CN104832301B

CN104832301B - Pump control method and device

Info

Publication number: CN104832301B
Application number: CN201510159153.5A
Authority: CN
Inventors: 周航; 胡智; 胡栋华
Original assignee: Beiqi Foton Motor Co Ltd
Current assignee: Hebei Leisa Heavy Construction Machinery Co., Ltd
Priority date: 2015-04-03
Filing date: 2015-04-03
Publication date: 2017-10-27
Anticipated expiration: 2035-04-03
Also published as: CN104832301A

Abstract

The invention discloses one kind pumping control method and device.Wherein, this method includes：The outlet pressure of main oil pump in pumping equipment is detected, target outlet pressure is obtained；The unit commutation number of times of master cylinder in pumping equipment is determined according to target outlet pressure and preset pressure threshold value；Obtain the current rotating speed of engine in pumping equipment；The current discharge capacity of main oil pump is calculated according to current rotating speed and unit commutation number of times；Obtain the current loads rate of engine；The rotating speed of target of engine and the target discharge capacity of main oil pump are determined according to current loads rate and default rate of load condensate threshold value；It is rotating speed of target by current adjustment of rotational speed, and current discharge capacity is adjusted to target discharge capacity.By the present invention, solving the rotating speed unreasonable distribution of the discharge capacity of main oil pump in the prior art and main oil pump causes the higher technical problem of oil consumption.

Description

Pump control method and device

Technical field

The present invention relates to pumping control field, in particular to one kind pumping control method and device.

Background technology

In the prior art, during concrete arm support pumper pump concrete, the pumping machine engine of concrete arm support pumper Main oil pump is driven to work by gearbox, transfer case, main oil pump output hydraulic oil promotes master cylinder to move back and forth, master cylinder Promote concrete piston delivering concrete.Specifically, concrete arm support pumper is carried out corresponding by the pump truck electric control system in it Logical operation after realize the functions such as pumping, rotating speed lifting, displacement control and remote control arm support, wherein, pump truck electric control system Mainly include electric appliance control box, operating case, wire harness, left branch leg operating case, right supporting leg operating case, display screen and remote control system Control module in the parts such as system, electric appliance control box is electric control system core.

Fig. 1 is the control principle drawing of concrete mixer electric control system in the prior art, and Fig. 2 is coagulation in the prior art The control schematic diagram of native pump truck electric control system.With reference to Fig. 1 and Fig. 2, to the electrical control system of concrete arm support pumper The control principle of system is illustrated.

The control principle of electric control system is specially：When being filled on electric, K3 relay adhesives, control module obtains electric, Now, S1 switches (i.e. 2 points of inputs of 1 point of module or module) are stirred, 12 points of module 11 or module can export plus-minus accordingly Fast signal controls its rotating speed to engine；When the module 8 of displacement signal input control module, 18 points of module can be corresponding defeated Go out electric current to displacement valves, the size of pumpage is controlled, to improve pumping number of times；Stir S2 switch (i.e. 3 points of module or module 4 Point input), begin pumping operation, control module according to the input condition of 6 points of 3 points of module, 4 points of module, 5 points of module and module, Control driving cylinder A (i.e. 13 points of module), driving cylinder B (i.e. 14 points of module), oscillating cylinder A (i.e. 15 points of module), oscillating cylinder B (i.e. moulds 16 points of block) output logic.Control module passes through pressure sensor (i.e. 10 points of inputs of 9 points of module or module), adjustment simultaneously The output logic of displacement valves (i.e. 18 points of module).In addition, when control module obtains the signal (i.e. 7 points of module) of arm support by-passing valve Afterwards, it is powered by 17 output currents of module to arm support by-passing valve, now, ability is manually or remote control arm support is acted, to coordinate Different places are pumped into, the data communication and rotating speed that engine speed can be carried out by CAN communication mouthful are controlled.

By taking concrete arm support pumper as an example, main oil pump is divided into two kinds of variable pump and constant displacement pump, and automatically controlled variable pump passes through electric current The mechanical structure of controlling pump, and then the displacement size of pump is determined, the discharge capacity of pump and the rotating speed of pump together decide on the output flow of pump, So as to determine the operating efficiency of concrete arm support pumper.In the course of the work, actual consumption is exactly bottom to concrete arm support pumper Diesel oil in disk fuel tank, and the Expenditure Levels of amount of fuel (i.e. diesel oil) directly determine the cost constructed, so oil consumption situation is Client uses the most concerned problem of pump truck.Master cylinder reversing control system in existing pump truck electric control system be through Cross after calculating and experiment, the maximum per minute that can be reached according to main oil pump peak power commutates number of times to be defined as the 10th row Amount.Commutation number of times per minute is N, and master cylinder volume can be calculated by master cylinder cylinder diameter, master cylinder bar footpath, master cylinder stroke, Main oil pump maximum stream flow=main oil pump maximum pump discharge * main oil pump maximum speeds, so when the model of master cylinder and main oil pump is determined When, maximum stream flow=master cylinder volume * N (Max) of main oil pump in 1 minute, wherein, N (Max) is maximum commutation time per minute Number.

Conventional oil pump is because supply of material reason has three kinds of combinations, respectively：

The first：The main oil pump that 2 discharge capacities are 125ml/r (every turn of oil pump pumps out 125ml oil mass).

Second：The main oil pump that 2 discharge capacities are 180ml/r (every turn of oil pump pumps out 180ml oil mass).

The third：1 discharge capacity is the main oil pump that 125ml/r and 1 discharge capacity is 180ml/r.

By taking the third combination as an example, that is, exemplified by the main oil pump for calculating 2 125ml/r discharge capacities, by calculating N (Max) =24 beats/min, be the commutation that maximum commutation number of times per minute is set to highest gear (i.e. 10 gears) in the prior art Number of times, ensuing 9 gear to 1 gear commutation number of times per minute is determined according to per minute successively decrease successively 2 times, that is, Commutation times N=24 beat/min of 10 gears, the commutation number of times of following 9 gear to 1 gear respectively be 22 beats/min, 20 beats/min, 18 beats/min, 16 beats/min, 14 beats/min, 12 beats/min, 10 beats/min, 8 beats/min and 6 beats/min Clock.

Although the control strategy of above-mentioned commutation number of times ensure that the maximum utilizing status to oil pump power in the prior art, but It is not consider whether the unit commutation number of times that each gear is distributed is most rational, so as to cause consumption and the list of fuel oil Whether the relation of position commutation number of times is best match and controls whether it is most efficient to oil pump capacity, therefore causes as follows As a result：

Although the 1, rate of pumping is fast, bring oil consumption be substantially improved with unnecessary waste, wherein, based on rate of pumping Oil cylinder commutation number of times per minute, commutation number of times per minute is bigger, and rate of pumping is faster.

2nd, fuel consumption is low, but rate of pumping is but very slow, influences the need for constructing and progress.

The rotating speed unreasonable distribution of discharge capacity and main oil pump for main oil pump in the prior art causes the problem of oil consumption is higher, Not yet propose effective solution at present.

The content of the invention

The embodiments of the invention provide one kind pumping control method and device, to solve the discharge capacity of main oil pump in the prior art Cause the higher technical problem of oil consumption with the rotating speed unreasonable distribution of main oil pump.

One side according to embodiments of the present invention pumps control method there is provided one kind, and the pumping control method should For pumping equipment, pumping control method includes：The outlet pressure of main oil pump in the pumping equipment is detected, target outlet is obtained Pressure；The unit commutation time of master cylinder in the pumping equipment is determined according to the target outlet pressure and preset pressure threshold value Number；Obtain the current rotating speed of engine in the pumping equipment；Calculated according to the current rotating speed and unit commutation number of times The current discharge capacity of the main oil pump；Obtain the current loads rate of the engine；According to the current loads rate and default load Rate threshold value determines the rotating speed of target of the engine and the target discharge capacity of the main oil pump；And be by the current adjustment of rotational speed The rotating speed of target, and the current discharge capacity is adjusted to the target discharge capacity.

Further, the main oil pump includes the first main oil pump and the second main oil pump, wherein, detect in the pumping equipment The outlet pressure of main oil pump, obtaining target outlet pressure includes：First outlet pressure and second outlet pressure are detected, wherein, institute The outlet pressure that first outlet pressure is first main oil pump is stated, the second outlet pressure goes out for second main oil pump Mouth pressure；And go out outlet pressure larger in the first outlet pressure and the second outlet pressure as the target Mouth pressure.

Further, in the pumping equipment is detected main oil pump outlet pressure, before obtaining target outlet pressure, institute Stating pumping control method also includes：Calculate respectively under n different default outlet pressures, the master cylinder is different in correspondence M oil effect ratio during unit commutation number of times, wherein, m>n；And compared according to the m oil effects, filter out q individual effective described Unit commutation number of times, wherein, the effective unit commutation number of times is for satisfaction according to the oily effect than the screening conditions of determination Unit commutation number of times, n<q<m；And be respectively each effective unit commutation number of times matching gear, wherein, it is different described The gear that unit commutation number of times is matched is differed.

Further, master cylinder in the pumping equipment is determined according to the target outlet pressure and preset pressure threshold value Unit commutation number of times includes：Judge whether the target outlet pressure is more than preset pressure threshold value；Judging that the target goes out In the case that mouth pressure is more than the preset pressure threshold value, the unit commutation number of times is determined according to the target outlet pressure； And in the case where judging that the target outlet pressure is less than or equal to the preset pressure threshold value, determined according to target gear The unit commutation number of times, wherein, the target gear is the selected gear.

Further, in the case where judging that the target outlet pressure exceedes the preset pressure threshold value, according to institute State target outlet pressure and determine that the unit commutation number of times includes：According to formula P₁+ N=M calculates the unit commutation number of times, its In, P₁For the corresponding numerical value of the target outlet pressure, N is the corresponding numerical value of unit commutation number of times, and M is default value model Enclose.

Further, in the case where judging that the target outlet pressure is less than or equal to the preset pressure threshold value, root Determine that the rotating speed of target of the engine and the target of the main oil pump are arranged according to the current loads rate and default rate of load condensate threshold value Amount includes：Judge whether the current loads rate is less than default rate of load condensate threshold value；Judging the current loads rate less than institute In the case of stating default rate of load condensate threshold value, the required power of the engine is determined；According to the required power, the hair is calculated Rotating speed needed for the first of motivation；Rotating speed calculates the preferable discharge capacity of the main oil pump according to needed for described first；Obtain the main oil The maximum pump discharge of pump；Judge whether the maximum pump discharge is more than the preferable discharge capacity；Judging the maximum pump discharge less than institute In the case of stating preferable discharge capacity, the engine is calculated according to the current discharge capacity, the current rotating speed and the maximum pump discharge Second needed for rotating speed, and determine the maximum pump discharge for the target discharge capacity and determine described second needed for rotating speed be the mesh Mark rotating speed；And in the case where judging that the maximum pump discharge is more than the preferable discharge capacity, it is mesh to determine the preferable discharge capacity Rotating speed needed for marking discharge capacity and determining described first is the rotating speed of target.

Further, in the case where judging that the target outlet pressure is more than the preset pressure threshold value, the list Position commutation number of times includes the first unit commutation number of times, the second unit commutation number of times and the 3rd unit commutation number of times, and described first is single Position commutation number of times, which is more than second unit commutation number of times and is more than the 3rd unit, to commutate number of times, and the current loads rate includes First current loads rate, the second current loads rate and the 3rd current loads rate, the first current loads rate are more than described second Current loads rate is more than the 3rd current loads rate, wherein：Calculated according to the current rotating speed and unit commutation number of times The current discharge capacity of the main oil pump includes：The main oil pump is calculated according to the current rotating speed and first unit commutation number of times The first current discharge capacity；It is current according to the second of the current rotating speed and second unit commutation number of times calculating main oil pump Discharge capacity；And the 3rd current discharge capacity of the main oil pump is calculated according to the current rotating speed and the 3rd unit commutation number of times； The rotating speed of target of the engine and the target of the main oil pump are determined according to the current loads rate and default rate of load condensate threshold value Discharge capacity includes：Judge whether the first current loads rate is less than or equal to the default rate of load condensate threshold value；Judging described In the case that one current loads rate is less than or equal to the default rate of load condensate threshold value, it is target discharge capacity to determine the described first current discharge capacity And determine that the current rotating speed is rotating speed of target；Judging the first current loads rate more than the default rate of load condensate threshold In the case of value, judge whether the second current loads rate is less than or equal to the default rate of load condensate threshold value；Described in judging In the case that second current loads rate is less than or equal to the default rate of load condensate threshold value, determine that the described second current discharge capacity is arranged for target It is rotating speed of target to measure and determine the current rotating speed；Judging the second current loads rate more than the default rate of load condensate In the case of threshold value, judge whether the 3rd current loads rate is less than or equal to the rate of load condensate threshold value；And judging The 3rd current loads rate is stated less than or equal in the case of the default rate of load condensate threshold value, determining that the 3rd current discharge capacity is target Discharge capacity and determine that the current rotating speed is rotating speed of target.

Another aspect according to embodiments of the present invention, additionally provides a kind of pumping control device, the pumping control device Applied to pumping equipment, pumping control device includes：Detection unit, the outlet pressure for detecting main oil pump in the pumping equipment Power, obtains target outlet pressure；First determining unit, for determining institute according to the target outlet pressure and preset pressure threshold value State the unit commutation number of times of master cylinder in pumping equipment；First acquisition unit, for obtaining engine in the pumping equipment Current rotating speed；First computing unit, for calculating the main oil pump according to the current rotating speed and unit commutation number of times Current discharge capacity；Second acquisition unit, the current loads rate for obtaining the engine；Second determining unit, for according to institute State current loads rate and determine the rotating speed of target of the engine and the target discharge capacity of the main oil pump with default rate of load condensate threshold value；With And adjustment unit, for being the rotating speed of target by the current adjustment of rotational speed, and the current discharge capacity is adjusted to described Target discharge capacity.

Further, the main oil pump includes the first main oil pump and the second main oil pump, wherein, the detection unit includes： Detection module, for detecting first outlet pressure and second outlet pressure, wherein, the first outlet pressure is the described first master The outlet pressure of oil pump, the second outlet pressure is the outlet pressure of second main oil pump；And first determining module, use In regarding outlet pressure larger in the first outlet pressure and the second outlet pressure as the target outlet pressure.

Further, the pumping control device also includes：Second computing unit, in the pumping equipment is detected The outlet pressure of main oil pump, obtains before target outlet pressure, calculates respectively under n different default outlet pressures, described M oil effect ratio of the master cylinder when the different unit of correspondence commutates number of times, wherein, m>n；Screening unit, for according to m Oil effect ratio, filters out the individual effective unit commutation number of times of q, wherein, the effective unit commutation number of times is to meet basis The oil effect is than the unit commutation number of times of the screening conditions of determination, n<q<m；And matching unit, for being respectively each effective Unit commutation number of times matching gear, wherein, the gear that different units commutation number of times are matched is differed.

Further, first determining unit includes：First judge module, for judging that the target outlet pressure is It is no to be more than preset pressure threshold value；Second determining module, for judging the target outlet pressure more than the preset pressure In the case of threshold value, the unit commutation number of times is determined according to the target outlet pressure；And the 3rd determining module, for In the case of judging that the target outlet pressure is less than or equal to the preset pressure threshold value, the list is determined according to target gear Position commutation number of times, wherein, the target gear is the selected gear.

Further, second determining module includes：Calculating sub module, for according to formula P₁+ N=M calculates described Unit commutation number of times, wherein, P₁For the corresponding numerical value of the target outlet pressure, N is the corresponding number of unit commutation number of times Value, M is default value scope.

Further, in the case where judging that the target outlet pressure is less than or equal to the preset pressure threshold value, institute Stating the second determining unit includes：Second judge module, for judging whether the current loads rate is less than default rate of load condensate threshold value； 4th determining module, in the case where judging that the current loads rate is less than the default rate of load condensate threshold value, according to institute State current discharge capacity, the current rotating speed, the target outlet pressure and the default rate of load condensate threshold value and determine the engine Required power；First computing module, for according to the required power, calculating rotating speed needed for the first of the engine；Second Computing module, the preferable discharge capacity of the main oil pump is calculated for the rotating speed according to needed for described first；Acquisition module, for obtaining State the maximum pump discharge of main oil pump；3rd judge module, for judging whether the maximum pump discharge is more than the preferable discharge capacity；5th Determining module, in the case where judging that the maximum pump discharge is less than the preferable discharge capacity, according to the current discharge capacity, institute State current rotating speed and the maximum pump discharge calculates rotating speed needed for the second of the engine, and determine that the maximum pump discharge is described Rotating speed needed for target discharge capacity and determination described second is the rotating speed of target；And the 6th determining module, for judging Maximum pump discharge is stated more than in the case of the preferable discharge capacity, determining that the preferable discharge capacity is target discharge capacity and determination first institute It is the rotating speed of target to need rotating speed.

Further, in the case where judging that the target outlet pressure is more than the preset pressure threshold value, the list Position commutation number of times includes the first unit commutation number of times, the second unit commutation number of times and the 3rd unit commutation number of times, and described first is single Position commutation number of times, which is more than second unit commutation number of times and is more than the 3rd unit, to commutate number of times, and the current loads rate includes First current loads rate, the second current loads rate and the 3rd current loads rate, the first current loads rate are more than described second Current loads rate is more than the 3rd current loads rate, wherein：First computing unit includes：3rd computing module, is used for The first current discharge capacity of the main oil pump is calculated according to the current rotating speed and first unit commutation number of times；Worked as according to described Preceding rotating speed and second unit commutation number of times calculate the second current discharge capacity of the main oil pump；And according to the current rotating speed The 3rd current discharge capacity of the main oil pump is calculated with the 3rd unit commutation number of times；Second determining unit includes：4th Judge module, for judging whether the first current loads rate is less than or equal to the default rate of load condensate threshold value；7th determines mould Block, in the case where judging that the first current loads rate is less than or equal to the default rate of load condensate threshold value, it is determined that described First current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target；5th judge module, for judging Go out the first current loads rate more than in the case of the default rate of load condensate threshold value, whether judge the second current loads rate Less than or equal to the default rate of load condensate threshold value；8th determining module, for judging that the second current loads rate is less than In the case of the default rate of load condensate threshold value, determine that the described second current discharge capacity works as forward described in target discharge capacity and determination Speed is rotating speed of target；6th judge module, for judging the second current loads rate more than the default rate of load condensate threshold In the case of value, judge whether the 3rd current loads rate is less than or equal to the rate of load condensate threshold value；And the 9th determining module, For in the case where judging that the 3rd current loads rate is less than or equal to the default rate of load condensate threshold value, determining the described 3rd Current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target.

In embodiments of the present invention, using the outlet pressure for detecting main oil pump in the pumping equipment, target outlet is obtained Pressure；The unit commutation time of master cylinder in the pumping equipment is determined according to the target outlet pressure and preset pressure threshold value Number；Obtain the current rotating speed of engine in the pumping equipment；Calculated according to the current rotating speed and unit commutation number of times The current discharge capacity of the main oil pump；Obtain the current loads rate of the engine；According to the current loads rate and default load Rate threshold value determines the rotating speed of target of the engine and the target discharge capacity of the main oil pump；And be by the current adjustment of rotational speed The rotating speed of target, and the current discharge capacity is adjusted to the mode of the target discharge capacity.By the outlet for detecting main oil pump Pressure, and then according to the outlet pressure detected and the magnitude relationship of preset pressure threshold value, it may be determined that mutually fitted with outlet pressure The unit commutation number of times for the suitable master cylinder answered, is compared to and does not consider that the outlet pressure of main oil pump is determined that in the prior art The mode of master cylinder unit commutation number of times, improves the reasonability for determining master cylinder unit commutation number of times.According to main oil pump Outlet pressure determined after the unit commutation number of times of suitable master cylinder, so can according to the rate of load condensate situation of engine, point Not Tiao Jie main oil pump displacement size and the rotating speed size of engine, because the rotating speed of main oil pump and the rotating speed of engine are related, So the rotating speed by adjusting engine, can indirectly adjust the rotating speed of main oil pump, reached the discharge capacity that improves main oil pump and The rotating speed of main oil pump distributes rational purpose, solves the rotating speed distribution of the discharge capacity of main oil pump and main oil pump in the prior art not Rationally cause the higher technical problem of oil consumption, and then reach the effect of energy-efficient reduction oil consumption.

Brief description of the drawings

The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：

Fig. 1 is the control principle drawing of concrete mixer electric control system in the prior art；

Fig. 2 is the control schematic diagram of concrete mixer electric control system in the prior art；

Fig. 3 is the flow chart of pumping control method according to embodiments of the present invention；And

Fig. 4 is the schematic diagram of pumping control device according to embodiments of the present invention.

Embodiment

In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model that the present invention is protected Enclose.

It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, " Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product Or the intrinsic other steps of equipment or unit.

Embodiment 1

According to embodiments of the present invention there is provided a kind of embodiment of the method that can be used for implementing the application device embodiment, It should be noted that the step of the flow of accompanying drawing is illustrated can such as one group computer executable instructions department of computer science Performed in system, and, although logical order is shown in flow charts, but in some cases, can be with different from herein Order perform shown or described step.

Control method is pumped there is provided one kind according to embodiments of the present invention, the pumping control that the embodiment of the present invention is provided Method is applied to pumping equipment.Fig. 3 is the flow chart of pumping control method according to embodiments of the present invention, as shown in figure 3, the party Method includes steps S302 to step S314：

Step S302：The outlet pressure of main oil pump in pumping equipment is detected, target outlet pressure is obtained.Specifically, can be with Detect the outlet pressure of main oil pump by the pressure sensor in electric control system in pumping equipment, it is above-mentioned detect go out Mouth pressure is target outlet pressure；Pumping equipment can be concrete arm support pumper or drag pump, can also be vehicle-mounted Pump, can specifically be selected according to demand.In the embodiment of the present invention, the unit of target outlet pressure for MPa.

Step S304：The unit for determining master cylinder in pumping equipment according to target outlet pressure and preset pressure threshold value commutates Number of times.In embodiments of the present invention, the unit commutation number of times of master cylinder refers to master cylinder commutation number of times per minute.Specifically, Preset pressure threshold value can be set according to demand, for example：17Mpa.Because pumping equipment is during pump concrete, if The outlet pressure of main oil pump is higher than 17Mpa, and the rate of load condensate of engine can be caused larger, engine is fallen speed, and then can shadow Ring the stability of engine work, it is therefore desirable to which whether is the stability worked according to engine, namely need according to main oil pump Relation between outlet pressure and 17Mpa, in different ways come determine master cylinder unit commutate number of times.For this area Technical staff for, generally, when the main oil pump outlet pressure of pumping equipment is in the high pressure conditions more than 17Mpa, It is considered as engine and is in unstable working condition.Certainly, this numerical value can be by those skilled in the art according to building ring Border and the difference in place, are voluntarily adjusted.

Step S306：Obtain the current rotating speed of engine in pumping equipment.It should be noted that the user of pumping equipment When using pumping equipment, the rotating speed of engine can be pre-set, the rotating speed of above-mentioned engine is to work as forward in this step Speed.

Step S308：The current discharge capacity of main oil pump is calculated according to current rotating speed and unit commutation number of times.

Specifically, can be according to formulaThe current discharge capacity of main oil pump is calculated, wherein, N is The unit commutation number of times of master cylinder, V1_{Main oil pump}For the current discharge capacity of main oil pump, n_{Main oil pump}For the current rotating speed of main oil pump, V_{Master cylinder}Based on The volume of oil cylinder, can calculate the appearance of master cylinder according to the stroke of the cylinder diameter of master cylinder, the bar footpath of master cylinder and master cylinder Product V_{Master cylinder}, the current rotating speed n1 of main oil pump is determined according to the proportionality coefficient of the current rotating speed of engine and transfer case_{Main oil pump}。

Step S310：Obtain the current loads rate of engine.Specifically, can be in electric control system in pumping equipment Control module directly read from the electronic control unit (being referred to as vehicle-mounted computer) of engine to the current of engine Rate of load condensate, wherein, current loads rate is the ratio between the current power of main oil pump and the current power of engine.

Step S312：The rotating speed of target and main oil pump of engine are determined according to current loads rate and default rate of load condensate threshold value Target discharge capacity.Specifically, presetting rate of load condensate threshold value can be set according to demand, for example：60% or 80%.

Step S314：It is rotating speed of target by current adjustment of rotational speed, and current discharge capacity is adjusted to target discharge capacity.

In embodiments of the present invention, by detecting the outlet pressure of main oil pump, so according to the outlet pressure detected with The magnitude relationship of preset pressure threshold value, it may be determined that the unit commutation number of times for the suitable master cylinder being adapted with outlet pressure, It is compared to and does not consider that the outlet pressure of main oil pump determines that the mode of master cylinder unit commutation number of times in the prior art, improves Determine the reasonability of master cylinder unit commutation number of times.Determining that suitable master cylinder unit commutates according to the outlet pressure of main oil pump After number of times, and then the displacement size of main oil pump and turning for engine according to the rate of load condensate situation of engine, can be adjusted respectively Fast size, because the rotating speed of main oil pump and the rotating speed of engine are related, so the rotating speed by adjusting engine, can be indirect The rotating speed of main oil pump is adjusted, has reached that the rotating speed of the discharge capacity for improving main oil pump and main oil pump distributes rational purpose, has solved The discharge capacity of main oil pump and the rotating speed unreasonable distribution of main oil pump cause the higher technical problem of oil consumption in the prior art, and then reach The effect of energy-efficient reduction oil consumption.

Specifically, main oil pump includes the first main oil pump and the second main oil pump, wherein it is possible to pass through step S3021 and step The outlet pressure of the main oil pump of S3023 detection pumping equipments, obtains target outlet pressure, step S3021 and step S3023 are specific It is as follows：

Step S3021：First outlet pressure and second outlet pressure are detected, wherein, first outlet pressure is the first main oil The outlet pressure of pump, second outlet pressure is the outlet pressure of the second main oil pump, and this step namely detects the first main oil respectively The outlet pressure of the outlet pressure of pump and the second main oil pump.Specifically, electric control system includes two pressure sensors, can To detect the outlet pressure of the first main oil pump and the outlet pressure of the second main oil pump respectively by above-mentioned two pressure sensor.

Step S3023：It regard outlet pressure larger in first outlet pressure and second outlet pressure as target outlet pressure Power.

Preferably, in the outlet pressure for the main oil pump for detecting pumping equipment, obtain before target outlet pressure, the present invention is real Applying the pumping control method that example provided also includes step S1 to step S5, specific as follows：

Step S1：Calculate respectively under n different default outlet pressures, master cylinder is in the different unit commutation time of correspondence M oil effect ratio during number, wherein, m>n.

Specifically, n concrete numerical value and the size of each default outlet pressure are set according to demand, and different Under default outlet pressure, the quantity of the corresponding not commensurate commutation number of times of master cylinder can be different, equally can also be according to demand Set.In embodiments of the present invention, n can be 3, and 3 different default outlet pressures can be 7Mpa, 15Mpa respectively And 25Mpa.

When using the main oil pump that 2 discharge capacities are 180ml/r in pumping equipment, show main oil pump pre- in table 1 If outlet pressure is 7Mpa, master cylinder unit commutation number of times be respectively 5 beats/min, 6 beats/min, 7 beats/min, 8 times/ Minute, 10 beats/min, 11 beats/min, 12 beats/min, 13 beats/min, 15 beats/min, 16 beats/min, 17 beats/min, 18 Beat/min, 19 beats/min, 20 beats/min, 21 beats/min, 22 beats/min, 23 beats/min, 25 beats/min, 26 beats/min Corresponding oil effect ratio when clock, 27 beats/min and 28 beats/min；It is 15Mpa in default outlet pressure that main oil pump is shown in table 2 When, master cylinder unit commutation number of times be respectively 5 beats/min, 6 beats/min, 7 beats/min, 8 beats/min, 9 beats/min, 11 Beat/min, 12 beats/min, 13 beats/min, 14 beats/min, 15 beats/min, 17 beats/min, 18 beats/min, 19 beats/min Corresponding oil effect when clock, 20 beats/min, 21 beats/min, 23 beats/min, 24 beats/min, 25 beats/min and 26 beats/min Than；Main oil pump is shown in table 3 when default outlet pressure is 25Mpa, master cylinder is respectively 5 beats/min in unit commutation number of times Clock, 6 beats/min, 7 beats/min, 8 beats/min, 9 beats/min, 10 beats/min, 11 beats/min, 12 beats/min, 13 beats/min Corresponding oil effect ratio when clock, 14 beats/min, 15 beats/min and 16 beats/min, table 1, table 2 and table 3 are specific as follows：

It should be noted that the unit commutation number of times under above-mentioned each default outlet pressure is from 5 to 30 beats/min In the range of choose, and each unit commutation number of times oil effect than being, according to pumping 60 times, to calculate obtained data, unit The number of times that commutates is bigger, illustrates that rate of pumping is faster, wherein, oil effect ratio=oil consumption increase percentage/speed increase percentage, oil effect It is more optimal than less than 100%.Because oil effect is than being that oil consumption increase percentage and rate of pumping increase the ratio of percentage, therefore can be with Reflect the relation between oil consumption and rate of pumping.

Step S3：According to m oil effect ratio, q effective unit commutation number of times are filtered out, wherein, effective unit commutation Number of times imitates the unit commutation number of times of the screening conditions than determination, n to meet according to oil<q<m.In embodiments of the present invention, due to Pumping equipment typically has 10 gears, so q is 10.Specifically, screening conditions and the effective unit commutation screened The quantity of number of times can be set according to demand.

In embodiments of the present invention, screening conditions are two, and one is that speed is improved, the unit commutation that oil consumption is reduced on the contrary Number of times, another is unit commutation number of times of the average oil effect ratio less than 70%, is changed while meeting above-mentioned two screening conditions unit It is effective unit commutation number of times to number of times, considers each unit in table 1, table 2 and table 3 according to above-mentioned screening conditions and change Relation between number of times and corresponding oil effect ratio, meets the effective unit commutation number of times difference of above-mentioned screening conditions It is：5 beats/min, 6 beats/min, 8 beats/min, 11 beats/min, 14 beats/min, 17 beats/min, 19 beats/min, 21 beats/min Clock, 24 beats/min and 27 beats/min.

Step S5：Respectively each effective unit commutation number of times matching gear, wherein, not commensurate's commutation number of times institute The gear matched somebody with somebody is differed.Specifically, unit commutation number of times and gear are one-to-one, and a unit commutation number of times matches one Gear, number of times that unit can commutate is according to ascending being correspondingly arranged from low to high with gear respectively.When what is screened When unit commutation number of times quantity is less than numbers of gear steps, it is possible to reduce numbers of gear steps is so that a pair of unit commutation number of times and gear 1 Should.When the unit commutation number of times quantity screened is more than numbers of gear steps, wherein oil effect can be commutated than preferably unit Number of times is ranked up according to order of quality, and number of times that then unit consistent with numbers of gear steps come above commutates is as final The effective unit commutation number of times filtered out, and matched with gear one-to-one corresponding.

Shown in table 4 when using 2 discharge capacities for 180ml/r main oil pump in pumping equipment, each effective unit The matching relationship of commutation number of times and each gear.

Table 4

It should be noted that when using 2 discharge capacities for 125ml/r main oil pump in pumping equipment or The situation for the main oil pump that 1 discharge capacity is 180ml/r for 125ml/r main oil pump and 1 discharge capacity is used in pumping equipment, still may be used To determine the matching relationship of gear and unit commutation number of times by performing step S1 to step S5.

In embodiments of the present invention, by according to oil effect than determining the corresponding optimal commutation number of times of each gear, And then most efficient rate of pumping is may insure, so as to reach raising fuel utilization ratio, reduce the effect of fuel oil oil consumption.

Preferably, it can be realized by step S3041 to step S3045 according to target outlet pressure and preset pressure threshold value The unit commutation number of times of the master cylinder of pumping equipment is determined, step S3041 is specific as follows to step S3045：

Step S3041：Judge whether target outlet pressure is more than preset pressure threshold value, this step namely comparison object goes out Mouth pressure and the magnitude relationship of preset pressure threshold value.

Step S3043：In the case where judging that target outlet pressure is more than preset pressure threshold value, according to target outlet pressure Power determines unit commutation number of times.

Step S3045：In the case where judging that target outlet pressure is less than or equal to preset pressure threshold value, according to target shift Position determines unit commutation number of times, wherein, target gear is selected gear.For example：Used in pumping equipment 2 discharge capacities for During 180ml/r main oil pump, if selected gear is that 4 grades, i.e. target gear are 4 grades, then the unit commutation of master cylinder Number of times is then 11 beats/min.

In embodiments of the present invention, by the outlet pressure according to main oil pump and the magnitude relationship of preset pressure threshold value, point The unit commutation number of times of master cylinder is not determined according to different modes, has reached and has improved the rational of determination unit commutation number of times Effect.

Specifically, in the case where judging that target outlet pressure is more than preset pressure threshold value, formula P can be passed through₁+N =M unit of accounts commutation number of times, wherein, P₁For the corresponding numerical value of target outlet pressure, N is the corresponding number of unit commutation number of times Value, M is default value scope.M value can be set according to demand, in embodiments of the present invention, M span for 38 to 40, if M span is excessive, when main oil pump has inherently located lower work at a higher pressure, if master cylinder is also needed Higher unit commutation number of times is carried out, engine can be made to fall speed, that is, the actual unit commutation number of times of master cylinder does not reach root The unit commutation number of times calculated according to above-mentioned span M, the stability that engine can be influenceed to work.For example：When target goes out When mouth pressure is 21Mpa, unit commutation times N can be 17 beats/min, 18 beats/min or 19 beats/min.

Preferably, in embodiments of the present invention, feelings of the target outlet pressure less than or equal to preset pressure threshold value are being judged Under condition, determine that the rotating speed of target of engine and the target discharge capacity of main oil pump include according to current loads rate and default rate of load condensate threshold value Step S312-01 is specific as follows to step S312-15：

Step S312-01：Judge whether current loads rate is less than default rate of load condensate threshold value, this step namely will currently be born Lotus rate is compared with default rate of load condensate threshold value.Specifically, presetting the size of rate of load condensate threshold value can be set according to demand, example Such as：60%.

Step S312-03：In the case where judging that current loads rate is less than default rate of load condensate threshold value, according to when front row Amount, current rotating speed, target outlet pressure and default rate of load condensate threshold value determine the required power of engine.In the embodiment of the present invention really The process for determining the required power of engine is as follows：Need first to be calculated according to current discharge capacity, current rotating speed and target outlet pressure gauge The current power of main oil pump, current power and default rate of load condensate threshold calculations further according to main oil pump go out the required work(of engine Rate.

If the current loads rate of engine is less than default rate of load condensate threshold value, illustrate the utilization to the current power of engine Rate is relatively low, because current loads rate is the ratio between the current power of main oil pump and the current power of engine, it is possible to The current loads rate of engine is improved by reducing the current power of engine, to improve the profit to the current power of engine With rate.The current power of engine is according to the corresponding engine test bench characteristic of the current rotating speed of current rotating speed and engine of engine Just it can determine that, and because the external characteristics of engine is relevant with the current rotating speed of engine, it is possible to think that engine works as forward The size of speed determines the size of engine current power, that is, changes the current rotating speed of engine and will change the power of engine. For example：When the current rotating speed of engine is 1000r/min, it may be determined that the current power of engine is 20kw.

Specifically, can be according to formulaThe current power of main oil pump is calculated, wherein, P_PumpFor The current power of main oil pump, k is the proportionality coefficient of transfer case, n1_EngineFor the current rotating speed of engine, V1_{Main oil pump}For main oil pump Current discharge capacity, P_TargetFor target outlet pressure.For example：Target outlet pressure P_TargetFor 10MPa, the current rotating speed n1 of engine_Engine For 1000r/min, the proportionality coefficient k of transfer case is 6, the current discharge capacity V1 of main oil pump_{Main oil pump}For 10, then the current work(of main oil pump Rate

Continue to illustrate using the citing in the above, the current negative of engine is understood in the citing of the above Lotus rate is 50%, and the current power of main oil pump is 10kw, it is assumed that default rate of load condensate threshold value is 60%, then the required work(of engine Rate=10kw/60%=16.6kw.

Step S312-05：According to required power, rotating speed needed for the first of engine is calculated.Specifically, when the work(of engine When rate and engine test bench characteristic are determined, corresponding engine speed can also be obtained by inquiring about engine power data.Continue Illustrated using the example above, when the power of engine is changed into 16.6kw, the rotating speed for determining engine is 500r/min.

Step S312-07：Rotating speed calculates the preferable discharge capacity of main oil pump according to needed for first.Specifically, formula can be passed throughThe preferable discharge capacity of main oil pump is calculated, wherein, n2_EngineThe rotating speed for needed for the first of engine, V2_{Main oil pump} For the preferable discharge capacity of main oil pump.It should be noted that calculating the preferable discharge capacity V2 of main oil pump_{Main oil pump}When, the current work(of main oil pump Rate P_Pump, transfer case proportionality coefficient k and target outlet pressure P_TargetAll it is constant, so the rotating speed and main oil pump of engine What discharge capacity was inversely proportional varies.Continue to illustrate using the example above, the preferable discharge capacity of main oil pump

Step S312-09：Obtain the maximum pump discharge of main oil pump.Specifically, the maximum pump discharge of main oil pump is according to the master of use The displacement size of oil pump is determined, when two main oil pumps of use are 125ml/r main oil pump, then the maximum row of main oil pump Measure as 125ml；When two main oil pumps of use are 180ml/r main oil pump, then the maximum pump discharge of main oil pump is 180ml；When two main oil pumps one of use are 125ml/r main oil pumps, when another is 180ml/r main oil pump, then The maximum pump discharge of main oil pump is 125ml.

Step S312-11：Judge whether maximum pump discharge is more than preferable discharge capacity, this step namely compares maximum pump discharge and reason Think the magnitude relationship of discharge capacity.

Step S312-13：In the case where judging that maximum pump discharge is less than preferable discharge capacity, according to current discharge capacity, work as forward Speed and maximum pump discharge calculate rotating speed needed for the second of engine, and determine that maximum pump discharge turns for target discharge capacity and needed for determining second Speed is rotating speed of target.

Specifically, can be according to formula kn1_EngineV1_{Main oil pump}=kn3_EngineV3_{Main oil pump}Rotating speed needed for the second of engine is calculated, Wherein, n3_EngineThe rotating speed for needed for the second of engine, V3_{Main oil pump}For the maximum pump discharge of main oil pump.

That is, in the case where judging that maximum pump discharge is less than preferable discharge capacity, regarding the maximum pump discharge of main oil pump as main oil The target discharge capacity of pump, at the same using rotating speed needed for the second of engine as engine rotating speed of target.

Step S312-15：In the case where judging that maximum pump discharge is more than preferable discharge capacity, it is determined that preferable discharge capacity is arranged for target Rotating speed needed for amount and determination first is rotating speed of target, it is, in the case where judging that maximum pump discharge is more than preferable discharge capacity, will The preferable discharge capacity of main oil pump as main oil pump target discharge capacity, while using rotating speed needed for the first of engine as engine mesh Mark rotating speed.

It should be noted that in the case where target outlet pressure is less than or equal to preset pressure threshold value, if engine Current loads rate is more than or equal to default rate of load condensate threshold value, then current rotating speed and the current discharge capacity of main oil pump not to engine are carried out Adjustment.

In embodiments of the present invention, in the case of by being less than or equal to preset pressure threshold value in target outlet pressure, if The current loads rate of engine is less than default rate of load condensate threshold value, then the rotating speed of the discharge capacity to main oil pump and engine is adjusted, Because the rotating speed of main oil pump and the rotating speed of engine are related, so namely realizing to the discharge capacity of main oil pump and turning for main oil pump The adjustment of speed, has reached the utilization rate for improving fuel oil, reduces discharge, increases the effect of pumping equipment service life.

Specifically, in embodiments of the present invention, in the case where judging that target outlet pressure is more than preset pressure threshold value, Unit commutation number of times includes the first unit commutation number of times, the second unit commutation number of times and the 3rd unit commutation number of times, the first unit The number of times that commutates is more than the second unit commutation number of times and is more than the 3rd unit commutation number of times, and current loads rate includes the first current loads Rate, the second current loads rate and the 3rd current loads rate, the first current loads rate are more than the second current loads rate and worked as more than the 3rd Preload rate, wherein：

Step S3081 is included according to the current discharge capacity that current rotating speed and unit commutation number of times calculate main oil pump, it is specific as follows：

Step S3081：The first current discharge capacity of main oil pump is calculated according to current rotating speed and the first unit commutation number of times；According to Current rotating speed and the second unit commutation number of times calculate the second current discharge capacity of main oil pump；And according to current rotating speed and the 3rd unit The number of times that commutates calculates the 3rd current discharge capacity of main oil pump.Specifically, the first current discharge capacity, the second current discharge capacity are calculated in this step Process with the 3rd current discharge capacity is with the mistake for calculating current discharge capacity in above-described embodiment according to current rotating speed and unit commutation number of times Cheng Xiangtong, is not repeated explanation herein.It should be noted that when the current rotating speed of engine is constant, the current discharge capacity of main oil pump When different, the rate of load condensate of engine is different.

Now, the rotating speed of target of engine and the target of main oil pump are determined according to current loads rate and default rate of load condensate threshold value Discharge capacity includes step S312-17 to step S312-27, specific as follows：

Step S312-17：Judge whether the first current loads rate is less than or equal to default rate of load condensate threshold value, that is, comparing the The size of one current loads rate and default rate of load condensate threshold value.Specifically, the first current loads rate is the first current work(of main oil pump The ratio of rate and current power of the engine in current rotating speed, wherein it is possible to according to target outlet pressure, current rotating speed and the One current discharge capacity determines the first current power of main oil pump.In embodiments of the present invention, presetting rate of load condensate threshold value equally can be with Set according to demand, such as 80%.

Step S312-19：In the case where judging that the first current loads rate is less than or equal to default rate of load condensate threshold value, it is determined that First current discharge capacity is target discharge capacity and determines that current rotating speed is rotating speed of target, that is, judging the first current loads rate In the case of less than or equal to default rate of load condensate threshold value, using the first current discharge capacity as target discharge capacity, and current rotating speed is regard as mesh Mark rotating speed.

Step S312-21：In the case where judging that the first current loads rate is more than default rate of load condensate threshold value, second is judged Whether current loads rate is less than or equal to default rate of load condensate threshold value.Specifically, the second current loads rate is the second current of main oil pump The ratio of power and current power of the engine in current rotating speed, wherein it is possible to according to target outlet pressure, current rotating speed and Second current discharge capacity determines the second current power of main oil pump.

Step S312-23：In the case where judging that the second current loads rate is less than or equal to default rate of load condensate threshold value, it is determined that Second current discharge capacity is target discharge capacity and determines that current rotating speed is rotating speed of target, that is, judging the second current loads rate In the case of less than or equal to default rate of load condensate threshold value, using the second current discharge capacity as target discharge capacity, and current rotating speed is regard as mesh Mark rotating speed.

Step S312-25：In the case where judging that the second current loads rate is more than default rate of load condensate threshold value, the 3rd is judged Whether current loads rate is less than or equal to rate of load condensate threshold value.Specifically, the 3rd current loads rate is the 3rd current power of main oil pump With the ratio of current power of the engine in current rotating speed, wherein it is possible to according to target outlet pressure, current rotating speed and the 3rd Current discharge capacity determines the 3rd current power of main oil pump.

Step S312-27：In the case where judging that the 3rd current loads rate is less than or equal to default rate of load condensate threshold value, it is determined that 3rd current discharge capacity is target discharge capacity and determines that current rotating speed is rotating speed of target, that is, judging the 3rd current loads rate In the case of less than or equal to default rate of load condensate threshold value, using the 3rd current discharge capacity as target discharge capacity, and current rotating speed is regard as mesh Mark rotating speed.

It should be noted that in the case where target outlet pressure is more than preset pressure threshold value, if the first of engine Current loads rate is less than or equal to default rate of load condensate threshold value, then current rotating speed not to engine and the first current discharge capacity of main oil pump It is adjusted, that is, continuing to control engine to run according to current rotating speed all the time, control main oil pump is all the time according to first when front row Measure work.

In embodiments of the present invention, in the case of by being more than preset pressure threshold value in target outlet pressure, and in hair In the case that the current loads rate of motivation is more than default rate of load condensate threshold value, the discharge capacity to main oil pump is adjusted, and reduces main oil Unit that cylinder is operated commutation number of times, it is to avoid engine works in the case of excess load, so that influence engine Stability.

It should be noted that for foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of Combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement because According to the present invention, some steps can be carried out sequentially or simultaneously using other.Secondly, those skilled in the art should also know Know, embodiment described in this description belongs to preferred embodiment, involved action and module is not necessarily of the invention It is necessary.

Through the above description of the embodiments, those skilled in the art can be understood that according to above-mentioned implementation The method of example can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but a lot In the case of the former be more preferably embodiment.Understood based on such, technical scheme is substantially in other words to existing The part that technology contributes can be embodied in the form of software product, and the computer software product is stored in a storage In medium (such as ROM/RAM, magnetic disc, CD), including some instructions are to cause a station terminal equipment (can be mobile phone, calculate Machine, server, or network equipment etc.) perform method described in each of the invention embodiment.

Embodiment 2

According to embodiments of the present invention, a kind of pumping control device is additionally provided, the pumping control device is mainly used in performing The pumping control method that the above of the embodiment of the present invention is provided, the pumping control dress provided below the embodiment of the present invention Put and do specific introduction：

Likewise, the pumping control device that the embodiment of the present invention is provided is also applied to pumping equipment.Fig. 4 is according to this hair The schematic diagram of the pumping control device of bright embodiment.As shown in figure 4, the pumping control device includes：Detection unit 10, first is true Order member 20, first acquisition unit 30, the first computing unit 40, second acquisition unit 50, the second determining unit 60 and adjustment are single Member 70, wherein：

Detection unit 10 is used for the outlet pressure for detecting main oil pump in pumping equipment, obtains target outlet pressure.Specifically, The outlet pressure of main oil pump can be detected by the pressure sensor in electric control system in pumping equipment, it is above-mentioned to detect Outlet pressure be target outlet pressure；Pumping equipment can be concrete arm support pumper or drag pump, can also be Vehicle loaded pump, can specifically be selected according to demand.In the embodiment of the present invention, the unit of target outlet pressure for MPa.

First determining unit 20 is used to determine master cylinder in pumping equipment according to target outlet pressure and preset pressure threshold value Unit commutation number of times.In embodiments of the present invention, the unit commutation number of times of master cylinder refers to master cylinder commutation per minute time Number.Specifically, preset pressure threshold value can be set according to demand, for example：17Mpa.Because pumping equipment is in pump concrete During, if the outlet pressure of main oil pump is higher than 17Mpa, the rate of load condensate of engine can be caused larger, easily fall engine Speed, and then the stability that engine can be influenceed to work, it is therefore desirable to which whether is the stability worked according to engine, namely needs root According to the relation between the outlet pressure and 17Mpa of main oil pump, determine that the unit of master cylinder commutates number of times in different ways. For a person skilled in the art, generally, the main oil pump outlet pressure of pumping equipment is in the height more than 17Mpa During pressure condition, it is considered as engine and is in unstable working condition.Certainly, this numerical value can be by those skilled in the art's root According to working environment and the difference in place, voluntarily it is adjusted.

First acquisition unit 30 is used for the current rotating speed for obtaining engine in pumping equipment.It is noted that pumping equipment User when using pumping equipment, the rotating speed of engine can be pre-set, during the rotating speed of above-mentioned engine is this unit Current rotating speed.

First computing unit 40 is used for the current discharge capacity that main oil pump is calculated according to current rotating speed and unit commutation number of times.

Second acquisition unit 50 is used for the current loads rate for obtaining engine.Specifically, can be in pumping equipment electrically Control module in control system is directly read to hair from the electronic control unit (being referred to as vehicle-mounted computer) of engine The current loads rate of motivation, wherein, current loads rate be the current power of main oil pump and the current power of engine and between Ratio.

Second determining unit 60 is used for the rotating speed of target that engine is determined according to current loads rate and default rate of load condensate threshold value With the target discharge capacity of main oil pump.Specifically, presetting rate of load condensate threshold value can be set according to demand, for example：60% or 80%.

It is rotating speed of target that adjustment unit 70, which is used for current adjustment of rotational speed, and current discharge capacity is adjusted into target discharge capacity.

In embodiments of the present invention, by detecting the outlet pressure of main oil pump, so according to the outlet pressure detected with The magnitude relationship of preset pressure threshold value, it may be determined that the unit commutation number of times for the suitable master cylinder being adapted with outlet pressure, It is compared to and does not consider that the outlet pressure of main oil pump determines that the mode of master cylinder unit commutation number of times in the prior art, improves Determine the reasonability of master cylinder unit commutation number of times.Determining that the unit of suitable master cylinder is changed according to the outlet pressure of main oil pump To after number of times, and then the displacement size and engine of main oil pump according to the rate of load condensate situation of engine, can be adjusted respectively Rotating speed size, because the rotating speed of main oil pump and the rotating speed of engine are related, so the rotating speed by adjusting engine, can be indirect Regulation main oil pump rotating speed, reached that the rotating speed of the discharge capacity for improving main oil pump and main oil pump distributes rational purpose, solved In the prior art the discharge capacity of main oil pump and the rotating speed unreasonable distribution of main oil pump cause the higher technical problem of oil consumption, Jin Erda The effect of energy-efficient reduction oil consumption is arrived.

Specifically, main oil pump include the first main oil pump and the second main oil pump, wherein, detection unit 10 include detection module and First determining module, wherein：

Detection module is used to detect first outlet pressure and second outlet pressure, wherein, first outlet pressure is the first master The outlet pressure of oil pump, second outlet pressure is the outlet pressure of the second main oil pump, and this module namely lead respectively by detection first The outlet pressure of the outlet pressure of oil pump and the second main oil pump.Specifically, electric control system includes two pressure sensors, The outlet pressure of the first main oil pump and the outlet pressure of the second main oil pump can be detected respectively by above-mentioned two pressure sensor.

First determining module is used to regard outlet pressure larger in first outlet pressure and second outlet pressure as target Outlet pressure.

Preferably, the pumping control device that the embodiment of the present invention is provided also include the second computing unit, screening unit and Matching unit, wherein：

Second computing unit be used for detection pumping equipment in main oil pump outlet pressure, obtain target outlet pressure it Before, calculate respectively under n different default outlet pressures, m oil of the master cylinder when the different unit of correspondence commutates number of times Effect ratio, wherein, m>n.

When using the main oil pump that 2 discharge capacities are 180ml/r in pumping equipment, show main oil pump pre- in table 1 If outlet pressure is 7Mpa, master cylinder unit commutation number of times be respectively 5 beats/min, 6 beats/min, 7 beats/min, 8 times/ Minute, 10 beats/min, 11 beats/min, 12 beats/min, 13 beats/min, 15 beats/min, 16 beats/min, 17 beats/min, 18 Beat/min, 19 beats/min, 20 beats/min, 21 beats/min, 22 beats/min, 23 beats/min, 25 beats/min, 26 beats/min Corresponding oil effect ratio when clock, 27 beats/min and 28 beats/min；It is 15Mpa in default outlet pressure that main oil pump is shown in table 2 When, master cylinder unit commutation number of times be respectively 5 beats/min, 6 beats/min, 7 beats/min, 8 beats/min, 9 beats/min, 11 Beat/min, 12 beats/min, 13 beats/min, 14 beats/min, 15 beats/min, 17 beats/min, 18 beats/min, 19 beats/min Corresponding oil effect when clock, 20 beats/min, 21 beats/min, 23 beats/min, 24 beats/min, 25 beats/min and 26 beats/min Than；Main oil pump is shown in table 3 when default outlet pressure is 25Mpa, master cylinder is respectively 5 beats/min in unit commutation number of times Clock, 6 beats/min, 7 beats/min, 8 beats/min, 9 beats/min, 10 beats/min, 11 beats/min, 12 beats/min, 13 beats/min Corresponding oil effect ratio when clock, 14 beats/min, 15 beats/min and 16 beats/min.

Screening unit is used to be compared according to m oil effect, filters out q effective unit commutation number of times, wherein, effective unit Commutation number of times imitates the unit commutation number of times of the screening conditions than determination, n to meet according to oil<q<m.In embodiments of the present invention, Because pumping equipment typically has 10 gears, so q is 10.Specifically, screening conditions and the effective unit screened The quantity of commutation number of times can be set according to demand.

Matching unit is used to be respectively each effective unit commutation number of times matching gear, wherein, not commensurate's commutation time Several matched gears are differed.Specifically, unit commutation number of times and gear are one-to-one, a unit commutation number of times With a gear, number of times that unit can commutate is according to ascending being correspondingly arranged from low to high with gear respectively.Work as screening When unit commutation number of times quantity out is less than numbers of gear steps, it is possible to reduce numbers of gear steps is so that unit commutation number of times and gear one One correspondence., can be by wherein oil effect than preferably unit when the unit screened commutates C several quantity more than numbers of gear steps Commutation number of times is ranked up according to order of quality, then the unit consistent with numbers of gear steps come above is commutated number of times as Effective unit commutation number of times is finally filtered out, and is matched with gear one-to-one corresponding.

It should be noted that when using 2 discharge capacities for 125ml/r main oil pump in pumping equipment or The situation for the main oil pump that 1 discharge capacity is 180ml/r for 125ml/r main oil pump and 1 discharge capacity is used in pumping equipment, still may be used With by calling the second computing unit, screening unit and matching unit to determine the matching relationship of gear and unit commutation number of times.

Preferably, the first determining unit 20 includes the first judge module, the second determining module and the 3rd determining module, its In：

First judge module is used to judge whether target outlet pressure is more than preset pressure threshold value, and this module namely compares Target outlet pressure and the magnitude relationship of preset pressure threshold value.

Second determining module is used in the case where judging that target outlet pressure is more than preset pressure threshold value, according to target Outlet pressure determines unit commutation number of times；And

3rd determining module is used in the case where judging that target outlet pressure is less than or equal to preset pressure threshold value, according to Target gear determines unit commutation number of times, wherein, target gear is selected gear.For example：2 are used in pumping equipment When discharge capacity is 180ml/r main oil pump, if selected gear is that 4 grades, i.e. target gear are 4 grades, then the list of master cylinder Commutation number of times in position is then 11 beats/min.

Specifically, the second determining module includes calculating sub module, and calculating sub module is used for according to formula P₁+ N=M calculates single Position commutation number of times, wherein, P₁For the corresponding numerical value of target outlet pressure, N is the corresponding numerical value of unit commutation number of times, and M is default Number range.M value can be set according to demand, in embodiments of the present invention, and M span is 38 to 40, if M Span is excessive, when main oil pump has inherently located lower work at a higher pressure, if master cylinder also need to carry out it is higher Unit commutation number of times, can make engine fall speed, that is, the actual unit commutation number of times of master cylinder does not reach according to above-mentioned value The unit commutation number of times that scope M is calculated, the stability that engine can be influenceed to work.For example：When target outlet pressure is During 21Mpa, unit commutation times N can be 17 beats/min, 18 beats/min or 19 beats/min.

Preferably, in the case where judging that target outlet pressure is less than or equal to preset pressure threshold value, the second determining unit 60 judge mould including the second judge module, the 4th determining module, the first computing module, the second computing module, acquisition module, the 3rd Block, the 5th determining module and the 6th determining module, wherein：

Second judge module is used to judge whether current loads rate is less than default rate of load condensate threshold value, and this module namely ought Preload rate is compared with default rate of load condensate threshold value.Specifically, presetting the size of rate of load condensate threshold value can be set according to demand, For example：60%.

4th determining module is used in the case where judging that current loads rate is less than default rate of load condensate threshold value, according to current Discharge capacity, current rotating speed, target outlet pressure and default rate of load condensate threshold value determine the required power of engine.In the embodiment of the present invention Determine that the process of the required power of engine is as follows：Need first according to current discharge capacity, current rotating speed and target outlet calculation of pressure Go out the current power of main oil pump, the current power and default rate of load condensate threshold calculations further according to main oil pump go out the required work(of engine Rate.

First computing module is used to, according to required power, calculate rotating speed needed for the first of engine.Specifically, engine is worked as Power and engine test bench characteristic when determining, corresponding engine speed can also be obtained by inquiring about engine power data. Continue to illustrate using the example above, when the power of engine is changed into 16.6kw, the rotating speed for determining engine is 500r/ min。

Second computing module is used for the preferable discharge capacity that the rotating speed according to needed for first calculates main oil pump.Specifically, it can pass through FormulaThe preferable discharge capacity of main oil pump is calculated, wherein, n2_EngineThe rotating speed for needed for the first of engine, V2_{Main oil pump}For the preferable discharge capacity of main oil pump.It should be noted that calculating the preferable discharge capacity V2 of main oil pump_{Main oil pump}When, main oil pump work as Preceding power P_Pump, transfer case proportionality coefficient k and target outlet pressure P_TargetAll it is constant, so the rotating speed of engine and main oil What the discharge capacity of pump was inversely proportional varies.Continue to illustrate using the example above, the preferable discharge capacity of main oil pump

Acquisition module is used for the maximum pump discharge for obtaining main oil pump.Specifically, the maximum pump discharge of main oil pump is according to the master of use The displacement size of oil pump is determined, when two main oil pumps of use are 125ml/r main oil pump, then the maximum row of main oil pump Measure as 125ml；When two main oil pumps of use are 180ml/r main oil pump, then the maximum pump discharge of main oil pump is 180ml；When two main oil pumps one of use are 125ml/r main oil pumps, when another is 180ml/r main oil pump, then The maximum pump discharge of main oil pump is 125ml.

3rd judge module is used to judge whether maximum pump discharge is more than preferable discharge capacity, and this module namely compares maximum pump discharge With the magnitude relationship of preferable discharge capacity.

5th determining module is used in the case where judging that maximum pump discharge is less than preferable discharge capacity, according to current discharge capacity, when Preceding rotating speed and maximum pump discharge calculate rotating speed needed for the second of engine, and determine maximum pump discharge for target discharge capacity and determine the second institute It is rotating speed of target to need rotating speed.

6th determining module is used in the case where judging that maximum pump discharge is more than preferable discharge capacity, it is determined that preferable discharge capacity is mesh Rotating speed needed for marking discharge capacity and determining first is rotating speed of target, it is, judging situation of the maximum pump discharge more than preferable discharge capacity Under, using the preferable discharge capacity of main oil pump as main oil pump target discharge capacity, while using rotating speed needed for the first of engine as starting The rotating speed of target of machine.

In embodiments of the present invention, in the case of by being less than preset pressure threshold value in target outlet pressure, if started The current loads rate of machine is less than default rate of load condensate threshold value, then the rotating speed of the discharge capacity to main oil pump and engine is adjusted, due to The rotating speed of main oil pump is related to the rotating speed of engine, so namely realizing to the rotating speed of the discharge capacity of main oil pump and main oil pump Adjustment, has reached the utilization rate for improving fuel oil, reduces discharge, increases the effect of pumping equipment service life.

First computing unit 40 includes the 3rd computing module, and the 3rd computing module is used for according to current rotating speed and the first unit The number of times that commutates calculates the first current discharge capacity of main oil pump；The of main oil pump is calculated according to current rotating speed and the second unit commutation number of times Two current discharge capacities；And the 3rd current discharge capacity of main oil pump is calculated according to current rotating speed and the 3rd unit commutation number of times.Specifically, The process that the first current discharge capacity, the second current discharge capacity and the 3rd current discharge capacity are calculated in this unit is worked as with basis in above-described embodiment Preceding rotating speed is identical with the process that unit commutation number of times calculates current discharge capacity, and explanation is not repeated herein.It should be noted that when hair The current rotating speed of motivation is constant, when the current discharge capacity of main oil pump is different, and the rate of load condensate of engine is different.

Second determining unit 60 includes the 4th judge module, the 7th determining module, the 5th judge module, the 8th determination mould Block, the 6th judge module and the 9th determining module, wherein：

4th judge module is used to judge whether the first current loads rate is less than or equal to default rate of load condensate threshold value, that is, than Compared with the first current loads rate and the size of default rate of load condensate threshold value.Specifically, the first current loads rate is worked as the first of main oil pump Preceding power and the ratio of current power of the engine in current rotating speed, wherein it is possible to according to target outlet pressure, current rotating speed The first current power of main oil pump is determined with the first current discharge capacity.In embodiments of the present invention, rate of load condensate threshold value is preset same It can set according to demand, such as 80%.

7th determining module is used in the case where judging that the first current loads rate is less than or equal to default rate of load condensate threshold value, Determine that the first current discharge capacity is target discharge capacity and determines that current rotating speed is rotating speed of target, that is, judging that first is current negative In the case that lotus rate is less than or equal to default rate of load condensate threshold value, using the first current discharge capacity as target discharge capacity, and current rotating speed is made For rotating speed of target.

5th judge module is used to, in the case where judging that the first current loads rate is more than default rate of load condensate threshold value, judge Whether the second current loads rate is less than or equal to default rate of load condensate threshold value.Specifically, the second current loads rate is the second of main oil pump The ratio of current power and current power of the engine in current rotating speed, wherein it is possible to according to target outlet pressure, work as forward Speed and the second current discharge capacity determine the second current power of main oil pump.

8th determining module is used in the case where judging that the second current loads rate is less than or equal to default rate of load condensate threshold value, Determine that the second current discharge capacity is target discharge capacity and determines that current rotating speed is rotating speed of target, that is, judging that second is current negative In the case that lotus rate is less than or equal to default rate of load condensate threshold value, using the second current discharge capacity as target discharge capacity, and current rotating speed is made For rotating speed of target.

6th judge module is used to, in the case where judging that the second current loads rate is more than default rate of load condensate threshold value, judge Whether the 3rd current loads rate is less than or equal to rate of load condensate threshold value.Specifically, the 3rd current loads rate is the 3rd current of main oil pump The ratio of power and current power of the engine in current rotating speed, wherein it is possible to according to target outlet pressure, current rotating speed and 3rd current discharge capacity determines the 3rd current power of main oil pump.

9th determining module is used in the case where judging that the 3rd current loads rate is less than or equal to default rate of load condensate threshold value, Determine that the 3rd current discharge capacity is target discharge capacity and determines that current rotating speed is rotating speed of target, that is, judging that the 3rd is current negative In the case that lotus rate is less than or equal to default rate of load condensate threshold value, using the 3rd current discharge capacity as target discharge capacity, and current rotating speed is made For rotating speed of target.

As can be seen from the above description, the present invention solves the discharge capacity of main oil pump in the prior art and main oil pump Rotating speed unreasonable distribution causes the higher technical problem of oil consumption, and then has reached the effect of energy-efficient reduction oil consumption.

The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.

In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment The part of detailed description, may refer to the associated description of other embodiment.

, can be by others side in several embodiments provided herein, it should be understood that disclosed client Formula is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, only one Kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or Another system is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed it is mutual it Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces Connect, can be electrical or other forms.

The unit illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.

If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer Equipment (can for personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes Medium.

Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should It is considered as protection scope of the present invention.

Claims

1. one kind pumping control method, it is characterised in that the pumping control method is applied to pumping equipment, the pumping control Method includes：

The outlet pressure of main oil pump in the pumping equipment is detected, target outlet pressure is obtained；

The unit commutation number of times of master cylinder in the pumping equipment is determined according to the target outlet pressure and preset pressure threshold value；

Obtain the current rotating speed of engine in the pumping equipment；

The current discharge capacity of the main oil pump is calculated according to the current rotating speed and unit commutation number of times；

Obtain the current loads rate of the engine；

The rotating speed of target and the main oil pump of the engine are determined according to the current loads rate and default rate of load condensate threshold value Target discharge capacity；And

It is the rotating speed of target by the current adjustment of rotational speed, and the current discharge capacity is adjusted to the target discharge capacity.

2. pumping control method according to claim 1, it is characterised in that the main oil pump includes the first main oil pump and the Two main oil pumps, wherein, the outlet pressure of main oil pump in the pumping equipment is detected, obtaining target outlet pressure includes：

First outlet pressure and second outlet pressure are detected, wherein, the first outlet pressure goes out for first main oil pump Mouth pressure, the second outlet pressure is the outlet pressure of second main oil pump；And

It regard outlet pressure larger in the first outlet pressure and the second outlet pressure as the target outlet pressure.

3. pumping control method according to claim 1, it is characterised in that the main oil pump in the pumping equipment is detected Outlet pressure, is obtained before target outlet pressure, the pumping control method also includes：

Calculate respectively under n different default outlet pressures, m of the master cylinder when the different unit of correspondence commutates number of times Individual oil effect ratio, wherein, m>n；

According to the m oil effect ratios, the q effective unit commutation number of times are filtered out, wherein, the effective unit commutation Number of times imitates the unit commutation number of times of the screening conditions than determination, n to meet according to the oil<q<m；And

Respectively each effective unit commutation number of times matching gear, wherein, the different unit commutation number of times are matched Gear differ.

4. pumping control method according to claim 3, it is characterised in that according to the target outlet pressure and default pressure Force threshold determines that the unit commutation number of times of master cylinder in the pumping equipment includes：

Judge whether the target outlet pressure is more than preset pressure threshold value；

In the case where judging that the target outlet pressure is more than the preset pressure threshold value, according to the target outlet pressure Determine the unit commutation number of times；And

In the case where judging that the target outlet pressure is less than or equal to the preset pressure threshold value, determined according to target gear The unit commutation number of times, wherein, the target gear is the selected gear.

5. pumping control method according to claim 4, it is characterised in that judging that the target outlet pressure exceedes In the case of the preset pressure threshold value, determine that the unit commutation number of times includes according to the target outlet pressure：

According to formula P₁+ N=M calculates the unit commutation number of times, wherein, P₁For the corresponding numerical value of the target outlet pressure, N For the corresponding numerical value of unit commutation number of times, M is default value scope.

6. pumping control method according to claim 4, it is characterised in that judging that the target outlet pressure is less than In the case of equal to the preset pressure threshold value, the engine is determined according to the current loads rate and default rate of load condensate threshold value Rotating speed of target and the target discharge capacity of the main oil pump include：

Judge whether the current loads rate is less than default rate of load condensate threshold value；

In the case where judging that the current loads rate is less than the default rate of load condensate threshold value, according to the current discharge capacity, institute State the required power that current rotating speed, the target outlet pressure and the default rate of load condensate threshold value determine the engine；

According to the required power, rotating speed needed for the first of the engine is calculated；

Rotating speed calculates the preferable discharge capacity of the main oil pump according to needed for described first；

Obtain the maximum pump discharge of the main oil pump；

Judge whether the maximum pump discharge is more than the preferable discharge capacity；

In the case where judging that the maximum pump discharge is less than the preferable discharge capacity, according to the current discharge capacity, described work as forward Fast and described maximum pump discharge calculates rotating speed needed for the second of the engine, and determines that the maximum pump discharge is the target discharge capacity And rotating speed needed for determining described second is the rotating speed of target；And

In the case where judging that the maximum pump discharge is more than the preferable discharge capacity, determine the preferable discharge capacity for target discharge capacity and Rotating speed needed for determining described first is the rotating speed of target.

7. pumping control method according to claim 4, it is characterised in that judging that the target outlet pressure is more than In the case of the preset pressure threshold value, the unit commutation number of times includes the first unit commutation number of times, the commutation time of the second unit Number and the 3rd unit commutation number of times, the first unit commutation number of times are more than second unit commutation number of times and are more than the described 3rd Unit commutation number of times, the current loads rate includes the first current loads rate, the second current loads rate and the 3rd current loads rate, The first current loads rate is more than the second current loads rate and is more than the 3rd current loads rate, wherein：

Included according to the current discharge capacity that the current rotating speed and unit commutation number of times calculate the main oil pump：Worked as according to described Preceding rotating speed and first unit commutation number of times calculate the first current discharge capacity of the main oil pump；According to the current rotating speed and institute State the second current discharge capacity that the second unit commutation number of times calculates the main oil pump；And according to the current rotating speed and the described 3rd Unit commutation number of times calculates the 3rd current discharge capacity of the main oil pump；

The rotating speed of target and the main oil pump of the engine are determined according to the current loads rate and default rate of load condensate threshold value Target discharge capacity includes：

Judge whether the first current loads rate is less than or equal to the default rate of load condensate threshold value；

In the case where judging that the first current loads rate is less than or equal to the default rate of load condensate threshold value, described first is determined Current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target；

In the case where judging that the first current loads rate is more than the default rate of load condensate threshold value, judge that described second is current Whether rate of load condensate is less than or equal to the default rate of load condensate threshold value；

In the case where judging that the second current loads rate is less than or equal to the default rate of load condensate threshold value, described second is determined Current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target；

In the case where judging that the second current loads rate is more than the default rate of load condensate threshold value, judge that the described 3rd is current Whether rate of load condensate is less than or equal to the rate of load condensate threshold value；And

In the case where judging that the 3rd current loads rate is less than or equal to the default rate of load condensate threshold value, the described 3rd is determined Current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target.

8. a kind of pumping control device, it is characterised in that the pumping control device is applied to pumping equipment, the pumping control Device includes：

Detection unit, the outlet pressure for detecting main oil pump in the pumping equipment, obtains target outlet pressure；

First determining unit, for determining main oil in the pumping equipment according to the target outlet pressure and preset pressure threshold value The unit commutation number of times of cylinder；

First acquisition unit, the current rotating speed for obtaining engine in the pumping equipment；

First computing unit, it is front-seat for calculating working as the main oil pump according to the current rotating speed and unit commutation number of times Amount；

Second acquisition unit, the current loads rate for obtaining the engine；

Second determining unit, for determining that the target of the engine turns according to the current loads rate and default rate of load condensate threshold value The target discharge capacity of fast and described main oil pump；And

Adjustment unit, for being the rotating speed of target by the current adjustment of rotational speed, and by the current discharge capacity is adjusted to institute State target discharge capacity.

9. pumping control device according to claim 8, it is characterised in that the main oil pump includes the first main oil pump and the Two main oil pumps, wherein, the detection unit includes：

Detection module, for detecting first outlet pressure and second outlet pressure, wherein, the first outlet pressure is described the The outlet pressure of one main oil pump, the second outlet pressure is the outlet pressure of second main oil pump；And

First determining module, for using outlet pressure larger in the first outlet pressure and the second outlet pressure as The target outlet pressure.

10. pumping control device according to claim 8, it is characterised in that the pumping control device also includes：

Second computing unit, for the outlet pressure of the main oil pump in the pumping equipment is detected, obtain target outlet pressure it Before, calculate respectively under n different default outlet pressures, m of the master cylinder when the different unit of correspondence commutates number of times Individual oil effect ratio, wherein, m>n；

Screening unit, for comparing according to the m oil effects, filters out the q effective unit commutation number of times, wherein, effectively The unit commutation number of times for meet according to it is described oil effect than determination screening conditions unit commutate number of times, n<q<m；And

Matching unit, for being respectively each effective unit commutation number of times matching gear, wherein, the different units are changed The gear matched to number of times is differed.

11. pumping control device according to claim 10, it is characterised in that first determining unit includes：

First judge module, for judging whether the target outlet pressure is more than preset pressure threshold value；

Second determining module, for judge the target outlet pressure be more than the preset pressure threshold value in the case of, root The unit commutation number of times is determined according to the target outlet pressure；And

3rd determining module, for judging situation of the target outlet pressure less than or equal to the preset pressure threshold value Under, the unit commutation number of times is determined according to target gear, wherein, the target gear is the selected gear.

12. pumping control device according to claim 11, it is characterised in that second determining module includes：

Calculating sub module, for according to formula P₁+ N=M calculates the unit commutation number of times, wherein, P₁For the target outlet pressure The corresponding numerical value of power, N is the corresponding numerical value of unit commutation number of times, and M is default value scope.

13. pumping control device according to claim 11, it is characterised in that judging that the target outlet pressure is small In the case of equal to the preset pressure threshold value, second determining unit includes：

Second judge module, for judging whether the current loads rate is less than default rate of load condensate threshold value；

4th determining module, for judge the current loads rate be less than the default rate of load condensate threshold value in the case of, root Start according to described in the current discharge capacity, the current rotating speed, the target outlet pressure and the default rate of load condensate threshold value determination The required power of machine；

First computing module, for according to the required power, calculating rotating speed needed for the first of the engine；

Second computing module, the preferable discharge capacity of the main oil pump is calculated for the rotating speed according to needed for described first；

Acquisition module, the maximum pump discharge for obtaining the main oil pump；

3rd judge module, for judging whether the maximum pump discharge is more than the preferable discharge capacity；

5th determining module, in the case where judging that the maximum pump discharge is less than the preferable discharge capacity, being worked as according to described Preceding discharge capacity, the current rotating speed and the maximum pump discharge calculate rotating speed needed for the second of the engine, and determine the maximum Discharge capacity rotating speed for needed for the target discharge capacity and determination described second is the rotating speed of target；And

6th determining module, in the case where judging that the maximum pump discharge is more than the preferable discharge capacity, determining the reason Think that discharge capacity rotating speed for needed for target discharge capacity and determination described first is the rotating speed of target.

14. pumping control device according to claim 11, it is characterised in that judging that the target outlet pressure is big In the case of the preset pressure threshold value, the unit commutation number of times includes the first unit commutation number of times, the commutation of the second unit Number of times and the 3rd unit commutation number of times, first unit commutation number of times are more than second unit commutation number of times and are more than described the Three units commutation number of times, the current loads rate includes the first current loads rate, the second current loads rate and the 3rd current loads Rate, the first current loads rate is more than the second current loads rate and is more than the 3rd current loads rate, wherein：

First computing unit includes：3rd computing module, for according to the current rotating speed and first unit commutation Number of times calculates the first current discharge capacity of the main oil pump；Institute is calculated according to the current rotating speed and second unit commutation number of times State the second current discharge capacity of main oil pump；And the main oil is calculated according to the current rotating speed and the 3rd unit commutation number of times 3rd current discharge capacity of pump；

Second determining unit includes：

4th judge module, for judging whether the first current loads rate is less than or equal to the default rate of load condensate threshold value；

7th determining module, for judging feelings of the first current loads rate less than or equal to the default rate of load condensate threshold value Under condition, determine that the described first current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target；

5th judge module, for judging situation of the first current loads rate more than the default rate of load condensate threshold value Under, judge whether the second current loads rate is less than or equal to the default rate of load condensate threshold value；

8th determining module, for judging feelings of the second current loads rate less than or equal to the default rate of load condensate threshold value Under condition, determine that the described second current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target；

6th judge module, for judging situation of the second current loads rate more than the default rate of load condensate threshold value Under, judge whether the 3rd current loads rate is less than or equal to the rate of load condensate threshold value；And

9th determining module, for judging feelings of the 3rd current loads rate less than or equal to the default rate of load condensate threshold value Under condition, determine that the 3rd current discharge capacity is target discharge capacity and determines that the current rotating speed is rotating speed of target.