CN107905287B - Digger engine start-stop control system and control method - Google Patents
Digger engine start-stop control system and control method Download PDFInfo
- Publication number
- CN107905287B CN107905287B CN201711000513.2A CN201711000513A CN107905287B CN 107905287 B CN107905287 B CN 107905287B CN 201711000513 A CN201711000513 A CN 201711000513A CN 107905287 B CN107905287 B CN 107905287B
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- Prior art keywords
- engine
- controller
- pilot valve
- handle
- pilot
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Operation Control Of Excavators (AREA)
Abstract
The present invention relates to digger engine controls, to solve the problems, such as that existing digger engine start stop operation is complicated；A kind of digger engine start-stop control system is provided, accumulator is connected on handle pilot valve oil inlet oil circuit and is connected with pressure sensor on the fuel-displaced oil circuit of handle pilot valve；When electric lock is in ON grades and engine is in operating condition, handle pilot valve output twice the time interval of continuous pilot pressure pulse signal and two output of pulse signal be less than preset value when, controller control engine misses stop operating；When electric lock is in ON grades and engine is in flameout state, controller detects the pilot pressure of handle pilot valve output by pressure sensor, if the pilot pressure of handle pilot valve output, greater than corresponding preset value and when duration is greater than corresponding preset value, controller control engine start simultaneously operates.Digger engine start stop operation of the present invention is convenient, and structure is simple.
Description
Technical field
The present invention relates to a kind of controls of excavator, more specifically to a kind of digger engine start-stop control system
And control method.
Background technique
With the rise of Construction Machinery Energy Saving technology, each producer carries out various Study on energy saving one after another.Wherein with hair
The progress of motivation technology is suitble to the engine start and stop technology of excavator work characteristics to tend to be popular in recent years.The technology by
When the excavator short time does not work, engine is closed, to achieve the purpose that save fuel oil；When the work is required, it is again started up hair
Motivation.
Currently, the start and stop of engine are mainly realized by electric lock switch, driver, which needs to rotate electric lock, could complete to send out
The start-up and shut-down control of motivation, then operated pilot handle, are just able to achieve the driving for excavator.The both hands of driver need frequent
Moved between electric lock, pilot handle, cause it is inconvenient, increase driving burden.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to the problem of existing digger engine start stop operation complexity, and provide
A kind of easy to operate digger engine start-stop control system and control method.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of digger engine start-up and shut-down control system
System, controller, electric lock connected to the controller including engine, for controlling engine, handle pilot valve, it is characterised in that packet
The pressure sensor for including the accumulator being connected on handle pilot valve oil inlet oil circuit and being connected on the fuel-displaced oil circuit of handle pilot valve；Work as electricity
For lock in ON grades and when engine is in operating condition, controller detects the first pilot that handle pilot valve exports by pressure sensor
Power, if the pilot pressure of handle pilot valve output has continuous pilot pressure output of pulse signal twice and two pulse signals are defeated
When time interval out is less than preset value, controller control engine misses stop operating；When electric lock is in ON grades and engine
When in flameout state, controller detects the pilot pressure that handle pilot valve exports by pressure sensor, if handle pilot valve exports
Pilot pressure when being greater than corresponding preset value and duration and being greater than corresponding preset value, controller control engine start is simultaneously transported
Turn.
Further, in above-mentioned digger engine start-stop control system, the pilot pressure pulse signal it is lasting when
Between be less than corresponding preset value.
The present invention is to realize that the technical solution of its purpose is such that provide a kind of digger engine start-up and shut-down control side
Method, the excavator include engine, the controller for controlling engine, electric lock connected to the controller, and handle pilot valve is special
Sign is to be connected with accumulator on handle pilot valve oil inlet oil circuit and connects pressure sensor on the fuel-displaced oil circuit of handle pilot valve, is somebody's turn to do
Engine start-up and shut-down control method the following steps are included:
S1: whether controller detection electric lock is in ON gear, and step S2 is carried out if fruit is, is otherwise terminated；
S2: controller detects engine condition, if engine is in operating condition and controller is examined by pressure sensor
Measure handle pilot valve have continuous pilot pressure output of pulse signal twice and two pilot pressure output of pulse signal when
Between interval be less than preset value when controller to engine send misfire signals；If engine current state is in flameout state and control
Device processed detects that handle pilot valve has pilot pressure signal output and the pilot pressure signal exported continues by pressure sensor
Controller sends enabling signal to engine when time is greater than corresponding preset value.
Further, in above-mentioned digger engine start-up and shut-down control method, the pilot pressure pulse signal duration
Less than corresponding preset value.Above-mentioned pilot pressure signal all refers to that pressure value is greater than the pressure of certain value.
The start-up and shut-down control mode of digger engine start-stop control system of the present invention is as follows:
Start for the first time: turning electric lock to start grades, controller controls engine start after receiving the signal, starting
Electric lock is repositioned to ON grades afterwards.
When excavator, which is in the working clearance, to be needed to stop, handle pilot valve is continuously pulled twice in the short time, is pulled every time
Handle pilot valve, handle pilot valve export an of short duration pilot pressure signal (pilot pressure pulse signal), the pilot pressure pulse
Signal enters controller by pressure sensor, and controller detects pilot pressure pulse signal twice and pulse signal is defeated twice
Time interval out is less than preset value, and controller issues the signal of engine stall, engine stop operating.Each elder generation
Leading pressure pulse signal duration should be less than corresponding preset duration.
When needing to be again started up engine, due to there is residual pressure in accumulator, and electric lock is on state, pulls at this time
It starts pilot valve, which enters controller by pressure sensor, when controller receives the pilot pressure signal and the pressure
When the force signal duration is greater than corresponding preset duration, controller and then starting engine operating.
Compared with prior art, the present invention having the advantage that
1, the system operatio is easy, and driver is avoided frequently to move between pilot handle, electric lock.
2, the system does not increase component additionally, cheap.
Detailed description of the invention
Fig. 1 is the schematic diagram of digger engine start-stop control system of the present invention.
Parts title and serial number in figure:
Handle pilot valve 1, pressure sensor 2, controller 3, accumulator 4, electric lock 5, engine 6.
Specific embodiment
Illustrate specific embodiment with reference to the accompanying drawing.
As shown in Figure 1, the digger engine start-stop control system in the present embodiment includes engine 6, for controlling hair
The controller 3 of motivation, electric lock connected to the controller 5, handle pilot valve 1, the accumulator 4 being connected on handle pilot valve oil inlet oil circuit
With the pressure sensor 2 being connected on the fuel-displaced oil circuit of handle pilot valve.Pressure sensor can only handle pilot valve wherein all the way
It is arranged on output circuit, can also be arranged on the wherein two-way or multiple-channel output oil circuit of handle pilot valve.When electric lock is in ON grades
And engine, when being in operating condition, controller detects the pilot pressure that handle pilot valve exports by pressure sensor, if hand is first
The pilot pressure of pilot valve output has the time of continuous pilot pressure output of pulse signal and two output of pulse signal twice
When interval is less than preset value, controller control engine misses stop operating；It is in flame-out when electric lock is in ON grades and engine
When state, controller detects the pilot pressure that handle pilot valve exports by pressure sensor, if the first pilot of handle pilot valve output
Greater than corresponding preset value and when duration is greater than corresponding preset value, controller control engine start simultaneously operates power.Guide
The duration of pressure pulse signal is less than corresponding preset value.
Above-mentioned digger engine start-stop control system start-up and shut-down control method the following steps are included:
Step S1: whether controller detection electric lock is in ON gear, and step S2 is carried out if fruit is, is otherwise terminated.
Step S2: controller detects engine condition, if engine is in operating condition, controller passes through pressure sensing
Device detects the pilot pressure of handle pilot valve output, when the pilot pressure of handle pilot valve output has continuous pilot pressure arteries and veins twice
Rush controller when the time interval of signal and two pilot pressure output of pulse signal is less than preset value sent to engine it is flame-out
Signal；If engine current state is in flameout state, controller detects the guide that handle pilot valve exports by pressure sensor
Pressure, when handle pilot valve has, effective pilot pressure signal is exported and the effective pilot pressure signal duration exported is greater than
Controller sends enabling signal to engine when corresponding preset value.
Digger engine start-up and shut-down control mode of the present invention is as follows:
Start for the first time: turning electric lock to start grades, controller controls engine start after receiving the signal, starting
Electric lock is repositioned to ON grades afterwards.
When excavator, which is in the working clearance, to be needed to stop, handle pilot valve is continuously pulled twice in the short time, is pulled every time
Handle pilot valve, handle pilot valve export an of short duration pilot pressure signal (pilot pressure pulse signal), the pilot pressure pulse
Signal enters controller by pressure sensor, and controller detects pilot pressure pulse signal twice and pulse signal is defeated twice
Time interval out is less than preset value, and controller issues the signal of engine stall, engine stop operating.Each elder generation
Leading pressure pulse signal duration should be less than corresponding preset duration.
When needing to be again started up engine, due to there is residual pressure in accumulator, and electric lock is on state, pulls at this time
It starts pilot valve, which enters controller by pressure sensor, when controller receives the pilot pressure signal and the pressure
When the force signal duration is greater than corresponding preset duration, controller and then starting engine operating.
Claims (4)
1. a kind of digger engine start-stop control system, including engine, controller and controller for controlling engine
The electric lock of connection, handle pilot valve, it is characterised in that including the accumulator being connected on handle pilot valve oil inlet oil circuit and be connected to hand
Pressure sensor on the fuel-displaced oil circuit of pilot valve；When electric lock is in ON grades and engine is in operating condition, controller passes through
The pilot pressure of pressure sensor detection handle pilot valve output, if the pilot pressure of handle pilot valve output is with continuous twice first
When the time interval of pilot power output of pulse signal and two output of pulse signal is less than preset value, controller control engine is put out
Fire stops operating；When electric lock is in ON grades and engine is in flameout state, controller detects hand elder generation by pressure sensor
The pilot pressure of pilot valve output, if the pilot pressure of handle pilot valve output is greater than corresponding preset value and duration is greater than correspondence
When preset value, controller control engine start is simultaneously operated.
2. digger engine start-stop control system according to claim 1, it is characterised in that the pilot pressure pulse
The duration of signal is less than corresponding preset value.
3. a kind of digger engine start-up and shut-down control method, the excavator include engine, the controller for controlling engine,
Electric lock connected to the controller, handle pilot valve, it is characterised in that on handle pilot valve oil inlet oil circuit be connected with accumulator and in hand
Connect pressure sensor on the fuel-displaced oil circuit of pilot valve, the engine start-up and shut-down control method the following steps are included:
S1: whether controller detection electric lock is in ON gear, and step S2 is carried out if fruit is, is otherwise terminated；
S2: controller detects engine condition, if engine is in operating condition and controller is detected by pressure sensor
Handle pilot valve had continuous pilot pressure output of pulse signal twice and between the time of two pilot pressure output of pulse signal
Controller sends misfire signals to engine when being less than preset value；If engine current state is in flameout state and controller
The pilot pressure signal duration that handle pilot valve has pilot pressure signal output and exports is detected by pressure sensor
Controller sends enabling signal to engine when greater than corresponding preset value.
4. digger engine start-up and shut-down control method according to claim 3, it is characterised in that the pilot pressure pulse
Signal duration is less than corresponding preset value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711000513.2A CN107905287B (en) | 2017-10-24 | 2017-10-24 | Digger engine start-stop control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711000513.2A CN107905287B (en) | 2017-10-24 | 2017-10-24 | Digger engine start-stop control system and control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107905287A CN107905287A (en) | 2018-04-13 |
| CN107905287B true CN107905287B (en) | 2019-09-17 |
Family
ID=61841697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711000513.2A Active CN107905287B (en) | 2017-10-24 | 2017-10-24 | Digger engine start-stop control system and control method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305134A (en) * | 2011-06-24 | 2012-01-04 | 三一重机有限公司 | Method for realizing flameout function by using accelerator device |
| WO2012049812A1 (en) * | 2010-10-13 | 2012-04-19 | 株式会社竹内製作所 | Control device for working machine |
| CN204199368U (en) * | 2014-10-11 | 2015-03-11 | 龙工（上海）挖掘机制造有限公司 | A kind of control device preventing low engine speeds flame-out |
| WO2016093378A1 (en) * | 2014-12-08 | 2016-06-16 | 볼보 컨스트럭션 이큅먼트 에이비 | Flow rate control device for construction machine |
| CN106068353A (en) * | 2014-03-03 | 2016-11-02 | 凯斯纽荷兰(中国)管理有限公司 | There is the working machine returning data mining duty |
| WO2016204321A1 (en) * | 2015-06-16 | 2016-12-22 | 볼보 컨스트럭션 이큅먼트 에이비 | Swing control apparatus for construction machinery and control method thereof |
-
2017
- 2017-10-24 CN CN201711000513.2A patent/CN107905287B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012049812A1 (en) * | 2010-10-13 | 2012-04-19 | 株式会社竹内製作所 | Control device for working machine |
| CN102305134A (en) * | 2011-06-24 | 2012-01-04 | 三一重机有限公司 | Method for realizing flameout function by using accelerator device |
| CN106068353A (en) * | 2014-03-03 | 2016-11-02 | 凯斯纽荷兰(中国)管理有限公司 | There is the working machine returning data mining duty |
| CN204199368U (en) * | 2014-10-11 | 2015-03-11 | 龙工（上海）挖掘机制造有限公司 | A kind of control device preventing low engine speeds flame-out |
| WO2016093378A1 (en) * | 2014-12-08 | 2016-06-16 | 볼보 컨스트럭션 이큅먼트 에이비 | Flow rate control device for construction machine |
| WO2016204321A1 (en) * | 2015-06-16 | 2016-12-22 | 볼보 컨스트럭션 이큅먼트 에이비 | Swing control apparatus for construction machinery and control method thereof |
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| Publication number | Publication date |
|---|---|
| CN107905287A (en) | 2018-04-13 |
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