CN107620339A - Control system, method and the excavator of engine start - Google Patents
Control system, method and the excavator of engine start Download PDFInfo
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- CN107620339A CN107620339A CN201610548571.8A CN201610548571A CN107620339A CN 107620339 A CN107620339 A CN 107620339A CN 201610548571 A CN201610548571 A CN 201610548571A CN 107620339 A CN107620339 A CN 107620339A
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- engine
- engine start
- main pump
- excavator
- control system
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- Operation Control Of Excavators (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
Abstract
The invention provides a kind of control system of engine start, method and excavator.The control system of engine start includes：First magnetic valve, it is connected respectively with main pump and fuel tank；Controller, control be connected respectively with first magnetic valve and engine；The controller detects the rotating speed of engine in engine start；During the engine start, if the rotating speed of the engine is less than the first setting speed, the controller controls the first magnetic valve to open, the section hydraulic oil in main pump is drained into the fuel tank；Otherwise, the controller controls the first closed electromagnetic valve, maintains the fuel delivery of the main pump to keep constant.The control system of the engine start of the present invention, the problem of engine of excavator under extreme conditions is not allowed to start is can solve the problem that, the adaptability of excavator is enhanced, expands the job area of excavator；It ensure that the reliability and efficiency during excavator use.
Description
Technical field
The present invention relates to technical field of engineering machinery, especially designs a kind of control system of engine start, method and digging
Pick machine.
Background technology
Excavator plays an important role in production as a kind of important engineering machinery.
The operating environment of excavator is sufficiently complex, sometimes even can be very extreme.The excavator of prior art is on plateau
During upper operation, due to air, temperature, height above sea level etc. reason, under original load, engine start can be affected, and cause to send out
It is dynamic not start or difficulty in starting.
The content of the invention
In order to overcome, under the extreme conditions such as plateau, engine is not easy to start or started not excavator in the prior art
Technical problem, the invention provides a kind of control system of engine start, method and excavator.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：
The invention provides a kind of control system of engine start, including：
First magnetic valve, it is connected respectively with main pump and fuel tank；
Controller, it is connected respectively with first magnetic valve and engine；The controller is in engine start, detection
The rotating speed of engine；
During the engine start, if the rotating speed of the engine is less than the first setting speed, the controller control the
One magnetic valve is opened, and the section hydraulic oil in main pump is drained into the fuel tank；Otherwise, the controller controls the first magnetic valve
Close, maintain the fuel delivery of the main pump to keep constant.
Furthermore, it is understood that in the control system of described engine start, first setting speed is 300-500rpm.
Furthermore, it is understood that in the control system of described engine start, in addition to main control valve, connect with the main pump
Connect, the main pump is to the main control valve fuel feeding；The main control valve distributes hydraulic oil to performance part.
Present invention also offers a kind of control method of engine start, including：
Obtain rotating speed during engine start；
If the rotating speed of the engine is less than the first setting speed, the section hydraulic oil in main pump is drained into fuel tank；It is no
Then, the fuel delivery of the main pump is maintained to keep constant.
Furthermore, it is understood that in the control method of described engine start, first setting speed is set according to operating mode
Fixed, first setting speed is 300-500rpm.
Furthermore, it is understood that in the control method of described engine start, in addition to：
During the engine start, main pump operating is driven, and hydraulic oil is supplied into main control valve by the main pump, and by leading
Control valve distributes hydraulic oil to performance part.
Present invention also offers a kind of excavator, it is characterised in that the control system including engine start as described above
System.
The beneficial effects of the invention are as follows：The control system of the engine start of the present invention, can solve the problem that under extreme conditions
The problem of engine of excavator is not allowed to start, enhances the adaptability of excavator, expands the job area of excavator；Protect
The reliability and efficiency during excavator use are demonstrate,proved.
Brief description of the drawings
Fig. 1 represents the principle of compositionality figure of the control system of engine start in the embodiment of the present invention；
Fig. 2 represents the structure chart of the control system of engine start in the embodiment of the present invention.
Embodiment
It is right below in conjunction with the accompanying drawings and the specific embodiments to make the object, technical solutions and advantages of the present invention clearer
The present invention is described in detail.
It is shown referring to Figures 1 and 2, the invention provides a kind of control system of engine start, including：First magnetic valve
4, it is connected respectively with main pump 2 and fuel tank 5；Controller 3 is connected respectively with the first magnetic valve 4 and engine 1；Controller 3 is starting
When machine 1 starts, the rotating speed of engine 1 is detected；When engine 1 starts, if the rotating speed of engine 1 is less than the first setting speed, control
Device 3 processed controls the first magnetic valve 4 to open, and the section hydraulic oil in main pump 2 is drained into fuel tank 5；Otherwise, the control of controller 3 the
One magnetic valve 4 is closed, and maintains the fuel delivery of main pump 2 to keep constant.
Specifically, in the control system of engine start of the invention, including be connected respectively with fuel tank 5 and main pump 2
First magnetic valve 4, the first magnetic valve 4 can drain into the hydraulic oil in main pump 2 in fuel tank 5.Controller 3 is used to detect engine
The rotating speed of engine 1 during 1 startup.When the rotating speed of engine 1 is less than the first setting speed, if engine 1 also keeps original negative
Carry, that is, keep driving main pump 2 to carry out the supply of original oil mass, then engine 1 is not easy to start, or even can not be started.Institute
So that when controller 3 detects that the rotating speed of engine 1 is less than the first setting speed, the first magnetic valve 4 of control is opened, by main pump 2
Section hydraulic oil drain into fuel tank 5, reduce main pump 2 fuel delivery, reduce main pump 2 operating pressure, and then reduce main pump 2 turn round
Square, reach the effect for the power for reducing main pump, so as to reduce the load of engine 1.So equivalent to reducing engine 1
Start difficulty, increase startability.So that engine 1 is easily activated.If controller 3 detects the rotating speed of engine 1 higher than the
During one setting speed, then the fuel delivery of main pump 2 is maintained to keep constant, now engine 1 can normally start.The present invention's starts
The control system that machine starts, the problem of engine of excavator under extreme conditions is not allowed to start is can solve the problem that, enhances excavation
The adaptability of machine, the job area for expanding excavator；It ensure that the reliability and efficiency during excavator use.
Furthermore, it is understood that the first setting speed is 300-500rpm.For different operating modes, it is necessary to the first setting speed
Carry out different settings.If during plateau, minimum speed when engine 1 starts is 500rpm, can not less than 500rpm engines 1
Start, so the first setting speed now is arranged into 500rpm.When engine 1 starts, if controller 3 detects engine
1 rotating speed is less than 500rpm, and the first magnetic valve 4 of control is opened, the section hydraulic oil in main pump 2 is drained into fuel tank 5, reduces master
The fuel delivery of pump 2, reduce the load of engine 1 so that engine 1 easily starts.First setting speed is set, digging can be increased
Dig adaptability of the eedle to different operating modes.
Furthermore, it is understood that the control system of the engine start also includes main control valve 6, be connected with main pump 2, main pump 2 to
The fuel feeding of main control valve 6；Main control valve 6 distributes hydraulic oil to performance part 7.Main pump 2 is to the fuel feeding of main control valve 6 with driveability part 7
Action.Performance part 7 includes rotary motor, big arm cylinder, oil cylinder of small arm and running motor etc..Main control valve 6 receives the confession of main pump 2
Oily driveability part 7, to realize different actions.
Corresponding said system, present invention also offers a kind of control method of engine start, including：Engine is obtained to open
Rotating speed when dynamic；If the rotating speed of the engine is less than the first setting speed, the section hydraulic oil in main pump is drained into fuel tank；
Otherwise, the fuel delivery of the main pump is maintained to keep constant.If rotating speed during engine start is less than the first setting speed, start
Machine is not easy to start.The section hydraulic oil in main pump will be now drained into fuel tank, reduce the fuel delivery of main pump, reduce main pump
Operating pressure, and then main pump moment of torsion is reduced, reach the effect for the power for reducing main pump, so as to reduce the load of engine.This
Sample increases startability equivalent to the startup difficulty for reducing engine.
Furthermore, it is understood that this method also includes step：First setting speed, first setting speed are set according to operating mode
For 300-500rpm.First setting speed is set, the adaptability that excavator is directed to different operating modes can be increased.
Furthermore, it is understood that this method also includes step：During the engine start, main pump operating is driven, and by the master
Hydraulic oil is supplied main control valve by pump, and distributes hydraulic oil from main control valve to performance part.Main control valve receives the fuel feeding of main pump
Driveability part, to realize different actions.
Above-described is the preferred embodiment of the present invention, it should be pointed out that is come for the ordinary person of the art
Say, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, and these improvements and modifications also exist
In protection scope of the present invention.
Claims (7)
- A kind of 1. control system of engine start, it is characterised in that including：First magnetic valve, it is connected respectively with main pump and fuel tank；Controller, it is connected respectively with first magnetic valve and engine；The controller in engine start, start by detection The rotating speed of machine；During the engine start, if the rotating speed of the engine is less than the first setting speed, the electricity of controller control first Magnet valve is opened, and the section hydraulic oil in main pump is drained into the fuel tank；Otherwise, the controller controls the first magnetic valve to close Close, maintain the fuel delivery of the main pump to keep constant.
- 2. the control system of engine start as claimed in claim 1, it is characterised in that first setting speed is 300- 500rpm。
- 3. the control system of engine start as claimed in claim 1, it is characterised in that and described also including main control valve Main pump connects, and the main pump is to the main control valve fuel feeding；The main control valve distributes hydraulic oil to performance part.
- A kind of 4. control method of engine start, it is characterised in that including：Obtain rotating speed during engine start；If the rotating speed of the engine is less than the first setting speed, the section hydraulic oil in main pump is drained into fuel tank；Otherwise, tie up The fuel delivery for holding the main pump keeps constant.
- 5. the control method of engine start as claimed in claim 4, it is characterised in that first setting speed is basis Operating mode setting, first setting speed is 300-500rpm.
- 6. the control method of engine start as claimed in claim 4, it is characterised in that also include：During the engine start, main pump operating is driven, and hydraulic oil is supplied into main control valve by the main pump, and by main control Valve distributes hydraulic oil to performance part.
- 7. a kind of excavator, it is characterised in that include the control of the engine start as described in any one in claims 1 to 3 System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548571.8A CN107620339B (en) | 2016-07-13 | 2016-07-13 | Engine starting control system and method and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610548571.8A CN107620339B (en) | 2016-07-13 | 2016-07-13 | Engine starting control system and method and excavator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107620339A true CN107620339A (en) | 2018-01-23 |
| CN107620339B CN107620339B (en) | 2021-01-26 |
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ID=61086646
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610548571.8A Active CN107620339B (en) | 2016-07-13 | 2016-07-13 | Engine starting control system and method and excavator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140119868A1 (en) * | 2012-10-31 | 2014-05-01 | Caterpillar Inc. | Energy recovery system having peak-shaving accumulator |
| KR20140072365A (en) * | 2012-12-03 | 2014-06-13 | 두산인프라코어 주식회사 | Hydrauric Circuit of Construction Machinery with Recycling Energy |
| CN104088862A (en) * | 2014-07-04 | 2014-10-08 | 三一汽车起重机械有限公司 | Oil pump preheating system, hydraulic drive system and engineering machine |
| CN204239360U (en) * | 2014-11-11 | 2015-04-01 | 中联重科股份有限公司渭南分公司 | Starting load reduces formula hydraulic system and engineering machinery |
| CN204827752U (en) * | 2015-05-29 | 2015-12-02 | 徐州徐工挖掘机械有限公司 | Improve engine start's control system |
-
2016
- 2016-07-13 CN CN201610548571.8A patent/CN107620339B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140119868A1 (en) * | 2012-10-31 | 2014-05-01 | Caterpillar Inc. | Energy recovery system having peak-shaving accumulator |
| KR20140072365A (en) * | 2012-12-03 | 2014-06-13 | 두산인프라코어 주식회사 | Hydrauric Circuit of Construction Machinery with Recycling Energy |
| CN104088862A (en) * | 2014-07-04 | 2014-10-08 | 三一汽车起重机械有限公司 | Oil pump preheating system, hydraulic drive system and engineering machine |
| CN204239360U (en) * | 2014-11-11 | 2015-04-01 | 中联重科股份有限公司渭南分公司 | Starting load reduces formula hydraulic system and engineering machinery |
| CN204827752U (en) * | 2015-05-29 | 2015-12-02 | 徐州徐工挖掘机械有限公司 | Improve engine start's control system |
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| Publication number | Publication date |
|---|---|
| CN107620339B (en) | 2021-01-26 |
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