CN103591060A - Engineering machine and hydraulic control oil line thereof - Google Patents
Engineering machine and hydraulic control oil line thereof Download PDFInfo
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- CN103591060A CN103591060A CN201310594103.0A CN201310594103A CN103591060A CN 103591060 A CN103591060 A CN 103591060A CN 201310594103 A CN201310594103 A CN 201310594103A CN 103591060 A CN103591060 A CN 103591060A
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Abstract
The invention discloses an engineering machine and a hydraulic control oil line of the engineering machine. The hydraulic control oil line of the engineering machine comprises an engine, a first oil pump and a controller, wherein the engine is connected with the first oil pump; the oil pressure of an oil outlet of the first oil pump is greater than that of an oil inlet. The hydraulic control oil line of the engineering machine further comprises a common rail device and a pressure sensor, an oil inlet of the common rail device is connected with the oil outlet of the first oil pump, an oil outlet of the common rail device is connected with a working oil cylinder, the pressure sensor is used for sensing the oil pressure information in rails of the common rail device and sending the oil pressure information to the controller, and the controller is used for controlling the rotation speed of the engine according to the oil pressure information and controlling one oil rail in the common rail device to supply oil for the working oil cylinder according to the displacement information of an operation handle of the engineering machine. The hydraulic control oil line can make the engine operate at an economical rotation speed for a long time, energy conservation is achieved, emission is reduced, and at the same time, the requirement for hydraulic oil of large instant loads of the engineering machine can be met.
Description
Technical field
The present invention relates to hydraulic circuit field, particularly a kind of engineering machinery hydraulic oil circuit control and there is its engineering machinery.
Background technique
At present, engineering machinery on market (as excavator) hydraulic circuit has various ways, wherein as shown in Figure 1 a kind of, motor 1 ' provide power is provided, drive hydraulic-pressure pump 2 ' work that fuel tank 4 ' middle hydraulic oil is pumped with to operating cylinder 6 ' fuel feeding, hydraulic oil push the work forward oil cylinder 6 ' in piston move reciprocatingly, realize the exercises of engineering machinery, as for excavator, these actions comprise: the excavation of the excavation of swing arm lifting and decline, dipper and unloading, scraper bowl and unloading, revolution and walking etc.Certainly, in actual motion, also have two or more action operation simultaneously, the demand of hydraulic oil when meeting this high load working condition, general medium-sized or above excavator all fill two hydraulic-pressure pumps 2 ', oil pump is in the market the adjustable fuel delivery that often turns, pump fuel-flow control solenoid valve 3 in figure ' control, when motor 1 ' overburdening, reduce oil pump 2 ' often turn fuel delivery, prevent motor 1 ' flame-out and make motor 1 ' balance be operated in setting rotating speed.In addition, can by flow solenoid valve 5 ' adjusting flow to operating cylinder 6 ' flow.
Above-mentioned motor 1 ' directly provide the mode of hydraulic oil to have the following disadvantages with oil pump 2 ' combination:
(1) known according to above-mentioned excavator working procedure, it has scraper bowl unloading, degradation low-power requirements under swing arm, also there is swing arm to promote and add this high-power demand of revolution, during driver's operation in order to guarantee working efficiency, often select the gear work that can meet maximum load demand, generally speaking the corresponding a certain fixing engine speed of each gear, for this reason, the long-time gear in maximum load causes the waste of motor acting, increased oil consumption, engine long time service also can be brought the deterioration of discharge in non-economy rotating speed district simultaneously;
(2) fluctuation of engine speed can cause the fluctuation of fuel feeding, thereby makes operating cylinder action irregularity.
Summary of the invention
In view of this, the present invention proposes a kind of engineering machinery hydraulic oil circuit control and has its engineering machinery, to avoid the problems such as high energy consumption and minimizing engine speed that the engine long time causes under higher load condition to change the impact on charge oil pressure.
On the one hand, a kind of engineering machinery hydraulic oil circuit control is provided, is used to operating cylinder fuel feeding, described engineering machinery hydraulic oil circuit control comprises: motor, the first oil pump, controller, described motor is connected with described the first oil pump, for driving described the first oil pump pump oil; The oil pressure of described the first oil pump oil outlet is greater than the oil pressure of filler opening, and described engineering machinery hydraulic oil circuit control also comprises: common-rail system and pressure transducer; Described common-rail system comprises at least two oily rails, and the pressure in each oily rail is unequal, and the filler opening of described common-rail system connects the oil outlet of described the first oil pump, and in described common-rail system, the oil outlet of each oily rail connects described operating cylinder; Described pressure transducer is for the oil pressure information in common-rail system rail described in sensing, and described oil pressure information is sent to described controller; Described controller is for control the rotating speed of described motor according to described oil pressure information, and an oily rail of controlling in described common-rail system according to the displacement information of the operating grip of engineering machinery is described operating cylinder fuel feeding.
Further, described common-rail system comprises the first oily rail, pressure controlled valve, the second oily rail, first flow control unit, the second flow controlling unit; The filler opening of described the first oily rail connects the oil outlet of described the first oil pump, and the oil outlet of described the first oily rail connects described operating cylinder by described first flow control unit; The filler opening of described the second oily rail is connected with described the first oily rail by described pressure controlled valve, and the oil outlet of described the second oily rail connects described operating cylinder by described the second flow controlling unit; Pressure in described the second oily rail is less than the pressure in described the first oily rail; Described pressure transducer comprises that described the first pressure transducer and the second pressure transducer are all connected with described controller for the first pressure transducer of oil pressure information in the first oily rail described in sensing and for the second pressure transducer of oil pressure information in the second oily rail described in sensing; Described controller is for passing through to control the aperture of described first flow control unit and the second flow controlling unit according to the displacement information of described operating grip, the first oily rail or the second oily rail of controlling in described common-rail system of take is described operating cylinder fuel feeding.
Further, described pressure controlled valve is pressure electromagnetic device control valve, and it is connected with described controller, for the control information sending according to described controller, adjusts self aperture.
Further, described first flow control unit and the second flow controlling unit are flow control electromagnetic valve.
Further, described engineering machinery hydraulic oil circuit control also comprises the displacement transducer for the actual displacement of operating cylinder described in sensing; Described displacement transducer connects described controller; Described controller is for determining the displacement of targets of described operating cylinder according to the displacement information of described operating grip, and compare described actual displacement and described displacement of targets and the aperture of controlling described first flow control unit and the second flow controlling unit according to comparison result.
Further, described engineering machinery hydraulic oil circuit control also comprises at least one in the first pressure-limit valve, the second pressure-limit valve and the 3rd pressure-limit valve; The two ends of described the first pressure-limit valve connect respectively oil outlet and the return opening of the fuel tank that is used to described the first oil pump feed; The two ends of described the second pressure-limit valve connect respectively the return opening of described the first oily rail and described fuel tank; The two ends of described the 3rd pressure-limit valve connect respectively the return opening of described the second oily rail and described fuel tank.
Further, described engineering machinery hydraulic oil circuit control also comprises pump fuel-flow control solenoid valve, and the filler opening of described the first oil pump is connected with the oil outlet of described fuel tank by described pump fuel-flow control solenoid valve.
Further, be provided with the second oil pump in described fuel tank, the oil outlet of described the second oil pump is as the oil outlet of described fuel tank, and connects described pump fuel-flow control solenoid valve.
On the other hand, the invention provides a kind of engineering machinery, be provided with described engineering machinery hydraulic oil circuit control.
Further, described engineering machinery comprises excavator.
Engineering machinery hydraulic oil circuit control of the present invention is by increasing common-rail system in the middle of the oil pump in prior art and operating cylinder, the brand-new oil supply system forming with pressure transducer for oil pressure in its rail of sensing, this common-rail system can separate control of engine speed and the hydraulic pressure demand of operating cylinder independent, control of engine speed is directly controlled by the actual pressure of common-rail system, the hydraulic pressure demand of operating cylinder is controlled according to operating grip, and then can make engine long time selection economic speed operation realize energy-conservation and reduce and discharge, can meet the hydraulic oil demand of engineering machinery large load of moment simultaneously, due to the pressure stability of common-rail system, the pressure source of operating cylinder is determined by common-rail system, engine speed is changed very little on the impact of charge oil pressure simultaneously.
Because this project machinery has the corresponding technique effect of above-mentioned engineering machinery hydraulic oil circuit control, repeat no more.
Accompanying drawing explanation
The accompanying drawing that forms a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of existing engineering machinery hydraulic oil circuit control;
The structural representation of the engineering machinery hydraulic oil circuit control that Fig. 2 provides for the embodiment of the present invention.
Embodiment
It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the present invention can combine mutually.Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.
The structural representation of the engineering machinery hydraulic oil circuit control that Fig. 2 provides for the embodiment of the present invention; As shown in Figure 2, this project mechanical-hydraulic oil circuit control is used to operating cylinder 11 fuel feeding, and this project mechanical-hydraulic oil circuit control comprises: motor 1, the oily rail 6 of the oily rail 5, second of the first oil pump 2, first, the first pressure transducer 71, the second pressure transducer 72, pressure controlled valve 8, first flow control unit 101, the second flow controlling unit 102, controller 13.
Wherein, motor 1 is connected with the first oil pump 2, for driving the first oil pump 2 pump oil; The oil pressure of the first oil pump 2 oil outlets is greater than the oil pressure (this first oil pump 2 can be called to high pressure oil pump) of filler opening, the filler opening of the first oily rail 5 connects the oil outlet of the first oil pump 2, and the oil outlet of the first oily rail 5 connects operating cylinder 11 by first flow control unit 101; The filler opening of the second oily rail 6 is connected with the first oily rail 5 by pressure controlled valve 8, and the oil outlet of the second oily rail 6 connects operating cylinder 11 by the second flow controlling unit 102; Pressure in the second oily rail 6 rails is less than the pressure in the first oily rail 5 rails, and correspondingly, the second oily rail 6 and the first oily rail 5 can be called low pressure oil rail and high pressure oil rail; The first pressure transducer 71 is for oil pressure information in oily rail 5 rails of sensing first, the second pressure transducer 72 is for oil pressure information in oily rail 6 rails of sensing second, the first pressure transducer 71 and the second pressure transducer 72 are all connected (in Fig. 1, in order to simplify diagram, only showing the annexation of the second pressure transducer 72 and controller 13) with controller 13.
Above-mentioned controller 13 is for according to the rotating speed of oil pressure information control engine 1, and for according to the displacement information of operating grip by controlling the aperture of first flow control unit 101 and the second flow controlling unit 102, and then take that to control the oily rail 6 of the first oily rail 5 or the second be operating cylinder 11 fuel feeding.
Preferably, pressure controlled valve 8 can be pressure electromagnetic device control valve, and this pressure electromagnetic device control valve is connected (in order to simplify diagram, this annexation is not shown) with controller 13, for the control information sending according to controller 13, adjusts self aperture.Like this, by the control information of controller 13, can realize the automatic adjusting of the second oily rail 6 rail internal pressures.
Preferably, for realizing the automatic adjusting that flows into operating cylinder 11 flows, first flow control unit 101 and the second flow controlling unit 102 are flow control electromagnetic valve.
Preferably, above-mentioned engineering machinery hydraulic oil circuit control can also comprise displacement transducer 12, for the actual displacement of sensing operating cylinder 11; This displacement transducer 12 is connected with controller 13, controller 13 is for determining the displacement of targets of operating cylinder 11 according to the displacement information of operating grip, and compare actual displacement and displacement of targets, and according to the aperture of comparison result control first flow control unit 101 and the second flow controlling unit 102.Like this, by the sensing of actual displacement, can be according to the real time execution situation of operating cylinder 11, by the aperture of control first flow control unit 101 and the second flow controlling unit 102, selecting the oily rail 6 of the first oily rail 5 or the second is operating cylinder 11 fuel feeding, and can control fuel supply flow rate, and then the accurate control of realization to operating cylinder 11 motions, even if avoid, oil cylinder 11 in prior art as shown in Figure 1 ' position reaches capacity, oil pump 2 ' also can continue the defect that fuel feeding causes energy dissipation, or avoid prior art as shown in Figure 1 oil cylinder 11 ' position reaches capacity, hydraulic oil flows out and the energy loss brought from the bypass (scheming not shown) of throttling.
Preferably, above-mentioned engineering machinery hydraulic oil circuit control can also comprise at least one in the first pressure-limit valve 41, the second pressure-limit valve 42 and the 3rd pressure-limit valve 43; The two ends of the first pressure-limit valve 41 connect respectively oil outlet and the return opening of fuel tank 13; The two ends of the second pressure-limit valve 42 connect respectively the return opening of the first oily rail 5 and fuel tank 13; The two ends of the 3rd pressure-limit valve 43 connect respectively the return opening of the second oily rail 6 and fuel tank 13.Wherein, this fuel tank 13 is used to the first oil pump 2 fuel feeding.When engineering machinery (as excavator) is zero load, the hydraulic oil of fuel tank 13 oil outlets can flow back to fuel tank 13 by the first pressure-limit valve 41 like this; The second pressure-limit valve 42 and the 3rd pressure-limit valve 43 play safety protection effect to the first oily rail 5 and the second oily rail 6 respectively.
During specific operation, engineering machinery hydraulic oil circuit control can also comprise that the filler opening of pump fuel-flow control solenoid valve 3, the first oil pumps 2 is connected with the oil outlet of fuel tank 13 by pump fuel-flow control solenoid valve 3.The interior oil outlet of the second oil pump 9, the second oil pumps 9 that can also be provided with of fuel tank 13 is as the oil outlet of fuel tank 13, and connects pump fuel-flow control solenoid valve 3.
The working principle of above-mentioned engineering machinery hydraulic oil circuit control is summarized as follows: can set according to the model of engineering machinery and actual demand the steady pressure value of the first oily rail 5 and the second oily rail 6, pressure setting when the first oily rail 5 is stablized is 35Mpa, and oil pressure when the second oily rail 6 is stablized is set as 16Mpa; The low pressure oil that the first oil pump 2 provides the second oil pump 9 under the drive of motor 1 is converted into high pressure oil pump and delivers to the first oily rail 5, the rotating speed of motor 1 is determined according to the actual pressure in the first oily rail 5, when as zero load in engineering machinery, pressure stability can be controlled at engine idle, the aperture that simultaneously reduces pump fuel-flow control solenoid valve 3 is even closed, and from the low pressure oil of the second oil pump 9, can flow back to fuel tank 13 by the first pressure-limit valve 41; When the rail pressure of the first oily rail 5 fluctuates within the scope of the following 2Mpa-7Mpa of setting value, (implication of this economic speed value is according to universal characteristic curve of engine engine speed can be set in to economic speed value, control of engine speed is interval at the low rotating speed of fuel consumption values) operation, when exceeding 7Mpa with respect to setting value fluctuation, the rail pressure of the first oily rail 5 can the short time control of engine speed be moved in the operation point of high-power and high-speed, until the rail pressure of the first oily rail 5 is stable; 42 of second pressure-limit valves of the first oily rail 5 just play a role when system exception causes the rail pressure of the first oily rail 5 not controlled, same, and 43 of the 3rd pressure-limit valves of the second oily rail 6 just play a role when system exception causes the rail pressure of the second oily rail 6 not controlled.After oil pressure in the first oily rail 5 and the second oily rail 6 is set up, controller 13 is determined the displacement of targets of operating cylinder 11 according to the displacement signal of operating grip, and according to the value of feedback of displacement transducer 12, control the break-make of flow controlling unit 101 and 102 and select the oily rail 6 of the first oily rail 5 or the second, realize the smooth-going operation of high speed of operating cylinder 11.As can be seen here, the control core of controller 13 is controlled the first oily rail 5 and the second oily rail 6 rail pressures are stabilized in setting value exactly.
Be understandable that, in above-described embodiment, engineering machinery hydraulic oil circuit control adopts a kind of concrete form of common-rail system, comprises the first oily rail 5, the oily rail 6 of pressure controlled valve 8, second, first flow control unit 101, the second flow controlling unit 102; Wherein, the different pressures that can realize in the first oily rail 5 and the second oily rail 6 by pressure controlled valve 8 regulates; First flow control unit 101 and the second flow controlling unit 102 regulate the flow of the first oily rail 5 and the second oily rail 6 oil outlets for convenience, can accept or reject according to actual needs; According to actual needs, the form that specifically arranges of common-rail system can change, as adjust the quantity of oily rail and the poor implementation of each oily rail pressure etc., concrete as: in can common-rail system, the quantity of oily rail be set to three, one of them oily rail is directly connected with the oil outlet of the first oil pump 2 by pressure controlled valve, another oily rail is directly connected with the oil outlet of the first oil pump 2, and the 3rd oily rail is directly connected with the oil outlet of fuel tank 13; Certainly, corresponding to the change of oily rail quantity, for the also corresponding variation of quantity of the pressure transducer of oil pressure information in sensing oil rail.Two operating cylinders 11 in embodiment illustrated in fig. 2, have schematically been provided, correspondingly, the first oily rail 5 has two delivery outlets and the second oily rail 6 to have respectively corresponding two operating cylinders 11 of two delivery outlets, on each delivery outlet of the first oily rail 5, be provided with on each delivery outlet of the oily rail 6 of first flow control unit 101, the second and be provided with the second flow controlling unit 102; During specific operation, the quantity of operating cylinder 11 can be adjusted as required, and the output port number of the first oily rail 5 and the second oily rail 6 and the quantity of first flow control unit 101 and the second flow controlling unit 102 are also adjusted thereupon.
Engineering machinery hydraulic oil circuit control of the present invention is by increasing the first oily rail and the second oily rail in the middle of the oil pump in prior art and operating cylinder, the brand-new oil supply system forming with pressure transducer for two oily rails of sensing, wherein the first oily rail is by oil pump feed, the second oily rail is by the first oily rail fuel feeding, this hydraulic oil secondary altogether rail can separate control of engine speed and the hydraulic pressure demand of operating cylinder independent, control of engine speed is directly controlled by the actual pressure of the first oily rail, the hydraulic pressure demand of operating cylinder is controlled according to operating grip, and then can make engine long time selection economic speed operation realize energy-conservation and reduce and discharge, can meet the hydraulic oil demand of engineering machinery large load of moment simultaneously, preferably, utilize the signal of the displacement transducer of operating cylinder to feed back, adopting the common rail of secondary and the combination of operating cylinder displacement transducer to realize accurately controls operating cylinder, after being put in place, oil cylinder carries out the control of fuel delivery, prevent energy loss, make the action of oil cylinder smooth-going controlled, increase the travelling comfort of driver's operation.
In a kind of unshowned embodiment, the present invention also provides a kind of engineering machinery, is provided with above-mentioned engineering machinery hydraulic oil circuit control.Specific operation are that this project machinery includes but not limited to excavator.Because this project machinery has the corresponding technique effect of above-mentioned hydraulic control oil circuit, repeat no more.
The foregoing is only preferred embodiment of the present invention, in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. an engineering machinery hydraulic oil circuit control, be used to operating cylinder (11) fuel feeding, described engineering machinery hydraulic oil circuit control comprises: motor (1), the first oil pump (2), controller (13), described motor (1) is connected with described the first oil pump (2), for driving described the first oil pump (2) pump oil; The oil pressure of described the first oil pump (2) oil outlet is greater than the oil pressure of filler opening, it is characterized in that, described engineering machinery hydraulic oil circuit control also comprises: common-rail system and pressure transducer;
Described common-rail system comprises at least two oily rails, and the pressure in each oily rail is unequal, and the filler opening of described common-rail system connects the oil outlet of described the first oil pump (2), and in described common-rail system, the oil outlet of each oily rail connects described operating cylinder (11);
Described pressure transducer is for the oil pressure information in common-rail system rail described in sensing, and described oil pressure information is sent to described controller (13);
Described controller (13) is for control the rotating speed of described motor (1) according to described oil pressure information, and an oily rail of controlling in described common-rail system according to the displacement information of the operating grip of engineering machinery is described operating cylinder (11) fuel feeding.
2. engineering machinery hydraulic oil circuit control according to claim 1, it is characterized in that, described common-rail system comprises the first oily rail (5), pressure controlled valve (8), the second oily rail (6), first flow control unit (101), the second flow controlling unit (102); The filler opening of described the first oily rail (5) connects the oil outlet of described the first oil pump (2), and the oil outlet of described the first oily rail (5) connects described operating cylinder (11) by described first flow control unit (101); The filler opening of described the second oily rail (6) is connected with described the first oily rail (5) by described pressure controlled valve (8), and the oil outlet of described the second oily rail (6) connects described operating cylinder (11) by described the second flow controlling unit (102); Pressure in described the second oily rail (6) rail is less than the pressure in described the first oily rail (5) rail;
Described pressure transducer comprises that described the first pressure transducer (71) and the second pressure transducer (72) are all connected with described controller (13) for first pressure transducer (71) of oil pressure information in the first oily rail (5) rail described in sensing and for second pressure transducer (72) of oil pressure information in the second oily rail (6) rail described in sensing;
Described controller (13) is for passing through to control the aperture of described first flow control unit (101) and the second flow controlling unit (102) according to the displacement information of described operating grip, the first oily rail (5) or the second oily rail (6) of controlling in described common-rail system of take is described operating cylinder (11) fuel feeding.
3. engineering machinery hydraulic oil circuit control according to claim 2, it is characterized in that, described pressure controlled valve (8) is pressure electromagnetic device control valve, and it is connected with described controller (13), for the control information sending according to described controller (13), adjusts self aperture.
4. engineering machinery hydraulic oil circuit control according to claim 3, is characterized in that, described first flow control unit (101) and the second flow controlling unit (102) are flow control electromagnetic valve.
5. according to engineering machinery hydraulic oil circuit control described in any one in claim 2-4, it is characterized in that, also comprise the displacement transducer (12) for the actual displacement of operating cylinder described in sensing (11); Described displacement transducer (12) connects described controller (13);
Described controller (13) is for determining the displacement of targets of described operating cylinder (11) according to the displacement information of described operating grip, and compare described actual displacement and described displacement of targets and the aperture of controlling described first flow control unit (101) and the second flow controlling unit (102) according to comparison result.
6. according to the oil circuit control of engineering machinery hydraulic described in claim 5, it is characterized in that, also comprise at least one in the first pressure-limit valve (41), the second pressure-limit valve (42) and the 3rd pressure-limit valve (43);
The two ends of described the first pressure-limit valve (41) connect respectively oil outlet and the return opening of the fuel tank (13) that is used to described the first oil pump (2) fuel feeding;
The two ends of described the second pressure-limit valve (42) connect respectively the return opening of described the first oily rail (5) and described fuel tank (13);
The two ends of described the 3rd pressure-limit valve (43) connect respectively the return opening of described the second oily rail (6) and described fuel tank (13).
7. according to the oil circuit control of engineering machinery hydraulic described in claim 6, it is characterized in that, also comprise pump fuel-flow control solenoid valve (3), the filler opening of described the first oil pump (2) is connected with the oil outlet of described fuel tank (13) by described pump fuel-flow control solenoid valve (3).
8. engineering machinery hydraulic oil circuit control according to claim 7, it is characterized in that, in described fuel tank (13), be provided with the second oil pump (9), the oil outlet of described the second oil pump (9) is as the oil outlet of described fuel tank (13), and connects described pump fuel-flow control solenoid valve (3).
9. an engineering machinery, is characterized in that, is provided with engineering machinery hydraulic oil circuit control as described in any one in claim 1-8.
10. engineering machinery according to claim 9, is characterized in that, it comprises excavator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310594103.0A CN103591060B (en) | 2013-11-21 | 2013-11-21 | Engineering machinery and hydraulic control oil circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310594103.0A CN103591060B (en) | 2013-11-21 | 2013-11-21 | Engineering machinery and hydraulic control oil circuit thereof |
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| CN103591060A true CN103591060A (en) | 2014-02-19 |
| CN103591060B CN103591060B (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310594103.0A Active CN103591060B (en) | 2013-11-21 | 2013-11-21 | Engineering machinery and hydraulic control oil circuit thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457567A (en) * | 2014-07-23 | 2017-02-22 | 谷歌公司 | Predictively adjustable hydraulic pressure rails |
| CN113123890A (en) * | 2021-05-07 | 2021-07-16 | 华中科技大学 | double-ECU high-pressure common rail fuel control system and method for highly-intensified diesel engine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001055961A (en) * | 1999-08-11 | 2001-02-27 | Mitsubishi Electric Corp | High pressure fuel supplying device |
| CN1621678A (en) * | 2003-11-28 | 2005-06-01 | 株式会社电装 | Fuel injection device having two separate common rails |
| CN2795470Y (en) * | 2005-01-20 | 2006-07-12 | 武汉理工大学 | Medium voltage common rail electric control system test table for combined mobile diesel engine |
| US20070272204A1 (en) * | 2006-05-24 | 2007-11-29 | Gibson Dennis H | Multi-source fuel system having grouped injector pressure control |
| US20100147268A1 (en) * | 2008-12-17 | 2010-06-17 | Stingele David | Fuel injection system for an internal combustion engine |
| CN101975098A (en) * | 2010-09-30 | 2011-02-16 | 哈尔滨工程大学 | Camless electrohydraulic variable valve timing system based on fuel medium |
| CN102777302A (en) * | 2012-07-23 | 2012-11-14 | 中国兵器工业集团第七0研究所 | Method for driving parameter optimization experiment of high-pressure common-rail high-speed electromagnetic valve |
-
2013
- 2013-11-21 CN CN201310594103.0A patent/CN103591060B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001055961A (en) * | 1999-08-11 | 2001-02-27 | Mitsubishi Electric Corp | High pressure fuel supplying device |
| CN1621678A (en) * | 2003-11-28 | 2005-06-01 | 株式会社电装 | Fuel injection device having two separate common rails |
| CN2795470Y (en) * | 2005-01-20 | 2006-07-12 | 武汉理工大学 | Medium voltage common rail electric control system test table for combined mobile diesel engine |
| US20070272204A1 (en) * | 2006-05-24 | 2007-11-29 | Gibson Dennis H | Multi-source fuel system having grouped injector pressure control |
| US20100147268A1 (en) * | 2008-12-17 | 2010-06-17 | Stingele David | Fuel injection system for an internal combustion engine |
| CN101975098A (en) * | 2010-09-30 | 2011-02-16 | 哈尔滨工程大学 | Camless electrohydraulic variable valve timing system based on fuel medium |
| CN102777302A (en) * | 2012-07-23 | 2012-11-14 | 中国兵器工业集团第七0研究所 | Method for driving parameter optimization experiment of high-pressure common-rail high-speed electromagnetic valve |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106457567A (en) * | 2014-07-23 | 2017-02-22 | 谷歌公司 | Predictively adjustable hydraulic pressure rails |
| CN110000774A (en) * | 2014-07-23 | 2019-07-12 | 波士顿动力公司 | The hydraulic rail of predictability adjustment |
| CN106457567B (en) * | 2014-07-23 | 2019-10-01 | 波士顿动力公司 | The hydraulic rail of predictability adjustment |
| US11077898B2 (en) | 2014-07-23 | 2021-08-03 | Boston Dynamics, Inc. | Predictively adjustable hydraulic pressure rails |
| CN110000774B (en) * | 2014-07-23 | 2022-03-15 | 波士顿动力公司 | Predictably adjustable hydraulic rail |
| CN113123890A (en) * | 2021-05-07 | 2021-07-16 | 华中科技大学 | double-ECU high-pressure common rail fuel control system and method for highly-intensified diesel engine |
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| Publication number | Publication date |
|---|---|
| CN103591060B (en) | 2016-02-24 |
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