CN102493521A - Energy-saving control method for cooling system of excavator - Google Patents
Energy-saving control method for cooling system of excavator Download PDFInfo
- Publication number
- CN102493521A CN102493521A CN2011103924243A CN201110392424A CN102493521A CN 102493521 A CN102493521 A CN 102493521A CN 2011103924243 A CN2011103924243 A CN 2011103924243A CN 201110392424 A CN201110392424 A CN 201110392424A CN 102493521 A CN102493521 A CN 102493521A
- Authority
- CN
- China
- Prior art keywords
- power
- main pump
- pump
- motor
- master controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 20
- 239000000498 cooling water Substances 0.000 claims abstract description 11
- 230000005855 radiation Effects 0.000 claims description 43
- 239000002826 coolant Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000011217 control strategy Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 7
- 230000003044 adaptive effect Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 239000010729 system oil Substances 0.000 description 1
Images
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
The invention discloses an energy-saving control method for a cooling system of an excavator and belongs to the technical field of energy saving control of cooling systems of engineering machinery. The method comprises the following concrete steps that: a master controller sets a target rotation speed and power of a hydraulic main pump based on a power mode and an accelerator knob input signal; conditional judgment is carried out on cooling water temperature, air inlet temperature and hydraulic oil temperature signals of an engine, a PWM (pulse-width modulation) signal is output, and the power of an independent cooling pump is adjusted; load vibration of the excavator under different work conditions is judged according to the power required by the cooling pump, a PWM signal is output to adjust the power of the hydraulic main pump under the rotation speed sensing control of an ESS (engine speed sensor) through two-dimensional fuzzy PID (proportion-integral-differential) adjustment, so that the output power of the engine is matched with the power of the hydraulic main pump and the power of the cooling pump. The energy-saving control method disclosed by the invention has the beneficial effects that optimal matching between the output power of the engine of the excavator and the power of the hydraulic main pump and the power of the cooling pump can be realized, adaptive control can be realized, and the stationarity and working efficiency of system operation can be improved, while the oil consumption and noises are effectively lowered.
Description
Technical field
The present invention relates to a kind of energy-saving control method of engineering machinery field cooling system, specifically is a kind of energy-saving control method of excavator cooling system, belongs to the energy-conserving control technology field of engineering machinery cooling system.
Background technology
Present domestic shovel crawler cooling system comprises cooling water cooling system and hydraulic oil cooling system two parts; Usually all adopting motor directly to drive radiator fan dispels the heat; And the rotating speed of radiator fan, power, driving moment are directly related with the rotating speed size of motor; The installation site also is restricted, thereby heat-sinking capability makes subject matters such as the complete machine operating temperature is too high, oil consumption is high, vibration is big, noise height inadequately when causing the operation of low speed heavy load.
In the existing domestic excavator power adaptive energy-conserving control technology, domestic construction machinery product is excavator particularly, the independent fully heat radiation of the rare employing of its cooling system.Consider the different operation operating mode of excavator, under hot environment, need maximum heat-sinking capability during excavator operation, heat radiation power is bigger; And operation only needs the smaller power heat radiation under low temperature environment, does not even need heat radiation, and the heat radiation pump power of this moment needs less.Therefore; To disposing the excavator of independent cooling system; Except that considering that the complete machine engine output satisfies the power of hydraulic system normal operation needs, according under various environment temperature condition of different, the difference of independent cooling system watt level different needs, operation load changes, the power output of adjusting motor is constantly mated with hydraulic pressure main pump power and independent heat radiation pump power; Make it reach best, thereby improve excavator operation efficient and performance greatly, heat dispersion is best; Reduce complete machine oil consumption, noise and vibration, optimize the various performance indications of complete machine.To the domestic still space state of the power adaptive energy-conserving control technology of excavator independence cooling system; So; The power adaptive energy-saving control method of a kind of excavator independence of demand cooling system to hydraulic pressure main pump and engine power coupling energy-conserving control technology, makes the energy-saving effect of excavator and operating efficiency reach best in conjunction with electronic control system; Intelligent degree is high, satisfies market demand.
Summary of the invention
Problem to above-mentioned prior art existence; The present invention provides a kind of energy-saving control method of excavator cooling system; When effectively reducing oil consumption, make the engine output of excavator and the power match of main pump power and independent heat radiation pump reach best, realize Self Adaptive Control; Reduce oil consumption and noise, the stationarity of raising system operation and the purpose of operating efficiency.
To achieve these goals, the present invention realizes through following technical scheme: a kind of energy-saving control method of excavator cooling system, and it is following that it specifically controls step:
(1), behind the engine start, select power mode, master controller reads in this signal through the CAN bus, sets the maximum speed value of setting when motor is unloaded under each power mode through the multifunction electronic watch-dog;
(2), the operation grip, set the rotating speed target operating position of motor, master controller input port 1 collects this input signal;
(3), through computing, master controller through and the Engine ECU controller between the CAN EBI, according to the J1939 communications protocol, send the corresponding accelerator open degree percentages of grip, thus the rotating speed of control motor;
(4), master controller is through output port 2; The minimum unloaded idling of corresponding grip is to the highest unloaded idle position; Set pulse-width modulation PWM signal with the non-linear corresponding dutycycle from the minimum current value to the lowest high-current value of tach signal; Promptly preestablish main pump one and main pump two current values, the swash plate angle of adjustment main pump one and main pump two, the discharge capacity of change main pump one and main pump two;
(5), the output port 1 through master controller, the pulse-width modulation PWM signal code value of output duty cycle is 0mA, the swash plate angle of adjustment heat radiation pump makes its discharge capacity and heat radiation power maximum;
(6), master controller reads in coolant water temperature T1, the intake air temperature T2 of motor through the CAN bus, reads in hydraulic oil temperature T3 through the input port;
(7), carrying out logic judges:
Set; The minimum value of the coolant water temperature that T1min and T1max control when being respectively the motor operate as normal and maximum value; The minimum value of the intake air temperature that T2min and T2max control when being respectively the motor operate as normal and maximum value, the minimum value of the hydraulic oil temperature that T3min and T3max control when being respectively the motor operate as normal and maximum value;
When T1＞T1max or T2＞T2max or T3＞T3max, the maintenance output current value is 0mA, and the swash plate angle of adjustment heat radiation pump makes its discharge capacity maximum, the pump that promptly dispels the heat (power reach maximum;
When T1＜T1min and T2＜T2min and T3＜T3min, output current value is a maximum current, and adjustment heat radiation pump swash plate angle makes its discharge capacity minimum, and the power of the pump that promptly dispels the heat is minimum;
When T1min＜T1＜T1max and T2min＜T2＜T2max and T3min＜T3＜T3max; The power of master controller output current value adjustment heat radiation pump; Must satisfy priority principle according to heat radiation power weighs---and the cooling water cooling system power of motor has precedence over hydraulic oil temperature cooling system power, promptly satisfies normal working temperature priority principle T1＞T2＞T3; Each temperature of T1, T2 and T3 is divided into three kinds of temperature sections, carries out the linearity adjustment with three kinds of slope K 1, K2 and K3, promptly output current value carries out the linearity adjustment to the discharge capacity of heat radiation pump (5);
(8), relatively what judge the power N of the pump actual needs that promptly dispels the heat to master controller according to heat radiation power required under the various radiating conditions
0The dump power N that compares with the peak power Nmax of heat radiation pump
1=Nmax-N
0
(9) work as N
0During＜Nmax, with dump power N
1, convert through condition, take control strategy, on the power basis of main pump that is provided with in advance one and main pump two, suitably increase the electric current preset value of hydraulic pressure main pump one, two electric proportional valves;
(10), main pump two pressure sensors, main pump one pressure sensor, the swing arm that read in through input port 3, input port 4, input port 5, input port 6, input port 7 of master controller plays pressure sensor, dipper and receives the signal that pressure sensor and scraper bowl are received pressure sensor; And the actual speed and the rate of load condensate signal of the motor that reads in through the CAN bus; Load variations when judging excavator operation, the target setting rotating speed and the actual speed of comparison engine;
(11), carry out two-dimentional fuzzy and regulate, realize that ESS control is revolution speed sensing control; Follow the tracks of the excavator operation load variations; The current value of hydraulic pressure main pump one, two electric proportional valves of the final output of adjustment; Thereby adjust the swash plate angle and the output displacement size of main pump one and main pump two in real time, thereby increase the absorbed power of main pump one and main pump two;
(12), work as N
0During=Nmax; Main pump two pressure sensors that master controller reads in through input port 3, input port 4, input port 5, input port 6 and input port 7, main pump one pressure sensor, swing arm play the signal that pressure sensor, dipper receipts pressure sensor and scraper bowl are received pressure sensor; And the actual speed and the rate of load condensate signal of the motor that reads in through the CAN bus; Load conversion when judging excavator operation once more, the target setting rotating speed and the actual speed of comparison engine;
(13), carry out two-dimentional fuzzy adjusting, ESS control and revolution speed sensing control once more; Master controller output remains on the pulse-width modulation PWM signal that preestablishes the dutycycle corresponding with tach signal; It is the current value of hydraulic pressure main pump one, two electric proportional valves; Promptly keep the main pump setting power constant, the power output of adjustment main pump one and main pump two;
(14), finally control the assignment of traffic of each pump, utilize the power of motor, make the pump power summation that is assigned to main pump one, main pump two and heat radiation pump be no more than the power output of motor through master controller.
The invention has the beneficial effects as follows: when effectively reducing oil consumption and noise, make the engine output of excavator and main pump power reach best, realize Self Adaptive Control, improved the stationarity and the operating efficiency of system's operation with independent heat radiation pump power coupling.
Description of drawings
Fig. 1 is a control method flow chart of the present invention;
Fig. 2 is a control system architecture sketch map of the present invention;
Fig. 3 is an Energy Saving Control method of adjustment sketch map of the present invention;
Fig. 4 is an independent radiating control method of adjustment sketch map of the present invention.
Among the figure: 1, cooling water heat radiation motor, 2, hydraulic oil heat radiation motor, 3, hydraulic pressure main pump one, two electric proportional valves, 4, heat radiation pump electric proportional valve, 5, the heat radiation pump; 6, main pump one, 7, main pump two, 9, motor, 10, motor EUC controller, 11, the multifunction electronic watch-dog; 12, hydraulic oil temperature sensor, 13, main pump one pressure sensor, 14, main pump two pressure sensors, 15, grip; 16, master controller, 17, swing arm plays pressure sensor, 18, dipper receives pressure sensor, 19, scraper bowl receives pressure sensor; 20, hydraulic oil radiator, 21, the hydraulic oil fan that looses, 22, cooling water radiator, 23, the cooling water fan that looses.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is further specified.
Like Fig. 1, Fig. 2 and shown in Figure 3; A kind of energy-saving control method of excavator cooling system, at first, after motor 9 starts; Select power mode (H heavy duty pattern, S mode standard, L underloading pattern) through multifunction electronic watch-dog 11, master controller 16 reads in this signal through the CAN bus; Set the maximum speed value that motor under each power mode 9 is set when unloaded; Operation grip 15, the rotary speed working position of setting motor 9, master controller 16 input ports 1 collect this input signal; Through computing, master controller 16 through and Engine ECU controller 10 between the CAN EBI, according to the J1939 communications protocol, send the corresponding accelerator open degree percentages of grip 15, thus the rotating speed of control motor 9; Master controller 16 is through output port 2 simultaneously; The minimum unloaded idling of corresponding grip 15 is to the highest unloaded idle position; Set pulse-width modulation PWM signal with the non-linear corresponding dutycycle from the minimum current value to the lowest high-current value of tach signal; Promptly preestablish main pump 1 and main pump 27 current values, the swash plate angle of adjustment main pump 1 and main pump 27, the discharge capacity of change main pump 1 and main pump 27; Through the output port 1 of master controller 16, the pulse-width modulation PWM signal code value of output duty cycle is 0mA, and the swash plate angle of adjustment heat radiation pump 5 makes its discharge capacity reach maximum, and the power of the pump 5 that promptly dispels the heat is maximum, has the safeguard protection effect; Drive each pump work through motor 9; Main pump 1 is realized the various operation functions of hydraulic system with main pump 27 through each oil circuit; The pump 5 that dispels the heat drives the diffusing fan 23 of cooling water, the diffusing fan 21 of hydraulic oil respectively through oil circuit driving cooling water heat radiation motor 1 and hydraulic oil heat radiation motor 2; Realize the heat sinking function of hydraulic oil radiator 20 and cooling water radiator 22, thereby realize independent heat radiation.
Then, excavator begins operation, and master controller 16 reads in coolant water temperature T1, the intake air temperature T2 of motor 9 through the CAN bus, reads in hydraulic oil temperature T3 through input port 2, and hydraulic oil temperature T3 gathers through hydraulic oil temperature sensor 12; Carrying out logic judges:
As shown in Figure 4; Set; The minimum value and the maximum value of the coolant water temperature that T1min and T1max control when being respectively motor 9 operate as normal; The minimum value and the maximum value of the intake air temperature that T2min and T2max control when being respectively motor 9 operate as normal, the minimum value and the maximum value of the hydraulic oil temperature that T3min and T3max control when being respectively motor 9 operate as normal;
When T1＞T1max or T2＞T2max or T3＞T3max, the maintenance output current value is 0mA, and the swash plate angle of adjustment heat radiation pump 5 makes its discharge capacity maximum, and it is maximum that the power of the pump 5 that promptly dispels the heat reaches;
When T1＜T1min and T2＜T2min and T3＜T3min, output current value is a maximum current, and adjustment heat radiation pump 5 swash plate angles make its discharge capacity minimum, and the power of the pump 5 that promptly dispels the heat is minimum;
When T1min＜T1＜T1max and T2min＜T2＜T2max and T3min＜T3＜T3max; The power of master controller 16 output current values adjustment heat radiation pump 5; Must satisfy priority principle according to heat radiation power weighs---and the cooling water cooling system power of motor 9 has precedence over hydraulic oil temperature cooling system power, promptly satisfies normal working temperature priority principle T1＞T2＞T3.
Each temperature of T1, T2 and T3 is divided into three kinds of temperature sections, carries out the linearity adjustment, realize that promptly output current value carries out the linearity adjustment to the discharge capacity of heat radiation pump 5 with three kinds of slope K 1, K2 and K3.
At last, on the basis of above step, relatively what judge the power N of pump 5 actual needs that promptly dispel the heat to master controller 16 according to heat radiation power required under the various radiating conditions
0The dump power N that compares with the peak power Nmax of heat radiation pump 5
1=Nmax-N
0, on the power basis of main pump that is provided with in advance 1 and main pump 27, adjust the watt level of main pump 1 and main pump 27: promptly work as N then
0During＜Nmax, will remain with power N
1, convert through condition, take control strategy, suitably increase the electric current preset value of hydraulic pressure main pump one, two electric proportional valves 3; Simultaneously the main pump that reads in through input port 3, input port 4, input port 5, input port 6, input port 7 of master controller 16 two pressure sensors 14, main pump one pressure sensor 13, swing arm play pressure sensor 17, dipper and receive the signal that pressure sensor 18 and scraper bowl are received pressure sensor 19; And the actual speed and the rate of load condensate signal of the motor 9 that reads in through the CAN bus; Load variations when judging excavator operation, the target setting rotating speed and the actual speed of comparison engine 9; Carry out two-dimentional fuzzy adjusting, ESS control and revolution speed sensing control; Follow the tracks of the excavator operation load variations; Adjustment in real time is the current value of hydraulic pressure main pump one, two electric proportional valves 3 of output finally, adjusts the swash plate angle of main pump 1 and main pump 27, adjusts the output displacement size of main pump 1 and main pump 27 then; Thereby increase the power of main pump 1 and main pump 27, improve the complete machine operating efficiency;
Work as N
0During=Nmax; Main pump that master controller 16 reads in through input port 3, input port 4, input port 5, input port 6 and input port 7 two pressure sensors 14, main pump one pressure sensor 13, swing arm play pressure sensor 17, dipper and receive the signal that pressure sensor 18 and scraper bowl are received pressure sensor 19; And the actual speed and the rate of load condensate signal of the motor 9 that reads in through the CAN bus; Load conversion when judging excavator operation once more, the target setting rotating speed and the actual speed of comparison engine 9; Carry out two-dimentional fuzzy adjusting, ESS control and revolution speed sensing control again; Master controller 16 outputs remain on the pulse-width modulation PWM signal that preestablishes the dutycycle corresponding with tach signal; Follow the tracks of the excavator operation load variations; The current value of hydraulic pressure main pump one, two electric proportional valves 3 of the final output of adjustment in real time promptly keeps the main pump setting power constant, adjusts the power output of main pump 1 and main pump 27 in real time;
Through the assignment of traffic of master controller 16 final each pump of control, utilize the power of motor 9, make the pump power summation that is assigned to main pump 1, main pump 27 and heat radiation pump 5 be no more than the power output of motor 9.
Claims (1)
1. the energy-saving control method of an excavator cooling system is characterized in that, it is following specifically to control step:
(1), after motor (9) starts, select power mode, master controller (16) reads in this signal through the CAN bus, sets the maximum speed value that motor under each power mode (9) is set when unloaded through multifunction electronic watch-dog (11);
(2), operation grip (15), set the rotating speed target operating position of motor (9), master controller (16) input port 1 collects this input signal;
(3), through computing, master controller (16) through and Engine ECU controller (10) between the CAN EBI, according to the J1939 communications protocol, send the corresponding accelerator open degree percentages of grip (15), thus the rotating speed of control motor (9);
(4), master controller (16) is through output port 2; The minimum unloaded idling of corresponding grip (15) is to the highest unloaded idle position; Set pulse-width modulation PWM signal with the non-linear corresponding dutycycle from the minimum current value to the lowest high-current value of tach signal; Promptly preestablish main pump one (6) and main pump two (7) current values, the swash plate angle of adjustment main pump one (6) and main pump two (7), the discharge capacity of change main pump one (6) and main pump two (7);
(5), the output port 1 through master controller (16), the pulse-width modulation PWM signal code value of output duty cycle is 0mA, the swash plate angle of adjustment heat radiation pump (5) makes its discharge capacity and heat radiation power maximum;
(6), master controller (16) reads in coolant water temperature T1, the intake air temperature T2 of motor (9) through the CAN bus, reads in hydraulic oil temperature T3 through the input port;
(7), carrying out logic judges:
Set; The minimum value and the maximum value of the coolant water temperature that T1min and T1max control when being respectively motor (9) operate as normal; The minimum value and the maximum value of the intake air temperature that T2min and T2max control when being respectively motor (9) operate as normal, the minimum value and the maximum value of the hydraulic oil temperature that T3min and T3max control when being respectively motor (9) operate as normal;
When T1＞T1max or T2＞T2max or T3＞T3max, the maintenance output current value is 0mA, and the swash plate angle of adjustment heat radiation pump (5) makes its discharge capacity maximum, and it is maximum that the power of the pump (5) that promptly dispels the heat reaches;
When T1＜T1min and T2＜T2min and T3＜T3min, output current value is a maximum current, and adjustment heat radiation pump (5) swash plate angle makes its discharge capacity minimum, and the power of the pump (5) that promptly dispels the heat is minimum;
When T1min＜T1＜T1max and T2min＜T2＜T2max and T3min＜T3＜T3max; The power of master controller (16) output current value adjustment heat radiation pump (5); Must satisfy priority principle according to heat radiation power weighs---and the cooling water cooling system power of motor (9) has precedence over hydraulic oil temperature cooling system power, promptly satisfies normal working temperature priority principle T1＞T2＞T3; Each temperature of T1, T2 and T3 is divided into three kinds of temperature sections, carries out the linearity adjustment with three kinds of slope K 1, K2 and K3, promptly output current value carries out the linearity adjustment to the discharge capacity of heat radiation pump (5);
(8), relatively what judge the power N of pump (5) actual needs that promptly dispels the heat to master controller (16) according to heat radiation power required under the various radiating conditions
0The dump power N that compares with the peak power Nmax of heat radiation pump (5)
1=Nmax-N
0
(9) work as N
0During＜Nmax, with dump power N
1, convert through condition, take control strategy, on the power basis of main pump one (6) that is provided with in advance and main pump two (7), suitably increase the electric current preset value of hydraulic pressure main pump one, two electric proportional valves (3), promptly increase its power;
(10), main pump two pressure sensors (14), main pump one pressure sensor (13), the swing arm that read in through input port 3, input port 4, input port 5, input port 6, input port 7 of master controller (16) plays the signal that pressure sensor (17), dipper are received pressure sensor (18) and scraper bowl receipts pressure sensors (19); And the actual speed and the rate of load condensate signal of the motor (9) that reads in through the CAN bus; Load variations when judging excavator operation, the target setting rotating speed and the actual speed of comparison engine (9);
(11), carry out two-dimentional fuzzy and regulate, realize that ESS control is revolution speed sensing control; Follow the tracks of the excavator operation load variations; The current value of hydraulic pressure main pump one, two electric proportional valves (3) of the final output of adjustment; Thereby adjust the swash plate angle and the output displacement size of main pump one (6) and main pump two (7) in real time, thereby increase the power of main pump one (6) and main pump two (7);
(12), work as N
0During=Nmax; Main pump two pressure sensors (14) that master controller (16) reads in through input port 3, input port 4, input port 5, input port 6, input port 7, main pump one pressure sensor (13), swing arm play the signal that pressure sensor (17), dipper receipts pressure sensor (18) and scraper bowl are received pressure sensors (19); And the actual speed and the rate of load condensate signal of the motor (9) that reads in through the CAN bus; Load conversion when judging excavator operation once more, the target setting rotating speed and the actual speed of comparison engine (9);
(13), carry out two-dimentional fuzzy adjusting, ESS control and revolution speed sensing control once more; Master controller (16) output keeps preestablishing the pulse-width modulation PWM signal of the dutycycle corresponding with tach signal; It is the current value of hydraulic pressure main pump one, two electric proportional valves (3); Keep the main pump setting power constant, the power output of adjustment main pump one (6) and main pump two (7);
(14), finally control the assignment of traffic of each pump, utilize the power of motor (9), make the pump power summation that is assigned to main pump one (6), main pump two (7) and the pump (5) that dispels the heat be no more than the power output of motor (9) through master controller (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110392424 CN102493521B (en) | 2011-12-01 | 2011-12-01 | Energy-saving control method for cooling system of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110392424 CN102493521B (en) | 2011-12-01 | 2011-12-01 | Energy-saving control method for cooling system of excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102493521A true CN102493521A (en) | 2012-06-13 |
| CN102493521B CN102493521B (en) | 2013-09-25 |
Family
ID=46185377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110392424 Active CN102493521B (en) | 2011-12-01 | 2011-12-01 | Energy-saving control method for cooling system of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102493521B (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733441A (en) * | 2012-06-15 | 2012-10-17 | 三一重机有限公司 | Raising speed control energy saving system and method for excavator |
| CN102777272A (en) * | 2012-07-23 | 2012-11-14 | 中联重科股份有限公司渭南分公司 | Overload protection control equipment, method and system and engineering machinery |
| CN103306332A (en) * | 2013-06-24 | 2013-09-18 | 上海三一重机有限公司 | Method for setting main pump flow of excavator |
| WO2014000390A1 (en) * | 2012-06-26 | 2014-01-03 | 湖南三一智能控制设备有限公司 | Method for controlling transmission system of electrically-driven tramcar and tramcar using method |
| CN107678283A (en) * | 2017-11-08 | 2018-02-09 | 山西新华化工有限责任公司 | Vehicle air quality PWM wave self-adaption control systems |
| CN107882102A (en) * | 2017-11-09 | 2018-04-06 | 南京工业大学 | Energy-saving control method based on negative flow pump power valve current |
| CN109990090A (en) * | 2019-03-29 | 2019-07-09 | 长安大学 | A power matching method of a loader engine and a hydraulic torque converter |
| CN113107917A (en) * | 2021-04-09 | 2021-07-13 | 三一重机有限公司 | Electro-hydraulic control method and device and working machine |
| CN113738523A (en) * | 2021-08-02 | 2021-12-03 | 潍柴动力股份有限公司 | Vehicle system oil temperature control method and device |
| CN114137828A (en) * | 2021-12-30 | 2022-03-04 | 中联重科股份有限公司 | Dynamic PID control method, system and storage medium for engineering machinery power matching |
| CN114837790A (en) * | 2022-05-13 | 2022-08-02 | 徐州徐工基础工程机械有限公司 | Heat balance management system and management strategy for explosion-proof diesel engine |
| CN115369937A (en) * | 2022-08-26 | 2022-11-22 | 中联重科土方机械有限公司 | Positive flow excavator and control method, control device and controller thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227153B1 (en) * | 1999-09-17 | 2001-05-08 | General Electric Company | Engine cooling apparatus and method |
| JP2005036881A (en) * | 2003-07-14 | 2005-02-10 | Shin Caterpillar Mitsubishi Ltd | Oil temperature control method for hydraulic circuit |
| CN101974926A (en) * | 2010-09-29 | 2011-02-16 | 三一重机有限公司 | Oil returning system capable of automatically controlling hydraulic oil temperature used for excavator |
| CN102129807A (en) * | 2011-01-18 | 2011-07-20 | 山东交通学院 | Experimental device for electronic power optimizing control system of excavator |
-
2011
- 2011-12-01 CN CN 201110392424 patent/CN102493521B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6227153B1 (en) * | 1999-09-17 | 2001-05-08 | General Electric Company | Engine cooling apparatus and method |
| JP2005036881A (en) * | 2003-07-14 | 2005-02-10 | Shin Caterpillar Mitsubishi Ltd | Oil temperature control method for hydraulic circuit |
| CN101974926A (en) * | 2010-09-29 | 2011-02-16 | 三一重机有限公司 | Oil returning system capable of automatically controlling hydraulic oil temperature used for excavator |
| CN102129807A (en) * | 2011-01-18 | 2011-07-20 | 山东交通学院 | Experimental device for electronic power optimizing control system of excavator |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733441A (en) * | 2012-06-15 | 2012-10-17 | 三一重机有限公司 | Raising speed control energy saving system and method for excavator |
| WO2014000390A1 (en) * | 2012-06-26 | 2014-01-03 | 湖南三一智能控制设备有限公司 | Method for controlling transmission system of electrically-driven tramcar and tramcar using method |
| CN102777272A (en) * | 2012-07-23 | 2012-11-14 | 中联重科股份有限公司渭南分公司 | Overload protection control equipment, method and system and engineering machinery |
| CN103306332A (en) * | 2013-06-24 | 2013-09-18 | 上海三一重机有限公司 | Method for setting main pump flow of excavator |
| CN103306332B (en) * | 2013-06-24 | 2019-03-01 | 上海三一重机股份有限公司 | A method of setting excavator main pump flow |
| CN107678283A (en) * | 2017-11-08 | 2018-02-09 | 山西新华化工有限责任公司 | Vehicle air quality PWM wave self-adaption control systems |
| CN107882102A (en) * | 2017-11-09 | 2018-04-06 | 南京工业大学 | Energy-saving control method based on negative flow pump power valve current |
| CN109990090B (en) * | 2019-03-29 | 2020-07-10 | 长安大学 | A power matching method of a loader engine and a hydraulic torque converter |
| CN109990090A (en) * | 2019-03-29 | 2019-07-09 | 长安大学 | A power matching method of a loader engine and a hydraulic torque converter |
| CN113107917A (en) * | 2021-04-09 | 2021-07-13 | 三一重机有限公司 | Electro-hydraulic control method and device and working machine |
| CN113738523A (en) * | 2021-08-02 | 2021-12-03 | 潍柴动力股份有限公司 | Vehicle system oil temperature control method and device |
| CN114137828A (en) * | 2021-12-30 | 2022-03-04 | 中联重科股份有限公司 | Dynamic PID control method, system and storage medium for engineering machinery power matching |
| CN114837790A (en) * | 2022-05-13 | 2022-08-02 | 徐州徐工基础工程机械有限公司 | Heat balance management system and management strategy for explosion-proof diesel engine |
| CN114837790B (en) * | 2022-05-13 | 2024-03-12 | 徐州徐工基础工程机械有限公司 | Explosion-proof diesel engine heat balance management system and management strategy |
| CN115369937A (en) * | 2022-08-26 | 2022-11-22 | 中联重科土方机械有限公司 | Positive flow excavator and control method, control device and controller thereof |
| CN115369937B (en) * | 2022-08-26 | 2024-04-12 | 中联重科土方机械有限公司 | Positive flow excavator, control method, control device and controller thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102493521B (en) | 2013-09-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102493521B (en) | Energy-saving control method for cooling system of excavator | |
| CN103397678B (en) | Power matching energy-saving system and method for engine and hydraulic pump | |
| CN102418362B (en) | Novel independent heat dissipation control system for hydraulic excavator | |
| CN102383454B (en) | Device and method for controlling throttle of electronic fuel injection diesel engine for excavator | |
| CN102635137A (en) | Total power control system of mechanical equipment | |
| CN102230417A (en) | Engine electric control auxiliary cooling system freeing from engine rotational speed influence | |
| CN110984282B (en) | Excavator control method based on maximum available torque of engine | |
| CN101086232A (en) | Concrete transfer pump energy-saving control method | |
| CN202359604U (en) | Energy-saving control system of radiating system of excavator | |
| WO2013185444A1 (en) | Energy-saving speed increasing control system and method for excavator | |
| CN202325800U (en) | Cooling system of engine and engineering machinery | |
| CN205064458U (en) | Loader fan drive hydraulic system | |
| CN103590886A (en) | Heat dissipation control method for engine of loading machine | |
| CN201405725Y (en) | Crane and controllable cooling system thereof | |
| CN103074914B (en) | Engineering machinery heat dissipation control system, control method and excavator | |
| CN101851941B (en) | Cooling control system of fan of bulldozer | |
| CN202560603U (en) | Fan control system | |
| CN202627059U (en) | Novel device for preventing engine of hydraulic excavator from being instantly decelerated | |
| CN103075238A (en) | Hydraulic fan cooling system adopting CAN (controller area network) information integrated control | |
| CN202273261U (en) | Independent heat dissipation control system of novel hydraulic excavator | |
| CN101929169B (en) | Hydraulic excavator with deactivated cylinder | |
| CN202065045U (en) | Rotation speed control system for cooling fan of automobile engine | |
| CN111197777A (en) | Flow distribution control method for central flue system of high-rise building | |
| CN201363198Y (en) | Electronic throttle controller of engine | |
| CN101493049B (en) | Electronic throttle controller of engine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |