CN103115148A - Vehicle and automatic transmission and hydraulic control system of automatic transmission - Google Patents
Vehicle and automatic transmission and hydraulic control system of automatic transmission Download PDFInfo
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- CN103115148A CN103115148A CN2013100391903A CN201310039190A CN103115148A CN 103115148 A CN103115148 A CN 103115148A CN 2013100391903 A CN2013100391903 A CN 2013100391903A CN 201310039190 A CN201310039190 A CN 201310039190A CN 103115148 A CN103115148 A CN 103115148A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 53
- 239000003921 oil Substances 0.000 claims abstract description 148
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 40
- 239000002184 metal Substances 0.000 claims abstract description 10
- 230000007935 neutral effect Effects 0.000 claims description 9
- 238000005461 lubrication Methods 0.000 claims description 8
- 239000010687 lubricating oil Substances 0.000 claims description 7
- 238000000605 extraction Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Abstract
The invention provides a vehicle, an automatic transmission and a hydraulic control system of the automatic transmission. The hydraulic control system of the automatic transmission comprises an oil pump, an actuating cylinder, a slave cylinder and a metal band clamped between the actuating cylinder and the slave cylinder. The hydraulic control system of the automatic transmission further comprises a system pressure control valve, wherein an oil inlet end of the system pressure control valve is communicated with an oil discharge port of the oil pump, the system pressure control valve is used for controlling the pressure of hydraulic oil discharged by the oil pump, and an oil inlet end of the actuating cylinder and an oil inlet end of the slave cylinder joint and are connected altogether between the system pressure control valve and the oil pump. Due to the structure, the system pressure control valve controls the pressure of the hydraulic oil discharged by the oil pump, thereby controlling the pressure entering the actuating cylinder and the slave cylinder, and therefore independent control of the pressure of the actuating cylinder and the pressure of the slave cylinder can be realized.
Description
Technical field
The present invention relates to technical field of transportation means, in particular to a kind of vehicle, automatic transmission and hydraulic control system thereof.
Background technique
Domestic motor market strengthens year by year to the automatic transmission demand at present, a kind of as automatic transmission, metal band type CVT (continuously variable transmission) (Continuously Variable Transmission is called for short CVT) has won the approval in market with its travelling comfort, Economy and power character.
Hydraulic system is the critical component of CVT, it is being born, and metal tape clamps, the driving clutch coupled/separated is moved, realize system radiating and lubricate, drive the functions such as torque converter lockup, clutch folding, and must guarantee that above-mentioned functions is able to reliable realization, any one in above-mentioned functions lost efficacy, and all might cause the function of speed changer to be lost in whole or in part.
At present, manufacturing industry at home, this for vehicle, have high integration and an adaptive little hydraulic system of high environment, still be in the starting stage, its characteristic feature is exactly mass manufacturing and the quality assurance ability that domestic shortage is designed and developed ability and key components and parts, concrete manifestation in the following areas:
As shown in Figure 1, in existing CVT technology, generally adopt the single loop hydraulic system.In single-loop system shown in the figure, the pressure of actuating cylinder 1 need to be on the basis of slave cylinder 2 pressure, adjusting through reduction valve 3 enters actuating cylinder 1, therefore the pressure of actuating cylinder 1 can not be higher than the pressure of slave cylinder 2, this has just caused when design actuating cylinder 1 and slave cylinder 2, the area of actuating cylinder 1 must be far longer than the area of slave cylinder 2, this is because active pressure can not be higher than from kinetic pressure, and can only increase by the area that increases actuating cylinder 1 active force of actuating cylinder 1;
In the prior art, effect has a high pressure oil (pressure maximum 4.5Mpa) on the spool of solenoid valve, and this requirement to the voltage endurance of solenoid valve and sealability is very high, and under the repeated stock effect of high pressure oil, is difficult to its fatigue life guarantee;
In the prior art, the locking control valve of fluid torque converter is a hydraulic control multi-channel reversing valve, and the action of its commutation is to be controlled by an electromagnetic switch valve, and the process of its commutation is getting over property of rank, and this inevitably brings certain compression shock or sudden change;
In prior art, adopted mechanical valve, it has not been carried out the loop of flow control, therefore, whole flows of this oil pump all can enter hydraulic system inside, cause the area of passage of mechanical valve to strengthen.And a large amount of unnecessary high pressure oils enter system, have caused the power loss of oil pump larger, cause that the oil consumption of car load increases; And
In prior art, solenoid valve adopts sliding valve structure, and is comparatively responsive to the pollution of fluid.
Summary of the invention
The present invention aims to provide a kind of vehicle, automatic transmission and hydraulic control system thereof that realizes that actuating cylinder pressure is independently controlled with respect to slave cylinder pressure.
To achieve these goals, according to an aspect of the present invention, a kind of hydraulic control system of automatic transmission is provided, comprise oil pump, actuating cylinder, slave cylinder and be clamped in actuating cylinder and slave cylinder between metal tape, also comprise the system pressure control valve, the oil inlet end of system pressure control valve is communicated with the oil drain out of oil pump, the pressure that is used for the hydraulic oil that control oil pump discharges, the oil inlet end of actuating cylinder and the oil inlet end of slave cylinder crosses and jointly be connected between system pressure control valve and oil pump.
Further, also comprise flow control valve, flow control valve is connected between oil pump and system pressure control valve, is used for the flow of the hydraulic oil of control oil pump discharge.
Further, also comprise: the active pressure control valve, be arranged on the active branch road between system pressure control valve and actuating cylinder, enter the pressure of the hydraulic oil before actuating cylinder in order to adjusting; And driven pressure controlled valve, be arranged on the driven branch road between system pressure control valve and slave cylinder, enter the pressure of the hydraulic oil before slave cylinder in order to adjusting.
Further, active pressure control valve and driven pressure controlled valve are mechanical valve, hydraulic control system also comprises guide's oil circuit pressure controlled valve group, guide's oil circuit pressure controlled valve group comprises: active pressure pilot control solenoid valve, be communicated with the active pressure control valve, control the active pressure control valve and regulate the pressure that enters the front hydraulic oil of actuating cylinder; And from kinetic pressure pilot control solenoid valve, be communicated with driven pressure controlled valve, control driven pressure controlled valve and regulate the pressure that enters the front hydraulic oil of slave cylinder.
Further, hydraulic control system also comprises guide's oil circuit pressure controlled valve group, guide's oil circuit pressure controlled valve group comprises system pressure pilot control solenoid valve, system pressure pilot control solenoid valve is connected with the system pressure control valve, and the control system pressure controlled valve is controlled the pressure of the hydraulic oil that oil pump is discharged.
Further, hydraulic control system also comprises the second pressure loop for the combination of solenoidoperated cluthes or separation, the oil extraction end connection second pressure loop of system pressure control valve, the hydraulic oil inflow second pressure loop that overflows after the control of system pressure control valve.
further, the second pressure loop comprises: clutch pressure control valve, clutch pressure control valve have guide oil end and working oil end, the oil extraction end of the oil inlet end connected system pressure controlled valve of clutch pressure control valve, clutch comprises the forward gear clutch and the reverse gear shift clutch that are connected in parallel, and hand-operated direction valve, hand-operated direction valve has oil inlet end and working oil end, the oil inlet end of hand-operated direction valve is communicated with the working oil end of clutch pressure control valve, the working oil end of hand-operated direction valve is communicated with respectively forward gear clutch and reverse gear shift clutch, hand-operated direction valve comprises the first spool and the gear that advances that is arranged in parallel, the reversing gear, neutral position and Parking gear, the first spool optionally is positioned at the gear that advances, the reversing gear, neutral position or Parking gear, wherein, the first spool is in when advancing gear, clutch pressure control valve is communicated with the forward gear clutch, the reverse gear shift clutch is communicated with unloading port, when the first spool was in the reversing gear, clutch pressure control valve was communicated with the reverse gear shift clutch, and the forward gear clutch is communicated with unloading port, when the first spool was in neutral position or Parking gear, the passage that is connected between clutch pressure control valve and hand-operated direction valve was closed, and forward gear clutch and reverse gear shift clutch are communicated with unloading port respectively.
Further, hydraulic control system also comprises guide's oil circuit pressure controlled valve group, guide's oil circuit pressure controlled valve group comprises clutch pressure pilot control solenoid valve, clutch pressure pilot control solenoid valve is connected with clutch pressure control valve, and the solenoidoperated cluthes pressure controlled valve is controlled the pressure of the hydraulic oil of the clutch pressure control valve of flowing through.
Further, hydraulic control system also comprises the three stage pressure loops of controlling for torque converter lockup, three stage pressure loops and second pressure circuit communication, the hydraulic oil of reception second pressure loop overflow.
Further, three stage pressure loops comprise: lubrication pressure control valve, the oil inlet end of lubrication pressure control valve are communicated with the second pressure loop; The locking control valve comprises the second spool and the unlocked position that is arranged in parallel and lock position, and the second spool optionally is arranged in one of unlocked position and lock position; Radiator; And torque-converters, being communicated with locking control valve and radiator respectively, torque-converters has release chamber and lock chamber, and when the second spool was positioned at unlocked position, the locking control valve was communicated with successively release chamber, lock chamber and radiator and is communicated with; When the second spool was positioned at the lock position, the locking control valve was communicated with lock chamber and radiator successively.
Further, hydraulic control system also comprises guide's oil circuit pressure controlled valve group, guide's oil circuit pressure controlled valve group comprises locking pilot control solenoid valve, locking pilot control solenoid valve is connected with the locking control valve, and the pressure that enters the hydraulic oil of locking control valve by control is controlled the position of the second spool of locking control valve.
Further, three stage pressure loops also comprise for the lubricating oil path that hydraulic control system is lubricated, and lubricating oil path is communicated with radiator.
According to a further aspect in the invention, provide a kind of automatic transmission, had hydraulic control system, wherein, hydraulic control system is the hydraulic control system of above-mentioned automatic transmission.
In accordance with a further aspect of the present invention, provide a kind of vehicle, had automatic transmission, wherein, the automatic transmission that automatic transmission is above-mentioned.
Vehicle of the present invention, automatic transmission and hydraulic control system thereof, by the system pressure control valve be communicated with the oil drain out of oil pump is set, and by the oil inlet end of actuating cylinder and the oil inlet end of slave cylinder are crossed and jointly be connected between system pressure control valve and oil pump.Adopt this structure, the pressure of the hydraulic oil that system pressure control valve control oil pump is discharged, and then control the pressure that enters actuating cylinder and slave cylinder is with the independent control with the pressure of slave cylinder of the pressure of realizing actuating cylinder.
Description of drawings
The Figure of description that consists of the application's a part is used to provide a further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 shows the structural representation of the hydraulic control system of automatic transmission of the prior art; And
Fig. 2 shows the structural representation of the hydraulic control system of automatic transmission according to an embodiment of the invention.
Embodiment
Describe below with reference to the accompanying drawings and in conjunction with the embodiments the present invention in detail.Need to prove, in the situation that do not conflict, embodiment and the feature in embodiment in the application can make up mutually.
As shown in Figure 2, hydraulic control system according to the embodiments of the invention automatic transmission, comprise oil pump 6, actuating cylinder 22, slave cylinder 21 and be clamped in actuating cylinder 22 and slave cylinder 21 between metal tape 29, also comprise system pressure control valve 8, the oil inlet end of system pressure control valve 8 is communicated with the oil drain out of oil pump 6, the pressure that is used for the hydraulic oil that control oil pump 6 discharges, the oil inlet end of the oil inlet end of actuating cylinder 22 and slave cylinder 21 rear jointly being connected between system pressure control valve 8 and oil pump 6 that cross.
The hydraulic control system of automatic transmission of the present invention, by the system pressure control valve 8 be communicated with the oil drain out of oil pump 6 is set, and by the oil inlet end of actuating cylinder 22 and the oil inlet end of slave cylinder 21 are crossed and jointly be connected between system pressure control valve 8 and oil pump 6.Adopt this structure, the pressure of the hydraulic oil that system pressure control valve 8 control oil pumps 6 are discharged, and then control the pressure that enters actuating cylinder 22 and slave cylinder 21 is with the independent control with the pressure of slave cylinder 21 of the pressure of realizing actuating cylinder 22.
Preferably, as shown in Figure 2, the hydraulic control system of the automatic transmission of the present embodiment also comprises flow control valve 7, flow control valve 7 is connected between oil pump 6 and system pressure control valve 8, the flow that is used for the hydraulic oil of control oil pump 6 discharges, to reduce the acting loss of oil pump 6, reduce the invalid traffic that enters in hydraulic system, can effectively reduce the volume of valve body or the area of passage of oil circuit.Oil pump 6 is under the driving of motor, and the rotating speed rotation with identical with motor sucks oil pump 6 through filter 23 with lubricant oil, then discharges high pressure oil through its oil drain out.Preferably, oil pump 6 is the double-action oil pump, and the double-action oil pump has two oil drain outs, and two oil drain outs are connecting respectively two different imports of flow control valve 7.And after the flow of two oil drain outs converges, regulate its pressure by system pressure control valve 8.
Preferably, as shown in Figure 2, the hydraulic control system of the automatic transmission of the present embodiment also comprises active pressure control valve 11 and driven pressure controlled valve 10.Wherein, active pressure control valve 11 is arranged on active branch road between system pressure control valve 8 and actuating cylinder 22, enters the pressure of the hydraulic oil before actuating cylinder 22 in order to adjusting; Driven pressure controlled valve 10 is arranged on driven branch road between system pressure control valve 8 and slave cylinder 21, enters the pressure of the hydraulic oil before slave cylinder 21 in order to adjusting.
Adopt the hydraulic control system of the present embodiment, system pressure after regulating through system pressure control valve 8, enter slave cylinder 21 and actuating cylinder 22 through driven pressure controlled valve 10 and active pressure control valve 11 respectively, realize the variation of speed ratio in order to the adjustment that clamps metal tape 29 and the pressure ratio by between the two.In the hydraulic control system of the present embodiment, the pressure of the pressure of slave cylinder 21 and actuating cylinder 22 can be respectively on the basis of system pressure, by driven pressure controlled valve 10(reduction valve) and active pressure control valve 11(reduction valve) independent control, control freedom degree than single loop hydraulic system of the prior art is larger, also makes the clamping force of further reduction metal tape 29 become possibility.
Preferably, as shown in Figure 2, in the hydraulic control system of the automatic transmission of the present embodiment, active pressure control valve 11 and driven pressure controlled valve 10 are mechanical valve, hydraulic control system also comprises guide's oil circuit pressure controlled valve group, and guide's oil circuit pressure controlled valve group comprises active pressure pilot control solenoid valve 2 and from kinetic pressure pilot control solenoid valve 1.Wherein, active pressure pilot control solenoid valve 2 is communicated with active pressure control valve 11, controls active pressure control valve 11 and regulates the pressure that enters the front hydraulic oil of actuating cylinder 22; Be communicated with driven pressure controlled valve 10 from kinetic pressure pilot control solenoid valve 1, control driven pressure controlled valve 10 and regulate the pressure that enters the front hydraulic oil of slave cylinder 21.Preferably, by regulating the electric current of each pilot control solenoid valve, control pilot pressure, thereby realize the control to the pressure of active pressure control valve 11 and driven pressure controlled valve 10.Preferably, be communicated with on oil circuit between active pressure pilot control solenoid valve 2 and active pressure control valve 11 and/or be communicated with from the oil circuit of kinetic pressure pilot control solenoid valve 1 and driven pressure controlled valve 10 and be connected with accumulator 26.
Preferably, as shown in Figure 2, guide's oil circuit pressure controlled valve group also comprises system pressure pilot control solenoid valve 3, and system pressure pilot control solenoid valve 3 is connected with system pressure control valve 8, and the pressure of the hydraulic oil that 8 pairs of oil pumps of control system pressure controlled valve 6 are discharged is controlled.
Preferably, as shown in Figure 2, the hydraulic control system of the automatic transmission of the present embodiment also comprises the second pressure loop for the combination of solenoidoperated cluthes or separation, the oil extraction end connection second pressure loop of system pressure control valve 8, the hydraulic oil inflow second pressure loop that overflows after system pressure control valve 8 is controlled.Preferably, the second pressure loop comprises clutch pressure control valve 13, clutch and hand-operated direction valve 14.Wherein, clutch pressure control valve 13 has guide oil end and working oil end, the oil extraction end of the oil inlet end connected system pressure controlled valve 8 of clutch pressure control valve 13; Clutch comprises forward gear clutch 192 and the reverse gear shift clutch 191 that is connected in parallel; Hand-operated direction valve 14 has oil inlet end and working oil end, and the oil inlet end of hand-operated direction valve 14 is communicated with the working oil end of clutch pressure control valve 13, and the working oil end of hand-operated direction valve 14 is communicated with respectively forward gear clutch 192 and reverse gear shift clutch 191.
Wherein, hand-operated direction valve 14 comprises the first spool and the gear that advances that is arranged in parallel, move backward gear, neutral position and Parking gear, the first spool optionally is positioned at the gear that advances, reversing gear, neutral position or Parking gear, and the variation of manually controlling the first valve element position of hand-operated direction valve 14 realizes closing/the conducting switching of each passage.When the first spool is in when advancing gear, clutch pressure control valve 13 is communicated with forward gear clutches 192, and reverse gear shift clutch 191 is communicated with unloading port; When the first spool was in the reversing gear, clutch pressure control valve 13 was communicated with reverse gear shift clutch 191, and forward gear clutch 192 is communicated with unloading port; When the first spool was in neutral position or Parking gear, the passage that is connected between clutch pressure control valve 13 and hand-operated direction valve 14 was closed, and forward gear clutch 192 and reverse gear shift clutch 191 are communicated with unloading port respectively.
Adopt the hydraulic control system of the present embodiment, when system pressure had surpassed the target pressure value that system pressure control valve 8 sets, unnecessary flow entered the second pressure loop in order to the combination of clutch or separate and control through 8 overflows of system pressure control valve.Adopt this structure, in system with the less but oil pump of oil mass 6 supply capabilities when larger, oil pump 6 redundancy flows can be offloaded to the second pressure loop, not only reduced the power consumpiton of oil pump 6, avoid more flow to enter hydraulic system inside, and can utilize combination or the separation of the hydraulic oil solenoidoperated cluthes that enter the second pressure loop.
Preferably, as shown in Figure 2, in the hydraulic control system of the automatic transmission in the present embodiment, guide's oil circuit pressure controlled valve group also comprises clutch pressure pilot control solenoid valve 5, clutch pressure pilot control solenoid valve 5 is connected with clutch pressure control valve 13, and clutch pressure pilot control solenoid valve 5 is controlled through the pressure of the hydraulic oil of clutch pressure control valve 13 by controlling current convection.Preferably, be connected with accumulator 26 on the oil circuit between connection clutch pressure pilot control solenoid valve 5 and clutch pressure control valve 13.
Preferably, as shown in Figure 2, the hydraulic control system of the present embodiment also comprises the three stage pressure loops of controlling for torque converter lockup, three stage pressure loops and second pressure circuit communication, the hydraulic oil of reception second pressure loop overflow.Preferably, three stage pressure loops comprise lubrication pressure control valve 12, locking control valve 15, radiator 16 and torque-converters 18.Wherein, the oil inlet end of lubrication pressure control valve 12 is communicated with the second pressure loop, and preferably, the oil inlet end that is communicated with lubrication pressure control valve 12 is communicated with on the oil circuit in second pressure loop and is connected with Auxiliary valves 30.Locking control valve 15 comprises the second spool and the unlocked position that is arranged in parallel and lock position, and the second spool optionally is arranged in one of unlocked position and lock position; Torque-converters 18 is communicated with locking control valve 15 and radiator 16 respectively, and torque-converters 18 has release chamber 181 and lock chamber 182, the second spools when being positioned at unlocked position, and locking control valve 15 is communicated with successively release chamber 181, lock chamber 182 and radiator 16 and is communicated with; When the second spool was positioned at the lock position, locking control valve 15 was communicated with lock chamber 182 and radiator 16 successively.
Preferably, as shown in Figure 2, guide's oil circuit pressure controlled valve group also comprises locking pilot control solenoid valve 4, and locking pilot control solenoid valve 4 is connected with locking control valve 15, and the pressure that enters the hydraulic oil of locking control valve 15 by control is controlled the position of the second spool of locking control valve 15.Preferably, be connected with accumulator 26 on the oil circuit between connection locking pilot control solenoid valve 4 and locking control valve 15.
Adopt the hydraulic control system of the present embodiment, the excess flow in second pressure loop enters three stage pressure loops through lubrication pressure control valve 12, and three stage pressure loops are mainly being born the locking of lubricated and heat sinking function and the torque-converters 18 of system and controlled.The pressure that enters locking control valve 15 pilot control ends by adjusting by locking pilot control solenoid valve 4 is controlled locking control valve 15 second spool residing positions, thereby realizes the conducting of eight passages/cut-out.When pilot pressure was low, the spool of locking control valve 15 was in the unlocked position, and three stage pressures oil enter radiator 16 through the release chamber 181 that locking control valves 15 enter torque-converters 18 by lock chamber 182, heat dissipation channel.When pilot pressure was higher, the spool of locking control valve 15 was in the lock position, and second pressure oil enters the lock chamber 182 of torque-converters 18 through locking control valve 15.Three stage pressure oil are without torque-converters 18 but directly to enter radiator 16 through heat dissipation channel cooling.
In the present embodiment, although 15 employings of the locking control valve of fluid torque converter 18 is and the similar hydraulic control multi-channel reversing valve of prior art that its commutation process is controlled by locking pilot control solenoid valve 4.Commutation process can be under the control of solenoid valve balance more, reduced the impact to hydraulic system.
Preferably, as shown in Figure 2, three stage pressure loops also comprise for the lubricating oil path 25 that hydraulic control system is lubricated, and lubricating oil path 25 is communicated with radiators 16.Adopt the hydraulic control system of the present embodiment, through the cooled low-pressure hydraulic oil of radiator 16, through after filter cleaner 17, enter lubricating oil path 25, metal tape 29, clutch and gear etc. are lubricated.
Preferably, in embodiments of the invention, all solenoid valves all are arranged in the pilot control oil circuit of low pressure.Therefore, voltage endurance and the sealability of solenoid valve do not had excessive demand, and without the repeated stock effect of high pressure oil, extended the working life of solenoid valve, and can be so that the control of pressure is more steady.
Preferably, the solenoid valve in embodiments of the invention adopts cone valve structure, can improve the tolerance level of system to polluting.
Preferably, can guarantee the realization of automatic transmission fundamental function in the situation that system power supply disconnects.As shown in Figure 2, from kinetic pressure pilot control solenoid valve 1, active pressure pilot control solenoid valve 2, system pressure pilot control solenoid valve 3, locking pilot control solenoid valve 4, clutch pressure pilot control solenoid valve 5 be respectively in order: NL, NH, NH, NL and NH type, the solenoid valve of NL type its pressure of controlling under powering-off state is lower or be zero, and the solenoid valve of NH type its pressure of controlling under powering-off state is higher or reach its maximum value.Due to the type of above-mentioned five solenoid valves, in the situation that system cut-off, this system all is in higher state from kinetic pressure, active pressure, clutch pressure and system pressure, has guaranteed the clamping of metal tape 29, the combination of clutch.Simultaneously, locking control valve 15 is in released state, and torque-converters 18 possesses the starting function.
The present invention also provides a kind of automatic transmission, has hydraulic control system, and wherein, hydraulic control system is the hydraulic control system of above-mentioned automatic transmission.
The present invention also provides a kind of vehicle, has automatic transmission, and wherein, automatic transmission is above-mentioned automatic transmission.
From above description, can find out, vehicle of the present invention, automatic transmission and hydraulic control system thereof, by the system pressure control valve 8 be communicated with the oil drain out of oil pump 6 is set, and by the oil inlet end of actuating cylinder 22 and the oil inlet end of slave cylinder 21 are crossed and jointly be connected between system pressure control valve 8 and oil pump 6.Adopt this structure, the pressure of the hydraulic oil that system pressure control valve 8 control oil pumps 6 are discharged, and then control the pressure that enters actuating cylinder 22 and slave cylinder 21 is with the independent control with the pressure of slave cylinder 21 of the pressure of realizing actuating cylinder 22.
The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (14)
1. the hydraulic control system of an automatic transmission, comprise oil pump (6), actuating cylinder (22), slave cylinder (21) and be clamped in described actuating cylinder (22) and described slave cylinder (21) between metal tape (29), it is characterized in that, also comprise system pressure control valve (8), the oil inlet end of described system pressure control valve (8) is communicated with the oil drain out of described oil pump (6), pressure for the hydraulic oil of controlling described oil pump (6) discharge, the oil inlet end of the oil inlet end of described actuating cylinder (22) and described slave cylinder (21) crosses and jointly is connected between described system pressure control valve (8) and described oil pump (6).
2. the hydraulic control system of automatic transmission according to claim 1, it is characterized in that, also comprise flow control valve (7), described flow control valve (7) is connected between described oil pump (6) and described system pressure control valve (8), for the flow of the hydraulic oil of controlling described oil pump (6) discharge.
3. the hydraulic control system of automatic transmission according to claim 1, is characterized in that, also comprises:
Active pressure control valve (11) is arranged on the active branch road between described system pressure control valve (8) and described actuating cylinder (22), enters the pressure of the front hydraulic oil of described actuating cylinder (22) in order to adjusting; And
Driven pressure controlled valve (10) is arranged on the driven branch road between described system pressure control valve (8) and described slave cylinder (21), enters the pressure of the front hydraulic oil of described slave cylinder (21) in order to adjusting.
4. the hydraulic control system of automatic transmission according to claim 3, it is characterized in that, described active pressure control valve (11) and described driven pressure controlled valve (10) are mechanical valve, described hydraulic control system also comprises guide's oil circuit pressure controlled valve group, and described guide's oil circuit pressure controlled valve group comprises:
Active pressure pilot control solenoid valve (2) is communicated with described active pressure control valve (11), controls described active pressure control valve (11) and regulates the pressure that enters the front hydraulic oil of described actuating cylinder (22); And
From kinetic pressure pilot control solenoid valve (1), be communicated with described driven pressure controlled valve (10), control described driven pressure controlled valve (10) and regulate the pressure that enters the front hydraulic oil of described slave cylinder (21).
5. the hydraulic control system of automatic transmission according to claim 1, it is characterized in that, described hydraulic control system also comprises guide's oil circuit pressure controlled valve group, described guide's oil circuit pressure controlled valve group comprises system pressure pilot control solenoid valve (3), described system pressure pilot control solenoid valve (3) is connected with described system pressure control valve (8), controls described system pressure control valve (8) pressure of the hydraulic oil of described oil pump (6) discharge is controlled.
6. the hydraulic control system of automatic transmission according to claim 1, it is characterized in that, described hydraulic control system also comprises the second pressure loop for the combination of solenoidoperated cluthes or separation, the oil extraction end described second pressure of the connection loop of described system pressure control valve (8), the hydraulic oil described second pressure of the inflow loop that overflows after described system pressure control valve (8) control.
7. the hydraulic control system of automatic transmission according to claim 6, is characterized in that, described second pressure loop comprises:
Clutch pressure control valve (13), described clutch pressure control valve (13) has guide oil end and working oil end, and the oil inlet end of described clutch pressure control valve (13) is communicated with the oil extraction end of described system pressure control valve (8);
Clutch comprises the forward gear clutch (192) and the reverse gear shift clutch (191) that are connected in parallel; And
hand-operated direction valve (14), described hand-operated direction valve (14) has oil inlet end and working oil end, the oil inlet end of described hand-operated direction valve (14) is communicated with the working oil end of described clutch pressure control valve (13), the working oil end of described hand-operated direction valve (14) is communicated with respectively described forward gear clutch (192) and described reverse gear shift clutch (191), described hand-operated direction valve (14) comprises the first spool and the gear that advances that is arranged in parallel, the reversing gear, neutral position and Parking gear, described the first spool optionally is positioned at the described gear that advances, described reversing gear, described neutral position or Parking gear, wherein,
Described the first spool is in described advancing during gear, and described clutch pressure control valve (13) is communicated with described forward gear clutch (192), and described reverse gear shift clutch (191) is communicated with unloading port;
When described the first spool was in described reversing gear, described clutch pressure control valve (13) was communicated with described reverse gear shift clutch (191), and described forward gear clutch (192) is communicated with described unloading port;
When described the first spool is in described neutral position or described Parking gear, the passage that is connected between described clutch pressure control valve (13) and described hand-operated direction valve (14) is closed, and described forward gear clutch (192) and described reverse gear shift clutch (191) are communicated with described unloading port respectively.
8. the hydraulic control system of automatic transmission according to claim 7, it is characterized in that, described hydraulic control system also comprises guide's oil circuit pressure controlled valve group, described guide's oil circuit pressure controlled valve group comprises clutch pressure pilot control solenoid valve (5), described clutch pressure pilot control solenoid valve (5) is connected with described clutch pressure control valve (13), controls described clutch pressure control valve (13) pressure of the hydraulic oil of the described clutch pressure control valve (13) of flowing through is controlled.
9. the hydraulic control system of automatic transmission according to claim 7, it is characterized in that, described hydraulic control system also comprises the three stage pressure loops of controlling for torque converter lockup, described three stage pressure loops and described second pressure circuit communication receive the hydraulic oil of described second pressure loop overflow.
10. the hydraulic control system of automatic transmission according to claim 9, is characterized in that, described three stage pressure loops comprise:
Lubrication pressure control valve (12), the oil inlet end described second pressure of the connection loop of described lubrication pressure control valve (12);
Locking control valve (15) comprises the second spool and the unlocked position that is arranged in parallel and lock position, and described the second spool optionally is arranged in one of described unlocked position and described lock position;
Radiator (16); And
Torque-converters (18), be communicated with described locking control valve (15) and described radiator (16) respectively, described torque-converters (18) has release chamber (181) and lock chamber (182), when described the second spool was positioned at described unlocked position, described locking control valve (15) was communicated with successively described release chamber (181), described lock chamber (182) and described radiator (16) and is communicated with; When described the second spool was positioned at described lock position, described locking control valve (15) was communicated with described lock chamber (182) and described radiator (16) successively.
11. the hydraulic control system of automatic transmission according to claim 10, it is characterized in that, described hydraulic control system also comprises guide's oil circuit pressure controlled valve group, described guide's oil circuit pressure controlled valve group comprises locking pilot control solenoid valve (4), described locking pilot control solenoid valve (4) is connected with described locking control valve (15), and the pressure that enters the hydraulic oil of described locking control valve (15) by control is controlled the position of described second spool of described locking control valve (15).
12. the hydraulic control system of automatic transmission according to claim 10, it is characterized in that, described three stage pressure loops comprise that also for the lubricating oil path that described hydraulic control system is lubricated (25), described lubricating oil path (25) is communicated with described radiator (16).
13. an automatic transmission has hydraulic control system, it is characterized in that, described hydraulic control system is the hydraulic control system of the described automatic transmission of any one according to claim 1 to 12.
14. a vehicle has automatic transmission, it is characterized in that, described automatic transmission is automatic transmission according to claim 13.
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| CN201310039190.3A CN103115148B (en) | 2013-01-31 | 2013-01-31 | vehicle, automatic transmission and hydraulic control system thereof |
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| CN107524733A (en) * | 2016-06-21 | 2017-12-29 | 上海汽车集团股份有限公司 | The control method and device of clutch lubrication flow |
| CN108571586A (en) * | 2017-03-14 | 2018-09-25 | 上海汽车集团股份有限公司 | Contiuously variable transmission hydraulic control system |
| CN108757611A (en) * | 2018-08-09 | 2018-11-06 | 江苏金润汽车传动科技有限公司 | Multi-speed automatic transmission hydraulic system |
| CN109237017A (en) * | 2018-11-23 | 2019-01-18 | 山东上汽汽车变速器有限公司 | A kind of CVT hydraulic control system |
| CN111006013A (en) * | 2018-10-08 | 2020-04-14 | 上海汽车集团股份有限公司 | Hydraulic control system for continuously variable transmission |
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| CN109237017B (en) * | 2018-11-23 | 2023-08-18 | 山东上汽汽车变速器有限公司 | CVT hydraulic control system |
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Address after: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee after: Hunan Yung Da intelligent transmission Limited by Share Ltd. Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: Hunan Yung Da vehicle transmission Limited by Share Ltd. Address after: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee after: Hunan Yung Da vehicle transmission Limited by Share Ltd. Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: HUNAN JIANGLU & RONGDA VEHICLE TRANSMISSION Ltd. |
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Effective date of registration: 20240111 Address after: 646003 Section 4, Jiugu Avenue, High tech Zone, Luzhou City, Sichuan Province Patentee after: Luzhou Rongda Intelligent Transmission Co.,Ltd. Address before: 410205 No. 68 Du Rong Road, Yuelu District, Changsha, Hunan Patentee before: Hunan Yung Da intelligent transmission Limited by Share Ltd. |