CN101025118A - Automatic idling control method for digger engine - Google Patents
Automatic idling control method for digger engine Download PDFInfo
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- CN101025118A CN101025118A CN 200710020360 CN200710020360A CN101025118A CN 101025118 A CN101025118 A CN 101025118A CN 200710020360 CN200710020360 CN 200710020360 CN 200710020360 A CN200710020360 A CN 200710020360A CN 101025118 A CN101025118 A CN 101025118A
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Abstract
The invention discloses a digger engine auto idling control method, characterized in that: setting engine sub-target speed lower than working-state target speed by 50-300r/min; setting high idling speed higher than low idling speed by 300-500r/min; setting precursor pressure threshold valve 5-20 Pa; setting first idle time and second idle time; in the working state, when precursor pressure is zero and lasts the first idle time, regulating to high idling state and lasting the second idle time, and then regulating to low idling state; when precursor pressure is greater than zero and less than the precursor pressure threshold, regulating the engine to the sub-target speed and when greater than the precursor pressure threshold, regulating the engine to the target speed. And the invention adopts two-stage speed reduction, overcoming the defect of high energy consumption caused by big rise and fall of engine speed; and uniting engine power, economy and quickness.
Description
Technical field
The present invention relates to of the idle speed control of a kind of engineering machinery, be specifically related to a kind of idle speed control of digger engine with motor.
Background technique
Mini-excavator is widely used in the foundation dredging of building construction and the occasions such as cleaning, urban duct layings, construction of water conservancy works after the completion, has the maneuverability of constructing, advantage that efficient is high.But in work progress, though standby time is not long at interval, standby times is frequent, during standby, need reduce throttle, enters idling mode, to reduce oil consumption, to reduce noise.Because artificial frequent operation throttle is very inconvenient, the structure of auto idle speed has appearred realizing.
In the prior art, digger engine auto idle speed control procedure is: motor is promptly controlled rotating speed and is reduced to idling speed keep certain hour under unloaded state after; When motor loads, control rotating speed automatically and get back to the setting working speed.Wherein, the identification of unloaded state of motor or loading is realized according to pilot pressure usually that promptly, when meta returns in all pilot operated mechanisms, pilot pressure is reduced to idling speed with engine speed after null value keeps certain hour; When controller has detected pilot pressure greater than zero the time, recover engine speed immediately to rotating speed of target.This idle speed control can make motor keep the slow-speed of revolution in idle condition, effectively reduces oil consumption, makes the driver obtain the lower noise environment of a period of time between at one's leisure, has utilization benefit and economic benefit preferably, thereby has obtained to use widely.But also there is following shortcoming in it: the engine speed change amplitude is bigger, has influenced the life-span and the reliability of motor; Engine speed can increase oil consumption when big rise and big fall, reduce the Economy of engineering machinery.
Summary of the invention
The object of the invention provides a kind of automatic idling control method for digger engine, when effectively reducing oil consumption and noise, avoids the big rise and big fall of engine speed, prolongs the working life of motor.
For achieving the above object, the technical solution used in the present invention is: a kind of automatic idling control method for digger engine, set motor time rotating speed of target, and described rotating speed of target is than low 50～300 rev/mins of the rotating speed of target of working state; Set high idle speed rotating speed and low idling speed, the low idling speed of described high idle speed rotating ratio is high 300～500 rev/mins; Set the pilot pressure threshold value, span is 5～20 crust; Set first idle time and second idle time; In working order down, detect pilot pressure, pilot power is zero and when continuing for first idle time in the ban, regulates the paramount idling mode of motor, when continuing to keep for second idle time, regulates motor to low idling mode; Under high idle speed or low idling mode, detect pilot pressure greater than zero and during less than the pilot pressure threshold value, regulate motor to time rotating speed of target, when detecting pilot pressure, regulate motor to rotating speed of target greater than the pilot pressure threshold value.
In the technique scheme, the pilot pressure threshold value is divided into two zones with the pilot pressure scope, is respectively low pressure area and zone of high pressure, and low pressure area is used to indicate slight load condition.Under slight load condition, drop engine speed, and under no-load condition, engine idle.Be provided with the secondary idling speed, enter high idle speed when non-loaded in short-term, enter low idling when the long period is non-loaded.Its working method is: in normal operation, when pilot power was in low pressure area in the ban, the engine target rotating speed reduced a value automatically, and this rotating speed is called time rotating speed of target; When the maximum value of each pilot pressure be zero and keep a period of time after, motor enters the high idle speed state; After pilot power maximum value was zero also continuation maintenance a period of time in the ban, motor entered low idling; Under the auto idle speed state, the maximum value of pilot power is greater than zero and when being in low pressure area in the ban, cancel auto idle speed and engine speed is returned to time rotating speed of target, the maximum value of pilot power is greater than zero and when being higher than low pressure area in the ban, and the cancellation auto idle speed also returns to rotating speed of target with engine speed.When pilot power was low in the ban, the traffic demand of hydraulic actuator was generally less, and the power demand of oil hydraulic pump is relatively low, and suitably reduce the engine target rotating speed and can improve excavator diesel engine power Dynamic matching situation under varying load condition this moment; Motor enters auto idle speed in two steps under idle condition, can reduce the engine speed amplitude of accommodation, and improves the speed of response of motor under certain condition, improves the running state of motor, improves engine energy-saving level and rapidity.
Further technological scheme is, when rotating speed of target, if detect pilot pressure less than the pilot pressure threshold value and greater than zero the time, regulates motor to time rotating speed of target; When inferior rotating speed of target,, regulate motor to rotating speed of target if when detecting pilot pressure greater than the pilot pressure threshold value.
In the technique scheme, described first idle time is between 0.5 to 5 second; Described second idle time is between 0.5 to 5 second.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1. the present invention is improved to the two-stage reduction of speed with traditional one-level reduction of speed, and motor can enter the high idle speed state in idle condition in short-term, when idle time is longer, then enters low idling mode, has overcome shortcomings such as energy consumption that engine speed big rise and big fall cause is big;
2. when auto idle speed is cancelled, controller is according to the recovery extent of the size decision engine speed of pilot pressure, can guarantee the speed of response and the power character of motor, the power match situation in the time of also improving slight the load has been accomplished the unification of engine power performance, Economy and rapidity;
3. the control range with automatic reduction of speed expands to idle condition and slight load condition by the idle state of motor, and in the slight load condition of motor, engine speed reduces certain rotating speed immediately, and the engine energy-saving noise reduction is had certain positive effect.
Description of drawings
Accompanying drawing 1 is the schematic representation of pilot pressure and rotating speed control in the embodiment of the invention two.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: a kind of automatic idling control method for digger engine, set motor time rotating speed of target, and described rotating speed of target is than low 50～300 rev/mins of the rotating speed of target of working state; Set high idle speed rotating speed and low idling speed, the low idling speed of described high idle speed rotating ratio is high 300～500 rev/mins; Set the pilot pressure threshold value, span is 5～20 crust; Set for first idle time between 0.5 to 5 second, second idle time is between 0.5 to 5 second; In working order down, detect pilot pressure, pilot power is zero and when continuing for first idle time in the ban, regulates the paramount idling mode of motor, when continuing to keep for second idle time, regulates motor to low idling mode; Under high idle speed or low idling mode, detect pilot pressure greater than zero and during less than the pilot pressure threshold value, regulate motor to time rotating speed of target, when detecting pilot pressure, regulate motor to rotating speed of target greater than the pilot pressure threshold value.
Embodiment two: shown in accompanying drawing 1, a kind of automatic idling control method for digger engine, rated engine speed 2100rpm, rotating speed of target when then the throttle gear is maximum is taken as 2100rpm, inferior rotating speed of target is taken as 2000rpm, the high idle speed rotating speed is taken as 1700rpm, and low idling speed is taken as 1300rpm, and the pilot pressure threshold value of slight load condition is taken as 10bar.
When controller detects all pilot pressures all less than 10bar, immediately engine speed is reduced to time rotating speed of target 2000rpm by rotating speed of target 2100rpm, when all pilot pressures are zero and continue 2 seconds, regulate motor and enter high idle speed rotating speed 1700rpm, when detecting all pilot pressures, controller is zero and at the high idle speed state continuance after 3 seconds, regulate motor and enter low idling speed 1300rpm, when motor under high idle speed or low idling mode, controller has detected at least one pilot pressure greater than zero the time, if pilot pressure is less than 10bar, then regulate engine speed and be taken as 2000rpm to time rotating speed of target, if pilot pressure greater than 10bar, is then regulated engine speed and is taken as 2100rpm to rotating speed of target.The control procedure schematic representation as shown in Figure 1.
Claims (3)
1. automatic idling control method for digger engine is characterized in that: set motor time rotating speed of target, described rotating speed of target is than low 50～300 rev/mins of the rotating speed of target of working state; Set high idle speed rotating speed and low idling speed, the low idling speed of described high idle speed rotating ratio is high 300～500 rev/mins; Set the pilot pressure threshold value, span is 5～20 crust; Set first idle time and second idle time; In working order down, detect pilot pressure, pilot power is zero and when continuing for first idle time in the ban, regulates the paramount idling mode of motor, when continuing to keep for second idle time, regulates motor to low idling mode; Under high idle speed or low idling mode, detect pilot pressure greater than zero and during less than the pilot pressure threshold value, regulate motor to time rotating speed of target, when detecting pilot pressure, regulate motor to rotating speed of target greater than the pilot pressure threshold value.
2. automatic idling control method for digger engine according to claim 1 is characterized in that: when rotating speed of target, if detect pilot pressure less than the pilot pressure threshold value and greater than zero the time, regulate motor to time rotating speed of target; When inferior rotating speed of target,, regulate motor to rotating speed of target if when detecting pilot pressure greater than the pilot pressure threshold value.
3. automatic idling control method for digger engine according to claim 1 is characterized in that: described first idle time is between 0.5 to 5 second; Described second idle time is between 0.5 to 5 second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100203608A CN100447390C (en) | 2007-02-12 | 2007-02-12 | Automatic idling control method for digger engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100203608A CN100447390C (en) | 2007-02-12 | 2007-02-12 | Automatic idling control method for digger engine |
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| CN101025118A true CN101025118A (en) | 2007-08-29 |
| CN100447390C CN100447390C (en) | 2008-12-31 |
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| CNB2007100203608A Expired - Fee Related CN100447390C (en) | 2007-02-12 | 2007-02-12 | Automatic idling control method for digger engine |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225668B (en) * | 2008-01-14 | 2010-12-15 | 浙江大学 | Control method of multiple system hybrid-power hydraulic shovel |
| CN102392746A (en) * | 2011-07-01 | 2012-03-28 | 长沙中联重工科技发展股份有限公司 | Off-the-highway tyre crane as well as method, device and system for controlling engine of same |
| WO2013003993A1 (en) * | 2011-07-01 | 2013-01-10 | 长沙中联重工科技发展股份有限公司 | Crane with off-road tyres and method, apparatus and system for controlling engine thereof |
| CN103047034A (en) * | 2012-12-28 | 2013-04-17 | 潍柴动力股份有限公司 | Low-idle-speed control method and low-idle-speed control device |
| 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 |
| CN103711169A (en) * | 2013-08-20 | 2014-04-09 | 浙江大学 | Automatic idling control method for hybrid excavator |
| CN104074225A (en) * | 2014-07-08 | 2014-10-01 | 湖南机电职业技术学院 | Hydraulic excavator power adaptive control system and method |
| CN104386584A (en) * | 2014-09-16 | 2015-03-04 | 潍柴动力股份有限公司 | Power control method and power control system for hoisting equipment |
| CN105649794A (en) * | 2015-12-31 | 2016-06-08 | 中联重科股份有限公司渭南分公司 | Automatic engine idle speed control equipment, method and system, and engineering machinery |
| CN105673224A (en) * | 2016-01-14 | 2016-06-15 | 潍柴动力股份有限公司 | Engine idle speed reduction oil saving method and device |
| CN111255562A (en) * | 2018-11-30 | 2020-06-09 | 陕西重型汽车有限公司 | Power system and control method of foam fire fighting truck and foam fire fighting truck |
| CN111456146A (en) * | 2020-04-13 | 2020-07-28 | 上海三一重机股份有限公司 | Excavator idle speed control method and device and control equipment |
| CN112208537A (en) * | 2020-10-19 | 2021-01-12 | 广西柳工机械股份有限公司 | Vehicle acceleration control method and system and vehicle |
| CN114251181A (en) * | 2020-09-22 | 2022-03-29 | 北京福田康明斯发动机有限公司 | Engine idling optimization control method and device and vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4450825A (en) * | 1981-12-28 | 1984-05-29 | Nippon Soken, Inc. | EGR Control system for diesel engine |
| JPH0860706A (en) * | 1994-08-18 | 1996-03-05 | Shin Caterpillar Mitsubishi Ltd | Power unit control method of construction equipment and device thereof |
| JP2006242110A (en) * | 2005-03-04 | 2006-09-14 | Hitachi Constr Mach Co Ltd | Hydraulic drive system for construction machine |
-
2007
- 2007-02-12 CN CNB2007100203608A patent/CN100447390C/en not_active Expired - Fee Related
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101225668B (en) * | 2008-01-14 | 2010-12-15 | 浙江大学 | Control method of multiple system hybrid-power hydraulic shovel |
| CN103270277B (en) * | 2010-12-21 | 2016-08-24 | 斗山英维高株式会社 | The automatic slip control method of heavy engineering equipment |
| 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 |
| CN102392746A (en) * | 2011-07-01 | 2012-03-28 | 长沙中联重工科技发展股份有限公司 | Off-the-highway tyre crane as well as method, device and system for controlling engine of same |
| WO2013003993A1 (en) * | 2011-07-01 | 2013-01-10 | 长沙中联重工科技发展股份有限公司 | Crane with off-road tyres and method, apparatus and system for controlling engine thereof |
| CN103047034A (en) * | 2012-12-28 | 2013-04-17 | 潍柴动力股份有限公司 | Low-idle-speed control method and low-idle-speed control device |
| CN103047034B (en) * | 2012-12-28 | 2016-02-10 | 潍柴动力股份有限公司 | A kind of low idle speed control and device |
| CN103711169A (en) * | 2013-08-20 | 2014-04-09 | 浙江大学 | Automatic idling control method for hybrid excavator |
| CN103711169B (en) * | 2013-08-20 | 2016-02-03 | 浙江大学 | Hybrid excavator automatic idling control method |
| CN104074225A (en) * | 2014-07-08 | 2014-10-01 | 湖南机电职业技术学院 | Hydraulic excavator power adaptive control system and method |
| CN104386584A (en) * | 2014-09-16 | 2015-03-04 | 潍柴动力股份有限公司 | Power control method and power control system for hoisting equipment |
| CN105649794A (en) * | 2015-12-31 | 2016-06-08 | 中联重科股份有限公司渭南分公司 | Automatic engine idle speed control equipment, method and system, and engineering machinery |
| CN105649794B (en) * | 2015-12-31 | 2018-10-16 | 中联重科股份有限公司渭南分公司 | Engine auto idle speed control device, method, system and engineering machinery |
| CN105673224A (en) * | 2016-01-14 | 2016-06-15 | 潍柴动力股份有限公司 | Engine idle speed reduction oil saving method and device |
| CN111255562A (en) * | 2018-11-30 | 2020-06-09 | 陕西重型汽车有限公司 | Power system and control method of foam fire fighting truck and foam fire fighting truck |
| CN111456146A (en) * | 2020-04-13 | 2020-07-28 | 上海三一重机股份有限公司 | Excavator idle speed control method and device and control equipment |
| 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 |
| CN114251181A (en) * | 2020-09-22 | 2022-03-29 | 北京福田康明斯发动机有限公司 | Engine idling optimization control method and device and vehicle |
| CN114251181B (en) * | 2020-09-22 | 2024-01-19 | 北京福田康明斯发动机有限公司 | Engine idle speed optimization control method and device and vehicle |
| CN112208537A (en) * | 2020-10-19 | 2021-01-12 | 广西柳工机械股份有限公司 | Vehicle acceleration control method and system and vehicle |
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