CN110984269B - Intelligent consumption reduction method for bulldozer - Google Patents

Intelligent consumption reduction method for bulldozer Download PDF

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Publication number
CN110984269B
CN110984269B CN201911315716.XA CN201911315716A CN110984269B CN 110984269 B CN110984269 B CN 110984269B CN 201911315716 A CN201911315716 A CN 201911315716A CN 110984269 B CN110984269 B CN 110984269B
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engine
rate
speed regulation
value
initial
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CN110984269A (en
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武占刚
李凯
孔令平
李健生
季小燕
苏远岗
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Shantui Chutian Construction Machinery Co Ltd
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Shantui Chutian Construction Machinery Co Ltd
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/84—Drives or control devices therefor, e.g. hydraulic drive systems
    • E02F3/841—Devices for controlling and guiding the whole machine, e.g. by feeler elements and reference lines placed exteriorly of the machine

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

The embodiment of the invention discloses an intelligent consumption reduction method for a bulldozer. The intelligent consumption reduction method of the bulldozer comprises the following steps: determining an operating mode of the engine, the operating mode including at leastA first mode of operation; when the engine runs in the first running mode, the parameters of the engine are obtained, and the parameters comprise the initial speed regulation rate and the average value S of the fuel consumption rate of the first running modeFlat n(ii) a According to the average value S of fuel consumptionFlat nAnd the initial pacing rate for the first operating mode adjusts the actual pacing rate of the engine; and adjusting the output torque M of the engine according to the actual speed regulation rate. By adjusting the speed regulation rate of the engine under different working conditions, when the load changes in the running process of the bulldozer, the power and the load are optimally matched, so that the effect of reducing oil consumption is achieved while the rotating speed is ensured.

Description

Intelligent consumption reduction method for bulldozer
Technical Field
The embodiment of the invention relates to a control technology of a bulldozer, in particular to an intelligent consumption reduction method of the bulldozer.
Background
During operation of a bulldozer, sudden load changes are often encountered, requiring adjustments to the operating parameters of the engine.
An engine ECU (Electronic Control Unit) is a device for controlling the operation of an engine, the operation modes of the engine of the bulldozer are constant rotating speed Control modes at present, and when the load is increased, in order to ensure that the rotating speed of the engine does not drop, the engine ECU can increase oil injection preferentially, so that the rotating speed is ensured to avoid rotating speed fluctuation.
However, the fuel consumption is high while the rotation speed is ensured, which results in low economic efficiency of the bulldozer.
Disclosure of Invention
The invention provides an intelligent consumption reduction method for a bulldozer, which aims to realize the optimal matching of power and load by controlling different speed regulation rates of an engine in the running process of the bulldozer, thereby reducing oil consumption while ensuring the rotating speed.
In a first aspect, an embodiment of the present invention provides an intelligent consumption reduction method for a bulldozer, including:
determining operating modes of an engine, the operating modes including at least a first operating mode;
when the engine runs in the first running mode, the parameters of the engine are obtained, and the parameters comprise the initial speed regulation rate and the average value S of the fuel consumption rate of the first running modeFlat n；
According to the average value S of the fuel consumption rateFlat nAnd the initial rate of speed adjustment of the first operating mode adjusts the actual rate of speed adjustment of the engine;
and adjusting the output torque M of the engine according to the actual speed regulation rate.
Optionally, the operation modes further include a second operation mode and a third operation mode;
the determining an operating mode of the engine includes:
acquiring a load factor F of the engine;
when the load factor F is equal to or less than a first threshold value, the engine is operated in the first operation mode;
when the load factor F is greater than the first threshold value and less than a second threshold value, the engine is operated in the second operating mode;
when the load factor F is equal to or greater than the second threshold value, the engine is operated in the third operating mode.
Optionally, the initial rate of the first operation mode is i1(ii) a The initial rate of the second operating mode is i0(ii) a The initial slew rate for the third mode of operation is 0, where i1＞i0。
Optionally, before acquiring the parameters of the engine, the method further comprises:
will continuously adjust the number of times N1And number of consecutive stabilizations N2Set to an initial value of 0.
Optionally, according to said average specific fuel consumption value SFlat nAnd the initial rate adjustment of the first operating mode adjusting the actual rate of the engine comprises:
step a) judgment (S)L-SFlat n)÷SLWhether the result of (1) is greater than a first preset value, wherein SLIs the theoretical fuel consumption rate of the engine;
if the step b) is yes, calculating the actual speed regulation rate according to the initial speed regulation rate of the first operation mode and a preset algorithm, and continuously regulating the times N1Adding 1 to the value of (a), and returning to execute the step a);
if not, continuously adjusting the times N1The reset is 0.
Optionally, after the determination result is negative, the method further includes:
judgment (S)L-SFlat n)÷SLWhether the result of (1) is less than a second preset value;
if yes, the continuous stable times N are carried out2Adding 1 to the value of (c);
if not, the continuous stable times N are determined2The reset is 0.
Optionally, the method for intelligently reducing consumption of the bulldozer further comprises:
judging the continuous stable times N2Whether the value is greater than 2;
if yes, keeping the actual speed regulation operation of the current engine, and continuously regulating the times N1Set to an initial value of 0;
and if not, taking the actual speed regulation rate of the current engine as the initial speed regulation rate of the first operation mode, and entering the next actual speed regulation rate regulation.
Optionally, the method for intelligently reducing consumption of the bulldozer further comprises:
judging the continuous adjustment times N1Whether or not the value of (2) is greater than 3 and the number of consecutive stabilizations N2Whether the value is greater than 2;
and if so, outputting alarm information, wherein the alarm information is used for indicating whether to perform matching again.
Optionally, after the determination result is yes, the method further includes:
judging the actual speed regulation rate i of the current enginenWhether the current value is greater than a third preset value;
if yes, then keep sending out currentlyActual rate of movement inThe change is not changed;
and if not, taking the actual speed regulation rate of the current engine as the initial speed regulation rate of the first operation mode, and entering the next actual speed regulation rate regulation.
In a second aspect, an embodiment of the present invention further provides a bulldozer including: a display, a controller and an engine ECU,
the controller includes: the device comprises an operation mode determining module, a parameter acquiring module, a rate adjusting module and a torque output module;
the operating mode determination module is used for determining operating modes of the engine, and the operating modes at least comprise a first operating mode;
the parameter acquisition module is used for acquiring parameters of the engine when the engine runs in the first running mode, wherein the parameters comprise the initial speed regulation rate and the average value S of the fuel consumption rate of the first running modeFlat n；
The rate regulation adjusting module is used for adjusting the rate according to the average value S of the fuel consumption rateFlat nAnd the initial rate of speed adjustment of the first operating mode adjusts the actual rate of speed adjustment of the engine;
and the torque output module is used for adjusting the output torque M of the engine according to the actual speed regulation rate.
The speed regulation rate of the engine is adjusted by monitoring the engine parameters through the controller and combining with a calculation and judgment program preset by an engine ECU, so that the problems that the engine has high oil consumption and causes low economy of the bulldozer while ensuring the rotating speed when the bulldozer encounters load change are solved, different speed regulation rates of the engine are controlled in the running process of the bulldozer to achieve the optimal matching of power and load, and the effect of reducing the oil consumption is achieved while ensuring the rotating speed.
Drawings
FIG. 1 is a flowchart of an intelligent consumption reduction strategy for a bulldozer according to a first embodiment of the present invention;
FIG. 2 is a flowchart illustrating an intelligent consumption reduction strategy for a bulldozer according to a second embodiment of the present invention;
FIG. 3 is a flowchart of an intelligent consumption reduction strategy for a bulldozer according to a third embodiment of the present invention;
fig. 4 is a schematic structural view of a bulldozer according to a fourth embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a flowchart of an intelligent consumption reduction strategy for a bulldozer according to an embodiment of the present invention, where the embodiment is applicable to a situation where fuel consumption is reduced while a rotation speed is ensured in a working process of the bulldozer, and the method may be executed by the bulldozer, and specifically includes the following steps:
s101, determining an operation mode of an engine;
after the bulldozer is powered up, the bulldozer engine begins to operate, and the operating mode of the engine is determined based on the operating parameters of the bulldozer engine, which includes at least a first operating mode.
S102, when the engine runs in a first running mode, obtaining parameters of the engine;
specifically, the first operation mode is a super energy-saving mode, and when the engine of the bulldozer operates in the first operation mode, various parameters of the engine are obtained and stored; exemplary parameters include initial rate of turn and average specific fuel consumption SFlat nWherein the initial rate is in the range of 0<i1<7% average fuel consumption SFlat nFor fuel consumption rate S per half hour1The parameter further includes engine output torque M.
S103, according to the average value S of the fuel consumption rateFlat nAnd the initial pacing rate for the first operating mode adjusts the actual pacing rate of the engine;
the average value S of the obtained fuel consumption rateFlat nAnd a firstThe initial speed regulation rate of the running mode is calculated through a preset program to obtain the actual speed regulation rate of the engine of the bulldozer at the moment, and the speed regulation rate of the engine is adjusted.
S104, adjusting the output torque M of the engine according to the actual speed regulation rate;
the output torque M of the engine is adjusted according to the actual speed regulation rate, the problem of energy waste caused by overlarge actual power of the engine under light load is solved, and the fuel consumption rate of the engine is reduced under the condition that the rotating speed of the engine meets the load requirement.
According to the technical scheme of the embodiment of the invention, the working condition and the parameters of the engine of the bulldozer are monitored, the preset program is used for calculating the speed regulation rate of the engine and regulating the actual speed regulation rate of the engine, the problem that the engine preferentially ensures the rotating speed but has overhigh oil consumption under different working conditions is solved, and the effects of reducing the oil consumption and improving the economy of the bulldozer while ensuring the rotating speed are achieved.
Example 2
Fig. 2 is a flowchart of an intelligent consumption reduction strategy for a bulldozer according to a second embodiment of the present invention, as shown in fig. 2,
s201, obtaining a load factor F of an engine;
the load factor refers to the ratio of the power of the engine when actually operating to the maximum available power that the engine can deliver at the same speed. The operating state of the engine can be judged according to the load factor of the engine.
S202, determining an operation mode of the engine;
the engine has a first operating mode, a second operating mode and a third operating mode; determining an operation mode of the engine according to a load factor F of the engine, and operating the engine in the first operation mode when the load factor F is smaller than or equal to a first threshold value; when the load factor F is greater than the first threshold value and less than a second threshold value, the engine is operated in a second operation mode; when the load factor F is equal to or greater than the second threshold value, the engine is operated in the third operating mode. Optionally, the second operation mode is an energy saving mode, and the third operation mode is a normal mode. The first threshold may be 30% and the second threshold may be 60%.
S203, determining an initial speed regulation rate of the operation of the engine;
the speed regulation rate represents the drop degree of the rotating speed of the diesel engine after bearing load and is an important parameter of the engine. When the engine is in different running modes, the initial speed regulation rate is different; initial rate i of the first operating mode1Is 0<i1<7% initial rate i of the second operating mode0Is 0<i0<3%, and i0<i1The initial rate of the third operating mode is 0, i.e. the engine is operated in the third operating mode without any energy consumption control.
S204, when the engine runs in a first running mode, obtaining parameters of the engine;
when the engine runs in the first running mode, the engine adopting the intelligent consumption reduction strategy is adjusted at the initial speed rate i1Working in the state, acquiring the running parameters of the engine at the moment, and taking the running parameters as the basis of the subsequent intelligent consumption reduction adjustment, wherein the acquired parameters comprise the initial speed regulation rate i of the first running mode1And average specific fuel consumption SFlat nAverage fuel consumption SFlat nCalculating the fuel consumption rate S in the time period for each half hour record1Average value of (d); and acquiring and storing the parameters of the engine each time.
S205 average value S based on specific fuel consumptionFlat nAnd the initial pacing rate for the first operating mode adjusts the actual pacing rate of the engine;
the average value S of the obtained fuel consumption rateFlat nAnd calculating the actual speed regulation rate of the engine of the bulldozer at the moment through a preset program according to the initial speed regulation rate of the first operation mode, and regulating the speed regulation rate of the engine.
S206, adjusting the output torque M of the engine according to the actual speed regulation rate;
the output torque M of the engine is adjusted according to the actual speed regulation rate, the problem of energy waste caused by overlarge actual power of the engine under light load is solved, and the fuel consumption rate of the engine is reduced under the condition that the rotating speed of the engine meets the load requirement.
EXAMPLE III
FIG. 3 is a flowchart of an intelligent consumption reduction strategy for a bulldozer according to a third embodiment of the present invention, as shown in FIG. 3
And S301, determining the running mode of the engine.
S302, continuously adjusting the times N1And number of consecutive stabilizations N2Set to an initial value of 0;
when the rate of the engine is adjusted by using the intelligent consumption reduction method, the actual rate of the engine needs to be calculated by a preset algorithm, and the continuous adjustment times N need to be calculated in the calculation process1And number of consecutive stabilizations N2Counting and judging are carried out, so that the continuous adjustment times N are required before adjustment calculation1And number of consecutive stabilizations N2Performing an initialization, i.e. setting the number of successive adjustments N1And number of consecutive stabilizations N2All initial values of (2) are 0.
And S303, acquiring parameters of the engine.
S304, judging (S)L-SFlat n)÷SLWhether the result of (1) is greater than a first preset value;
if yes, executing S305, and if no, executing S306; the first preset value is 15%.
S305, calculating an actual rate according to the initial rate of the first operation mode and a preset algorithm, and continuously adjusting the times N1Adds 1 to the value of (1), and returns to execute S304 by taking the actual speed regulation rate of the current engine as the initial speed regulation rate of the first running mode;
calculating to obtain an actual rate i according to the initial rate and a preset algorithm2＝i1+ 0.5%, when the engine has completed one regulation, the number of successive adjustments N will therefore be continuous1Adds 1 to the value of (c), and sets the calculated actual rate i2The initial rate adjustment for the first operation mode is used for the next rate adjustment.
S306, continuously adjusting the times N1Reset to 0;
when the judgment in S304 is NO, the fuel consumption rate of the engine is at this timeThe fuel consumption rate meeting the requirements of the current working condition does not need to adjust the speed, so the continuous adjustment times N1The reset is 0.
S307, judgment (S)L-SFlat n)÷SLWhether the result of (1) is less than a second preset value;
if the determination result is yes, executing S309, otherwise, executing S308; the second preset value is 10%.
S308, continuously stabilizing the times N2Reset to 0;
if the determination result in S307 is no, the fuel consumption rate of the engine does not reach the steady state, and the fuel consumption rate of the engine cannot be maintained for a long time, so the number N of consecutive stabilizations is set2The reset is 0.
S309, stabilizing the times N continuously2Adding 1 to the value of (c);
when the judgment result of the S307 is yes, the fuel consumption rate of the engine reaches a stable condition, the fuel consumption rate of the engine at the moment can be kept for a long time, and the speed regulation rate at the moment accords with the current working condition; therefore, will stabilize for a number of times N2The value of (c) is added to 1.
S310, judging continuous stable times N2Whether the value is greater than 2;
if the determination result is yes, executing S312, and if the determination result is no, executing S311; number of consecutive stabilizations N2The value represents whether the actual rate of speed regulation and the specific fuel consumption at this time are in accordance with the current working condition.
S311, taking the actual speed regulation rate of the current engine as the initial speed regulation rate of the first operation mode, and entering the next actual speed regulation rate regulation;
if the determination result in S310 is negative, the actual rate and the fuel consumption rate at this time are not the optimal matching between the power and the load, and the oil consumption effect cannot be reduced while the rotation speed is ensured, so that the engine parameters need to be continuously monitored, and the rate is adjusted.
S312, keeping the actual speed regulation operation of the current engine, and continuously regulating the times N1Set to an initial value of 0;
when the judgment result of the S310 is yes, the actual speed regulation rate and the fuel consumption rate at the moment enable the power and the load to achieve the optimal matching, the rotating speed is guaranteed, and the fuel consumption effect is reduced, so that the engine parameters do not need to be monitored continuously, the speed regulation rate does not need to be regulated, and the actual speed regulation rate at the moment is continuously adopted by the engine in the running process; at the moment, one-time intelligent consumption reduction adjustment is completed, and the number of times N of continuous adjustment is adjusted1Set to an initial value of 0.
S313, judging the actual speed regulation rate i of the current enginenWhether the current value is greater than a third preset value;
if yes, executing S314, and if no, executing S311; the third preset value is 7%, when the actual modulation rate is greater than 7%, the modulation rate of the engine can not be increased any more.
S314, maintaining the actual speed regulation rate i of the current enginenThe change is not changed;
and when the judgment result of S313 is yes, the actual speed regulation rate is greater than 7%, the speed regulation rate of the engine cannot be increased any more, and the engine keeps the actual speed regulation rate before the adjustment to operate. In the number of continuous stabilization times N2The value is greater than 2 and the actual speed regulation i of the current enginenWhen the actual speed is larger than the third preset value, the engine is actually adjusted at the current speed i in the running processnIn operation, engine parameters are kept monitored and no adjustments are made to the throttle rate.
When the result of the determination in S313 is negative, the rate of the engine can be further adjusted, so that the current actual rate of the engine is returned to the operation S311 as the initial rate of the first operation mode, and the next actual rate adjustment is performed.
S315, adjusting the output torque M of the engine according to the actual speed regulation rate;
the output torque M of the engine is adjusted according to the actual speed regulation rate, the problem of energy waste caused by the fact that the actual power of the engine does not accord with the required power is solved, and the fuel consumption rate of the engine is reduced under the condition that the rotating speed of the engine meets the load requirement.
In the aboveOn the basis of the embodiment, the method further comprises the following steps: in the judgment of continuous stability times N2The value is greater than 2 and the actual speed regulation i of the current enginenIf the preset algorithm judges the continuous adjustment times N in the stable operation process after the preset value is larger than the third preset value1When the numerical value is more than or equal to 3, outputting alarm information, wherein the alarm information is used for indicating whether to carry out matching again; when judging the continuous adjustment times N1The numerical value of (3) is more than 3, the load of the engine of the bulldozer is greatly fluctuated at the moment, the speed regulation rate does not accord with the working condition at the moment, and the oil consumption can not be reduced while the rotating speed is ensured, so that the matching is needed again; if the preset algorithm judges the continuous adjustment times N1If less than 3, no adjustment is made to the engine's pacing rate.
Example four
Fig. 4 is a schematic structural view of a bulldozer according to a fourth embodiment of the present invention, and as shown in fig. 4, the bulldozer includes: display 10, controller 20, and engine ECU 30;
the display 10 is used for displaying parameters and selecting an operation mode; the controller 20 is used for calling and sending the corresponding parameters and the collected engine operation parameters to the engine ECU30 according to the selected operation mode, receiving data and instructions sent by the engine ECU, acting according to the instructions of the engine ECU, and adjusting the engine speed regulation rate and the engine torque; the engine ECU30 is configured to receive the parameters sent by the controller 20, calculate the rate of modulation according to a preset algorithm, and send the calculated actual rate of modulation and a modulation command to the controller 20.
The controller 20 includes: the device comprises an operation mode determining module, a parameter acquiring module, a rate adjusting module and a torque output module;
an operating mode determination module to determine operating modes of the engine, the operating modes including at least a first operating mode; the operation mode may be determined based on an external command transmitted from the display or based on the acquired load factor of the engine.
A parameter acquisition module for acquiring a parameter of the engine when the engine is operating in a first operating mode, the parameter including a first parameterInitial rate adjustment and average specific fuel consumption S for an operating modeFlat n(ii) a The parameter acquisition module acquires and stores parameters of the engine.
A rate adjustment module for adjusting the rate according to the average value S of the fuel consumptionFlat nAnd the initial pacing rate for the first operating mode adjusts the actual pacing rate of the engine; the speed regulation rate adjusting module adjusts the speed regulation rate of the engine, so that the power and the load of the engine reach the optimal matching state, and the effect of reducing oil consumption is achieved while the rotating speed is ensured.
The torque output module is used for adjusting the output torque M of the engine according to the actual speed regulation rate; the engine ECU30 is transmitted with operation commands and data of the output torque M of the engine.
Optionally, the controller 20 further comprises a data storage module for storing the modulation rate i corresponding to different engine operation parametersn(ii) a When the same working condition is met again, the corresponding parameters are directly called without calculation again, and the adjusting time is saved.
The engine ECU30 includes an execution unit for controlling engine operation in accordance with commands and data transmitted from the controller 20, and adjusts the relationship between the engine and the load by adjusting the output torque M of the engine.
The embodiment of the invention adjusts the speed regulation rate of the engine by monitoring the engine parameters through the controller and combining with the calculation and judgment program preset by the engine ECU, solves the problem that the engine has higher oil consumption and lower economy of the bulldozer when the bulldozer meets the load change while the rotating speed of the engine is ensured, and realizes that the different speed regulation rates of the engine are controlled to achieve the optimal matching of power and load in the running process of the bulldozer, thereby achieving the effect of reducing the oil consumption while ensuring the rotating speed.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (8)

1. An intelligent consumption reduction method for a bulldozer is characterized by comprising the following steps:
determining operating modes of an engine, the operating modes including at least a first operating mode;
when the engine runs in the first running mode, the number N of times of continuous adjustment is1And number of consecutive stabilizations N2Setting to an initial value of 0, obtaining parameters of the engine, the parameters including an initial rate of modulation and an average specific fuel consumption S for a first operating modeFlat n；
Step a) judgment (S)L-SFlat n)÷SLWhether the result of (1) is greater than a first preset value, wherein SLIs the theoretical fuel consumption rate of the engine;
if the step b) is yes, calculating the actual speed regulation rate according to the initial speed regulation rate of the first operation mode and a preset algorithm, and continuously regulating the times N1Adding 1 to the value of (a), and returning to execute the step a);
if not, continuously adjusting the times N1Reset to 0;
and adjusting the output torque M of the engine according to the actual speed regulation rate.
2. The intelligent consumption reduction method for bulldozers according to claim 1, characterized in that said operation modes further comprise a second operation mode and a third operation mode;
the determining an operating mode of the engine includes:
acquiring a load factor F of the engine;
when the load factor F is equal to or less than a first threshold value, the engine is operated in the first operation mode;
when the load factor F is greater than the first threshold value and less than a second threshold value, the engine is operated in the second operating mode;
when the load factor F is equal to or greater than the second threshold value, the engine is operated in the third operating mode.
3. The method of claim 2, wherein the initial slew rate of the first operating mode is i1(ii) a The initial rate of the second operating mode is i0(ii) a The initial slew rate for the third mode of operation is 0, where i1＞i0。
4. The intelligent consumption reduction method for the bulldozer according to claim 1, wherein after said determination result is negative, the method further comprises:
judgment (S)L-SFlat n)÷SLWhether the result of (1) is less than a second preset value;
if yes, the continuous stable times N are carried out2Adding 1 to the value of (c);
if not, the continuous stable times N are determined2The reset is 0.
5. The intelligent consumption reduction method for the bulldozer according to claim 4, further comprising:
judging the continuous stable times N2Whether the value is greater than 2;
if yes, keeping the actual speed regulation operation of the current engine, and continuously regulating the times N1Set to an initial value of 0;
and if not, taking the actual speed regulation rate of the current engine as the initial speed regulation rate of the first operation mode, and entering the next actual speed regulation rate regulation.
6. The intelligent consumption reduction method for the bulldozer according to claim 1, further comprising:
judging the continuous adjustment times N1Whether or not the value of (2) is greater than 3 and the number of consecutive stabilizations N2Whether the value is greater than 2;
and if so, outputting alarm information, wherein the alarm information is used for indicating whether to perform matching again.
7. The intelligent consumption reduction method for the bulldozer according to claim 5, wherein, after said determination result is yes, the method further comprises:
judging the actual speed regulation rate i of the current enginenWhether the current value is greater than a third preset value;
if yes, maintaining the actual speed regulation rate i of the current enginenThe change is not changed;
and if not, taking the actual speed regulation rate of the current engine as the initial speed regulation rate of the first operation mode, and entering the next actual speed regulation rate regulation.
8. A bulldozer, comprising: display, controller and engine ECU characterized in that, the controller includes: the device comprises an operation mode determining module, a parameter acquiring module, a rate adjusting module and a torque output module;
the operating mode determination module is used for determining operating modes of the engine, and the operating modes at least comprise a first operating mode;
the parameter acquisition module is used for acquiring parameters of the engine when the engine runs in the first running mode, wherein the parameters comprise the initial speed regulation rate and the average value S of the fuel consumption rate of the first running modeFlat n；
The rate regulation adjusting module is used for adjusting the rate according to the average value S of the fuel consumption rateFlat nAnd the initial rate of speed adjustment of the first operating mode adjusts the actual rate of speed adjustment of the engine;
the torque output module is used for adjusting the output torque M of the engine according to the actual speed regulation rate;
wherein before the obtaining of the parameters of the engine, the method further comprises: will continuously adjust the number of times N1And number of consecutive stabilizations N2Set to an initial value of 0;
according to the average value S of the fuel consumption rateFlat nAnd initial pacing of said first operating mode adjusts actual pacing of the engineThe rate includes:
step a) judgment (S)L-SFlat n)÷SLWhether the result of (1) is greater than a first preset value, wherein SLIs the theoretical fuel consumption rate of the engine;
if the step b) is yes, calculating the actual speed regulation rate according to the initial speed regulation rate of the first operation mode and a preset algorithm, and continuously regulating the times N1Adding 1 to the value of (a), and returning to execute the step a);
if not, continuously adjusting the times N1The reset is 0.
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