CN109322753A - A method of over-emitting black exhaust when preventing engineering machinery load from starting - Google Patents
A method of over-emitting black exhaust when preventing engineering machinery load from starting Download PDFInfo
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- CN109322753A CN109322753A CN201811452381.1A CN201811452381A CN109322753A CN 109322753 A CN109322753 A CN 109322753A CN 201811452381 A CN201811452381 A CN 201811452381A CN 109322753 A CN109322753 A CN 109322753A
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- main pump
- hydraulic main
- absorption power
- power
- performance number
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/04—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving pumps
Abstract
The invention discloses it is a kind of prevent engineering machinery load from starting when over-emitting black exhaust method, comprising: first by the absorption power ascension of hydraulic main pump to the first performance number, and judge whether the absorption power of hydraulic main pump needs to decline for the first time；Continue the absorption power ascension of hydraulic main pump to the second performance number, and judges whether the absorption power of hydraulic main pump needs to decline for the second time；Finally by the absorption power ascension of hydraulic main pump to operating power；Wherein, preceding judgement twice is both needed to decide whether to lower the absorption power of hydraulic main pump according to result.The absorption power of hydraulic main pump is risen to its operating power in three times by the present invention, and the absorption power of hydraulic main pump can be adjusted when the absorption power of hydraulic main pump and the power of diesel engine mismatch, reduce load when electric-control diesel engine load starts, the problems such as over-emitting black exhaust, noise and fever are generated when electric-control diesel engine loaded starting is avoided, so that electric-control diesel engine is easier to start up.
Description
Technical field
The present invention relates to technical field of engineering machinery, particularly, be related to one kind prevent engineering machinery load start when emit it is black
The method of cigarette.
Background technique
Horsepower/torque of hydraulic main pump of the engineering machinery such as excavator, horizontal directional drilling machine, rotary drilling rig etc. has been set
It is good, so the absorption power of hydraulic pump will be by the rate fast direct set in the starting that engineering machinery loads suddenly
Line rises to operating power, as shown in Figure 1.But electric-control diesel engine is when accelerating, especially in high altitude localities or low
Under temperature, is influenced to will lead to electric-control diesel engine accelerator by atmospheric density or hydraulic oil viscosity etc. and smoldered seriously, influenced
The normal work of engineering machinery and the service life of complete machine, and diesel engine is smoldered and be can cause environmental pollution.
Chinese patent ZL2011110441939.8 discloses the power control system of a kind of engineering machinery and non-electrical control hydraulic pump
System and control method, the control system include power governor, which connect with executive component, and pass through the respectively
One signal oil passage connected with second signal oil channel non-electrical control hydraulic pump the first signal oil input port and second signal oil it is defeated
Entrance, to control the discharge capacity of non-electrical control hydraulic pump according to load pressure, the second signal oil input port of non-electrical control hydraulic pump and non-
Third signal oil passage is also set up between the delivery outlet of electrical control hydraulic pump, third signal oil passage is provided with electric control valve, the control
The control terminal of valve processed connects a control module.Control method includes: to judge the working condition of engine；According to engine
Working condition controls the non-electrical control hydraulic pump and switches under corresponding operating mode.The control system and control method can
Realize the secondary adjustment of non-electrical control hydraulic pump.
Chinese patent ZL2011103863983 discloses the Load sensing pump of a kind of electric-control motor and volume adjustable hydraulic pump
System, which includes: electric-control motor；Engine controller, for measuring the actual speed of electric-control motor；Movement controller,
For the rotating speed of target of the actual speed and acquisition, actual speed is less than rotating speed of target, and rotating speed of target and practical turn
Difference between speed is greater than the threshold value of setting, then according to the size of difference, exports fine tuning of corresponding size to proportion magnetic valve
Electric current；Proportion magnetic valve tunes up the aperture of itself valve according to by the size of the fine-adjusting current received；Volume adjustable hydraulic pump exists
The lower operation of the power effect of electric-control motor.The system makes the revolving speed of electric-control motor by reducing the load of electric-control motor
Gone up, reduces the oil consumption for adjusting electric-control motor revolving speed by engine controller, while but also volume adjustable hydraulic pump
Stabilization is run on electric-control motor optimal power point.Above two control system does not provide solution diesel engine machinery and adds
Carry the specific solving methods of over-emitting black exhaust when starting.
Summary of the invention
The purpose of the present invention is to provide it is a kind of prevent engineering machinery load start when over-emitting black exhaust method, it is existing to solve
Diesel engine and hydraulic pump power mismatch when journey mechanical load starts, and the problem of lead to diesel engine over-emitting black exhaust.
To achieve the above object, the present invention provides it is a kind of prevent engineering machinery load start when over-emitting black exhaust method, packet
Include following steps:
Step S1: first by the absorption power ascension of hydraulic main pump to the first performance number, and the Hydraulic Main is judged for the first time
Whether the absorption power of pump needs to decline；As the absorption power of the hydraulic main pump maintains the first performance number whithin a period of time
Within, then keep the absorption power of the hydraulic main pump constant；As the absorption power of the hydraulic main pump is held whithin a period of time
It is continuous to be greater than the first performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S2: again by the absorption power ascension of the hydraulic main pump to the second performance number, and the liquid is judged for the second time
Whether the absorption power of pressure main pump needs to decline；As the absorption power of the hydraulic main pump maintains the second function whithin a period of time
Within rate value, then keep the absorption power of the hydraulic main pump constant；If the absorption power of the hydraulic main pump is in a period of time
Inside persistently it is greater than the second performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S3: finally by the absorption power ascension of the hydraulic main pump to operating power；
Wherein, the first performance number is the 50%~70% of the operating power, and second performance number is the work function
The 85%~95% of rate；A period of time in the step S1 and step S2 is 10~30ms.
Further, in the step S1, such as the absorption power of the hydraulic main pump is greater than first performance number, then will
The value of the absorption power decreasing of the hydraulic main pump is the 8%~15% of the operating power；
In the step S2, such as the absorption power of the hydraulic main pump is greater than second performance number, then will be described hydraulic
The value of the absorption power decreasing of main pump is the 20%~25% of the operating power.
Further, first performance number is the 60% of the operating power, and second performance number is the work
The 90% of power.
Further, the starting control system of the engineering machinery includes instrument display, master controller, engine control
Device, electric-control diesel engine, hydraulic main pump and electric proportional control valve, the instrument display and engine controller difference
Be connected with the master controller, the electric-control diesel engine is connected with the engine controller, the hydraulic main pump it is defeated
Enter end to be connected with the output end of the electric-control diesel engine, the electric proportional control valve and the master controller and described hydraulic
Main pump is respectively connected with；During startup, the engine controller monitors the enabling signal of the diesel engine, and by institute
The enabling signal for stating diesel engine feeds back to the master controller, and the master controller is according to the electric-control diesel engine
Starting duration adjusts the size of current of the electric proportional control valve, and the size of the input current of the electric proportional control valve can be adjusted
The climbing speed of the absorption power of the whole hydraulic main pump.
Further, the hydraulic main pump is swash plate plunger pump, and the input terminal of the swash plate plunger pump passes through shaft coupling
Device is connected with the output shaft of the electric-control diesel engine；The oil outlet and swash plate variable regulating mechanism of the electric proportional control valve
Oil inlet be connected, to control the angle of the swash plate.
Further, the engineering machinery is excavator, horizontal directional drilling machine or rotary drilling rig.
Compared with the prior art, the invention has the following advantages:
A kind of method for preventing engineering machinery from loading over-emitting black exhaust when starting of the invention, comprising the following steps: first will be hydraulic
The absorption power ascension of main pump judges whether the absorption power of hydraulic main pump needs to decline to the first performance number, and for the first time；Such as
The absorption power of hydraulic main pump maintains the first performance number whithin a period of time, then keeps the absorption power of hydraulic main pump constant；Such as
The absorption power of hydraulic main pump is persistently greater than the first performance number whithin a period of time, then by the absorption power decreasing of hydraulic main pump；
Continue the absorption power ascension of hydraulic main pump to the second performance number, and judges whether the absorption power of hydraulic main pump needs for the second time
Decline；If the second performance number is less than the absorption power of hydraulic main pump, then by the absorption power decreasing of hydraulic main pump；Such as Hydraulic Main
The absorption power of pump maintains the second performance number whithin a period of time, then keeps the absorption power of hydraulic main pump constant；Such as Hydraulic Main
The absorption power of pump is persistently greater than the second performance number whithin a period of time, then by the absorption power decreasing of hydraulic main pump.The present invention
The output power of engine is risen into its operating power in three times, and repeatedly judges the absorption function of hydraulic main pump in lifting process
Whether the power of rate and electric-control diesel engine matches, and can absorb power and electric-control diesel engine in hydraulic main pump
Power is adjusted the absorption power of hydraulic main pump when mismatching, when avoiding loading starting suddenly, electric-control diesel engine
The problems such as absorbing power to quickly increase in operating power, and electric-control diesel engine caused to generate over-emitting black exhaust, noise and fever,
So that electric-control diesel engine is easier to start up.Method of the invention, improves work efficiency, and reduces the energy of engineering machinery
Consumption.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
The absorption power curve of Fig. 1 hydraulic main pump when being engineering machinery starting in the prior art；
Fig. 2 is the absorption power curve of hydraulic main pump when the engineering machinery load in an embodiment of the present invention starts；
Fig. 3 is the schematic diagram of the starting control system of the engineering machinery in an embodiment of the present invention；
Wherein, 1, instrument display, 2, master controller, 3, engine controller, 4, electric-control diesel engine, 5, Hydraulic Main
Pump, 6, electric proportional control valve.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Referring to fig. 2, a kind of method for preventing engineering machinery from loading over-emitting black exhaust when starting of the invention, comprising the following steps:
Step S1: first by the absorption power ascension of hydraulic main pump 5 to the first performance number, and hydraulic main pump is judged for the first time
Absorb whether power needs to decline；If the absorption power of hydraulic main pump is maintained whithin a period of time within the first performance number, then
Keep the absorption power of hydraulic main pump constant；As the absorption power of hydraulic main pump is persistently greater than the first power whithin a period of time
Value, then by the absorption power decreasing of hydraulic main pump.The absorption power of hydraulic main pump maintains the first performance number whithin a period of time
Within specifically refer to: the absorption power of hydraulic main pump is less than or equal to the suction of the first performance number or hydraulic main pump whithin a period of time
Receive power only at a time or certain several moment be greater than the first performance number.Preferably, the first performance number is operating power
50%~70%.
Step S2: continue the absorption power ascension of hydraulic main pump to the second performance number, and judge hydraulic main pump for the second time
Absorption power whether need to decline；If the absorption power of hydraulic main pump is maintained whithin a period of time within the second performance number,
Then keep the absorption power of hydraulic main pump constant；As the absorption power of hydraulic main pump is persistently greater than the second power whithin a period of time
Value, then by the absorption power decreasing of hydraulic main pump；The absorption power of hydraulic main pump maintains the second performance number whithin a period of time
Within specifically refer to: the absorption power of hydraulic main pump is less than or equal to the suction of the second performance number or hydraulic main pump whithin a period of time
It receives power and is greater than the second performance number at only a certain moment or certain several moment.Preferably, the second performance number is operating power
85%~95%.
Step S3: finally by the absorption power ascension of hydraulic main pump to operating power；
Wherein, a period of time in step S1 and step S2 is 10~30ms.
In the present embodiment, a method of over-emitting black exhaust when preventing engineering machinery load from starting, comprising the following steps:
1, first by the absorption power ascension of hydraulic main pump to the first performance number (the 60% of operating power), and judge for the first time
Whether the absorption power of hydraulic main pump needs to decline；Master controller continuously judges 20ms to the absorption power of hydraulic main pump, hydraulic
The absorption power of main pump is greater than the first performance number 10%, then by the absorption power decreasing of hydraulic main pump to the first performance number.
2, continue the absorption power ascension of hydraulic main pump to the second performance number (the 90% of operating power), and sentence for the second time
Whether the absorption power of hydraulic main pump of breaking needs to decline；Continuously judged by absorption power of the master controller to hydraulic main pump again
20ms, at this point, the absorption power of hydraulic main pump is greater than the second performance number 25%, then by the absorption power decreasing of hydraulic main pump to the
Two performance numbers.
3, the absorption power of hydraulic main pump is finally promoted 10% to operating power again.
In the above method absorption power of hydraulic main pump is risen into its operating power in three times, and repeatedly sentenced in the process
Break the absorption power of hydraulic main pump and whether the power of electric-control diesel engine matches, and can be in the absorption power of hydraulic main pump
When being mismatched with the power of electric-control diesel engine, the absorption power of hydraulic main pump is adjusted, avoids loading starting suddenly
When, the absorption power of electric-control diesel engine is quicklyd increase in operating power, and cause electric-control diesel engine generate over-emitting black exhaust,
The problems such as noise and fever, so that electric-control diesel engine is easier to start up.
As shown in figure 3, the control system of the present embodiment engineering machinery includes instrument display 1, master controller 2, engine
Controller 3, electric-control diesel engine 4, hydraulic main pump 5 and electric proportional control valve 6, instrument display and engine controller difference
It is connected with master controller, electric-control diesel engine is connected with engine controller, and the input terminal and electric control diesel of hydraulic main pump are sent out
The output end of motivation is connected, and electric proportional control valve is respectively connected with master controller and hydraulic main pump.The method flow of the present embodiment:
Diesel engine load start when, by master controller by electric proportional control valve by the absorption power ascension of hydraulic main pump extremely
The 60% of its operating power, at this point, judging whether the absorption power of hydraulic main pump needs to decline for the first time, if desired, then corresponding
Being turned down the absorption power of hydraulic main pump by electric proportional control valve, does not need such as, then keep the absorption power of hydraulic main pump
It is constant；Again by master controller by the absorption power ascension of hydraulic main pump to the 90% of its operating power, at this point, second judges
Whether the absorption power of hydraulic main pump needs to decline, if desired, again by electric proportional control valve to the absorption power of hydraulic main pump
It is adjusted；Last master controller passes through electric proportional control valve for the absorption power ascension of hydraulic main pump to its operating power.
In the present embodiment, hydraulic main pump 5 is swash plate plunger pump, the input terminal of swash plate plunger pump by shaft coupling with
The output shaft of electric-control diesel engine is connected；The oil inlet phase of the oil outlet of electric proportional control valve and swash plate variable regulating mechanism
Even, to control the angle of swash plate.
In the present embodiment, engineering machinery is excavator, horizontal directional drilling machine or rotary drilling rig.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of method for preventing engineering machinery from loading over-emitting black exhaust when starting, which comprises the following steps:
Step S1: first by the absorption power ascension of hydraulic main pump (5) to the first performance number, and the hydraulic main pump is judged for the first time
(5) whether absorption power needs to decline；As the absorption power of the hydraulic main pump maintains the first power whithin a period of time
Within value, then keep the absorption power of the hydraulic main pump constant；As the hydraulic main pump absorption power whithin a period of time
Persistently it is greater than the first performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S2: continuing the absorption power ascension of the hydraulic main pump to the second performance number, and judges for the second time described hydraulic
Whether the absorption power of main pump needs to decline；As the absorption power of the hydraulic main pump maintains the second power whithin a period of time
Within value, then keep the absorption power of the hydraulic main pump constant；As the hydraulic main pump absorption power whithin a period of time
Persistently it is greater than the second performance number, then by the absorption power decreasing of the hydraulic main pump；
Step S3: finally by the absorption power ascension of the hydraulic main pump to operating power；
Wherein, the first performance number is the 50%~70% of the operating power, and second performance number is the operating power
85%~95%；A period of time in the step S1 and step S2 is 10~30ms.
2. the method according to claim 1 for preventing engineering machinery from loading over-emitting black exhaust when starting, which is characterized in that
In the step S1, such as the absorption power of the hydraulic main pump is greater than first performance number, then by the hydraulic main pump
Absorption power decreasing value be the operating power 8%~15%；
In the step S2, such as the absorption power of the hydraulic main pump is greater than second performance number, then by the hydraulic main pump
Absorption power decreasing value be the operating power 20%~25%.
3. the method for over-emitting black exhaust according to claim 2 when preventing engineering machinery load from starting, which is characterized in that described the
One performance number is the 60% of the operating power, and second performance number is the 90% of the operating power.
4. the method according to any one of claim 1-3 for preventing engineering machinery from loading over-emitting black exhaust when starting, feature
Be, the starting control system of the engineering machinery include instrument display (1), master controller (2), engine controller (3),
Electric-control diesel engine (4), hydraulic main pump (5) and electric proportional control valve (6), the instrument display and engine control
Device is connected with the master controller respectively, and the electric-control diesel engine is connected with the engine controller, the Hydraulic Main
The input terminal of pump is connected with the output end of the electric-control diesel engine, the electric proportional control valve and the master controller and institute
Hydraulic main pump is stated to be respectively connected with；During startup, the engine controller monitors the starting of the electric-control diesel engine
Signal, and the enabling signal of the diesel engine is fed back into the master controller, the master controller is according to described automatically controlled
The starting duration of diesel engine adjusts the size of current of the electric proportional control valve, the input current of the electric proportional control valve
Size can adjust the hydraulic main pump absorption power climbing speed.
5. the method according to claim 4 for preventing engineering machinery from loading over-emitting black exhaust when starting, which is characterized in that the liquid
Pressing main pump (5) is swash plate plunger pump, and the input terminal of the swash plate plunger pump is started by shaft coupling and the electric control diesel
The output shaft of machine is connected；The oil outlet of the electric proportional control valve is connected with the oil inlet of swash plate variable regulating mechanism, with control
The angle of the swash plate.
6. the method according to claim 1 for preventing engineering machinery from loading over-emitting black exhaust when starting, which is characterized in that the work
Journey machinery is excavator, horizontal directional drilling machine or rotary drilling rig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452381.1A CN109322753B (en) | 2018-11-30 | 2018-11-30 | Method for preventing black smoke from being emitted during loading and starting of engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811452381.1A CN109322753B (en) | 2018-11-30 | 2018-11-30 | Method for preventing black smoke from being emitted during loading and starting of engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109322753A true CN109322753A (en) | 2019-02-12 |
| CN109322753B CN109322753B (en) | 2021-04-20 |
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ID=65255918
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811452381.1A Active CN109322753B (en) | 2018-11-30 | 2018-11-30 | Method for preventing black smoke from being emitted during loading and starting of engineering machinery |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1531077A2 (en) * | 2003-11-11 | 2005-05-18 | Kanzaki Kokyukoki MFG. Co., Ltd. | Pump unit and working vehicle |
| CN101988434A (en) * | 2009-08-05 | 2011-03-23 | 上海派芬自动控制技术有限公司 | Method and system for controlling limit load |
| 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 |
| KR20150117870A (en) * | 2014-04-11 | 2015-10-21 | 두산인프라코어 주식회사 | Hydraulic pump power control method for a construction machine |
| JP2016160661A (en) * | 2015-03-02 | 2016-09-05 | 日立建機株式会社 | Hybrid type work machine |
-
2018
- 2018-11-30 CN CN201811452381.1A patent/CN109322753B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1531077A2 (en) * | 2003-11-11 | 2005-05-18 | Kanzaki Kokyukoki MFG. Co., Ltd. | Pump unit and working vehicle |
| CN101988434A (en) * | 2009-08-05 | 2011-03-23 | 上海派芬自动控制技术有限公司 | Method and system for controlling limit load |
| 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 |
| KR20150117870A (en) * | 2014-04-11 | 2015-10-21 | 두산인프라코어 주식회사 | Hydraulic pump power control method for a construction machine |
| JP2016160661A (en) * | 2015-03-02 | 2016-09-05 | 日立建機株式会社 | Hybrid type work machine |
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| CN109322753B (en) | 2021-04-20 |
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