CN207673424U - Diesel altitude-variable cooling system with variable water flow - Google Patents
Diesel altitude-variable cooling system with variable water flow Download PDFInfo
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- CN207673424U CN207673424U CN201721636806.5U CN201721636806U CN207673424U CN 207673424 U CN207673424 U CN 207673424U CN 201721636806 U CN201721636806 U CN 201721636806U CN 207673424 U CN207673424 U CN 207673424U
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- cooling
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- temperature
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Abstract
A kind of diesel altitude-variable cooling system with variable water flow, including become height above sea level and become coolant rate system, become height above sea level change cooling air delivery system and control system；It includes variable flow cooling water pump, temperature thermostat, radiator that the change height above sea level, which becomes coolant rate system,；The cooling fan for becoming height above sea level change cooling air delivery system is connect with hydraulic control device；The control system includes ECU control units, exported the temperature sensor of the coolant outlet road between temperature thermostat mounted on diesel engine, the flow sensor of the coolant outlet road between temperature thermostat is exported mounted on the temperature sensor of the coolant pipe road of radiator outlet, mounted on diesel engine and is separately mounted to two coolant rate sensors in two exits of temperature thermostat.The system may be implemented in 0~5500m altitude ranges, the real-time optimistic control of diesel engine cooling intensity.
Description
Technical field
The utility model is related to Diesel Engine Technique Fields, more particularly to a kind of diesel altitude-variable variable flow cooling system
System.
Background technology
The chain drives such as vehicle, engineering machinery are when plateau is run, due to heat dissipation performance variation and diesel oil machine-heating load
Increase etc. lead to problems such as diesel engine occur cooling water easily boils, cooling system cooling capacity declines, body easily overheats, and will most
Diesel engine is caused to there is different degrees of decline in highlands continuous operation ability and operation intensity eventually.These problems can be with
It is attributed to diesel engine cooling system to be deteriorated with working process of diesel engine matching.
Traditional diesel engine cooling system directly drives part of cooling system (water by crankshaft of diesel engine by V belt translation
Pump, fan).The cooling capacity of this cooling system be according to diesel engine maximum heating load operating condition design, cannot be according to diesel oil
Machine variable working condition cooling radiating requirements are adjusted in real time, this limitation, which results in diesel engine tradition cooling system, can not adapt to different seas
It pulls out, the cooling requirement under operating mode, causes cooling insufficient or low altitude area sub-load undercooling under High aititude, and mechanical cold
But system energy consumption is big, and the power consumption under constant engine operating mode accounts for 5%~12% that engine effectively exports, with fast state
When clutch, larger thermal shock stress is brought to engine.Since paraffin thermostat has the characteristic of response delay and " hysteresis ",
It can not be made and be answered according to the variation of engine water temperature in real-time, accurate noon, there are thermostats not to fully open, cooling wind
Fan but starts to strengthen the case where radiating to radiator, since coolant liquid flows through radiator there is no whole, so cooling fan
Radiating efficiency reduces.The flow for adjusting water circulating pump is the total flow for changing coolant liquid cycle, coolant liquid systemic circulation flow
How much specifically changed with partial circulating flow is influenced by thermostat aperture, and the aperture of paraffin thermostat and coolant temperature it
Between be not one-to-one relationship, paraffin thermostat, which can not achieve, accurately controls the large and small circular flow distribution of coolant liquid.
Currently, being directed to the improvement of diesel engine cooling system mainly around in the single of part of cooling system (such as water pump, fan, thermostat)
Control aspect, but under the particular surroundings of plateau, the optimal control of single part is insufficient for the heat dissipation need of diesel altitude-variable
It asks, therefore carry out integrated control to cooling system to become the necessary means of High Altitude Diesel Engine cooling.
Utility model content
For technological deficiency existing for existing diesel High aititude cooling system, it is high that the utility model provides a kind of diesel engine
Height above sea level cooling system with variable water flow, the system can be according to high altitude environments items such as Different Altitude atmospheric pressure, temperature, coolant liquid boiling points
Part parameter and cooling system thermal parameter and Different Altitude diesel engine Warm status, follow Diesel Engine Coolants total flow, size
Circulation and cooling air delivery carry out Collaborative Control, realize in 0~5500m altitude ranges, diesel engine cooling intensity
Real-time optimistic control.
As above design, the technical solution of the utility model are：A kind of diesel altitude-variable cooling system with variable water flow, including become
Height above sea level becomes coolant rate system, becomes height above sea level change cooling air delivery system and control system；The change height above sea level becomes cooling liquid stream
Amount system includes variable flow cooling water pump, temperature thermostat, radiator；The change height above sea level becomes cooling air delivery system
Cooling fan；The cooling fan is connect with hydraulic control device；The control system includes ECU control units, is mounted on bavin
Oil machine exports the temperature sensor of the coolant outlet road between temperature thermostat, mounted on the cold of radiator outlet
But the temperature sensor on liquid pipeline, the coolant outlet road between diesel engine outlet and temperature thermostat
Flow sensor and two coolant rate sensors for being separately mounted to two exits of temperature thermostat, ECU controls are single
Member is connect with proportional pressure control valve, coolant liquid sensor, flow sensor, variable flow cooling water pump and temperature thermostat, is controlled
The aperture of the aperture of proportional pressure control valve, the rotating speed and temperature thermostat of variable flow cooling water pump.
Above-mentioned hydraulic control device includes the hydraulic circuit being made of hydraulic oil container, hydraulic oil pump and hydraulic motor,
And proportional pressure control valve is bridged on the hydraulic circuit, hydraulic motor is connect with hydraulic fan.
Above-mentioned ECU control units include power module, microcontroller ATmeaga128 microcontrollers, signal acquisition module, defeated
Go out control module and communication interface, the analog input in the signal acquisition module has：Atmosphere pressure signal, environment temperature
Signal, atmospheric density signal, coolant liquid boiling point signal and throttle position signal, digital quantity input have:Engine rotational speed signal, row
Speed signal and malfunction coefficient switching signal are sailed, the output control module object is temperature thermostat, variable flow cooling
Current information can be fed back to Computer display by water pump and proportional pressure control valve, the communication interface.
The utility model has the following advantages and good effect：
The utility model becomes height above sea level and becomes coolant rate system by controlling variable flow cooling pump rotary speed, temperature section temperature
Device aperture controls coolant rate, becomes height above sea level and becomes cooling air delivery system by controlling the ratio in hydraulic-driven cooling fan
Overflow valve opening controls cooling fan rotation speed and changes cooling air delivery.
For the utility model under conditions of becoming height above sea level, variable working condition, the ECU in control system is according to Different Altitude environmental condition
(atmospheric pressure, atmospheric temperature, coolant liquid boiling point) and diesel engine condition (rotating speed, load), inquiry proportional overflow valve opening, section
Warm device aperture and cooling water pump rotating speed MAP are converted to analog signal to actuator, real-time control cooling fan ratio by electric signal
Overflow valve opening, thermostat aperture and cooling water pump rotating speed, in 0m~5500m altitude ranges, realize that diesel engine is cold
But the optimum control of liquid total flow, large and small cycles flow and cooling air delivery.
Description of the drawings
Fig. 1 is the overall design drawing of the utility model；
Fig. 2 is the ECU control unit schematic diagrams of the utility model；
Fig. 3 is the control system flow chart of the utility model.
In figure：1- engines；2- control units (ECU)；3- radiators；4- temperature thermostats；5- hydraulic motors；6- becomes
Flow water pump；7,8- cooling-water temperature transmitters；9,10,11- coolant rate sensors；12- hydraulic oil pumps；13- hydraulic oil
Case；14- oil filters；15- oil coolers；16- proportional pressure control valves；17- power supplys；18- cooling fans；19- temperature thermostat section temperature
Device actuator；20- variable water pump actuators；21- hydraulic fan proportional overflow valve actuators.
Specific implementation mode
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.It should be appreciated that this place
The specific embodiment of description is only used to explain the utility model, is not used to limit the utility model.
As shown in Figure 1:A kind of diesel altitude-variable cooling system with variable water flow becomes coolant rate system by change height above sea level, becomes
Height above sea level becomes cooling air delivery system and control system composition.The change height above sea level becomes coolant rate system by radiator 3, unsteady flow
Cooling water pump 6, the composition of temperature thermostat 4 are measured, the change height above sea level becomes cooling air delivery system by hydraulic oil container 13, hydraulic oil
Pump 12, proportional pressure control valve 16, hydraulic motor 5, cooling fan 18 form, wherein hydraulic oil container, hydraulic oil pump and hydraulic motor group
At hydraulic circuit, and proportional pressure control valve is bridged on the hydraulic circuit, hydraulic motor is connect with hydraulic fan；The control
System processed is made of ECU control units 2, temperature sensor, flow sensor.Variable flow cooling water pump is driven by motor, cooling
Fan is driven by hydraulic system, by ECU control proportional overflows valve opening, pump rotary speed and thermostat aperture.The coolant liquid temperature
Spend the coolant outlet of sensor 7, coolant rate sensor 11 between diesel engine outlet and temperature thermostat
On the road, coolant rate sensor 9,10 is separately mounted to two exits of thermostat, and the cooling-water temperature transmitter 8 is pacified
Mounted in the coolant pipe road of radiator outlet；The electronic control unit ECU includes power module, microcontroller
ATmeaga128 microcontrollers, signal acquisition module, output control module and communication interface, the analog quantity in signal acquisition module
Input has：The input signals such as atmosphere pressure signal, ambient temperature signal, atmospheric density signal, coolant liquid boiling point signal, digital quantity
Input has:Diesel engine speed signal, speed of operation signal and malfunction coefficient switching signal etc., the output control of ECU control units
Object is thermostat 4, variable water pump 6 and proportional pressure control valve 16；Current information can be fed back to computer by its communication interface
Display.
The utility model realization principle is as follows：
The system is by high altitude environments conditional parameter and cooling systems such as Different Altitude atmospheric pressure, temperature, coolant liquid boiling points
System thermal parameter and Different Altitude diesel engine Warm status are converted into digital signal and are transmitted to ECU, and ECU is according to input signal, inquiry
Proportional overflow valve opening, thermostat aperture and cooling water pump rotating speed MAP are converted to analog signal to actuator, in fact by electric signal
Time control cooling fan proportional overflow valve opening, thermostat aperture and cooling water pump rotating speed.The system is a kind of dynamic random
Observing and controlling reponse system can be output to according to current water temperature and target water temperature by adjusting the duty ratio of PWM in driving circuit, change
The average voltage of direct current generator, to complete to Diesel Engine Coolants total flow and large and small cycles assignment of traffic and cooling air stream
Amount carries out Collaborative Control.Using the control mode, cooling system energy consumption can be saved to the maximum extent, improve radiating efficiency, 0~
In 5500m altitude ranges, the real-time optimistic control of diesel engine cooling intensity is realized.
The control process of the utility model includes the following steps：
1) after engine start, ECU reads current environment pressure, temperature and diesel engine speed, load and passes through mark first
Determine MAP and obtains thermostat aperture and cooling water pump rotating speed under current state；
2) ECU reads current cooling water temperature, if water temperature is less than minimum desired value (Tmin), ECU calculates measured value and target
Deviation between value reads thermostat aperture and cooling water pump rotating speed MAP, adjusts the duty ratio of PWM in driving circuit, and control is held
Row device, by the Collaborative Control to thermostat aperture and cooling water pump rotating speed, reasonable distribution cooling water total flow and large and small cycle
Flow makes cooling water temperature rising reach desired value, realizes the collaborative feedback control for becoming height above sea level cooling system with variable water flow；If water temperature
Higher than minimum desired value and it is less than highest goal value (Tmax), thermostat aperture and cooling water pump rotating speed remain unchanged；If water temperature is high
In highest goal value, ECU calculates the deviation between measured value and desired value, reads thermostat aperture and cooling water pump rotating speed MAP,
Collaborative Control thermostat aperture and cooling water pump rotating speed, make cooling water temperature reach desired value；If water temperature is higher than highest goal value,
And cooling water temperature cannot be made to be reduced to highest goal value hereinafter, ECU is inquired by the Collaborative Control of thermostat and cooling water pump
Proportional overflow valve opening MAP realizes thermostat, cooling water pump, cooling wind by the control of actuator comparative example overflow valve opening
The Collaborative Control of fan.
Claims (3)
1. a kind of diesel altitude-variable cooling system with variable water flow, including become height above sea level and become coolant rate system, become height above sea level change cooling
Air mass flow system and control system；It includes variable flow cooling water pump, temperature section that the change height above sea level, which becomes coolant rate system,
Warm device, radiator；It includes cooling fan that the change height above sea level, which becomes cooling air delivery system,；It is characterized in that：The cooling fan
It is connect with hydraulic control device；The control system includes ECU control units, is mounted on engine export and temperature thermostat
Between the cooling-water temperature transmitter of coolant outlet road, the cooling mounted on the coolant pipe road of radiator outlet
Liquid temperature sensor, coolant outlet road between engine export and temperature thermostat coolant rate
Sensor and two coolant rate sensors for being separately mounted to two exits of temperature thermostat, ECU control units with
Proportional pressure control valve, coolant liquid sensor, coolant rate sensor, variable flow cooling water pump are connected with temperature thermostat, control
The aperture of the aperture of proportional pressure control valve processed, the rotating speed and temperature thermostat of variable flow cooling water pump, in 0m~5500m height above sea level models
In enclosing, realize Diesel Engine Coolants total flow, large and small cycles flow and cooling air delivery real-time optimistic control.
2. diesel altitude-variable cooling system with variable water flow according to claim 1, it is characterised in that：Above-mentioned hydraulic control dress
The hydraulic circuit including being made of hydraulic oil container, hydraulic oil pump and hydraulic motor is set, and is bridged on the hydraulic circuit
Proportional pressure control valve, hydraulic motor are connect with hydraulic fan.
3. diesel altitude-variable cooling system with variable water flow according to claim 1, it is characterised in that：Above-mentioned ECU controls are single
Member includes that power module, microcontroller ATmeaga128 microcontrollers, signal acquisition module, output control module and communication connect
Mouthful, the analog input in the signal acquisition module has：It is atmosphere pressure signal, ambient temperature signal, atmospheric density signal, cold
But liquid boiling point signal and throttle position signal, digital quantity input have:Engine rotational speed signal, speed of operation signal and failure are aobvious
Show that switching signal, the output control module object are temperature thermostat, variable flow cooling water pump and proportional pressure control valve, institute
Computer display can be fed back to by current information by stating communication interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721636806.5U CN207673424U (en) | 2017-11-30 | 2017-11-30 | Diesel altitude-variable cooling system with variable water flow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721636806.5U CN207673424U (en) | 2017-11-30 | 2017-11-30 | Diesel altitude-variable cooling system with variable water flow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207673424U true CN207673424U (en) | 2018-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721636806.5U Expired - Fee Related CN207673424U (en) | 2017-11-30 | 2017-11-30 | Diesel altitude-variable cooling system with variable water flow |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109828525A (en) * | 2019-03-26 | 2019-05-31 | 中国人民解放军陆军军事交通学院镇江校区 | Certain ship host-initiated control system under superelevation altitude conditions |
| WO2019105079A1 (en) * | 2017-11-30 | 2019-06-06 | 中国人民解放军陆军军事交通学院 | Diesel engine variable-altitude variable-flow cooling system and control process therefor |
| CN110159410A (en) * | 2019-05-30 | 2019-08-23 | 上海理工大学 | Automobile engine control system for heat management |
| CN111894751A (en) * | 2020-07-31 | 2020-11-06 | 湛江德利车辆部件有限公司 | Method for setting atmospheric pressure of electronic fuel injection motorcycle ECU |
| CN114635782A (en) * | 2022-03-28 | 2022-06-17 | 东风商用车有限公司 | Troubleshooting method, troubleshooting device, troubleshooting equipment and readable storage medium |
-
2017
- 2017-11-30 CN CN201721636806.5U patent/CN207673424U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019105079A1 (en) * | 2017-11-30 | 2019-06-06 | 中国人民解放军陆军军事交通学院 | Diesel engine variable-altitude variable-flow cooling system and control process therefor |
| CN109854354A (en) * | 2017-11-30 | 2019-06-07 | 中国人民解放军陆军军事交通学院 | Diesel altitude-variable cooling system with variable water flow and its control process |
| CN109828525A (en) * | 2019-03-26 | 2019-05-31 | 中国人民解放军陆军军事交通学院镇江校区 | Certain ship host-initiated control system under superelevation altitude conditions |
| CN109828525B (en) * | 2019-03-26 | 2023-12-08 | 中国人民解放军陆军军事交通学院镇江校区 | Ship host starting control system under ultra-high altitude condition |
| CN110159410A (en) * | 2019-05-30 | 2019-08-23 | 上海理工大学 | Automobile engine control system for heat management |
| CN111894751A (en) * | 2020-07-31 | 2020-11-06 | 湛江德利车辆部件有限公司 | Method for setting atmospheric pressure of electronic fuel injection motorcycle ECU |
| CN114635782A (en) * | 2022-03-28 | 2022-06-17 | 东风商用车有限公司 | Troubleshooting method, troubleshooting device, troubleshooting equipment and readable storage medium |
| CN114635782B (en) * | 2022-03-28 | 2023-02-03 | 东风商用车有限公司 | Troubleshooting method of vehicle cooling system and related equipment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180731 Termination date: 20181130 |
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| CF01 | Termination of patent right due to non-payment of annual fee |