CN105649794B - Automatic idle speed control equipment, method and system for engine and engineering machinery - Google Patents
Automatic idle speed control equipment, method and system for engine and engineering machinery Download PDFInfo
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- CN105649794B CN105649794B CN201511028816.6A CN201511028816A CN105649794B CN 105649794 B CN105649794 B CN 105649794B CN 201511028816 A CN201511028816 A CN 201511028816A CN 105649794 B CN105649794 B CN 105649794B
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- engine
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- idling section
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000523 sample Substances 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 abstract 2
- 239000003921 oil Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 230000008450 motivation Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention relates to the field of engineering machinery, and discloses an automatic idle speed control device, method and system for an engine and engineering machinery, wherein the device comprises: the receiving device is used for receiving a signal indicating that the operating handle is in a middle position and the rotating speed of the engine; and the control device is used for controlling the engine speed to be reduced to a first-stage idling interval under the conditions that the engine speed exceeds a preset value, the operating handle is in a neutral position and no operation is performed within a first preset time period, and then one or more of the following steps are executed: under the conditions that the rotating speed of the engine is in a first-stage idling interval, the operating handle is in a middle position and no operation is performed within a second preset time period, the rotating speed of the engine is controlled to be reduced to a second-stage idling interval; and under the conditions that the engine speed is in the second-stage idling interval, the operating handle is in the neutral position and no operation is performed within a third preset time period, controlling the engine speed to be reduced to a third-stage idling interval.
Description
Technical field
The present invention relates to engineering machinery fields, and in particular, to a kind of engine auto idle speed control device method, is
System and engineering machinery.
Background technology
Auto idle speed refer to being in the state of running at high speed when motivation and in the short time without any action when, control system meeting
Automatically engine speed is down to regulation idling mode；When there is arbitrary operational motion, control system can automatically turn engine
Speed rises to the high-speed state of requirement from idling mode.The function of auto idle speed mainly reduces oil consumption, improves engine and liquid
Press the service life of main pump.
It is mainly completed in the prior art with electrical co- controlling by hydraulic pressure about the control of engine auto idle speed,
Electrical system acquires the pressure of guide's oil circuit, and electric control system controls device is to judge operation handle by judging pilot pressure size
It is no to return to middle position.In the case of in position during operation handle returns to and 0.5s without any operation, engine speed can be turned from height
Prompt drop is down to regulation idling to regulation idling or at twice by transmitter rotating speed by high rotating speed, both control modes are usual
Referred to as level-one auto idle speed and two level auto idle speed.After engine enters idling mode, if control crank leaves middle position, start
The rotating speed that grip is set before machine rotating speed can be promoted to immediately.
However, there are following drawbacks for the scheme of above-mentioned level-one auto idle speed and two level auto idle speed：Engine auto idle speed
It generally is set in 1350r/min or so, if engine is in 2000r/min operatings, after auto idle speed function is opened, is started
Machine rotating speed can be down to 1350r/min from 2000r/min suddenly, and engine and the abrasion of hydraulic system main pump can increase, reduced lifetime；
And two level auto idle speed function with engine and main pump service life can be improved, but keep the idling mode for a long time when, to large ore
For the excavator of mountain, energy-saving effect is bad.
Invention content
The object of the present invention is to provide a kind of engine auto idle speed control device, method, system and engineering machinery, can
It realizes grading automatical idling, so that engine is smoothly dropped to from high rotating speed to slow-speed of revolution idling mode, to protect engine
With hydraulic pressure main pump.
To achieve the goals above, the present invention provides a kind of engine auto idle speed control device, which includes：It receives
Device is in the signal and engine speed of middle position for receiving instruction operation handle；And control device, for described
The case where engine speed is in middle position and one first predetermined amount of time beyond preset value, the operation handle without any operation
Under, control the engine speed and be reduced to first order idling section, and execute later it is following one or more：Start described
Machine rotating speed is in first order idling section, the operation handle is in middle position and one second predetermined amount of time is interior without any operation
In the case of, it controls the engine speed and is reduced to second level idling section；And it is in the second level in the engine speed
In the case that idling section, the operation handle are in middle position and a third predetermined amount of time without any operation, described in control
Engine speed is reduced to third level idling section, wherein the preset value, first order idling section, the second level are idle
Rotating speed reduces successively corresponding to fast section and third level idling section.
Wherein, third level idling section can correspond to one grade of rotating speed section of operation range.
Wherein, second level idling section can correspond to operation range third gear rotating speed section.
Wherein, the control device be additionally operable to execute it is following one or more：It is in described the in the engine speed
In the case of between two level idling section and third level idling section, engine speed is not adjusted；And institute
It states that engine speed is between the preset value and second level idling section, the operation handle is in middle position and one the 4th is pre-
In section of fixing time without any operation in the case of, control the engine speed and be reduced to second level idling section.
Correspondingly, the present invention also provides a kind of engine automatic idle speed control system, which includes：Speed probe,
Rotating speed for detecting the engine；Pressure sensor, the first pilot of the pilot handle oil circuit for detecting the engine
Power；And above-mentioned engine auto idle speed control device.
Correspondingly, the present invention also provides a kind of engineering machinery, which controls comprising above-mentioned engine auto idle speed
System.
Correspondingly, the present invention also provides a kind of engine automatic idling control method, this method includes：Receive instruction operation
Handle is in the signal and engine speed of middle position；And in the engine speed beyond preset value, the operation handle
In middle position and one first predetermined amount of time without any operation in the case of, control the engine speed and be reduced to the first order
Idling section, and execute later it is following one or more：It is in first order idling section, the operation in the engine speed
In the case that handle is in middle position and one second predetermined amount of time without any operation, controls the engine speed and be reduced to the
Two level idling section；And the engine speed is in second level idling section, the operation handle is in middle position and one
In third predetermined amount of time without any operation in the case of, control the engine speed and be reduced to third level idling section,
Described in preset value, first order idling section, second level idling section and the third level idling section institute it is right
Rotating speed is answered to reduce successively.
Wherein, third level idling section can correspond to one grade of rotating speed section of operation range.
Wherein, second level idling section can correspond to operation range third gear rotating speed section.
Wherein, this method further includes that can descend one or more persons：It is in the second level idling in the engine speed
In the case of between section and third level idling section, engine speed is not adjusted；And in the engine
Rotating speed is between the preset value and second level idling section, the operation handle is in middle position and one the 4th predetermined amount of time
It is interior without any operation in the case of, control the engine speed and be reduced to second level idling section.
Through the above technical solutions, it can realize at least three-level auto idle speed, engine is made smoothly to decline from high rotating speed
To slow-speed of revolution idling mode, to protect engine and hydraulic pressure main pump.In addition, the engine auto idle speed scheme section of the present invention
Energy property is good, energy saving to become apparent from especially when hydraulic oil temperature is on a declining curve, is particularly suitable for large-scale mine excavator or other
Engineering truck.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Attached drawing is to be used to provide further understanding of the present invention, an and part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of engine automatic idle speed control system provided by the invention；
Fig. 2 is the fundamental diagram of engine auto idle speed control device provided by the invention；And
Fig. 3 is the flow chart of engine automatic idling control method provided by the invention.
Reference sign
10 speed probe, 20 engine
30 pressure sensor, 40 pilot handle oil circuit
50 engine speed adjusting actuator, 60 control device
70 fuses
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with attached drawing.It should be understood that this place is retouched
The specific implementation mode stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
Fig. 1 is the structural schematic diagram of engine automatic idle speed control system provided by the invention.As shown in Figure 1, of the invention
A kind of engine automatic idle speed control system is provided, which includes：Speed probe 10, for detecting the engine 20
Rotating speed；Pressure sensor 30, the pilot pressure of the pilot handle oil circuit 40 for detecting the engine；And engine is automatic
Idle speed control equipment 60, the equipment include：Reception device, for receives indicate operation handle be in middle position signal (for example,
State the pilot pressure that pressure sensor 30 is acquired) and engine speed；And control device, for turning in the engine
In the case that speed is in middle position and one first predetermined amount of time beyond preset value, the operation handle without any operation, control
The engine speed is reduced to first order idling section, and execute later it is following one or more：In the engine speed
The case where being in middle position and one second predetermined amount of time without any operation in first order idling section, the operation handle
Under, it controls the engine speed and is reduced to second level idling section；And it is in second level idling in the engine speed
In the case that section, the operation handle are in middle position and a third predetermined amount of time without any operation, start described in control
Machine rotating speed is reduced to third level idling section.The above-mentioned adjusting to engine speed is turned by engine shown in Fig. 1
What fast adjusting actuator 50 executed, which may be, for example, engine ECM or throttle motor.This hair
It is bright to be provided at least three-level auto idle speed, it may make engine smoothly to drop to from high rotating speed to slow-speed of revolution idling mode, from
And protect engine and hydraulic pressure main pump.In addition, in the setting up and may make and whether be in for operation handle of above-mentioned pressure sensor
Position is highly reliably detected, and response greatly improves.
Wherein, the control device can also be used to executing it is following one or more：It is in described in the engine speed
In the case of between second level idling section and third level idling section, engine speed is not adjusted；And
The engine speed is between the preset value and second level idling section, the operation handle is in middle position and one the 4th
In predetermined amount of time without any operation in the case of, control the engine speed and be reduced to second level idling section.
The wherein described preset value, first order idling section, second level idling section and the third level are idle
Rotating speed reduces successively corresponding to fast section, and its value is contemplated that engine power curve and oil consumption curve.Mentioned herein
Be " idling section ", but also can be a certain specific idle speed value (for details, reference can be made to the descriptions below in conjunction with Fig. 2).Described first is pre-
Fix time section, the second predetermined amount of time, third predetermined amount of time and the 4th predetermined amount of time can carry out according to actual needs
Be arranged (for example, can according to the different operating modes (for example, entrucking operating mode and digging working condition) for engineering machinery carry out practice examining come
Determine), between each other can it is identical also can be different.
Fig. 2 is the fundamental diagram of engine auto idle speed control device provided by the invention.As shown in Fig. 2, according to hair
The case where motivation rotating speed N, engine auto idle speed control device of the invention 3 kinds of situations of control point carry out engine speed control
System：
1) work as n0When ＜ N≤n
From engine itself and actual needs, engine speed is in this range, auto idle speed function real value
It is not obvious, so engine speed is not required to be adjusted, i.e., engine speed remains unchanged.
2) as n ＜ N≤n2When
When operation handle returns to middle position and handle returns to behind middle position in 0.5s without any operation, engine auto idle speed control
Control equipment sends out the idling speed n that engine speed is down to setting by instruction, into second level idling mode.Here, the idling
Rotating speed n can be taken as 3 grades of rotating speeds of operation range.
3, work as n2When ＜ N
When operation handle returns to middle position, and when handle is returned to behind middle position in 0.5s without any operation, engine auto idle speed
Control device sends out instruction and engine speed is down to first order idling speed n1, into first order idling mode.Rotating speed n1It is non-
Fixed value, program setting n1Than the low 200-300r/min of N；If after (t1-0.5) s, during operation handle is still in
Position, engine auto idle speed control device continues to send out to instruct is down to second level idling speed n by engine speed, into second
Grade idling mode；If using (t2-t1) s, operation handle is still in middle position, and engine auto idle speed control device continues
It sends out instruction and engine speed is down to third level idling speed n0, into third level idling mode.Here, idling speed n0It can
It is taken as 1 grade of rotating speed of operation range.
No matter in what state, after engine enters idling mode, if manipulating either maneuver handle, engine speed
The rotating speed of gear is set before being promoted to immediately.
Fig. 3 is the flow chart of engine automatic idling control method provided by the invention.As shown in figure 3, correspondingly, this hair
Bright also to provide a kind of engine automatic idling control method, this method includes：Receive the signal that instruction operation handle is in middle position
And engine speed；And middle position and one first is in beyond preset value, the operation handle in advance in the engine speed
In section of fixing time without any operation in the case of, control the engine speed and be reduced to first order idling section, and hold later
Row it is following one or more：The engine speed is in first order idling section, the operation handle is in middle position and one
In second predetermined amount of time without any operation in the case of, control the engine speed and be reduced to second level idling section；With
And the engine speed is in second level idling section, the operation handle is in middle position and a third predetermined amount of time
It in the case of without any operation, controls the engine speed and is reduced to third level idling section, wherein the preset value, described
Rotating speed reduces successively corresponding to first order idling section, second level idling section and third level idling section.
Wherein, this method further includes that can descend one or more persons：It is in the second level idling in the engine speed
In the case of between section and third level idling section, engine speed is not adjusted；And in the engine
Rotating speed is between the preset value and second level idling section, the operation handle is in middle position and one the 4th predetermined amount of time
It is interior without any operation in the case of, control the engine speed and be reduced to second level idling section.
Correspondingly, the present invention also provides a kind of engineering machinery, which controls comprising above-mentioned engine auto idle speed
System.The engineering machinery may be, for example, excavator, concrete mixer, concrete mixing plant etc..
Through the above technical solutions, it can realize at least three-level auto idle speed, engine is made smoothly to decline from high rotating speed
To slow-speed of revolution idling mode, to protect engine and hydraulic pressure main pump.In addition, the engine auto idle speed scheme section of the present invention
Energy property is good, energy saving to become apparent from especially when hydraulic oil temperature is on a declining curve, is particularly suitable for large-scale mine excavator or other
Engineering truck.
The preferred embodiment of the present invention is described in detail above in association with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical scheme of the present invention
Monotropic type, these simple variants all belong to the scope of protection of the present invention.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (8)
1. a kind of engine auto idle speed control device, which is characterized in that the equipment includes：
Reception device is in the signal and engine speed of middle position for receiving instruction operation handle；And
Control device, for exceeding preset value in the engine speed, the operation handle is in middle position and one first is predetermined
In period without any operation in the case of, control the engine speed and be reduced to first order idling section, and execute later
It operates below：
The engine speed is in first order idling section, the operation handle is in middle position and one second predetermined amount of time
It is interior without any operation in the case of, control the engine speed and be reduced to second level idling section；
The engine speed is in second level idling section, the operation handle is in middle position and a third predetermined amount of time
It is interior without any operation in the case of, control the engine speed and be reduced to third level idling section；
In the case where the engine speed is between second level idling section and third level idling section, no
Engine speed is adjusted；
The engine speed is between the preset value and second level idling section, the operation handle is in middle position and
In one the 4th predetermined amount of time without any operation in the case of, control the engine speed and be reduced to second level idling section,
And
The wherein described preset value, first order idling section, second level idling section and the third level idle speed zone
Between corresponding rotating speed reduce successively.
2. control device according to claim 1, which is characterized in that third level idling section corresponds to operation range
One grade of rotating speed section.
3. control device according to claim 1, which is characterized in that second level idling section corresponds to operation range
Third gear rotating speed section.
4. a kind of engine automatic idle speed control system, which is characterized in that the system includes：
Speed probe, the rotating speed for detecting the engine；
Pressure sensor, the pilot pressure of the pilot handle oil circuit for detecting the engine；And
Engine auto idle speed control device according to any claim in claim 1-3.
5. a kind of engineering machinery, which is characterized in that the engineering machinery includes engine auto idle speed according to claim 4
Control system.
6. a kind of engine automatic idling control method, which is characterized in that this method includes：
Receive signal and engine speed that instruction operation handle is in middle position；And
It is in middle position and one first predetermined amount of time without any beyond preset value, the operation handle in the engine speed
In the case of operation, controls the engine speed and be reduced to first order idling section, and execute following operation later：
The engine speed is in first order idling section, the operation handle is in middle position and one second predetermined amount of time
It is interior without any operation in the case of, control the engine speed and be reduced to second level idling section；And
The engine speed is in second level idling section, the operation handle is in middle position and a third predetermined amount of time
It is interior without any operation in the case of, control the engine speed and be reduced to third level idling section；
In the case where the engine speed is between second level idling section and third level idling section, no
Engine speed is adjusted；
The engine speed is between the preset value and second level idling section, the operation handle is in middle position and
In one the 4th predetermined amount of time without any operation in the case of, control the engine speed and be reduced to second level idling section,
And
The wherein described preset value, first order idling section, second level idling section and the third level idle speed zone
Between corresponding rotating speed reduce successively.
7. control method according to claim 6, which is characterized in that third level idling section corresponds to operation range
One grade of rotating speed section.
8. control method according to claim 6, which is characterized in that second level idling section corresponds to operation range
Third gear rotating speed section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028816.6A CN105649794B (en) | 2015-12-31 | 2015-12-31 | Automatic idle speed control equipment, method and system for engine and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511028816.6A CN105649794B (en) | 2015-12-31 | 2015-12-31 | Automatic idle speed control equipment, method and system for engine and engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105649794A CN105649794A (en) | 2016-06-08 |
| CN105649794B true CN105649794B (en) | 2018-10-16 |
Family
ID=56490996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511028816.6A Active CN105649794B (en) | 2015-12-31 | 2015-12-31 | Automatic idle speed control equipment, method and system for engine and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105649794B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111456146B (en) * | 2020-04-13 | 2021-11-09 | 上海三一重机股份有限公司 | Excavator idle speed control method and device and control equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6277050B1 (en) * | 1999-03-01 | 2001-08-21 | Komatsu Ltd. | Engine speed control system for work vehicle |
| CN101025118A (en) * | 2007-02-12 | 2007-08-29 | 三一重机有限公司 | Automatic idling control method for digger engine |
| CN103270277A (en) * | 2010-12-21 | 2013-08-28 | 斗山英维高株式会社 | Method for controlling auto idle state of heavy construction equipment |
-
2015
- 2015-12-31 CN CN201511028816.6A patent/CN105649794B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6277050B1 (en) * | 1999-03-01 | 2001-08-21 | Komatsu Ltd. | Engine speed control system for work vehicle |
| CN101025118A (en) * | 2007-02-12 | 2007-08-29 | 三一重机有限公司 | Automatic idling control method for digger engine |
| CN103270277A (en) * | 2010-12-21 | 2013-08-28 | 斗山英维高株式会社 | Method for controlling auto idle state of heavy construction equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105649794A (en) | 2016-06-08 |
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Effective date of registration: 20211202 Address after: Room 4015, office building, 677 Lugu Avenue, Changsha hi tech Development Zone, Hunan 410000 Patentee after: Zoomlion earth moving machinery Co.,Ltd. Address before: 714000 west section of Chaoyang Street, high tech Zone, Weinan City, Shaanxi Province Patentee before: ZOOMLION HEAVY INDUSTRY SCIENCE&TECHNOLOGY Co.,Ltd. |