422 A CN 103375422A
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Abstract
The invention discloses the hydraulic fan system of vehicle, comprise the oil hydraulic motor that import is communicated with oil hydraulic pump and is located at the export pipeline of oil hydraulic pump with fuel tank, the wheel rotation of fluid motor-driven hydraulic fan, also be provided with the flow control valve that enters the hydraulic fan hydraulic fluid flow rate for control, the valve port opening of flow control valve is by the engine electronic control unit control of vehicle; The control unit of other power units such as the control of hydraulic fan and motor is integrated in this invention, the common engine electronic control unit that uses is controlled, not only can save the user cost of vehicle, and for the compact type vehicle, the space that this hydraulic fan system occupies is less, satisfy the global design demand of car body, optimize vehicle general arrangement, more be conducive to enlarge the application area of fan hydraulic system.In addition, on the basis of above-mentioned hydraulic fan system, the invention also discloses a kind of engine-cooling system with the controlling method of hydraulic fan system.
Description
Technical field
The present invention relates to the heat-dissipating part technical field, particularly a kind of control system of hydraulic fan, method and engine-cooling system.
Background technique
The hydraulic fan system is one of important component part in a kind of engine-cooling system that is applied to engineering machinery, it has the adjustable characteristics of rotation speed of the fan, and hydraulic fan rotating speed and engine speed are irrelevant, only relevant with temperature and the ambient temperature of heat dissipating capacity, the medium that is cooled (such as water, hydraulic pressure wet goods), can guarantee to be cooled medium constant-temperature work, take the advantages such as smaller thereby reduce engine scuffing/installing space, more and more be widely used on the products such as engineering machinery, bus, railway, haulage vehicle now.
The hydraulic fan system comprises hydraulic fan, volume adjustable hydraulic pump, motor and controller, hydraulic oil in the fuel tank enters oil hydraulic pump from the entrance of volume adjustable hydraulic pump, after pumping, outlet enters motor, thereby drive motor drives hydraulic fan and rotates, and the aperture of volume adjustable hydraulic pump has determined hydraulic oil what it pumps.
Wherein, the aperture of volume adjustable hydraulic pump is to be controlled by controller, because volume adjustable hydraulic pump of the prior art is to control its internal electromagnetic valve opening by current signal, reach Flow-rate adjustment, so controller of the prior art is independently controller special and that oil hydraulic pump carries out supporting setting.
Hydraulic fan is normally controlled separately by the controller of design supporting with it in the prior art, like this, will certainly increase the user cost of vehicle, and for the compact dilly of structure, its installing space is very limited, controller is set separately not only to be needed to occupy certain space, and the wiring between coupled each parts of controller also takes up space, and is unfavorable for the general arrangement of car body.
Therefore, how to improve the structure of hydraulic fan system in the prior art, make its general arrangement demand that satisfies car body, and save the user cost of vehicle, the technical problem that those skilled in that art are needed to be resolved hurrily.
Summary of the invention
Purpose of the present invention is for providing a kind of hydraulic fan system, and this hydraulic fan system satisfies the global design demand of car body, optimizes vehicle general arrangement, and saves the user cost of vehicle.Another object of the present invention is for providing a kind of hydraulic fan controlling method and engine-cooling system.
For solving the problems of the technologies described above, the invention provides a kind of hydraulic fan system of vehicle, comprise the oil hydraulic motor that import is communicated with oil hydraulic pump and is located at the export pipeline of described oil hydraulic pump with fuel tank, the wheel rotation of described fluid motor-driven hydraulic fan, also be provided with the flow control valve that enters described hydraulic fan hydraulic fluid flow rate for control, the valve port opening of described flow control valve is by the engine electronic control unit control of vehicle.
Preferably, be provided with the pulse duration modulation module in the described engine electronic control unit, described pulse duration modulation module is regulated the valve port of described flow control valve by the pulse width modulating signal dutycycle, the predetermined work frequency match of described pulse width modulating signal dutycycle and described flow control valve.
Preferably, comprise that also described engine electronic control unit is in the preset range engine water temperature according to the size of the described pulse width modulating signal dutycycle of described engine water temperature Signal Regulation for the collecting unit that gathers the engine water temperature signal; When described engine electronic control unit judges that engine water temperature is lower than preset range, increase described pulse width modulating signal dutycycle; When described engine electronic control unit judges that engine water temperature is higher than preset range, reduce described pulse width modulating signal dutycycle.
Preferably, described oil hydraulic pump is volume adjustable hydraulic pump, and it is inner that described flow control valve is integrated in described volume adjustable hydraulic pump.
Preferably, described volume adjustable hydraulic pump is variable piston formula oil hydraulic pump.
Preferably, described oil hydraulic pump is quantitative hydraulic pump, and described flow control valve is the pressure-gradient control valve that is arranged on the connecting pipeline of described oil hydraulic pump and described hydraulic fan.
The valve port opening of flow control valve is by the engine electronic control unit control of vehicle in the hydraulic fan provided by the present invention system, with controller is set separately in the prior art controls and compare, the control unit of other power units such as the control of hydraulic fan and motor is integrated, the common engine electronic control unit that uses is controlled, not only can save the user cost of vehicle, and for the compact type vehicle, the space that this hydraulic fan system occupies is less, satisfy the global design demand of car body, optimize vehicle general arrangement, more be conducive to enlarge the application area of fan hydraulic system.
On the basis of above-mentioned hydraulic fan system, the present invention also provides a kind of engine-cooling system, comprises motor and hydraulic fan system, and described hydraulic fan system is above-mentioned each described hydraulic fan system.
In addition, the present invention also provides a kind of hydraulic fan controlling method of vehicle, comprise the oil hydraulic motor that import is communicated with oil hydraulic pump and is located at the export pipeline of described oil hydraulic pump with fuel tank, the wheel rotation of described fluid motor-driven hydraulic fan, also be provided with the flow control valve that enters described hydraulic fan hydraulic fluid flow rate for control, the valve port opening of described flow control valve is by the engine electronic control unit control of vehicle.
Preferably, described engine electronic control unit is regulated the valve port of described flow control valve by the pulse width modulating signal dutycycle, the predetermined work frequency match of described pulse width modulating signal dutycycle and described flow control valve.
Preferably, also further gather the engine water temperature signal, it is as follows specifically to control step:
S1, collection engine water temperature signal;
S2, according to engine water temperature calculated signals engine water temperature T and judge T and preset range in the size of minimum temperature Tmin and Tmax; When ECU judges Tmin≤T≤Tmax, return step S1; If during T＜Tmin, execution in step S3; When T＞Tmax, execution in step S4;
S3, the described pulse width modulating signal dutycycle of increase are in the preset range engine water temperature;
S4, reduce described pulse width modulating signal dutycycle, engine water temperature is in the preset range.
Because engine-cooling system has above-mentioned hydraulic fan system, and above-mentioned hydraulic fan controlling method is to implement on the basis of above-mentioned hydraulic fan system, so engine-cooling system and hydraulic fan controlling method all have the technique effect of above-mentioned hydraulic fan.
Description of drawings
Fig. 1 is the connection block diagram of hydraulic fan control system in a kind of specific embodiment of the present invention;
Fig. 2 is the flow chart of hydraulic fan controlling method in a kind of specific embodiment of the present invention;
Fig. 3 is the current controling characteristic curve synoptic diagram of a kind of flow control valve provided by the present invention.
Embodiment
Core of the present invention is for providing a kind of hydraulic fan system, and this hydraulic fan system satisfies the global design demand of car body, optimizes vehicle general arrangement, and saves the user cost of vehicle.Another core of the present invention is for providing a kind of hydraulic fan controlling method and engine-cooling system.
In order to make those skilled in the art understand better technological scheme of the present invention, below in conjunction with hydraulic fan control system and controlling method, the present invention is described in further detail for the drawings and specific embodiments.
Please refer to Fig. 1, Fig. 1 is the connection block diagram of hydraulic fan control system in an embodiment of the present invention.
The invention provides a kind of hydraulic fan system of vehicle, comprise that import is communicated with oil hydraulic pump with fuel tank, oil hydraulic pump can be the volume adjustable hydraulic pump that can regulate of work cavity volume, also can be quantitative hydraulic pump, be provided with oil hydraulic motor on the export pipeline of oil hydraulic pump, the wheel rotation of fluid motor-driven hydraulic fan, also be provided with the flow control valve that enters the hydraulic fan hydraulic fluid flow rate for control in the hydraulic fan system, enter hydraulic fluid flow rate in the hydraulic fan by Flux Valve Control, control hydraulic fan wheel rotation speed.
Flow control valve can also can be controlled the flow of oil hydraulic pump outlet by the flow of oil hydraulic pump import, thereby the flow that can certainly control the oil hydraulic motor outlet realizes regulating the purpose that enters hydraulic fluid flow rate in the hydraulic fan.
The valve port opening of flow control valve is by the engine electronic control unit control (Electronic Control Unit is called for short ECU) of vehicle among the present invention.
The valve port opening of flow control valve is by the engine electronic control unit control of vehicle in the hydraulic fan provided by the present invention system, with controller is set separately in the prior art controls and compare, the control unit of other power units such as the control of hydraulic fan and motor is integrated, the common engine electronic control unit that uses is controlled, not only can save the user cost of vehicle, and for the compact type vehicle, the space that this hydraulic fan system occupies is less, satisfy the global design demand of car body, optimize vehicle general arrangement, more be conducive to enlarge the application area of fan hydraulic system.
Usually, existing ECU control mode is the voltage signal pattern, and the valve port opening of flow control valve generally is to regulate by the size of electric current, and flow control valve has negative control pattern, namely current signal hour, hydraulic fluid flow rate is larger; Electric current is larger, and hydraulic fluid flow rate is less.Hydraulic fan running rotating speed was just high when hydraulic fluid flow rate was larger, and cooling performance is good, and the fan running speed was just low when flow was low, and cooling performance is just poorer.
Please refer to Fig. 3, Fig. 3 is the current controling characteristic curve synoptic diagram of a kind of flow control valve provided by the present invention; Abscissa represents amperage among the figure, and the y coordinate working pressure gives maximum adjustable control pressure P max and minimum adjustable control pressure P min among the figure.
In a kind of concrete mode of execution, can be provided with pulse duration modulation (Pulse Width Modulation in the engine electronic control unit, be called for short PWM) module, the pulse duration modulation module is regulated the valve port of described flow control valve by the pulse width modulating signal dutycycle, and the operating current of flow control valve is remained within the nominal working range; Wherein, the predetermined work frequency match of pulse width modulating signal dutycycle and flow control valve.
This mode of execution is converted into current controling signal by the pwm signal dutycycle with the voltage control signal of ECU, need not to increase other hardware devices, not only saves cost, and system architecture is simplified more, further satisfies the car load design requirement, optimizes the car load design.
Certainly, the mode that the voltage control signal of ECU is converted into current controling signal is not limited to foregoing description, also can be other modes, for example uses rheostat, realizes the conversion of voltage signal and current signal by the resistance of standardsizing rheostat.
Further, the hydraulic fan system can also comprise for the collecting unit that gathers the engine water temperature signal, engine electronic control unit is in the preset range engine water temperature according to the size of engine water temperature Signal Regulation pulse width modulating signal dutycycle; When described engine electronic control unit judges that engine water temperature is lower than preset range, increase described pulse width modulating signal dutycycle; When engine electronic control unit judges that engine water temperature is higher than preset range, reduce described pulse width modulating signal dutycycle.
Please comprehensive reference Fig. 2, Fig. 2 is the flow chart of hydraulic fan controlling method in a kind of specific embodiment of the present invention; The step of the controlling method of concrete hydraulic fan can be with reference to following:
S1, collection engine water temperature signal;
S2, according to engine water temperature calculated signals engine water temperature T and judge T and preset range in the size of minimum temperature Tmin and Tmax; When ECU judges Tmin≤T≤Tmax, return step S1; If during T＜Tmin, execution in step S3; When T＞Tmax, execution in step S4;
S3, the described pulse width modulating signal dutycycle of increase are in the preset range engine water temperature;
S4, reduce described pulse width modulating signal dutycycle, engine water temperature is in the preset range.
In the respective embodiments described above, oil hydraulic pump can be volume adjustable hydraulic pump, and flow control valve is integrated in volume adjustable hydraulic pump inside, and two component integrations in one, be need not wiring between the two, and further simplified structure improves efficiency of assembling.
Wherein, a kind of preferred embodiment in, volume adjustable hydraulic pump can be variable piston formula oil hydraulic pump; The pluger type hydraulic pump working flow mainly is controlled by swashplate angle, each plunger type cylinder body is with regard to a similar injector, the larger every plunger type cylinder body inhalant liquid force feed in inclination angle is larger, and along with the rotatingshaft rotation, it is also more to turn to another side every plunger type cylinder body release hydraulic oil.The flow control valve iron core just is equivalent to leverage forces the oil hydraulic pump swashplate angle to change under electromagnetic force, and electric current is less, electromagnetic force is also smaller, and swash plate keeps than large inclined angle, and at this moment the oil hydraulic pump flow is larger; When electric current is larger, electromagnetic force is stronger, spring generation deformation quantity is larger, this moment, swashplate angle was just less, the oil hydraulic pump flow is just less.
Certainly, above-mentioned oil hydraulic pump also can be quantitative hydraulic pump, and flow control valve is the pressure-gradient control valve that is arranged on the connecting pipeline of described oil hydraulic pump and described hydraulic fan, and unnecessary hydraulic oil can be used for through pressure-gradient control valve other fluid pressure drive device.
On the basis of above-mentioned hydraulic fan system, the present invention also provides a kind of engine-cooling system, comprises motor and hydraulic fan system, and described hydraulic fan system is the hydraulic fan system described in above-mentioned arbitrary mode of execution.
Because above-mentioned engine system has the hydraulic fan system, so this engine system already has the beneficial effect of above-mentioned hydraulic fan.
Other data of engine-cooling system please refer to prior art, do not repeat them here.
More than a kind of hydraulic fan provided by the present invention system is described in detail.Used specific case herein principle of the present invention and mode of execution are set forth, above embodiment's explanation just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (10)
1. the hydraulic fan system of a vehicle, comprise the oil hydraulic motor that import is communicated with oil hydraulic pump and is located at the export pipeline of described oil hydraulic pump with fuel tank, the wheel rotation of described fluid motor-driven hydraulic fan, also be provided with the flow control valve that enters described hydraulic fan hydraulic fluid flow rate for control, it is characterized in that the valve port opening of described flow control valve is by the engine electronic control unit control of vehicle.
2. hydraulic fan as claimed in claim 1 system, it is characterized in that, be provided with the pulse duration modulation module in the described engine electronic control unit, described pulse duration modulation module is regulated the valve port of described flow control valve by the pulse width modulating signal dutycycle, the predetermined work frequency match of described pulse width modulating signal dutycycle and described flow control valve.
3. hydraulic fan as claimed in claim 2 system, it is characterized in that, also comprise for the collecting unit that gathers the engine water temperature signal, described engine electronic control unit is in the preset range engine water temperature according to the size of the described pulse width modulating signal dutycycle of described engine water temperature Signal Regulation; When described engine electronic control unit judges that engine water temperature is lower than preset range, increase described pulse width modulating signal dutycycle; When described engine electronic control unit judges that engine water temperature is higher than preset range, reduce described pulse width modulating signal dutycycle.
4. such as each described hydraulic fan system of claims 1 to 3, it is characterized in that described oil hydraulic pump is volume adjustable hydraulic pump, it is inner that described flow control valve is integrated in described volume adjustable hydraulic pump.
5. hydraulic fan as claimed in claim 4 system is characterized in that described volume adjustable hydraulic pump is variable piston formula oil hydraulic pump.
6. such as each described hydraulic fan system of claims 1 to 3, it is characterized in that described oil hydraulic pump is quantitative hydraulic pump, described flow control valve is the pressure-gradient control valve that is arranged on the connecting pipeline of described oil hydraulic pump and described hydraulic fan.
7. an engine-cooling system comprises motor and hydraulic fan system, it is characterized in that, described hydraulic fan system is each described hydraulic fan system of claim 1 to 6.
8. the hydraulic fan controlling method of a vehicle, comprise the oil hydraulic motor that import is communicated with oil hydraulic pump and is located at the export pipeline of described oil hydraulic pump with fuel tank, the wheel rotation of described fluid motor-driven hydraulic fan, also be provided with the flow control valve that enters described hydraulic fan hydraulic fluid flow rate for control, it is characterized in that the valve port opening of described flow control valve is by the engine electronic control unit control of vehicle.
9. hydraulic fan controlling method as claimed in claim 8, it is characterized in that, described engine electronic control unit is regulated the valve port of described flow control valve by the pulse width modulating signal dutycycle, the predetermined work frequency match of described pulse width modulating signal dutycycle and described flow control valve.
10. hydraulic fan controlling method as claimed in claim 9 is characterized in that, also further gathers the engine water temperature signal, and it is as follows specifically to control step:
S1, collection engine water temperature signal;
S2, according to engine water temperature calculated signals engine water temperature T and judge T and preset range in the size of minimum temperature Tmin and Tmax; When ECU judges Tmin≤T≤Tmax, return step S1; If during T＜Tmin, execution in step S3; When T＞Tmax, execution in step S4;
S3, the described pulse width modulating signal dutycycle of increase are in the preset range engine water temperature;
S4, reduce described pulse width modulating signal dutycycle, engine water temperature is in the preset range.
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| CN201310344053.0A CN103375422B (en) | 2013-08-08 | 2013-08-08 | The control system of hydraulic fan, method and engine-cooling system |
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| CN201310344053.0A CN103375422B (en) | 2013-08-08 | 2013-08-08 | The control system of hydraulic fan, method and engine-cooling system |
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| CN103375422B CN103375422B (en) | 2016-04-06 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112032084A (en) * | 2019-11-25 | 2020-12-04 | 章丽 | Anti-return fan for computer |
| CN112042110A (en) * | 2018-04-05 | 2020-12-04 | 法雷奥热系统公司 | Motor-fan unit of a motor vehicle comprising a circuit board for controlling an electric motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112042110A (en) * | 2018-04-05 | 2020-12-04 | 法雷奥热系统公司 | Motor-fan unit of a motor vehicle comprising a circuit board for controlling an electric motor |
| CN112032084A (en) * | 2019-11-25 | 2020-12-04 | 章丽 | Anti-return fan for computer |
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| CN103375422B (en) | 2016-04-06 |
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