CN103321272A - Hydraulic excavator power control method in plateau mode - Google Patents
Hydraulic excavator power control method in plateau mode Download PDFInfo
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- CN103321272A CN103321272A CN2013102642889A CN201310264288A CN103321272A CN 103321272 A CN103321272 A CN 103321272A CN 2013102642889 A CN2013102642889 A CN 2013102642889A CN 201310264288 A CN201310264288 A CN 201310264288A CN 103321272 A CN103321272 A CN 103321272A
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Abstract
The invention relates to a hydraulic excavator power control method in a plateau mode. According to actual operating conditions of an engine, power matching of an excavator system is achieved by adjusting proportional relief valve current of a hydraulic master pump through an electric control system display, and accordingly the problems of slow action and low operating efficiency, especially low speed gear (at which the engine produces black smoke and even flames out), of an excavator are solved. Settings of an electric control system accord to operating time of the engine, the current of a proportional relief valve is automatically reduced and adjusted according to certain proportion. The decreasing amplitude, namely percentage, of the proportional relief valve current can be selected through the display so as to adjust the proportional valve current, namely pump power, so that the pump power is matched with the engine, while the problems such as high stall, black smoke, low efficiency and high fuel consumption in the engine are solved.
Description
Technical field
The present invention relates to a kind of Poewr control method, be specifically related to the hydraulic crawler excavator Poewr control method under a kind of altitude mode.
Background technology
Hydraulic crawler excavator is widely used in the building construction foundation dredging and the occasions such as cleaning, urban duct laying, construction of water conservancy works that complete; Namely be a kind of Engineering Work machine that excavates and load and transport, be used for the infrastructures such as city, traffic, water conservancy, mine, river course, be called as " high-efficiency multi-function machinery ".Hydraulic crawler excavator has construction maneuverability, the advantage such as efficient.Along with the development of excavator technology, multifunction, an intelligent trend that has become the excavator development.Yet, when complete machine after height above sea level is greater than 3000 meters because rarefaction of air, engine power has decline in various degree.When the hydraulic crawler excavator normal operation, can cause engine speed to descend larger, when particularly running into heavy load, motor meeting over-emitting black exhaust, even can stop working; Especially at the low speed gear, this phenomenon is more serious.So not only affect operating efficiency, also can increase fuel consume and have potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is according to motor and hydraulic pump self character, namely according to the self character of motor and hydraulic pump, according to motor in different altitude height power slippage and environment temperature to the power slippage, also have hydraulic system to cause the slippage of hydraulic power because of system wear (according to working time or length of service), regulate pump power by electrical control system, make it power and be complementary, and then the solution motor falls speed, over-emitting black exhaust even flame-out problem.
In order to solve the problems of the technologies described above, technical scheme of the present invention has provided the hydraulic crawler excavator Poewr control method under a kind of altitude mode, the whole electric hydraulic control system of hydraulic crawler excavator comprises dynamical system, hydraulic system, electrical control system and all types of sensors at least, it is characterized in that, step is:
Power curve according to hydraulic pump, the amplitude that binding engine descends at different altitude height power, the electric current of reduction proportional pressure-reducing valve is complementary the power of motor and hydraulic pump, wherein, the electric current that reduces proportional pressure-reducing valve is realized by in the following dual mode any one:
Mode one, the Vehicular display device that carries by hydraulic crawler excavator arranges match parameter, can be according to different working conditions, adjust the power of pump: the Vehicle Controller of Vehicular display device and electrical control system is by the mutual communication of CAN bus, after the parameter of the electric current of changing the proportional pressure-reducing valve that needs in the interface at Vehicular display device, amended parameter is by the CPU of CAN bus transfer to Vehicle Controller, the CPU of Vehicle Controller receives after the amended parameter after the information, original parameter can be covered automatically, so that the power of motor and hydraulic pump is complementary;
The height above sea level automatic-adjusting pump control electric current that mode two, electrical control system are uploaded according to GPS terminal, according to motor and hydraulic pump power decline situation, reduce in proportion the electric current of proportional pressure-reducing valve and control hydraulic pump power, so that the power of motor and hydraulic pump is complementary.
The present invention is according to the motor practical working situation, adjust the proportional pressure-reducing valve electric current of hydraulic pressure main pump by the electrical control system display, satisfy the power match problem of excavator system, and then solve particularly bottom gear (motor over-emitting black exhaust even flame-out phenomenon) of excavator slow motion, inefficiency.Arrange in the electric-control system can be according to the motor time service time, automatically reduce the electric current of proportional pressure-reducing valve and adjust according to a certain percentage.Also can by display go the range of decrease of selection percentage reducing valve electric current be percentage recently resize ratio valve electric current namely adjust the power of pump, make it to be complementary with motor, thereby the problems such as speed is large so that motor falls, over-emitting black exhaust, efficient are low, fuel oil oil consumption height are solved.
The specific embodiment
For the present invention is become apparent, hereby be described in detail below with preferred embodiment.
As shown in table 1, if the engine maintenance maintenance is undertaken under the correct maintenance condition by maintenance instruction manual, engine operation is not too obvious 2500 meters Altitude Regions self power variation, Altitude Regions more than 3000 meters, engine power has decline such as following table 1 in various degree, 3500,4000,4500,500 meters etc. all can have variation in various degree, just amplitude of variation is also slightly different, the amplitude of the reduction of power clearly, certainly environment temperature is on engine power also certain impact, but under normal temperature conditions, this impact is very little, can ignore, in addition also in various degree variation of the power of corresponding hydraulic pump, but the variation of hydraulic pump power is also very little, if so do not adjust the power words of hydraulic pump this moment, engine power is certainly inadequate, can not satisfy system requirements, and motor falls speed and can increase even stop working, over-emitting black exhaust, the complete machine slow motion, inefficiency, fuel consume is large.Namely this moment motor and hydraulic pump power be not complementary and cause, address this problem, will try every possible means to make motor and hydraulic pump power to be complementary, because the amplitude that engine power descends, so want coupling, only has the power that reduces hydraulic pump, namely reduce the electric current of proportional pressure-reducing valve, power curve according to hydraulic pump, the amplitude that binding engine power descends, give suitable current value of proportional pressure-reducing valve, make system matches, solve motor and fall speed meeting increase even flame-out, over-emitting black exhaust, the complete machine slow motion, inefficiency, the problems such as fuel consume is large.
| ? | 0 | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 55 |
| 0 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.99 | 0.97 | 0.96 |
| 500 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.95 | 0.93 | 0.92 |
| 1000 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.91 | 0.90 | 0.88 |
| 1500 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 0.96 | 0.90 | 0.88 | 0.86 |
| 2000 | 1.00 | 1.00 | 1.00 | 0.93 | 0.91 | 0.90 | 0.88 | 0.87 | 0.86 | 0.86 | 0.86 | 0.85 |
| 2500 | 0.94 | 0.90 | 0.87 | 0.86 | 0.84 | 0.82 | 0.80 | 0.80 | 0.80 | 0.79 | 0.79 | 0.78 |
| 3000 | 0.89 | 0.85 | 0.82 | 0.79 | 0.76 | 0.75 | 0.75 | 0.74 | 0.74 | 0.73 | 0.73 | 0.73 |
| 3500 | 0.83 | 0.80 | 0.77 | 0.74 | 0.71 | 0.70 | 0.69 | 0.69 | 0.68 | 0.68 | 0.68 | 0.67 |
| 4000 | 0.77 | 0.74 | 0.72 | 0.69 | 0.66 | 0.64 | 0.64 | 0.64 | 0.63 | 0.63 | 0.62 | 0.62 |
| 4500 | 0.72 | 0.69 | 0.66 | 0.64 | 0.61 | 0.59 | 0.59 | 0.58 | 0.58 | 0.58 | 0.58 | 0.57 |
| 5000 | 0.66 | 0.63 | 0.61 | 0.58 | 0.56 | 0.54 | 0.53 | 0.53 | 0.53 | 0.53 | 0.53 | 0.52 |
Table 1: the ratio that height above sea level and environment temperature and corresponding engine power descend
(in upper table, transverse axis is environment temperature ℃, and the longitudinal axis is height above sea level m)
Method by reducing the proportioning valve electric current can control pump power, realizes the dual mode that has of this function:
1, by Vehicular display device match parameter is set, can according to different working conditions, adjusts the power of hydraulic pump.Display and Vehicle Controller pass through the mutual communication of CAN bus, after the parameter that change needs in display interfaces, amended parameter is by the CPU of CAN bus transfer to Vehicle Controller, Vehicle Controller CUP receives after the amended parameter after the information, can automatically cover original parameter.This method is on existing electric-control system, hydraulic system basis, finishes by the control program of change control device, display.Benefit is that the user can change the job parameter that is complementary with machine according to the real work situation of machine.As, when motor because maintenance is improper or because the reasons of oil product etc. cause the power of motor to descend in advance namely when motor is in the work of 2500 meters of height above sea level under normal circumstances power just begin to descend, may begin to descend 2300 meters engine powers now, at this time just can make amendment very easily by display and make a mutually coupling of pump and engine power, guarantee motor stable operation, make the normal operation of complete machine coordination.
2, the height above sea level automatic-adjusting pump control electric current uploaded according to GPS terminal of electric-control system according to motor and hydraulic pump power decline situation, reduces in proportion pump control electric current and controls hydraulic pump power, and motor and hydraulic pump power are complementary.According to the normal situation about descending of the corresponding power of the corresponding height above sea level in the above-mentioned table 1, set corresponding motor in the Vehicle Controller program after 2500 meters, 3000 meters, 3500 meters, 4000 meters, 4500 meters, 5000m etc., the ratio that the proportional pressure-reducing valve current value of control hydraulic pump power descends and then adjustment control pump power are complementary motor and hydraulic pump power.For the two-stage motor, Vehicle Controller CPU is by the GPS module, Real Time Monitoring motor height above sea level of living in, in case the residing height above sea level of motor reaches preset value, Vehicle Controller CUP will carry out the proportional pressure-relief valve control electric current and automatically reduce program, reaches the control purpose of motor and hydraulic pump power match.The method is on existing electric-control system, hydraulic system basis, finishes by the control program of writing Vehicle Controller.But, can only be according to default timing node and the ratio of corresponding decline, the power of step-by-step automatic control coupling motor and hydraulic pump is not revised so flexible by display.In case also have complete machine not assemble the GPS terminal or assembled the GPS terminal, but because signal problem or other failure problems are when causing uploading the complete machine positional information, can only be by the display parameter of making amendment, control the power of hydraulic pump, and then motor and hydraulic pump power are complementary, guarantee motor stable operation, the normal operation of complete machine coordination.
A kind of hydraulic crawler excavator power matching method provided by the invention also can be used for the similar places such as other engineering machinery such as loader, building machinery, load-carrying vehicle except being used for hydraulic crawler excavator, motor is special practicability and effectiveness when surpassing 3000 meters work of height above sea level.
Claims (1)
1. the hydraulic crawler excavator Poewr control method under the altitude mode, the whole electric hydraulic control system of hydraulic crawler excavator comprises dynamical system, hydraulic system, electrical control system and all types of sensors at least, it is characterized in that, step is:
Power curve according to hydraulic pump, the amplitude that binding engine descends at different altitude height power, the electric current of reduction proportional pressure-reducing valve is complementary the power of motor and hydraulic pump, wherein, the electric current that reduces proportional pressure-reducing valve is realized by in the following dual mode any one:
Mode one, the Vehicular display device that carries by hydraulic crawler excavator arranges match parameter, can be according to different working conditions, adjust the power of pump: the Vehicle Controller of Vehicular display device and electrical control system is by the mutual communication of CAN bus, after the parameter of the electric current of changing the proportional pressure-reducing valve that needs in the interface at Vehicular display device, amended parameter is by the CPU of CAN bus transfer to Vehicle Controller, the CPU of Vehicle Controller receives after the amended parameter after the information, original parameter can be covered automatically, so that the power of motor and hydraulic pump is complementary;
The height above sea level automatic-adjusting pump control electric current that mode two, electrical control system are uploaded according to GPS terminal, according to motor and hydraulic pump power decline situation, reduce in proportion the electric current of proportional pressure-reducing valve and control hydraulic pump power, so that the power of motor and hydraulic pump is complementary.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035881A (en) * | 2014-06-17 | 2014-09-10 | 徐州重型机械有限公司 | Vehicle parameter modifying method and vehicle controller |
| CN105604117A (en) * | 2014-11-20 | 2016-05-25 | 斗山工程机械（中国）有限公司 | An automatic control method and device for the rotating speed of an engine of an excavator and an excavator |
| CN106314200A (en) * | 2016-09-26 | 2017-01-11 | 株洲中车时代电气股份有限公司 | Self-adaptation control method of mining electric-wheeled self-dumping truck traction system |
| CN108331047A (en) * | 2018-02-05 | 2018-07-27 | 罗弟容 | Power shovel |
| CN108560633A (en) * | 2018-04-20 | 2018-09-21 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic excavator engine and variable pump complex controll online monitoring system |
| CN112081678A (en) * | 2020-08-28 | 2020-12-15 | 山东临工工程机械有限公司 | Smoke intensity control method for small excavator |
| CN115478581A (en) * | 2022-10-27 | 2022-12-16 | 潍柴动力股份有限公司 | Control method and control device of hydraulic system and engineering vehicle |
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| CN102022202A (en) * | 2010-12-03 | 2011-04-20 | 三一重机有限公司 | Power matching control method for excavator at high altitude |
| CN202519735U (en) * | 2012-05-04 | 2012-11-07 | 熔盛机械有限公司 | Plateau self-adaptation control device for excavator |
| CN202831051U (en) * | 2012-09-29 | 2013-03-27 | 徐州徐工挖掘机械有限公司 | Hydraulic pressure excavator plateau power control self-adaption system |
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Patent Citations (4)
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| WO2004099593A1 (en) * | 2003-05-07 | 2004-11-18 | Komatsu Ltd. | Working machine having prime mover control device |
| CN102022202A (en) * | 2010-12-03 | 2011-04-20 | 三一重机有限公司 | Power matching control method for excavator at high altitude |
| CN202519735U (en) * | 2012-05-04 | 2012-11-07 | 熔盛机械有限公司 | Plateau self-adaptation control device for excavator |
| CN202831051U (en) * | 2012-09-29 | 2013-03-27 | 徐州徐工挖掘机械有限公司 | Hydraulic pressure excavator plateau power control self-adaption system |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035881A (en) * | 2014-06-17 | 2014-09-10 | 徐州重型机械有限公司 | Vehicle parameter modifying method and vehicle controller |
| CN105604117A (en) * | 2014-11-20 | 2016-05-25 | 斗山工程机械（中国）有限公司 | An automatic control method and device for the rotating speed of an engine of an excavator and an excavator |
| CN106314200A (en) * | 2016-09-26 | 2017-01-11 | 株洲中车时代电气股份有限公司 | Self-adaptation control method of mining electric-wheeled self-dumping truck traction system |
| CN106314200B (en) * | 2016-09-26 | 2018-09-07 | 株洲中车时代电气股份有限公司 | A kind of mine electric wheel dump trailer system self-adaptation control method |
| CN108331047A (en) * | 2018-02-05 | 2018-07-27 | 罗弟容 | Power shovel |
| CN108560633A (en) * | 2018-04-20 | 2018-09-21 | 徐州徐工挖掘机械有限公司 | A kind of hydraulic excavator engine and variable pump complex controll online monitoring system |
| CN112081678A (en) * | 2020-08-28 | 2020-12-15 | 山东临工工程机械有限公司 | Smoke intensity control method for small excavator |
| CN115478581A (en) * | 2022-10-27 | 2022-12-16 | 潍柴动力股份有限公司 | Control method and control device of hydraulic system and engineering vehicle |
| CN115478581B (en) * | 2022-10-27 | 2024-04-16 | 潍柴动力股份有限公司 | Control method and control device of hydraulic system and engineering vehicle |
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Application publication date: 20130925 |