CN102330759A - Hydraulic system and hybrid power vehicle comprising same - Google Patents
Hydraulic system and hybrid power vehicle comprising same Download PDFInfo
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- CN102330759A CN102330759A CN2010102248145A CN201010224814A CN102330759A CN 102330759 A CN102330759 A CN 102330759A CN 2010102248145 A CN2010102248145 A CN 2010102248145A CN 201010224814 A CN201010224814 A CN 201010224814A CN 102330759 A CN102330759 A CN 102330759A
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Abstract
The invention relates to a hydraulic system, which comprises an overall proportional pressure valve, a first proportional pressure valve, a second proportional pressure valve and a third proportional pressure valve, wherein the first proportional pressure valve is combined with the overall proportional pressure valve for controlling the movement of a piston arranged in a first clutch control oil cylinder communicated with the fluid of the first proportional pressure valve, so the disconnected/connected state of a first clutch connected with the first clutch control oil cylinder is controlled; the second proportional pressure valve is combined with the overall proportional pressure valve for controlling the movement of a piston arranged in a second clutch control oil cylinder communicated with the fluid of the second proportional pressure valve, so the disconnected/connected state of a second clutch connected with the second clutch control oil cylinder is controlled; and the third proportional pressure valve is combined with the overall proportional pressure valve for controlling the movement of a piston arranged in a synchronizer control oil cylinder communicated with the fluid of the third proportional pressure valve, so the position of a synchronizer connected with the synchronizer control oil cylinder is controlled, and finally, the switching and combination between different motive power sources and the switching between gears of a hybrid power vehicle are realized.
Description
[technical field]
The present invention relates to hydraulic system.Particularly, the present invention relates to be used for handling a plurality of clutches of hybrid vehicle transmission and the hydraulic system of synchronizer.
[background technique]
Vehicle has also brought " energy consumption, environmental pollution " two large problems when offering convenience to people.Each big vehicle manufacturer has released the motor vehicle driven by mixed power of the internal-combustion engine conjunction with motor of energy-conservation and environmental protection respectively for this reason.For example, AM General vehicle company has released Chevrolet VOLT motor vehicle driven by mixed power, and BYD company has released F3DM type motor vehicle driven by mixed power.This type motor vehicle driven by mixed power also is called as plug-in hybrid vehicle.The mixed power of plug-in hybrid vehicle mainly is made up of with one or two motors a relatively little motor of discharge capacity; Wherein motor is responsible for when electrokinetic cell energy and power ratio are higher, realizing that pure electric-powered output and braking energy reclaim generally speaking; When electrokinetic cell energy and power drop to a predefined value, realize engine start, generate electricity or participate in function such as motivational drive directly through motor.
In the prior art, the drive system of above-mentioned plug-in hybrid vehicle has multiple mode of operation.For example its drive system can be operated in electric-only mode, this moment only motor as the power source of transmission system; It also can be operated under the series model, and this moment, motor and integrated actuating electric generator provided electric energy, and only motor is as the power source of transmission system; It can also be operated under the paralleling model in addition, and this moment, motor and motor were jointly as the power source of transmission system.Plug-in hybrid vehicle has the power source of mixing; Thereby its transmission system need have the transmission system that is connected with motor with motor and integrated actuating electric generator; This transmission system comprises the first clutch that is connected with motor and integrated actuating electric generator, the second clutch that is connected with motor, and the synchronizer that is used to shift gears that is connected with first and second clutches.
The transmission system of plug-in hybrid vehicle need have the hydraulic system that adapts with it with the complex work mode operation, promptly needs a kind ofly can handle a plurality of clutches that have in the transmission system that complicated machinery arranges and the hydraulic system of synchronizer.
[summary of the invention]
The purpose of this invention is to provide and a kind ofly can handle a plurality of clutches that have in the hybrid vehicle transmission that complicated machinery arranges and the hydraulic system of synchronizer.
The object of the invention is achieved through following technological scheme.Particularly, a technological scheme of the present invention provides a kind of hydraulic system, and it comprises: first in-line that is connected with accumulator with oil groove respectively, and wherein accumulator is arranged on the oil groove downstream along first in-line, is used to store the hydraulic oil from oil groove; Be arranged on the toatl proportion pressure valve in accumulator downstream along first in-line, be used for integrally control flows, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer through its pressure; First proportional pressure valve that is connected in parallel to each other and connects, second proportional pressure valve and the 3rd proportional pressure valve with the toatl proportion pressure valve; Moving of the piston of the first clutch control oil cylinder of first proportional pressure valve associating toatl proportion pressure valve control series connection with it; Thereby the clutch state to the first clutch that is connected with first clutch control oil cylinder is controlled, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer; Moving of piston in the second clutch control oil cylinder of second proportional pressure valve associating toatl proportion pressure valve control series connection with it; Thereby the clutch state to the second clutch that is connected with second clutch control oil cylinder is controlled, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer; Moving of piston in the synchronizer control oil cylinder of the 3rd proportional pressure valve associating toatl proportion pressure valve control passing ratio Flow valve series connection with it; And to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer and position transducer; The 3rd proportional pressure valve makes the pressure of synchronizer control oil cylinder keep stable at first ratio pressure and second proportional pressure valve in to Clutch Control operation of oil cylinde process separately, thereby realizes the stable control to the position of the synchronizer that is connected with synchronizer control oil cylinder; And with the return line of the first in-line tandem; Return line is used for accepting the hydraulic oil of the accumulator, toatl proportion pressure valve, first proportional pressure valve, second proportional pressure valve and the 3rd proportional pressure valve that are communicated with its fluid, and hydraulic oil wherein is back in the oil groove.
According to technique scheme; Wherein between toatl proportion pressure valve and accumulator tie point and oil groove, be provided with at least one first filter and at least one second filter; Wherein at least one second filter is arranged on the downstream of at least one first filter, the size of the particulate matter in the hydraulic oil that the size of the particulate matter in the hydraulic oil that at least one second filter allows to pass through allows to pass through less than at least one first filter.
According to technique scheme; Wherein between at least one first filter and at least one second filter, be provided with oil hydraulic pump by motor driven; Oil hydraulic pump comes out to pass through successively at least one first filter and at least one second filter with hydraulic oil from the oil groove pumping, thereby makes the hydraulic oil of process double filtration get into the accumulator or the toatl proportion pressure valve of flowing through through one-way valve.
According to technique scheme; Wherein hydraulic system also comprises the pressure-relief valve that is communicated with first in-line and return line fluid; With the pressure of the hydraulic oil in convenient first in-line during greater than first pressure threshold set; Make pressure-relief valve open, thereby the hydraulic oil in first in-line is discharged in the return line, and then make hydraulic oil be back in the oil groove.
According to technique scheme, wherein when the pressure of accumulator place hydraulic oil during less than second pressure threshold set, the running of the control unit control motor of hydraulic system is so that be pumped into the hydraulic oil of expectation in the accumulator through the oil hydraulic pump that motor drives.
According to technique scheme; Wherein hydraulic system also comprises the valve of safeguarding that is communicated with first in-line and return line fluid; When breaking down with convenient hydraulic system; Through safeguarding that valve makes the hydraulic oil in first in-line be discharged into return line, thereby under atmospheric pressure realize Maintenance of Hydraulic System.
According to technique scheme, wherein synchronizer control oil cylinder is can two-way oil-filled and mobile piston cylinder.
According to technique scheme; Wherein at first proportional pressure valve and second proportional pressure valve when it breaks down; Hydraulic oil in first clutch control oil cylinder and the second clutch control oil cylinder is back in first in-line through the preparation pipeline that is provided with one-way valve that the hydraulic oil in supplying separately passes through respectively, and then is back in the return line through the toatl proportion pressure valve.
According to technique scheme; Wherein toatl proportion pressure valve, first proportional pressure valve, second proportional pressure valve and the 3rd proportional pressure valve are the solenoid valve of two-bit triplet; They include inlet opening, delivery outlet and refluxing opening separately, and wherein their refluxing opening all is connected in return line; The inlet opening of toatl proportion pressure valve is connected in accumulator and oil groove; The inlet opening of first proportional pressure valve, second proportional pressure valve and the 3rd proportional pressure valve is connected in the delivery outlet of toatl proportion pressure valve with parallel way; The delivery outlet of first proportional pressure valve is connected in first clutch control oil cylinder; The delivery outlet of second proportional pressure valve is connected in second clutch control oil cylinder; The delivery outlet passing ratio Flow valve of the 3rd proportional pressure valve is connected in synchronizer control oil cylinder, and synchronizer control oil cylinder both sides are provided with different piston areas.
According to technique scheme, wherein the toatl proportion pressure valve can be safety valve.
According to technique scheme; Wherein pressure transducer be arranged between first proportional pressure valve and the first clutch control oil cylinder, between second proportional pressure valve and the second clutch control oil cylinder and proportional flow control valve control between the oil cylinder with synchronizer, position transducer is arranged on synchronizer and controls between oil cylinder and the synchronizer.
A technological scheme more of the present invention provides a kind of motor vehicle driven by mixed power that comprises above-mentioned hydraulic system; Wherein the transmission system of motor vehicle driven by mixed power comprises the first clutch that is connected with integrated actuating electric generator with motor, the second clutch that is connected with drive motor, carries out the synchronizer that gear is selected through transmission shaft and gear mechanism; Hybrid vehicle transmission is used for vehicle power is sent to wheel; Wherein the position of the clutch state of the first clutch of motor vehicle driven by mixed power and second clutch and synchronizer is controlled through described hydraulic system, thereby realizes the level and smooth gearshift of motor vehicle driven by mixed power.
Benefit of the present invention is:, guaranteed when automobile hydraulic system breaks down that motor vehicle driven by mixed power can cruising, guarantees vehicle and user's Security owing to adopt the mode of proportional pressure valve and one-way valve combination in this hydraulic system.
Benefit of the present invention is: the toatl proportion pressure valve can realize the adjusting to pressure in first in-line, thereby can reduce the leakage of subsequent element in the hydraulic system, and the toatl proportion pressure valve can be used as safety valve and guarantees security of system in addition.
Benefit of the present invention also is: a plurality of filter joint work, guarantee that the cleanliness of hydraulic oil of each valve (for example one-way valve, proportional pressure valve etc.) in the process hydraulic system is pollution-free, and guaranteed the function of each valve of hydraulic system.In addition multi-filtering also guaranteed to get into other elements and lubrication system in the hydraulic system hydraulic oil through filtration, guaranteed the function of each element.
Benefit of the present invention also is: through usage ratio pressure valve and proportional flow control valve; Realization is to the control of synchronizer control oil cylinder, and then realization realizes the (motion stably of good motion controllability to the stable control of synchronizer; Do not have and combine to impact and noise), thus realize smooth-going gear shift.
Benefit of the present invention also is: this hydraulic system being provided with is safeguarded valve, so that the hydraulic oil in first in-line can be discharged in the return line when safeguarding, thereby has protected each element in the system.
[description of drawings]
With reference to accompanying drawing, disclosure of the present invention will be easier to understand.Those skilled in the art are understood that easily: these accompanying drawings only are used for illustrative purposes, and are not to be intended to protection scope of the present invention is constituted restriction.Among the figure:
Fig. 1 shows the structural representation according to the transmission system of the two clutch synchronization devices gearshift of motor vehicle driven by mixed power of the present invention.
Fig. 2 shows the structural representation of hydraulic system of transmission system of the two clutch synchronization devices gearshift of the motor vehicle driven by mixed power that is used for Fig. 1.
Parts and label list
| 1 | |
| 2 | |
| 3 | Integrated actuating |
| 4 | |
| 5 | Transmission shaft (main shaft) |
| 6 | |
| 7 | Second clutch |
| 8 | Synchronizer |
| 9 | |
| 10 | |
| 20 | |
| 100 | |
| 102 | |
| 104 | Oil |
| 106 | |
| 108 | |
| 110 | First one- |
| 112 | |
| 114 | Pressure- |
| 116 | Safeguard |
| 118 | The toatl |
| 120 | First |
| 122 | First clutch |
| 124 | Second one-way valve |
| 126 | Second |
| 128 | The 3rd one- |
| 130 | Second clutch |
| 132 | The 3rd |
| 134 | Proportional |
| 136 | Synchronizer |
| 200 | First in- |
| 202 | |
| 204 | First connecting |
| 206 | Second connecting |
| 208 | The 3rd connecting |
| 210 | The 4th connecting |
| 212 | The 5th connecting |
| 214 | The 6th connecting |
| 216 | The 7th connecting |
| 218 | The 8th connecting |
| 220 | The 9th connecting |
| 222 | The tenth connecting pipeline |
[embodiment]
Fig. 1-2 and following declarative description specific embodiment of the present invention with the instruction those skilled in the art how to make and use optimal mode of the present invention.In order to instruct inventive principle, simplified or omitted some conventional aspects.Those skilled in the art should understand that the modification that is derived from these embodiments falls within the scope of the invention.Those skilled in the art should understand that following characteristics can combine to form a plurality of modification of the present invention in every way.Thus, the present invention is not limited to following specific embodiment, and is only limited claim and their equivalent.
Fig. 1 shows the structural representation according to the transmission system of the two clutch synchronization devices gearshift of motor vehicle driven by mixed power of the present invention.The transmission system of motor vehicle driven by mixed power as shown in Figure 1 comprises: the first clutch 6 that is connected with integrated actuating electric generator 3 with motor 1, the second clutch 7 that is connected with drive motor 2, transmission shaft (being main shaft) 5, first speed reducer 9, second speed reducer 10 and synchronizer 8.Transmission system is passed through differential mechanism 4 with power transmission to wheel 20.According to a preferred embodiment of the present invention, first clutch 6 is normally open clutch in the transmission system of the motor vehicle driven by mixed power among Fig. 1; Second clutch 7 is the Normally closed type clutch; Synchronizer 8 can slide on main shaft 5, and carries out gear through main shaft 5 and gear mechanism (for example first order speed reducer 9 etc.) and select, and main shaft 5 connects first order speed reducer 9 or second level speed reducer 10 through synchronizer 8.First order speed reducer 9 or second level speed reducer 10 connect differential mechanism 4, and hybrid vehicle transmission transmits power through differential mechanism 4 to wheel 20.For transmission system according to present embodiment; Those skilled in the art are understood that easily: the transmission system of the two clutch synchronization devices combination gearshift of motor vehicle driven by mixed power can turn round under multiple mode of operation, can realize non-power gear shifting function when it switches gear.The synchronization combining control of first clutch 6 and second clutch 7 and synchronizer 8 when guaranteeing gearshift.
Fig. 2 shows a plurality of clutches in the transmission system and the hydraulic system of synchronizer in the control diagram 1.This hydraulic system comprises: oil groove 100; First filter 102; Oil hydraulic pump 104; Motor 106; Second filter 108; First one-way valve 110; Accumulator 112; Pressure-relief valve 114; Safeguard valve 116; Toatl proportion pressure valve 118; First proportional pressure valve 120; First clutch control oil cylinder 122; Second one-way valve 124; Second proportional pressure valve 126; The 3rd one-way valve 128; Second clutch control oil cylinder 130; The 3rd proportional pressure valve 132; Proportional flow control valve 134; Synchronizer control oil cylinder 136; First in-line 200; A plurality of connecting pipeline 204-222; High pressure discharge pipe 202; A plurality of sensors; Control wiring and drive system control unit.Wherein oil groove 100 is used for stores hydraulic pressure oil; First filter 102 is arranged on the downstream of oil groove 100 along first in-line 200; Oil hydraulic pump 104 is arranged on the downstream of first filter 102 along first in-line 200; Thereby motor 106 be used for driving oil hydraulic pump 104 with hydraulic oil from coming out from oil groove 100 pumping; Second filter 108 is arranged on the downstream of oil hydraulic pump 104 along first in-line 200; First one-way valve 110 is arranged on the downstream of second filter 108 along first in-line 200, and toatl proportion pressure valve 118 is arranged on the downstream of first one-way valve 110 along first in-line 200, and the 3rd proportional pressure valve 132 is arranged on the downstream of toatl proportion pressure valve 118 along first in-line 200.Wherein motor 106 is step controllable motor.First filter 102 is fit to filter bigger particulate matter in the hydraulic oil; And second filter 108 is fit to filter smaller particles thing in the hydraulic oil; That is: first filter (102) is a strainer; And second filter (108) is a secondary filter, and the size of particulate matter is less than the size of particulate matter in the hydraulic oil of first filter, 102 filtrations in the hydraulic oil that second filter 108 filters.Need to prove: according to the enlightenment of the foregoing description; Those skilled in the art are understood that the needs according to hydraulic system easily; First more than one filter and second filter with other filter capacities also can be set, and this will drop in protection scope of the present invention also.
As shown in Figure 2, first connecting pipeline 204 is arranged between first one-way valve 110 and the toatl proportion pressure valve 118 along first in-line 200, and is communicated with accumulator 112; One end of second connecting pipeline 206 and the 3rd connecting pipeline 208 is arranged between first one-way valve 110 and the toatl proportion pressure valve 118 along 200 parallel connections of first in-line; The other end of second connecting pipeline 206 and the 3rd connecting pipeline 208 is arranged on the return line 202; Wherein pressure-relief valve 114 is arranged on second connecting pipeline 206; Safeguard that valve 116 is arranged on the 3rd connecting pipeline 208; Wherein pressure-relief valve 114 is opened when the pressure of the hydraulic oil in first in-line 200 surpasses the first predetermined pressure threshold; Thereby make the hydraulic oil in the accumulator 112 and/or first in-line 200 be back in the return line 202 through connecting pipeline 206 and 208; Tandem is in first in-line 200 between the oil hydraulic pump 104 and first filter 102 for return line 202, and this makes that hydraulic oil finally can be back in the oil groove 100 in the return line 202.Safeguard when valve 116 is only during maintenance and maintenance just to be opened, thereby the hydraulic oil in the in-line 200 of winning is back in the return line 202.
As shown in Figure 2, the 4th connecting pipeline 210 and the 5th connecting pipeline 212 are successively set between toatl proportion pressure valve 118 and the 3rd proportional pressure valve 132 along first in-line 200.First proportional pressure valve 120 is arranged on the 4th connecting pipeline 210; The 4th connecting pipeline 210 and first clutch control oil cylinder 122 fluids are communicated with, and first clutch is controlled oil cylinder 122 and connected (not shown in the drawings they between connecting mode) with first clutch 6.Second proportional pressure valve 126 is arranged on the 5th connecting pipeline 212, and the 5th connecting pipeline 212 and second clutch control oil cylinder 130 is connected, and second clutch is controlled oil cylinder 130 and connected (not shown in the drawings they between connecting mode) with second clutch 7.As shown in Figure 2, toatl proportion pressure valve 118, first proportional pressure valve 120, second proportional pressure valve 126 and the 3rd proportional pressure valve 132 are two-position three-way valve, and they include inlet opening, delivery outlet and refluxing opening.The inlet opening of these Proportional valves all is connected on first in-line 200; And the refluxing opening of toatl proportion pressure valve 118, first proportional pressure valve 120 and second proportional pressure valve 126 is connected on the return line 202 through the 8th connecting pipeline 218, the 9th connecting pipeline 220 and the tenth connecting pipeline 222 respectively, and the refluxing opening of the 3rd proportional pressure valve 132 directly is connected on the return line 202.These Proportional valves are the proportional pressure valve of band feedback.Toatl proportion pressure valve 118 is used for the hydraulic oil of the accumulator 112 and first in-line 200 is adjusted to from higher pressure the lower pressure of the downstream workpiece needs of first in-line 200; In addition when first proportional pressure valve 120 and 126 inefficacies of second proportional pressure valve; Toatl proportion pressure valve 118 gets into safety protection pattern (SV); Its refluxing opening is opened, thereby the hydraulic oil in the in-line 200 of winning is back in the return line 202.Need to prove: toatl proportion pressure valve 118 can replace with the cheap a little safety valve of price.Hydraulic oil is to the pressure of the first clutch control oil cylinder 122 that is connected to first clutch 6 in first proportional pressure valve, 120 further adjusting first in-lines 200.Hydraulic oil is to the pressure of the second clutch control oil cylinder 130 that is connected to second clutch 7 in second proportional pressure valve, 126 further adjusting first in-lines 200.The 3rd proportional pressure valve 132, toatl proportion pressure valve 118 and proportional flow control valve 134 joint work control to the pressure and the flow of synchronizer control oil cylinder 136; The 3rd proportional pressure valve 132 also has pressure stabilization function; The 3rd proportional pressure valve 132 makes the pressure of synchronizer control oil cylinder 136 keep stable in first proportional pressure valve 120 and 126 pairs of Clutch Control operation of oil cylinde processes separately of second proportional pressure valve; Thereby make that synchronizer control oil cylinder 136 can stable operation; Then synchronizer 8 can be worked reposefully to make (not shown in the drawings they between connecting mode) that connects with synchronizer control oil cylinder 136, thus the level and smooth gearshift of realization transmission system.Need to prove: those skilled in the art's enlightenment according to the present invention is understood that easily: the present invention can adopt the solenoid valve replacement proportional pressure valve of other kinds, and this also will drop in protection scope of the present invention.
Below will set forth the working principle of first clutch in the hydraulic system 6 and second clutch 7 in detail.Piston in the first clutch control oil cylinder 122 moves forward under the effect of hydraulic oil, makes first clutch 6 combine, and moves backward under the effect of the piston return spring therein in the first clutch control oil cylinder 122, makes first clutch 6 separate.Usually, separate and under first proportional pressure valve 120 can the situation of proper functioning, the hydraulic oil in the first clutch 6 was back in the return line 202 through the refluxing opening of first proportional pressure valve 120 when first clutch 6; And when first proportional pressure valve 120 breaks down; Hydraulic oil in the first clutch control oil cylinder 122 are back in first in-line 200 through the 6th connecting pipeline 214, and and then the refluxing opening through toatl proportion pressure valve 118 be back in the return line 202.Piston in the second clutch control oil cylinder 130 moves under the effect at hydraulic oil backward; Make second clutch 7 separate; And move forward under the effect of the piston return spring therein in the second clutch control oil cylinder 130, make second clutch 7 combine.Because second clutch is the Normally closed type clutch, when second clutch 7 combined, second proportional pressure valve 126 was in the valve port closed condition; And when second proportional pressure valve 126 broke down, the hydraulic oil in the second clutch control oil cylinder 130 was back in first in-line 200 through the 7th connecting pipeline 216, and and then the refluxing opening through toatl proportion pressure valve 118 flow into return line 202.Wherein first, second and the 3rd one-way valve are used for the flow direction of controlled hydraulic system hydraulic oil.
The delivery outlet of the 3rd proportional pressure valve 132 as shown in Figure 2 is connected with the inlet opening of proportional flow control valve 134; The delivery outlet of proportional flow control valve 134 connects with synchronizer control oil cylinder 136; The both sides of synchronizer control oil cylinder 136 are provided with different piston areas; Synchronizer control oil cylinder 136 connects (not shown in the drawings they between connecting mode) with synchronizer 8; The 3rd proportional pressure valve 132 combines the position of proportional flow control valves 134 control synchroes 8, makes synchronizer 8 be on the position of neutral, a grade and second gear.Need to prove:, it will be understood by those skilled in the art that synchronizer 8 also can be in other gears except that neutral, a grade and second gear, and this will drop in protection scope of the present invention also according to embodiment's as shown in Figure 2 enlightenment.
As shown in Figure 2; On pressure-relief valve 114 and the connecting pipeline of safeguarding valve 116, toatl proportion pressure valve 118, first proportional pressure valve 120, second proportional pressure valve 126, the 3rd proportional pressure valve 132, proportional flow control valve 134 and with first clutch control oil cylinder 122, second clutch control oil cylinder 130 and with connecting pipeline that synchronizer control oil cylinder 136 fluids are communicated with on be provided with pressure transducer P/E; And also be provided with the position transducer U/E of the position that is used for sensing synchronizer 8 on synchronizer control oil cylinder 136 and the pipeline that synchronizer 8 is connected; Pressure signal on these each valves of pressure transducer collection or each pipeline also sends these pressure signals to the HYDRAULIC CONTROL SYSTEM unit; And position transducer U/E gathers the position signal of synchronizer 8 and sends position signal to the HYDRAULIC CONTROL SYSTEM unit, communicates by letter with the car load control unit through the CAN bus in the HYDRAULIC CONTROL SYSTEM unit.In addition, when the pressure at accumulator place during less than second pressure threshold set, the running of the control unit control motor of hydraulic system is so that be pumped into the hydraulic oil of expectation in the hydraulic system through the oil hydraulic pump that motor 106 drives.Need to prove: first pressure threshold is greater than second pressure threshold.The HYDRAULIC CONTROL SYSTEM unit is according to the working state of the transmission system of two clutch synchronization devices gearshift; Transmit control signal to motor, oil hydraulic pump and each valve of hydraulic system; Thereby piston is mobile in control first clutch control oil cylinder 122, second clutch control oil cylinder 130 and the synchronizer control oil cylinder 136, so that control first clutch 6 and the clutch state of second clutch 7 and the position of synchronizer 8.Particularly; The HYDRAULIC CONTROL SYSTEM unit can be realized the control to the clutch state of clutch according to the working state of transmission system with the pressure signal that collection comes, and can realize the accurate control to the synchronizer position according to working state, pressure signal and the position signal of transmission system.The HYDRAULIC CONTROL SYSTEM unit adopts step controllable motor, cooperates accumulator and plus signal feedback to realize, has realized the closed loop control of whole system, has reached energy-saving effect simultaneously.The HYDRAULIC CONTROL SYSTEM unit through in Comparative Examples pressure valve and the shift process to the adjusting and the control of motor, realization is to the adjusting of the Operating torque in the clutch working procedure, thereby realizes smooth-going gearshift.
Need to prove: for the transmission system of certain preferred embodiment of the present invention, it also comprises second in-line that need cool off and lubricate synchronizer 8, first speed reducer 9 and second speed reducer 10.Not shown this second in-line in hydraulic system of the present invention.But be understood that easily that to those skilled in the art first in-line and second in-line can adopt with a kind of oil.Need to prove that first in-line and second in-line also can adopt non-oil of the same race.In the above embodiment of the present invention, first in-line is a pressure duct, and second in-line is a low pressure line, and the pressure of hydraulic oil is greater than the pressure of hydraulic oil in second in-line in first in-line.
The invention provides a kind of motor vehicle driven by mixed power that comprises above-mentioned hydraulic system; Wherein the transmission system of motor vehicle driven by mixed power comprises the first clutch that is connected with power source and second clutch, carries out the synchronizer that gear is selected through transmission shaft and gear mechanism; Hybrid vehicle transmission is used for vehicle power is sent to wheel; Wherein the position of the clutch state of the first clutch of motor vehicle driven by mixed power and second clutch and synchronizer is controlled through described hydraulic system, thereby realizes the level and smooth gearshift of motor vehicle driven by mixed power.
Need to prove that those skilled in the art can also carry out many variants to hydraulic system according to the enlightenment of above-mentioned preferential embodiment.For example one of them variant provides a kind of hydraulic system; It comprises: the toatl proportion pressure valve; Be connected with oil groove with accumulator through first in-line, be used for integrally control flows, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer through its pressure; At least two proportional pressure valves that are connected in parallel to each other and connect with the toatl proportion pressure valve; Wherein the piston in the Clutch Control oil cylinder of one of them proportional pressure valve control series connection with it at least two proportional pressure valves moves; Thereby the clutch state to the clutch that is connected with the Clutch Control oil cylinder is controlled, and to the HYDRAULIC CONTROL SYSTEM unit feedback being provided through pressure transducer; Moving of piston in the synchronizer control oil cylinder of another proportional pressure valve associating toatl proportion pressure valve control passing ratio Flow valve series connection with it at least two proportional pressure valves; Thereby the position to the synchronizer that is connected with synchronizer control oil cylinder is controlled, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer and position transducer; And with the return line of the first in-line tandem, the hydraulic oil of the accumulator that return line is used for accepting being communicated with its fluid, toatl proportion pressure valve, at least two proportional pressure valves, and hydraulic oil wherein is back in the oil groove.Those skilled in the art are understood that easily above-mentioned variant also will drop in protection scope of the present invention.
Benefit of the present invention is:, guaranteed when automobile hydraulic system breaks down that motor vehicle driven by mixed power can cruising, guarantees vehicle and user's Security owing to adopt the mode of proportional pressure valve and one-way valve combination in this hydraulic system.
Benefit of the present invention is: the toatl proportion pressure valve can realize the adjusting to hydraulic fluid pressure in first in-line, thereby can reduce the leakage of subsequent element in the hydraulic system, and the toatl proportion pressure valve can be used as safety valve and guarantees security of system in addition.
Benefit of the present invention also is: a plurality of filter joint work, guarantee oily cleanliness without any pollution through each valve of hydraulic system (for example proportional pressure valve, one-way valve etc.), and guaranteed the function of each valve of hydraulic system.In addition multi-filtering also guaranteed to get into other elements and lubrication system in the hydraulic system hydraulic oil through filtration, guaranteed the function of each element and lubrication system.
Benefit of the present invention also is: through usage ratio pressure valve and proportional flow control valve; Realization is to the control of synchronizer control oil cylinder, and then realization realizes the (motion stably of good motion controllability to the stable control of synchronizer; Do not have and combine to impact and noise), thus realize smooth-going gear shift.
Benefit of the present invention also is: this hydraulic system being provided with is safeguarded valve, so that the hydraulic oil in first in-line can be discharged in the return line when safeguarding, thereby has protected each element in the system.
Claims (12)
1. hydraulic system comprises:
First in-line that is connected with accumulator with oil groove respectively, wherein said accumulator is arranged on said oil groove downstream along said first in-line, is used to store the hydraulic oil from said oil groove; Be arranged on the toatl proportion pressure valve in said accumulator downstream along said first in-line, be used for integrally control flows, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer through its pressure;
First proportional pressure valve, second proportional pressure valve and the 3rd proportional pressure valve that are connected in parallel to each other and connect with said toatl proportion pressure valve,
Said first proportional pressure valve is united the moving of piston of the first clutch control oil cylinder of said toatl proportion pressure valve control series connection with it; Thereby the clutch state to the first clutch that is connected with said first clutch control oil cylinder is controlled, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer;
Said second proportional pressure valve is united moving of piston in the second clutch control oil cylinder of said toatl proportion pressure valve control series connection with it; Thereby the clutch state to the second clutch that is connected with said second clutch control oil cylinder is controlled, and to the HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer;
Said the 3rd proportional pressure valve is united moving of piston in the synchronizer control oil cylinder of said toatl proportion pressure valve control passing ratio Flow valve series connection with it; And to said HYDRAULIC CONTROL SYSTEM unit feedback is provided through pressure transducer and position transducer; Said the 3rd proportional pressure valve makes the pressure of said synchronizer control oil cylinder keep stable at said first ratio pressure and said second proportional pressure valve in to Clutch Control operation of oil cylinde process separately, thereby realizes the stable control to the position of the synchronizer that is connected with said synchronizer control oil cylinder; And
Return line with the said first in-line tandem; Said return line is used for accepting the said hydraulic oil of the said accumulator that is communicated with its fluid, said toatl proportion pressure valve, said first proportional pressure valve, said second proportional pressure valve and said the 3rd proportional pressure valve, and said hydraulic oil wherein is back in the said oil groove.
2. hydraulic system as claimed in claim 1; It is characterized in that; Between said toatl proportion pressure valve and said accumulator tie point and said oil groove, be provided with at least one first filter and at least one second filter; Wherein said at least one second filter is arranged on the downstream of said at least one first filter, the size of the particulate matter that the size of the particulate matter in the said hydraulic oil that said at least one second filter allows to pass through allows less than said at least one first filter to pass through.
3. hydraulic system as claimed in claim 2; It is characterized in that; Between said at least one first filter and said at least one second filter, be provided with oil hydraulic pump by motor driven; Said oil hydraulic pump comes out to pass through successively said at least one first filter and said at least one second filter with said hydraulic oil from said oil groove pumping, thereby makes the hydraulic oil of process double filtration get into said accumulator or the said toatl proportion pressure valve of flowing through through one-way valve.
4. hydraulic system as claimed in claim 2; It is characterized in that; Said hydraulic system also comprises the pressure-relief valve that is communicated with said first in-line and said return line fluid, during greater than first pressure threshold set, makes said pressure-relief valve open with the pressure of the hydraulic oil in said first in-line of box lunch; Thereby the hydraulic oil in said first in-line is discharged in the said return line, and then makes said hydraulic oil be back in the said oil groove.
5. hydraulic system as claimed in claim 3; It is characterized in that; When the pressure of said accumulator place hydraulic oil during less than second pressure threshold set; The running of HYDRAULIC CONTROL SYSTEM unit controls motor is so that be pumped into the hydraulic oil of expectation in the said accumulator through the said oil hydraulic pump that said motor drives.
6. hydraulic system as claimed in claim 2; It is characterized in that; Said hydraulic system also comprises the valve of safeguarding that is communicated with said first in-line and said return line fluid; When breaking down, make the hydraulic oil in said first in-line be discharged into said return line through the said valve of safeguarding, thereby under atmospheric pressure realize said Maintenance of Hydraulic System with the said hydraulic system of box lunch.
7. hydraulic system as claimed in claim 1 is characterized in that, said synchronizer control oil cylinder is can two-way oil-filled and mobile piston cylinder.
8. hydraulic system as claimed in claim 1; It is characterized in that; At said first proportional pressure valve and said second proportional pressure valve when it breaks down; Hydraulic oil in said first clutch control oil cylinder and the said second clutch control oil cylinder is back in said first in-line through the preparation pipeline that is provided with one-way valve that the hydraulic oil in supplying separately passes through respectively, and then is back in the said return line through said toatl proportion pressure valve.
9. hydraulic system as claimed in claim 1; It is characterized in that; Said toatl proportion pressure valve, said first proportional pressure valve, said second proportional pressure valve and said the 3rd proportional pressure valve are the solenoid valve of two-bit triplet; They include inlet opening, delivery outlet and refluxing opening separately, and wherein their refluxing opening all is connected in said return line; The inlet opening of said toatl proportion pressure valve is connected in said accumulator; The inlet opening of said first proportional pressure valve, said second proportional pressure valve and said the 3rd proportional pressure valve is connected in the delivery outlet of said toatl proportion pressure valve with parallel way; The delivery outlet of said first proportional pressure valve is connected in said first clutch control oil cylinder; The delivery outlet of said second proportional pressure valve is connected in said second clutch control oil cylinder; The delivery outlet passing ratio Flow valve of said the 3rd proportional pressure valve is connected in said synchronizer control oil cylinder, and the both sides of said synchronizer control oil cylinder are provided with different piston areas.
10. hydraulic system as claimed in claim 1 is characterized in that, said toatl proportion pressure valve is a safety valve.
11. hydraulic system as claimed in claim 1; It is characterized in that; Said pressure transducer is arranged between said first proportional pressure valve and the said first clutch control oil cylinder, between said second proportional pressure valve and the said second clutch control oil cylinder and said proportional flow control valve control between the oil cylinder with said synchronizer, said position transducer is arranged on said synchronizer and controls between oil cylinder and the said synchronizer.
12. one kind comprises the motor vehicle driven by mixed power like each described hydraulic system of claim 1-11; The transmission system of wherein said motor vehicle driven by mixed power comprises the first clutch that is connected with integrated actuating electric generator with motor, the second clutch that is connected with drive motor, carries out the synchronizer that gear is selected through transmission shaft and gear mechanism; Said hybrid vehicle transmission is used for the power of vehicle is sent to wheel; The clutch state of the first clutch of wherein said motor vehicle driven by mixed power and second clutch and the position of synchronizer are controlled through said hydraulic system, thereby realize the level and smooth gearshift of motor vehicle driven by mixed power.
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| CN 201010224814 CN102330759B (en) | 2010-07-12 | 2010-07-12 | Hydraulic system and hybrid power vehicle comprising same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010224814 CN102330759B (en) | 2010-07-12 | 2010-07-12 | Hydraulic system and hybrid power vehicle comprising same |
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| CN102330759A true CN102330759A (en) | 2012-01-25 |
| CN102330759B CN102330759B (en) | 2013-04-10 |
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| CN103470751A (en) * | 2013-09-29 | 2013-12-25 | 长城汽车股份有限公司 | Hybrid electric vehicle and double clutch automatic transmission used for hybrid electric vehicle |
| CN105143700A (en) * | 2013-04-25 | 2015-12-09 | 舍弗勒技术股份两合公司 | Hydrostatic clutch actuation system |
| CN106032825A (en) * | 2015-03-20 | 2016-10-19 | 上海瑞迪汽车科技有限公司 | Vehicle clutch electro-hydraulic automatic control system |
| CN106594261A (en) * | 2015-10-15 | 2017-04-26 | 上海汽车集团股份有限公司 | Hydraulic clutch operation system, control unit, gearbox and automobile |
| CN106715976A (en) * | 2014-10-09 | 2017-05-24 | 博格华纳公司 | Control systems for hydraulically actuated transmissions of electric vehicles |
| CN106758600A (en) * | 2017-02-24 | 2017-05-31 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling process for gear |
| CN106868964A (en) * | 2017-02-24 | 2017-06-20 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling shifting system |
| CN108602432A (en) * | 2016-01-25 | 2018-09-28 | 凯斯纽荷兰(中国)管理有限公司 | Transmission system |
| CN108980231A (en) * | 2018-08-28 | 2018-12-11 | 安徽江淮汽车集团股份有限公司 | A kind of hybrid electric vehicle power control system and hybrid electric vehicle |
| CN109505972A (en) * | 2018-12-07 | 2019-03-22 | 上海上汽马瑞利动力总成有限公司 | A kind of mixed dynamic Transmission System of matching |
| CN111365311A (en) * | 2018-12-25 | 2020-07-03 | 广州汽车集团股份有限公司 | Hydraulic module of electromechanical coupling system and control method thereof |
| CN112096853A (en) * | 2020-09-11 | 2020-12-18 | 陕西法士特齿轮有限责任公司 | Safety valve mechanism, system and control method for hydraulic automatic gear shifting system |
| CN112406516A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Hydraulic system control method and device |
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| CN106758600A (en) * | 2017-02-24 | 2017-05-31 | 株洲时代电子技术有限公司 | A kind of rail grinding machine traveling process for gear |
| CN108980231A (en) * | 2018-08-28 | 2018-12-11 | 安徽江淮汽车集团股份有限公司 | A kind of hybrid electric vehicle power control system and hybrid electric vehicle |
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| CN109505972A (en) * | 2018-12-07 | 2019-03-22 | 上海上汽马瑞利动力总成有限公司 | A kind of mixed dynamic Transmission System of matching |
| CN111365311A (en) * | 2018-12-25 | 2020-07-03 | 广州汽车集团股份有限公司 | Hydraulic module of electromechanical coupling system and control method thereof |
| CN112406516A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Hydraulic system control method and device |
| CN112096853A (en) * | 2020-09-11 | 2020-12-18 | 陕西法士特齿轮有限责任公司 | Safety valve mechanism, system and control method for hydraulic automatic gear shifting system |
| CN112096853B (en) * | 2020-09-11 | 2021-11-09 | 陕西法士特齿轮有限责任公司 | Safety valve mechanism, system and control method for hydraulic automatic gear shifting system |
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