CN102352786A - Water sucking type pressurized ultramicro hydraulic oil filter controller system - Google Patents
Water sucking type pressurized ultramicro hydraulic oil filter controller system Download PDFInfo
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- CN102352786A CN102352786A CN2011101811857A CN201110181185A CN102352786A CN 102352786 A CN102352786 A CN 102352786A CN 2011101811857 A CN2011101811857 A CN 2011101811857A CN 201110181185 A CN201110181185 A CN 201110181185A CN 102352786 A CN102352786 A CN 102352786A
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Abstract
The invention relates to a water sucking type pressurized ultramicro hydraulic oil filter controller system. An internal combustion engine has a lubricating system, and oil is circulated through the lubricating system; and the system comprises a variable flow rate pump for circulating the oil through the lubricating system, a filter for removing coal smoke from the oil circulating through the lubricating system, and a controller for determining when the coal smoke is required to be removed from the oil, and controlling the pump to provide enough flow rate to effectively remove impurities such as the coal dust and the like from the oil when determining that the coal smoke is required to be removed.
Description
Technical field
The invention belongs to the control technique of construction machinery product, relate to the automatic control technology field, particularly a kind of suction type pressurization ultra micro hydraulic oil filter controller.
Background technique
To be used for internal-combustion engine especially one of the restriction of the longer service intervals of diesel engine be at the specific run conditioning process, the accumulation of excessive coal smoke in lubricant oil.Usually use secondary filter to remove these coal smokes, so that long service intervals can be provided, but in order to allow more effective filtration, what oil pump need be when this maintenance intervals require is big.
This is because having the oil pump of conventional arrangement is by engine-driven gear type element, and pump is equipped with the pressure escape valve that is back to pump as assembly through this pump unit or from main channel.These pump unit are not very effective, because their flow velocity is to be decided by engine speed, this escape valve only guarantees not have the generation of unfavorable pressure.A kind of known secondary filter configuration is that aflter-fillter is connected to bypass flow channel, and when needs prevented that unfavorable pressure is supplied to motor, this bypass flow channel was back to oil tank with oil from pump without the bearing of motor.Aflter-fillter is generally the form of centrifugal filter, and in this configuration, only when bypass channel is opened, and the oil aflter-fillter of will flowing through.Because viscosity is to the influence of the pressure that pump produced, the oil pump bypass is opened when hanging down engine speed when oil is colder, but when oil is warmmer, only when higher engine speed, opens.When oil was cold oil, because high viscosity, centrifugal filter can not worked very effectively, causes the low outlet pressure of nozzle, provides the low rate of filtration.The lower rate of filtration has produced low centripetal force, has therefore reduced filter efficiency.High viscosity has also reduced the migration of particle, prevents that most particles from arriving walls and be separated.When oil was deep fat, pump only flowed with higher speed in relief circuit, and corresponding heat disorder state is provided with size so that supplementary loss is minimum because pump is had to.This just means, can not be through aflter-fillter filter oil effectively for the motor user of most of time operation motor under the hot state of low speed.
In addition, more multithread is moved so that the operation aflter-fillter will cause supplementary loss to increase and the reduction fuel economy because need produce, and has therefore reduced through the increase economic gain that service intervals obtained.。
Summary of the invention
The present invention be directed to above problem, suction type pressurization ultra micro hydraulic oil filter controller system is provided.
The technical solution adopted for the present invention to solve the technical problems is:
According to a first aspect of the invention; Provide a kind of and removed the system of coal smoke from the oil that is used for lubricated internal-combustion engine, this internal-combustion engine has lubrication system, and oil circulates through this lubrication system; Wherein, said system comprises: through the variable flow rate pump of this lubrication system recycle oil; From filter through removal coal smoke this lubrication system circuit oil; Determine when the controller that from oil, to remove coal smoke, and when definite coal smoke need be removed, this controller control pump so that being provided, enough flows from oil, effectively removed coal smoke.
Controller can be exercisable, and the minimum flow velocity of the oil that from pump, comes out is provided with control pump.
Controller can be exercisable, and the predetermined flow velocity of the oil that from pump, comes out is provided with control pump.
System also comprises at least one oil temperature sensor; To provide the signal of indicating fuel-displaced temperature to controller; And when oily temperature is higher than predetermined minimum temperature, controller only through operating pumps from oil, removing coal smoke, thereby controller can be operated to control the removal of coal smoke in the oil.Filter can be a by pass filter, and can use the flow of valve with the oil of control inflow filter.Valve can be a pressure controlled valve, and it is configured to make that oil can only flow in the filter when oil pressure is higher than predetermined pressure.This system may further include at least one oil pressure sensor, and with the signal of pressure that near the oil of the indication pump discharge is provided to controller, and valve can be controlled only when institute's measuring pressure is higher than minimum predetermined pressure, just to open through controller.
Perhaps; Filter can be at pump and be used for the full flow filter between the oil cooler of motor; And when confirming that coal smoke need be removed from oil, valve control return path is provided and is used for oil is back to from the position between filter and the oil cooler inlet of pump.Valve can be the pressure escape valve, and it is set to make when the oil pressure that leaves filter is higher than predetermined pressure, and oil can only flow back in the inlet of pump.Perhaps; This system may further include at least one oil pressure sensor; So that the pressure of the signal oil that indication is flowed out from pump to controller to be provided, valve can be controlled only when institute's measuring pressure is higher than minimum predetermined pressure, just to open through controller, flow back in the inlet of pump to allow oil.
In above-mentioned two kinds of situation, filter can be the vortex filter.According to a second aspect of the invention; Provide a kind of and removed the method for coal smoke from the oil that is used for lubricated internal-combustion engine; This internal-combustion engine has lubrication system; Oil can circulate through this lubrication system by the variable flow rate pump; And from filter through removal coal smoke this lubrication system circuit oil; This method comprises and determines when and need from oil, remove coal smoke; And when determining coal smoke and need from oil, remove; Operating pumps is so that oil is removed filter with enough flows coal smoke of flowing through, thereby from oil, can effectively remove coal smoke.This method may further include:, only make when oily temperature is higher than predetermined minimum temperature that oil is with enough flows coal smoke removal filter of flowing through through operating pumps, thereby from oil, can remove coal smoke effectively.According to a third aspect of the invention we, a kind of filtration system that is used for fluid circuit is provided, this fluid circuit has the device that needs supplied with pressurised fluid, and wherein, this filtration system comprises: pressure fluid is fed to the variable flow rate pump in this device; From fluid, remove the filter of chip; And determine when the controller that need from fluid, remove chip, and when definite chip need be removed, this controller control variable flow rate pump from fluid, effectively removed chip so that enough flows to be provided.Filter can be centrifugal filter or vortex filter.Filter can be connected to the main flow loop from pump through valve.Valve can be a pressure escape valve or by the control valve of controller function.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is further specified.
Fig. 1 is first embodiment's block diagram according to the suction type pressurization ultra micro hydraulic oil filter controller system of first aspect present invention;
Fig. 2 is second embodiment's block diagram according to the suction type pressurization ultra micro hydraulic oil filter controller system of first aspect present invention;
Fig. 3 is the 3rd embodiment's block diagram according to the suction type pressurization ultra micro hydraulic oil filter controller system of first aspect present invention;
Fig. 4 is the flow chart according to the signal of the method for second aspect present invention.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment suction type pressurization ultra micro hydraulic oil filter controller system of the present invention is done further to describe.
Especially with reference to Fig. 1, show have make oil from oil tank or oil pan 6 in motor 5 circulation be back to the diesel engine 5 of the lubrication system in the oil pan 6 with lubricate and with oil.Oil cooler 7 is the parts that are included in the lubrication system with full flow filter 8, removes chip with cold oil and from oil.Provide one from through removing the system of coal smoke the lubrication system circuit oil, this system comprise controller temperature, quality (quality) and level sensor 12, pump discharge pressure sensor 20 engine oil pressure sensors 21, variable flow rate pump 15, centrifugal filter form be used for selectively remove the by pass filter 16 of coal smoke and the mobile solenoid valve 17 that oil the by pass filter 16 is led in control from oil.Controller 10 is arranged to receive the input signal from other various sensor (not shown) of temperature, quality and level sensor 12, engine oil pressure sensor 21, pump discharge pressure sensor 20 and 5 relevant with motor, as to be used for confirming motor 5 speed and load, with the signal of handling these receptions and based on receive SC sigmal control variable flow rate pump 15 and solenoid valve 17 operation.By pass filter 16 in an embodiment is centrifugal filters, but other filter type that can from oil, remove coal smoke also can use.In this case, variable flow rate pump 15 is the rotary vane type pumps with a plurality of predetermined flow velocitys.Yet, should be understood that flow velocity can also can adopt by the continually varying pump between the lower limit and the upper limit.Controller 10 receives the signal that is used for determining when that coal smoke need be removed from oil.When having gathered the coal smoke of specified level in the oil, or when motor 5 when a large amount of coal smokes are transferred to the state in the oil under running probably, coal smoke possibly need removal.Be used for confirming the removed real process of coal smoke needs be we be entitled as " motor coal smoke management system " at batch theme of applying for, do not elaborate at this.Should confirm and to realize through the programs that are included in the controller 10, or use separate controller to realize and offer controller 10 that under both of these case, controller 10 received and is used for confirming the signal whether coal smoke need be removed as input signal.In this example, signal is to be arranged in the storage of controller 10 with the sign form.If sign is set to 1, coal smoke needs to remove so, if sign is set to 0, coal smoke does not need to remove so.In the course of normal operation of motor 5, when coal smoke is not must from oil, remove the time, controller 10 control pumps 15 to be providing motor 5 needed desired pressures, and select only flow velocity that this pressure is provided.That is to say, comprise that the operational condition of the motor 5 of the oil pressure in the motor 5 that is detected by pressure transducer 21 is received by controller 10, and pump 15 correspondingly controlled, so that required oil pressure in the motor 5 to be provided.Required oil pressure can the data from be stored in look-up table obtain, or use calculates with engine speed and the relevant relevant pre-defined algorithm of oil pressure of load.When controller 10 has confirmed that coal smoke need be removed from oil, thereby it optimally removes coal smoke with coal smoke removal pattern control pump 15 from oil.First step of this process is to confirm that innage is in predetermined temperature.When using centrifugal filter, be even more important, because this type filter is invalid when oil is very sticking.If confirm that from temperature, quality and level sensor 12 oil is enough warm, be used for the effectively enough low viscosity of filtration thereby have, then next step is that control pump 15 is to produce predetermined flow velocity.Select flow velocity so that the most effectively using of by pass filter 16 to be provided substantially, that is, through the flow velocity of by pass filter 16, it can cause centrifugal filter with enough high-speed rotations, to produce effective removal of coal smoke.What use in an embodiment is to have the pump that a plurality of discrete flow velocitys are set, and the flow velocity that comes out from pump 15 is set to the flow velocity that produces predetermined flow velocity is set.Because motor 5 also needs the supply of oil, efficient lubricated to keep, so the flow velocity that comes out from pump 15 will be higher than only being used for filter 16 desired flow rates.When outlet pressure sensor 20 expressions have reached predetermined minimum pressure; Valve 17 is opened by controller 10; To allow the oil by pass filter 16 of flowing through; Guaranteeing to flow to flowing of by pass filter 16 so can not produce; Up to enough pump pressure and flow occurring, with the speed of quick raising by pass filter 16.Valve 17 can be a kind of can the adjusting through by pass filter 16 with through the type of the flow of the oil of full flow filter 8 and the oil cooler 7 main sleeve flow channel in the motor 5; Also can be such type:, allow predetermined oil leakage to flow in the motor 5 when valve 17 is opened when being provided to mobile in the by pass filter 16.In the both of these case, it all is very important keeping and getting into mobile the generation with the damage that prevents motor 5 oily in the motor 5.Because the flow velocity of by pass filter 16 needed oil requires pump 15 to produce than to be used for lubricated a lot of flow velocity and the pressure of the needed height of purpose of normal engine; Therefore; Even, also still have enough pressure to keep effective engine lubrication when 16 free-flows of oil process by pass filter.When controller 10 confirmed that coal smokes no longer need be removed from oil, it can be operated with cut-off valve 17, cut off the oil supplying of leading to by pass filter 16, and the flow velocity of pump 15 set was reduced to the required normal operational settings of motor 5.The output that should be appreciated that pump 15 is not subjected to the control of motor 5 speed, and therefore, pump 15 can be by operation so that the high flow rate of oil to be provided, even when motor 5 idling.So guarantee no matter the dutycycle of motor 5 operations how, coal smoke can both be removed from oil, as long as oil is not too sticking.Only when determining coal smoke and need from oil, remove; Use by pass filter 16, can have energy consumption still less than legacy system like this, in legacy system; No matter filtering, coal smoke whether needs, also no matter whether oil is enough hot to allow effectively to filter the by pass filter of just oil being flowed through.In addition, by controlling the pump in the bypass
filter 16 is used to provide flow through the bypass flow through the optimization of the filter 16, and only when the oil has a sufficiently low viscosity allows filtering generated, so that bypass the most efficient use of the filter 16 is implemented on .Should be appreciated that so operation institute time-consuming is short more under the flow velocity of this lifting, the energy of consumption is few more because need be with filtering than the high a lot of flow velocity of traditional lubrication.Should be appreciated that this system can use the oil temperature sensor that can adopt any type that can measure the oil temperature, although this system is particularly useful for diesel engine, it also can be applied in and need from oil, remove in any motor of coal smoke.
With reference to Fig. 2 show one in many aspects with above-mentioned Fig. 1 in identical system.Unique remarkable difference is that solenoid valve 17 is replaced by spring controlled pressure escape valve 117, and in this case, pump 115 is continuous variable output type pumps.System turns round with above-mentioned similar mode, and wherein pump 115 is used for oil is offered motor 5 with conventional pressure and flow velocity, has confirmed that up to controller 10 coal smoke needs to remove, and has confirmed that oil is warm enough high to allow to produce effectively filtration.Yet, in this case, valve 117 not being carried out working control, it is just opened when the pressure that comes self-pumping 115 rises on the predeterminated level to allow flowing through by pass filter 16.In this embodiment, this is to provide minimum flow velocity to realize through control pump 115: the output through increasing pump 115 equals with the flow velocity that reaches a known pump and flow out or less times greater than the level of the required minimum flow velocity of by pass filter 16.This minimum flow velocity will provide a ratio to open the bigger pressure of valve 117 required pressure at the pump discharge place, like this, come the flow velocity of self-pumping 115 just to obtain increasing, and will reach valve 117 and open the point to allow oil to flow through by pass filter 16.As previously mentioned, this flow velocity or 5 required the wanting greatly of pressure ratio lubricating engine, therefore, the oily by pass filter 16 of only can when coal smoke is obliged to go to remove, flowing through, and be in the speed that can effectively use by pass filter 16.Although the present invention describes with reference to centrifugal filter; Wherein be known that; Effectively filtration only occurs in and is higher than the predetermined oil flow velocity and when innage during in predetermined temperature; Also can use other type filter; Vortex filter for example; Wherein, fast rotational removes coal smoke when making oil flow through filter.In this filter, oil viscosity also needs lower so that effectively filter, and needs high flow rate.Also can use the filter of diaphragm type; Because through adopting such filter, it has enough meticulous structure to catch tiny coal soot, need use significant amount of energy through the pressure loss of this filter; And when oil viscosity is low, use this filter also to be easy to filter oil.
Show the 3rd embodiment of system according to the invention with reference to Fig. 3, it is in many aspects with aforementioned identical, and the filter arrangement that is to be used for from oil, removing coal smoke with aforementioned difference is on the position of circulating fully, rather than in bypass channel.Such just as the front, diesel engine 5 has makes oil be recycled to the motor 5 to play lubrication and oil is back to the lubrication system in the oil pan 6 from oil tank or oil pan 6.Oil cooler 7 is the parts that are included in the lubrication system with traditional full flow filter 8, with cooling and from oil, remove chip.From comprising the series connection soot filter 9 of controller 10, temperature, quality and level sensor 12, pump discharge pressure sensor 20, engine oil pressure sensor 21, variable flow rate pump 215, vortex filter form through the system of removing coal smoke the lubrication system circuit oil and controlling the valve 217 that flows of getting back to the oil in the pump 15 through bypass channel.When coal smoke taking place remove, valve 217 is opened, and it can be on this position, to be subjected to pressure controlled escape valve in the lubrication system or electronic control that can controlled device 10.Under two kinds of situation, the effect of valve 217 is the ingress that under the situation of oil cooler 7 of not flowing through, most of oil are back to pump 215, in oily filter process, keeping oil phase to high temperature, thereby improves filter efficiency.Open at valve 217, thus allow the oil of high flow rate return pump 215 during, the oil of enough flow velocitys is supplied to motor 5 to lubricate to guarantee to keep enough always with continuing.Here the vortex filter of indication is such filter: the fluid of this filter of flowing through is rotated to form strong vortex, and this strong vortex deposits coal soot through centripetal acceleration on the filter outer wall.An advantage of this filter is unlike the conventional membrane filter, and this filter can be given birth under the situation of significantly restriction at not convection current movable property, from oil, removes fine particle.The controller 10 as previously arranged, as received from the temperature, the quality and level sensor 12, engine oil pressure sensor
pump outlet pressure sensor 20 and associated with the engine 5 can be used to determine the engine speed and load various other sensors (not shown) of the input signals to process these signals and the received signals based on these received variable flow control operation of the pump 215.In this case, variable flow rate pump 215 is the rotary pumps with constant rotational speed, and through changing the displacement of pump 215 each rotations, flow velocity is changed.Pump 215 has a plurality of predetermined flow velocitys, and it is selected motor 5 to be provided and to filter required flow velocity.Controller 10 receives the input signal that is used for determining when that coal smoke need be removed from oil.Signal is arranged in the storage of controller 10 with the sign form.If sign is set to 1, coal smoke needs to remove so, if sign is set to 0, coal smoke does not need to remove so.In the normal course of operation of motor 5, when coal smoke is not must from oil, remove the time, controller 10 controls or set pump 15 to provide motor 5 needed desired pressures.That is to say, comprise that the operational condition by the motor 5 of the oil pressure in the pressure transducer 21 detected motors 5 is received by controller 10, and pump 215 is configured to provide the flow velocity of motor 5 required oil pressure.Required oil pressure can be stored in the look-up table, maybe can use calculate with the pre-defined algorithm of engine speed with the relevant oil pressure of loading.In this operator scheme, the flow of the vortex filter 9 of flowing through is low relatively, therefore, in fact in this operator scheme, does not have coal smoke from oil, to remove.Because the structure of vortex filter 9 drops to minimum to the restriction of flowing, it is included in not influence of energy in fact required to the traditional lubrication that offers motor 5 in the oil lubrication system.When controller 10 has confirmed that coal smoke need be removed from oil, thereby it optimally removes coal smoke with coal smoke removal mode initialization pump 215 from oil.The first step of this process is to confirm innage in predetermined temperature, if confirm that from temperature, quality and level sensor 12 oil is enough warm when producing effective filtration, next step is exactly that control pump 215 is to produce predetermined flow velocity.Select flow velocity so that the most effectively using of vortex filter 9 to be provided substantially, that is, the flow velocity of the vortex filter 9 of flowing through will cause the oil of process to rotate with sufficiently high speed, to produce effective removal of coal smoke.Be to be understood that; If come the flow velocity of self-pumping 21 à to change in a continuous manner; Flow velocity can be to produce the minimum flow velocity accurately that desirable optimization is filtered so; But; If come the flow velocity of self-pumping 215 to change with stepped mode; So in this case, pump 215 will be set to use such output flow velocity, and this output flow velocity provides and produced the effectively identical or high slightly flow velocity of the required predetermined minimum flow velocity of filtration with minimal energy consumption.If what use is the pump of continuous variable output type; Come the flow velocity of self-pumping 215 can use pump discharge pressure sensor 20 to measure indirectly; Then pump 215 can be controlled to produce desirable flow velocity based on institute's measuring pressure; If but use is like the cascade output type pump in the present embodiment, pump only must be configured to produce the required output setting of desirable flow velocity so.Because the flow velocity of the oil that by pass filter 16 is required requires to be produced than lubricated a lot of flow velocity and the pressure of the required height of purpose of conventional engine by pump 215; Therefore; Even, also still have enough pressure to keep effective engine lubrication when oil freely flows back in the pump 215 through bypass channel.When controller 10 was determined coal smoke and no longer need from oil, be removed, it can be operated reducing the flow velocity of pump 215, and this is self acting stop valve 217, because pressure can be reduced to and kept valve and open under required 7 levels.Should be appreciated that as previously mentioned the output of pump 215 is not subjected to the control of motor 5 speed, therefore, even when motor 5 idling, pump 215 also can be by operation to produce high flow rate.So just guarantee no matter the dutycycle of motor 5 operation how, coal smoke can both be removed from oil, as long as oil has enough low viscosity.Such just as previous embodiment, pump only must be removed and oil is operated with high flow rate when having the temperature that is suitable for filtering at coal smoke, therefore, has practiced thrift energy and has improved the fuel economy of motor.
With reference to Fig. 4, show control variable flow rate pump from the oil of lubricating engine, to remove the method for coal smoke.This method begins at step 100 place, and at step 100 place, motor is in and activates or starting state.This method advances to step 110; In step 110; Confirm whether coal smoke need be removed from oil; Does this realize through adopting following test to inquire about sign: Flag＞0? If; Proceed to step 120 so; Otherwise return step 110 at step 120 place; Test below this method is used confirms whether oily temperature is higher than predetermined minimum temperature: T＞Tmin wherein; T representes the oil temperature of minimum temperature for selection for the measured temperature p Tmin of oil; Under this temperature, oil viscosity is enough low to allow from oil, effectively filtering coal smoke.If measured temperature is lower than this minimum temperature, this method is returned step 110 so, if but be higher than minimum temperature, then this method proceeds to step 130, and wherein, pump is controlled to provide the required flow velocity of effective filtration of from oil, removing coal smoke.Then, this method is returned step 110, and whether reexamine coal smoke still needs to remove.This can be at the fixed time after, maybe can become the part in the continuous process, in this process, coal in the oil, cigarette content receives continuous monitoring, and also continuous renewal of the state of sign.Therefore; Generally speaking; Be to be understood that; The invention provides many advantages; Comprise: the speed of not considering motor; Can both filter out coal smoke at any time; When oil viscosity is higher, prevent to filter; Always to obtain effectively filtration, the controlled coal smoke of optimizing with acquisition of pressure that allows to be used to filter is removed, and allows the speed of centrifugal filter controlled so that good filtration to be provided; Or allow to filter with maximization through the flow velocity of vortex filter is adjusted; And only when coal smoke need be removed really, use and filter required high flow rate, thereby reduced energy consumption.Should be appreciated that to the invention is not restricted to from oil, remove coal smoke, can also be applicable to that other is used to have the filtration system of the fluid circuit of the device that needs supplied with pressurised fluid.In this case, filtration system can comprise: the variable flow rate pump that pressure fluid is fed to said device; From fluid, remove the filter of chip; With determine when the controller that need from fluid, remove chip, and when determining chip and need remove, this controller control variable flow rate pump from fluid, effectively removes chip so that enough flows to be provided.Filter can be centrifugal filter or vortex filter or need the filter of high flow rate with other any kind that effective filtration is provided.Filter can be connected on the main flow loop from pump through valve, and in this case, valve can be a pressure escape valve or by the control valve of controller function.Said device for example can be but need be not limited to speed changer, differential mechanism or the axle of supplying lubricating oil, or need the oil hydraulic motor of supplied with pressurised fluid.
Above-described embodiment, the present invention embodiment a kind of more preferably just, common variation that those skilled in the art carries out in technological scheme of the present invention and replacement all should be included in protection scope of the present invention.
Claims (3)
1. suction type pressurization ultra micro hydraulic oil filter controller system, this internal-combustion engine has lubrication system, and oil circulates through this lubrication system, and wherein, this system comprises: the variable flow rate pump that comes recycle oil through lubrication system; From carry out removing the circuit oil filter of coal smoke through this lubrication system; Determine when the controller that need from oil, remove coal smoke, when definite coal smoke need be removed, this controller control pump from oil, removed effectively coal smoke so that enough flows to be provided.
2. according to the suction type pressurization ultra micro hydraulic oil filter controller system of claim 1, wherein, this controller can be operated with control pump, so that the minimum flow velocity of the oil that from pump, flows out to be provided.
3. according to the suction type pressurization ultra micro hydraulic oil filter controller system of claim 1, wherein, this controller can be operated with control pump, so that the predetermined flow velocity of the oil that from pump, flows out to be provided.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101811857A CN102352786A (en) | 2011-06-30 | 2011-06-30 | Water sucking type pressurized ultramicro hydraulic oil filter controller system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101811857A CN102352786A (en) | 2011-06-30 | 2011-06-30 | Water sucking type pressurized ultramicro hydraulic oil filter controller system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356991A (en) * | 2020-03-04 | 2021-09-07 | 一汽解放汽车有限公司 | Piston cooling system with pressure detection function and filtering function |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789676A (en) * | 2004-10-06 | 2006-06-21 | 福特环球技术公司 | Soot filter control system |
| CN201575005U (en) * | 2009-12-30 | 2010-09-08 | 中国神华能源股份有限公司 | Apparatus for removing hydraulic system impurity |
-
2011
- 2011-06-30 CN CN2011101811857A patent/CN102352786A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1789676A (en) * | 2004-10-06 | 2006-06-21 | 福特环球技术公司 | Soot filter control system |
| CN201575005U (en) * | 2009-12-30 | 2010-09-08 | 中国神华能源股份有限公司 | Apparatus for removing hydraulic system impurity |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113356991A (en) * | 2020-03-04 | 2021-09-07 | 一汽解放汽车有限公司 | Piston cooling system with pressure detection function and filtering function |
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Application publication date: 20120215 |