CN202131631U - Energy saving controlling device of hydraulic excavator engine - Google Patents
Energy saving controlling device of hydraulic excavator engine Download PDFInfo
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- CN202131631U CN202131631U CN201120157644U CN201120157644U CN202131631U CN 202131631 U CN202131631 U CN 202131631U CN 201120157644 U CN201120157644 U CN 201120157644U CN 201120157644 U CN201120157644 U CN 201120157644U CN 202131631 U CN202131631 U CN 202131631U
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Abstract
The utility model relates to an energy saving controlling device of a hydraulic excavator engine, which comprises a center control unit, a power mode selector connected with the center control unit, an accelerator control unit and a rotating speed sensor used for detecting engine rotating speed; the engine and a hydraulic pump are in transmission connection; the energy saving controlling device is characterized in that the center control unit is connected with a proportion electromagnetic valve which controls flow capacity of the hydraulic pump according to the engine rotating speed; and the proportion electromagnetic valve is additionally provided on the hydraulic pump. The flow capacity of the hydraulic pump changes accompanying variation of the engine rotating speed after detecting; the greater the variation of the engine rotating speed is, the greater the change amplitude of the flow capacity of the hydraulic pump is; such that the less the variation of the engine rotating speed is, the better an energy-saving effect is; the work rotating speed of the engine is limited in a small range by means of such adjustment; and fuel consumption of the engine is decreased by 5% to 10% compared to that before control based on different work conditions and various operational circumstances of users.
Description
Technical field
The utility model relates to a kind of energy-saving control device of hydraulic crawler excavator motor.
Background technology
The construction machinery product fuel utilization ratio is extremely low, especially hydraulic crawler excavator.The power output of motor probably has only 20% really to be converted into useful work.Wherein about 40% is lost in Hydraulic Elements, and about 20% is lost in the motion of car body and apparatus for work, about 20% is lost in throttle grverning control in addition.
Motor is as the core energy parts of excavator, for excavator provides whole kinetic energy.But, all there is an identical disadvantage for all motors, i.e. the variation of rotating speed and moment of torsion causes the variation of fuel consume.That is to say, when motor when a constant power is provided to hydraulic pump, in case rotating speed changes, moment of torsion, power all can change, fuel consume is than also can change thereupon.Its Changing Pattern satisfies formula N=T*n/9550 (N: power; T: moment of torsion; N: rotating speed).Often have the minimum of oil consumption ratio at intermediate speed for motor, occurrence is for different motors difference to some extent.When engine operation during at high rotating speed, because bent axle rotates at a high speed, the wearing and tearing aggravation of piston and cylinder will have more energy consumption on rubbing, and cause capacity usage ratio lower.And under the low-speed big situation, because rotating speed is low, load is big, performances such as gas handling system, turbocharger all can descend in varying degrees, cause the input stroke coefficient low, and burn deterioration, fuel utilization ratio are extremely low.The details that each parameter changes can be referring to universal characteristic curve of engine.
Excavator is set H, S, L, four kinds of mode of operations of B, respectively corresponding total power, economy, standard, broken four kinds of mode of operations.Wherein, the S pattern realizes the working speed of motor at 1550rpm-1750rpm, and the overwhelming majority drops on the low oil consumption district of universal characteristic curve of engine, thereby realizes energy-conservation target.The pairing rotating speed of moment of torsion under the H pattern is 1750rpm-1950rpm.
For only considering operating efficiency, not considering the occasion of fuel economy, use the H pattern to carry out work, motor is devoted oneself to work with peak power; And, then use the S pattern to carry out work for the occasion that operating efficiency and economy are laid equal stress on, realize this moment reaching the highest operating efficiency with minimum oil consumption.Both are compared, oil consumption ratio 3%-4%, and that the slow-speed of revolution of S pattern can realize is low more about 6% than the oil consumption of H pattern, total energy-saving effect is about original 9%-10%.Its energy-saving effect is obvious.
On the other hand, the motor of present domestic hydraulic crawler excavator use is most for satisfying the straight spray mechanical speed governors formula diesel engines of 2 stage Abgasgesetzs.Thereby this motor drives flyball rotation pulling tooth bar through flywheel and moves the change distributive value in the rotation speed change process; Therefore there is hysteresis quality in the distributive value that causes in rotation speed change when changing, and the rotation speed change of moment often can't in time be regulated distributive value.Frequent load variations will cause the rotating speed frequent variations, also with regard to the inevasible oil spout wasting phenomenon that exists.
The oil consumption that the frequent variations of load causes is higher, if obviously be unpractical through changing load.Because load is fully by the external environment decision, the soft or hard of soil property, and the pressure demand difference of turning round, walk, excavate exercises all cause load to change constantly, can't be invariable.
Summary of the invention
The technical problem that the utility model will solve provides a kind of simple in structure, reliability energy-saving control device of hydraulic crawler excavator motor preferably.
In order to solve the problems of the technologies described above; The utility model provides a kind of energy-saving control device of hydraulic crawler excavator motor; It comprises: central control unit; The power mode selector that links to each other with this central control unit, Throttle Opening Control unit and be used for the speed probe of detection of engine rotating speed, motor links to each other with hydraulic pump through shaft coupling, and it is characterized in that: said central control unit is connected with the proportion magnetic valve that is used for controlling according to the rotating speed of said motor the flow of said hydraulic pump.
Said central control unit is connected with the throttle actuator that is used for controlling according to the output signal of said power mode selector said engine throttle.
Said central control unit is connected with the accelerator open degree sensor of the accelerator open degree that is used to detect said throttle actuator.
The technique scheme of the utility model is compared prior art and is had the following advantages: (1) engine output=hydraulic power absorbed power=P*Q* η, and wherein P is a pressure, and Q is a flow, and η is a volumetric efficiency.Though P is decided by uncontrollable its size of load, Q can realize that flow changes with the variation of pressure through using variable pump, as long as make the variation of its Changing Pattern and P be inverse ratio, promptly the P*Q=definite value can realize that the hydraulic pressure power absorbed is invariable.So just can realize that engine output is invariable, engine speed is stabilized in setting value, thereby can not occur having wasted because of the oil consumption that rotation speed change causes.The energy-saving control device of the hydraulic crawler excavator motor of the utility model through Q is in time changed with the variation of P, is realized permanent power control.But also there is hysteresis quality in the variation of flow.If the product of flow Q and pressure P is a constant, the P-Q curve just should be a hyperbola so, and is still, actual because the technical limitations of controlled changes in flow rate can only be passed through large and small two springs control.Therefore, the load of motor is not invariable in the actual conditions, just in a small range, fluctuates.For this fluctuation range is continued to dwindle, the hydraulic pump proportion of utilization electromagnetic valve in the utility model is regulated.The Principles of Regulation of this equipment are that through the variation of sensor detecting engine speed, in case exceed the director demon range of set value, promptly the Comparative Examples electromagnetic valve sends an electric current, makes the swash plate pivot angle of main pump make respective change, realizes the variation of flow.When outer load changed, pump required input moment of torsion changed, and engine speed is respective change also, regulated the flow of pump through the control ratio electromagnetic valve current, thereby made engine speed remain on former setting value.Simultaneously, through improving the electric-control system response speed, make the engine speed change fluctuation littler, energy-saving effect is better.This adjustment helps making the working speed of motor to be stable in the small range, and is different with user's operational circumstances according to industrial and mineral, and oil consumption will be than reducing 5%-10% before the control.Other conservation measuress: auto idle speed, mechanical idling, dipper regeneration, minus flow control, pressure cut off control.
Description of drawings
For the content that makes the utility model is more clearly understood, below basis specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation, wherein
Fig. 1 is the structural representation of the energy-saving control device of the hydraulic crawler excavator motor among the embodiment.
The specific embodiment
See Fig. 1; The energy-saving control device of the hydraulic crawler excavator motor of present embodiment; Comprise: central control unit; The power mode selector that links to each other with this central control unit, Throttle Opening Control unit and be used for the speed probe of detection of engine rotating speed, motor links to each other with hydraulic pump through shaft coupling, and it is characterized in that: said central control unit is connected with the proportion magnetic valve that is used for controlling according to the rotating speed of said motor the flow of said hydraulic pump.
Said central control unit is connected with the throttle actuator that is used for controlling according to the output signal of said power mode selector said engine throttle.Said central control unit is connected with the accelerator open degree sensor of the accelerator open degree that is used to detect said throttle actuator.
Obviously, the foregoing description only be for explain clearly that the utility model does for example, and be not to be qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation that these spirit that belong to the utility model are extended out or change still are among the protection domain of the utility model.
Claims (3)
1. the energy-saving control device of a hydraulic crawler excavator motor; Comprise: central control unit; The power mode selector that links to each other with this central control unit, Throttle Opening Control unit and be used for the speed probe of detection of engine rotating speed; Motor links to each other with hydraulic pump through shaft coupling, it is characterized in that:
Said central control unit is connected with the proportion magnetic valve that is used for controlling according to the rotating speed of said motor the flow of said hydraulic pump.
2. the energy-saving control device of hydraulic crawler excavator motor according to claim 1 is characterized in that: said central control unit is connected with the throttle actuator that is used for controlling according to the output signal of said power mode selector said engine throttle.
3. the energy-saving control device of hydraulic crawler excavator motor according to claim 2 is characterized in that: said central control unit is connected with the accelerator open degree sensor of the accelerator open degree that is used to detect said throttle actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120157644U CN202131631U (en) | 2011-05-17 | 2011-05-17 | Energy saving controlling device of hydraulic excavator engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120157644U CN202131631U (en) | 2011-05-17 | 2011-05-17 | Energy saving controlling device of hydraulic excavator engine |
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| Publication Number | Publication Date |
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| CN202131631U true CN202131631U (en) | 2012-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201120157644U Expired - Fee Related CN202131631U (en) | 2011-05-17 | 2011-05-17 | Energy saving controlling device of hydraulic excavator engine |
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| CN (1) | CN202131631U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535570A (en) * | 2012-02-03 | 2012-07-04 | 山重建机(济宁)有限公司 | Electro-hydraulic integral control device for engine throttle of hydraulic digging machine |
| CN103388348A (en) * | 2013-07-31 | 2013-11-13 | 贵州詹阳动力重工有限公司 | Energy-saving control system for excavator |
| CN103397678A (en) * | 2013-08-13 | 2013-11-20 | 南京工业大学 | Energy-saving system and method for power matching between engine and hydraulic pump |
| WO2013185444A1 (en) * | 2012-06-15 | 2013-12-19 | 湖南三一智能控制设备有限公司 | Energy-saving speed increasing control system and method for excavator |
| CN106232906A (en) * | 2014-04-15 | 2016-12-14 | 沃尔沃建造设备有限公司 | Device and control method thereof for the electromotor and hydraulic pump that control engineering machinery |
| CN106394246A (en) * | 2016-11-02 | 2017-02-15 | 贵州詹阳动力重工有限公司 | Control system and control method for synchronization of hydraulic motors, as well as dual-vehicle-body all-terrain vehicle |
| CN109778937A (en) * | 2018-12-14 | 2019-05-21 | 徐州徐工挖掘机械有限公司 | A kind of self-optimizing control device and method based on broken operating condition |
| CN116450654A (en) * | 2023-06-12 | 2023-07-18 | 北谷电子股份有限公司 | Energy consumption optimization method and system for excavator based on N-T database |
-
2011
- 2011-05-17 CN CN201120157644U patent/CN202131631U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102535570A (en) * | 2012-02-03 | 2012-07-04 | 山重建机(济宁)有限公司 | Electro-hydraulic integral control device for engine throttle of hydraulic digging machine |
| WO2013185444A1 (en) * | 2012-06-15 | 2013-12-19 | 湖南三一智能控制设备有限公司 | Energy-saving speed increasing control system and method for excavator |
| CN103388348A (en) * | 2013-07-31 | 2013-11-13 | 贵州詹阳动力重工有限公司 | Energy-saving control system for excavator |
| CN103397678A (en) * | 2013-08-13 | 2013-11-20 | 南京工业大学 | Energy-saving system and method for power matching between engine and hydraulic pump |
| CN103397678B (en) * | 2013-08-13 | 2015-07-01 | 南京工业大学 | Energy-saving system and method for power matching between engine and hydraulic pump |
| CN106232906A (en) * | 2014-04-15 | 2016-12-14 | 沃尔沃建造设备有限公司 | Device and control method thereof for the electromotor and hydraulic pump that control engineering machinery |
| CN106394246A (en) * | 2016-11-02 | 2017-02-15 | 贵州詹阳动力重工有限公司 | Control system and control method for synchronization of hydraulic motors, as well as dual-vehicle-body all-terrain vehicle |
| CN106394246B (en) * | 2016-11-02 | 2019-04-12 | 贵州詹阳动力重工有限公司 | Hydraulic motor synchronous control system and control method, double car body all-terrain vehicle |
| CN109778937A (en) * | 2018-12-14 | 2019-05-21 | 徐州徐工挖掘机械有限公司 | A kind of self-optimizing control device and method based on broken operating condition |
| CN109778937B (en) * | 2018-12-14 | 2021-09-10 | 徐州徐工挖掘机械有限公司 | Self-optimization control device and method based on crushing working condition |
| CN116450654A (en) * | 2023-06-12 | 2023-07-18 | 北谷电子股份有限公司 | Energy consumption optimization method and system for excavator based on N-T database |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20150517 |
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| EXPY | Termination of patent right or utility model |