CN103790686A - Load-sensitive automotive cooling fan transmission device - Google Patents
Load-sensitive automotive cooling fan transmission device Download PDFInfo
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- CN103790686A CN103790686A CN201410035924.5A CN201410035924A CN103790686A CN 103790686 A CN103790686 A CN 103790686A CN 201410035924 A CN201410035924 A CN 201410035924A CN 103790686 A CN103790686 A CN 103790686A
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Abstract
The invention belongs to the technical field of automotive cooling fan transmission devices, and particularly relates to a load-sensitive automotive cooling fan transmission device. Compared with the prior art, the load-sensitive automotive cooling fan transmission device with the technical scheme has the advantages that (1) a temperature sensor sends a temperature signal to a controller, the opening degree of a throttling valve is controlled by the controller, then the output flow of a pump is controlled, the rotating speed of a motor can be changed, and finally the aim of automatically adjusting the speed according to temperature parameters is achieved; (2) when the rotating speed of an automotive engine is larger than a set value, the output rotating speed of the motor can reach the largest set value; when the value of the temperature signal of the temperature sensor is larger than the trigger value of the highest set rotating speed of the motor, the output rotating speed of the motor is constantly output with the highest set rotating speed, and overspeed cannot happen; (3) an oil supplying pump is arranged, and the size of an oil tank can be controlled not to be too large; (4) two check valves are arranged, impacts generated when the motor stops rotating can be reduced, and the motor can be prevented from rotating reversely.
Description
Technical field
The invention belongs to vehicle cooling fan transmission device technical field, be specifically related to a kind of the load-sensitive formula vehicle cooling fan transmission device relevant with thermal load, it is mainly used in High-Powered Vehicle.
Background technique
The function of cooling fan transmission device is rotatablely moving of motor to be passed to the fan of cooling system.The transmission of cooling fan generally can be divided into machinery, electric power and three kinds of kinds of drive of liquid, in electric drive, the motor of drive fan is to provide power supply by storage battery, so the power of cooling fan is subject to the restriction of vehicle power supply, electric fan is only applicable to the use on small-sized highway car, the cooling fan of High-Powered Vehicle, adopts the driving of mechanical type or liquid conventionally.Due to hydraulic transmission, to have element installing space little, and mounting arrangements is flexible, and limited space is little, can be installed in the features such as the arbitrary position of vehicle, is widely used in vehicle cooling fan transmission device.
Shaer Inc of the U.S. has applied for the patent of the hydraulic fan transmission system with non-special liquid source, its patent No. is 99801178.9, in this patent, signal emission sensor sends the electronic signal corresponding with thermosensitive part temperature to electronic controller, regulator regulates the hydraulic pressure that leads to fan motor to increase or reduce fan speed by reduction valve, adapts to the definite thermosensitive part temperature requirement of regulator.Meanwhile, similarly electric-hydraulic proportion control hydraulic driving cooling fan also has extensive application on small-sized road vehicle.
The cooling fan transmission device of electric-hydraulic proportion control hydraulic pressure is to control the switching of solenoid valve and then reach the control to rotation speed of the fan with ECU.System is detected the coolant temperature of motor by cooling-water temperature transmitter, and coolant temperature signal is passed to ECU (Electrical Control Unit) ECU, and ECU processes after this signal, sends control signal, and then regulates the input current of type pilot electromagnetism proportional pressure control valve.Because adjustment pressure and the input current of electromagnetic proportion relief valve are proportional, so with the change of input current, can change the spillway discharge of throttle circuit, thereby change the adjustment pressure of relief valve, regulate the inlet and outlet pressure of cooling fan of engine hydraulic driving system and oil hydraulic motor poor, the change of oil pressure will be played to cooling fan and water pump the effect of speed governing.
But for High-Powered Vehicle, especially off highway vehicle, under some special operation condition, while carrying out work as the engine long time with the heavy load slow-speed of revolution, above-mentioned cooling fan transmission device but can not solve the cooling problem of vehicle well.Meanwhile, traditional vehicle cooling fan transmission device can not meet multi-parameter, the multi objective control of modern vehicle thermal management technology, therefore needs a kind of novel automobile cooling fan transmission device badly and solves these problems.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is: how to provide a kind of temperature load sensitive vehicle cooling fan transmission device that can meet modern vehicle thermal management technology demand, to solve the hypodynamic problem of heat radiation energy of being brought by vehicle thermal load and engine speed nonlinear change.
(2) technological scheme
For solving the problems of the technologies described above, this aspect provides a kind of load-sensitive formula vehicle cooling fan transmission device, and described device comprises: pump 1, motor 5, temperature transducer 3, controller 2 and proportional throttle valve 4;
Described pump 1 connects fuel tank 6, between pump 1 and motor 5 filler openings, described proportional throttle valve 4 is set, and described motor 5 oil outlets connect fuel tank 6;
Described temperature transducer 3 via controllers 2 connect described proportional throttle valve 4;
Described temperature transducer 3 is for transmitting temperature signal to controller 2;
Described controller 2 carrys out the aperture of control ratio throttle valve 4 for generating control signal according to temperature signal, change the pressure reduction of proportional throttle valve 4 front and back, and then control pump 1 output flow, the rotating speed of change motor 5, reaches fan according to the object of the temperature parameter automatic speed regulation setting.
Wherein, described controller 2 is set to receive temperature signals more than 2 tunnels.
Wherein, in the time that vehicle motor rotating speed is greater than setting value, described motor 5 is set to its output speed and can reaches the peak of setting.
Wherein, when described temperature transducer 3 temperature signal value higher than set motor 5 maximum speed trigger value time, described motor 5 is set to the maximum speed constant output of its output speed to set, and does not exceed the speed limit.
Wherein, described device also comprises slippage pump 7, and described slippage pump 7 is arranged at before pump 1 filler opening, and the working oil while work for replenishment system is revealed.
Wherein, described device also comprises the first one-way valve 8, and described the first one-way valve 8 is arranged between motor 5 filler openings and oil outlet, the impact when slowing down motor 5 stall.
Wherein, described device also comprises the second one-way valve 9, and described the second one-way valve 9 is arranged between motor 5 oil outlets and slippage pump 7 oil outlets, for avoiding motor 5 antiports.
(3) beneficial effect
Compared with prior art, technical solution of the present invention possesses following beneficial effect:
(1) this scheme sends temperature signal by temperature transducer to controller, by controller control throttle valve opening, so that control pump output flow, change motor rotary speed, finally realize according to the object of temperature parameter automatic speed regulation.
(2) this scheme can be worked as vehicle motor rotating speed while being greater than setting value, and motor output speed can reach the peak of setting; And when temperature transducer temperature signal value higher than set motor maximum speed trigger value time, the maximum speed constant output of motor output speed to set, and does not exceed the speed limit.
(3) this scheme is by arranging slippage pump, and the volume that can control fuel tank is unlikely to excessive.
(4) this scheme is by two one-way valves are set, and the impact can slow down motor stall time is also avoided motor antiport.
Accompanying drawing explanation
Fig. 1 is the structural representation of a specific embodiment in technical solution of the present invention.
Fig. 2 is the structural representation of another preferred embodiment in technical solution of the present invention.
Fig. 3 is the structural representation of a preferred embodiment again in technical solution of the present invention.
Embodiment
For making object of the present invention, content and advantage clearer, below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
For solving the problem of prior art, the invention provides a kind of load-sensitive formula vehicle cooling fan transmission device, as shown in Figure 1, described device comprises: pump 1, motor 5, temperature transducer 3, controller 2 and proportional throttle valve 4;
Described pump 1 connects fuel tank 6, between pump 1 and motor 5 filler openings, described proportional throttle valve 4 is set, and described motor 5 oil outlets connect fuel tank 6;
Described temperature transducer 3 via controllers 2 connect described proportional throttle valve 4;
Described temperature transducer 3 is for transmitting temperature signal to controller 2;
Described controller 2 carrys out the aperture of control ratio throttle valve 4 for generating control signal according to temperature signal, change the pressure reduction of proportional throttle valve 4 front and back, and then control pump 1 output flow, the rotating speed of change motor 5, reaches fan according to the object of the temperature parameter automatic speed regulation setting.
Wherein, described controller 2 is set to receive temperature signals more than 2 tunnels.
Wherein, in the time that vehicle motor rotating speed is greater than setting value, described motor 5 is set to its output speed and can reaches the peak of setting.
Wherein, when described temperature transducer 3 temperature signal value higher than set motor 5 maximum speed trigger value time, described motor 5 is set to the maximum speed constant output of its output speed to set, and does not exceed the speed limit.
Wherein, as shown in Figure 2, described device also comprises slippage pump 7, and described slippage pump 7 is arranged at before pump 1 filler opening, and the working oil while work for replenishment system is revealed.
Wherein, as shown in Figure 3, described device also comprises the first one-way valve 8 and the second one-way valve 9, and described the first one-way valve 8 is arranged between motor 5 filler openings and oil outlet, the impact when slowing down motor 5 stall; Described the second one-way valve 9 is arranged between motor 5 oil outlets and slippage pump 7 oil outlets, for avoiding motor 5 antiports.
The working principle of this device is as follows:
Carry out the aperture of control ratio valve and then reach the control to rotation speed of the fan with controller.Temperature sensor signal is passed to after controller, send control signal, and then the input voltage of adjusting proportional throttle valve, because aperture and the input voltage of proportional throttle valve are proportional, so with the change of input voltage, can change the pressure reduction of proportional throttle valve front and back, control oil hydraulic pump output flow, change the rotating speed of oil hydraulic motor, reach fan according to the object of the temperature parameter automatic speed regulation setting.
One timing of main pump input speed, its output flow can change with external control signal, in the time that input voltage reduces, show that loading demand flow reduces, the flow of now pump output is greater than the desired flow of load, the built-in load-sensitive valve of Proportional valve driving pump reduces pump variable swash plate pivot angle, and pump duty reduces, until reach the required flow of load.Otherwise the swash plate pivot angle of pump increases, pump duty increases.
When main pump input speed increases, and load is constant, and proportional throttle valve aperture is constant, and pump displacement can reduce automatically, thereby keeps POF constant.
In the time of load pressurize, the flow of pump can be reduced to the pressure that only can maintain system, and swash plate pivot angle approaches zero drift angle, the power consumption minimum of pump.When proportional throttle valve is closed, i.e. load quits work, and pump discharge pressure only needs to maintain its control spool pressure is set, and flow approaches zero.
Describe in detail below in conjunction with specific embodiment.
Embodiment 1
As shown in Figure 1, cooling fan hydraulic transmission adopts open system to the present embodiment, and pump 1 is directly from fuel tank 6 oil suctions, and fluid is through proportional throttle valve 4 supply motors 5, motor 5 output speeds.The flow output of passing ratio throttle valve 4 and controller 2 control pumps 1, thus make cooling fan realize as required stepless change.Its working principle is: temperature signal is passed to controller 2 by temperature transducer 3, here controller 2 can receive temperature signals more than 2 tunnels, and controller 2 is processed after these signals, sends control signal, and then the input voltage of adjusting proportional throttle valve 4, this voltage is relevant with thermal load.Because aperture and the input voltage of proportional throttle valve 4 are proportional, so with the change of input voltage, can change the pressure reduction of proportional throttle valve 4 front and back.The built-in load-sensitive spool of pump 1 left end the stressed outlet pressure (being also the inlet pressure of proportional throttle valve 4) for pump 1, right-hand member institute is stressed is proportional throttle valve 4 outlet pressures and default spring force.If P
sfor pump 1 outlet pressure, P
lfor the pressure of thermal load needs.Pump 1 input speed one timing, its output flow can change with external control signal.In the time that input voltage reduces, proportional throttle valve 4 apertures reduce, and show that loading demand flow reduces, and the flow that now pump 1 is exported is greater than the desired flow of load, proportional throttle valve 4 inlet outlet pressure differential P=P
s-P
lincrease, the built-in load-sensitive spool of driving pump 1 moves right, and the flow of pump 1 is reduced, and motor 5 output speeds reduce thereupon, until reach the required cooling fan rotation speed of load.Otherwise the aperture of proportional throttle valve 4 increases, POF is less than the desired flow of load, P=P
s-P
lreduce, the built-in load-sensitive spool of pump 1 moves left, and the flow of pump 1 is increased, and motor 5 output speeds increase thereupon, until reach the required cooling fan rotation speed of load.In the time that pump 1 input speed continues to increase, in proportional throttle valve 4 apertures constant in the situation that, its inlet outlet pressure differential P=P
s-P
lcan increase, pump 1 discharge capacity can reduce automatically, thereby keeps POF constant.Above working procedure makes the output speed of motor 5 no longer directly be limited to the input speed of pump 1, pump 1 can reach the maximum speed of setting at certain input speed scope inner motor 5, reach cooling fan according to the temperature parameter automatic speed regulation setting, and the object that can not exceed the speed limit.In the time of load pressurize, P
s=P
l, the built-in load-sensitive valve of pump 1 cannot be opened, and pump 1 flow is reduced to the pressure that only can maintain system, the power consumption minimum of pump.Close when proportional throttle valve 4, i.e. load quits work, and pump 1 outlet pressure only arranges pressure for its built-in load-sensitive valve spring, and flow approaches zero, reaches energy-conservation object.
The present embodiment as shown in Figure 2, is the mode of execution after the another kind of optimization of the present invention.Consider and adopt traditional open system to bring the problem of fuel tank 6 bulky, adopt traditional closed system cannot realize above-mentioned control mode, so in this optimization mode of execution, before pump 1 filler opening, increase slippage pump 7 to pump 1 repairing for open system, working oil for replenishment system work is revealed, can meet like this design objective and the designing requirement of system, fuel tank 6 volumes are also much smaller than traditional open system.
The present embodiment as shown in Figure 3, is the mode of execution after another kind of the present invention is further optimized.Optimize mode of execution with respect to shown in Fig. 2, between motor 5 filler openings and oil outlet, increase the first one-way valve 8, the impact while slowing down motor 5 stall.Between motor 5 oil outlets and slippage pump 7 oil outlets, increase by the second one-way valve 9, avoid motor 5 antiports.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the technology of the present invention principle; can also make some improvement and distortion, these improvement and distortion also should be considered as protection scope of the present invention.
Claims (7)
1. a load-sensitive formula vehicle cooling fan transmission device, is characterized in that, described device comprises: pump (1), motor (5), temperature transducer (3), controller (2) and proportional throttle valve (4);
Described pump (1) connects fuel tank (6), between pump (1) and motor (5) filler opening, described proportional throttle valve (4) is set, and described motor (5) oil outlet connects fuel tank (6);
Described temperature transducer (3) via controller (2) connects described proportional throttle valve (4);
Described temperature transducer (3) is for transmitting temperature signal to controller (2);
Described controller (2) carrys out the aperture of control ratio throttle valve (4) for generating control signal according to temperature signal, change the pressure reduction of proportional throttle valve (4) front and back, and then control pump (1) output flow, change the rotating speed of motor (5), reach fan according to the object of the temperature parameter automatic speed regulation setting.
2. load-sensitive formula vehicle cooling fan transmission device as claimed in claim 1, is characterized in that, described controller (2) is set to receive temperature signals more than 2 tunnels.
3. load-sensitive formula vehicle cooling fan transmission device as claimed in claim 1, is characterized in that, in the time that vehicle motor rotating speed is greater than setting value, described motor (5) is set to its output speed and can reaches the peak of setting.
4. load-sensitive formula vehicle cooling fan transmission device as claimed in claim 1, it is characterized in that, when described temperature transducer (3) temperature signal value higher than set motor (5) maximum speed trigger value time, described motor (5) is set to the maximum speed constant output of its output speed to set, and does not exceed the speed limit.
5. load-sensitive formula vehicle cooling fan transmission device as claimed in claim 1, is characterized in that, described device also comprises slippage pump (7), and described slippage pump (7) is arranged at before pump (1) filler opening, and the working oil while work for replenishment system is revealed.
6. load-sensitive formula vehicle cooling fan transmission device as claimed in claim 1, it is characterized in that, described device also comprises the first one-way valve (8), and described the first one-way valve (8) is arranged between motor (5) filler opening and oil outlet, the impact when slowing down motor (5) stall.
7. load-sensitive formula vehicle cooling fan transmission device as claimed in claim 5, it is characterized in that, described device also comprises the second one-way valve (9), described the second one-way valve (9) is arranged between motor (5) oil outlet and slippage pump (7) oil outlet, for avoiding motor (5) antiport.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035924.5A CN103790686A (en) | 2014-01-25 | 2014-01-25 | Load-sensitive automotive cooling fan transmission device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410035924.5A CN103790686A (en) | 2014-01-25 | 2014-01-25 | Load-sensitive automotive cooling fan transmission device |
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| CN103790686A true CN103790686A (en) | 2014-05-14 |
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| CN201410035924.5A Pending CN103790686A (en) | 2014-01-25 | 2014-01-25 | Load-sensitive automotive cooling fan transmission device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156342A (en) * | 2015-09-22 | 2015-12-16 | 力源液压系统（贵阳）有限公司 | Automatic temperature control vehicle-mounted hydraulic driven fan system and control method adopting same |
| CN116696874A (en) * | 2023-08-04 | 2023-09-05 | 华侨大学 | Variable-rotating-speed differential pressure regulation load sensitive system and engineering machinery thereof |
Citations (7)
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|---|---|---|---|---|
| US3659567A (en) * | 1969-07-15 | 1972-05-02 | Rolls Royce | Drive means for the cooling fan of an internal combustion engine |
| JPS62142819A (en) * | 1985-12-17 | 1987-06-26 | Nippon Denso Co Ltd | Cooling system for vehicle |
| DE3617262A1 (en) * | 1986-05-22 | 1987-11-26 | Fendt & Co Xaver | Hydrostatic drive |
| DE4238998A1 (en) * | 1992-11-19 | 1994-05-26 | Bosch Gmbh Robert | Hydrostatic drive for car auxiliaries - has parallel hydromotor circuits for fan and generator with electronic control of pressurised fluid supply from pump |
| CN1891995A (en) * | 2005-07-06 | 2007-01-10 | 神钢建设机械株式会社 | Controlling system for cooling fan |
| CN101506484A (en) * | 2006-08-24 | 2009-08-12 | 株式会社小松制作所 | Fan drive system |
| CN101978145A (en) * | 2008-03-25 | 2011-02-16 | 株式会社小松制作所 | Fan drive controlling device and construction machine |
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2014
- 2014-01-25 CN CN201410035924.5A patent/CN103790686A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3659567A (en) * | 1969-07-15 | 1972-05-02 | Rolls Royce | Drive means for the cooling fan of an internal combustion engine |
| JPS62142819A (en) * | 1985-12-17 | 1987-06-26 | Nippon Denso Co Ltd | Cooling system for vehicle |
| DE3617262A1 (en) * | 1986-05-22 | 1987-11-26 | Fendt & Co Xaver | Hydrostatic drive |
| DE4238998A1 (en) * | 1992-11-19 | 1994-05-26 | Bosch Gmbh Robert | Hydrostatic drive for car auxiliaries - has parallel hydromotor circuits for fan and generator with electronic control of pressurised fluid supply from pump |
| CN1891995A (en) * | 2005-07-06 | 2007-01-10 | 神钢建设机械株式会社 | Controlling system for cooling fan |
| CN101506484A (en) * | 2006-08-24 | 2009-08-12 | 株式会社小松制作所 | Fan drive system |
| CN101978145A (en) * | 2008-03-25 | 2011-02-16 | 株式会社小松制作所 | Fan drive controlling device and construction machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105156342A (en) * | 2015-09-22 | 2015-12-16 | 力源液压系统（贵阳）有限公司 | Automatic temperature control vehicle-mounted hydraulic driven fan system and control method adopting same |
| CN116696874A (en) * | 2023-08-04 | 2023-09-05 | 华侨大学 | Variable-rotating-speed differential pressure regulation load sensitive system and engineering machinery thereof |
| CN116696874B (en) * | 2023-08-04 | 2023-12-12 | 华侨大学 | Variable-rotating-speed differential pressure regulation load sensitive system and engineering machinery thereof |
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Application publication date: 20140514 |