CN107061547A - hybrid vehicle and its gear box hydraulic control system - Google Patents

hybrid vehicle and its gear box hydraulic control system Download PDF

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Publication number
CN107061547A
CN107061547A CN201710373561.XA CN201710373561A CN107061547A CN 107061547 A CN107061547 A CN 107061547A CN 201710373561 A CN201710373561 A CN 201710373561A CN 107061547 A CN107061547 A CN 107061547A
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CN
China
Prior art keywords
valve
oil
clutch
control valve
oil circuit
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Granted
Application number
CN201710373561.XA
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Chinese (zh)
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CN107061547B (en
Inventor
薛翔
朱顺利
张笑
任旻
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Agile Drive Technology Co Ltd
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Agile Drive Technology Co Ltd
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0412—Cooling or heating; Control of temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/04—Smoothing ratio shift
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
    • F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
    • F16H63/30—Constructional features of the final output mechanisms
    • F16H63/34—Locking or disabling mechanisms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D48/00—External control of clutches
    • F16D48/02—Control by fluid pressure
    • F16D2048/0203—Control by fluid pressure with an accumulator; Details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D2500/00—External control of clutches by electric or electronic means
    • F16D2500/10—System to be controlled
    • F16D2500/104—Clutch
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Abstract

Present invention is disclosed a kind of gear box hydraulic control system of hybrid vehicle, including fuel tank, oil supply subsystem, main oil pressure control valve for controlling working connection oil pressure, and connected by working connection gearshift control subsystem, clutch control subsystem, lubrication control subsystem, the clutch hydraulic pressure control subsystem includes, separate clutch, the side connection engine of the separation clutch, opposite side connects gearbox, and first clutch control valve and second clutch control valve, separation clutch control valve.The present invention can realize the conversion and output of hybrid power, difficulty is manufactured and designed so as to reduce on the basis of original dual-clutch transmission；Gearshift control subsystem of the present invention has the hydraulic interlock function of gear on same output shaft, and only one of which gear is combined on same output shaft, it is to avoid the gearbox caused by magnetic valve misoperation causes to form two gears on same output shaft is damaged.

Description

Hybrid vehicle and its gear box hydraulic control system
Technical field
The present invention relates to automobile gearbox technical field, the specifically hydraulic control applied to hybrid electric vehicle gearshift case System.
Background technology
With the continuous improvement of environmental consciousness, the new energy technology based on electric power is actively applied in automobile production, In order to make up the defect that pure electric vehicle power is not enough, continual mileage is short, the mixing that motor and internal combustion engine are integrated is moved Power automobile just arises at the historic moment.The need for adapting to hybrid electric vehicle, just need to design a kind of gear box hydraulic control system, To on the basis of original dual-clutch transmission, the conversion of hybrid power is realized and defeated by the simple modifications of structure Go out, such as Chinese patent CN201410796475.6 is the gear box hydraulic control system for disclosing a kind of hybrid vehicle.
Although prior art hydraulic control system can realize the work of the double clutch gearboxes of wet type, control mode is easy The problems such as larger main oil pressure fluctuation and unstable oil pressure cntrol occur, the gearbox of such HYDRAULIC CONTROL SYSTEM mode is mounted in After vehicle, it may appear that shifting shock and pause and transition in rhythm or melody, it is unfavorable for driving the driving impression of people.The pilot control oil of main oil pressure control system Pressure by working connection pressure fluctuation due to being influenceed larger, and the stability that main oil pressure can be caused to control is relatively low, is easily occurred than larger Pressure fluctuation, the control to other hydraulic subsystems caused than large effect, and other hydraulic subsystems can follow main oil pressure Fluctuation and fluctuate, cause whole HYDRAULIC CONTROL SYSTEM unstable.Such as Chinese patent CN201410588154.7 and Shown in CN201510362821.4, in the prior art, the hydraulic control system of the double clutch gearboxes of wet type is needed by engine Mechanical oil pump is driven, the hydraulic oil that storage is drawn from the fuel tank as oil sources provides oil pressure.Although the hydraulic control system energy Enough realize the work of the double clutch gearboxes of wet type, but control mode easily occurs that main oil pressure fluctuation is larger and oil pressure cntrol is unstable The problems such as, itself main reason is that：Control the ride comfort of selector fork motion more difficult, this is due to that the fluctuation of main oil pressure can be brought Pilot control oil circuit impacts in gearshift control subsystem, due to the impact and fluctuation of guide's oil circuit, makes solenoid valve control in system Gear shift guiding valve play occurs with the fluctuation of oil pressure, make to occur fluctuating and impact by the pressure oil of gear shift guiding valve.In addition, There is no interlocking structure in existing gearshift control subsystem, have on same output shaft while forming the risk of two gears.
As shown in Chinese patent CN201510362821.4, in the prior art, the hydraulic control of the double clutch gearboxes of wet type System relates merely to the separation and combination of clutch, when working connection fuel feeding shakiness can cause pressure fluctuation, is combined in clutch When, it is inevitable to produce the problems such as shift shock and gearshift shake.In addition, the cleaning of oil circuit is also very in hydraulic control system Important, it otherwise can produce the situation of valve element clamping stagnation.
The effect of speed changing box lubricating system is carried to the double clutch and bearing element inside speed changer or the position of slip For lubricating oil, it is ensured that the fluid lubrication of rubbing surface, friction and wear is reduced, while being cooled down to lubricant housings.With society Develop, science and technology progress, people are to the requirement more and more higher of driver comfort and fuel-economy type, the requirement to discharge standard More strict, this promotes double clutch gearbox technology to be rapidly developed.Double clutch gearbox have unique structure and Operation principle, the rotating speed of its operating mode complexity, gear and bearing is higher；Dual-clutch gear-shifting switching needs to control accurate, friction plate Need the sliding control that rubs when shifting gears switching, rubbed with the cunning of clutch, double clutch produces substantial amounts of heat, thus to lubrication with Cooling system proposes higher requirement.
In terms of gearbox gear cooling and lubricating, in current double clutch gearbox, some are used or tradition is splashed Formula lubricates, and due to being arranged gear train assembly, is limited to the principle of splash system lubrication, tooth shaft design and performance are carried Huge challenge is gone out；Some also using compulsory lubricating system, but oil circuit and hardware configuration are sufficiently complex, to part Design and producing technique propose higher requirement, such as Chinese patent CN203516692U, CN104196991B.
Chinese patent CN106321805A discloses a kind of lubrication oil circuit, but the lubrication oil circuit is only only carried Do not controlled for the flow and pressure of the cooling and lubricating to clutch, and cutting oil by valve element, lubricating cooling oil flow It is uncontrollable, cause whole lubricating and cooling system efficiency low.If clutch lubrication pressure is excessive, can cause clutch separation and With reference to occurring, control is difficult, in clutch control circuit pressure than in the case of relatively low, because lubrication pressure is too high, can cause from The situation that clutch can not be combined occurs.
The content of the invention
The purpose of the present invention is to overcome the shortcomings of that prior art is present to move there is provided the mixing that is applied to of a kind of stabilization, safety The hydraulic control system of power automobile gearbox.
The purpose of the present invention is achieved through the following technical solutions：
A kind of gear box hydraulic control system, for controlling first clutch and second clutch, including：For providing hydraulic oil Fuel tank, for hydraulic oil to be exported from fuel tank to the oil supply subsystem of working connection, the main oil for controlling working connection oil pressure Pressure control valve, the main oil pressure control valve is three-position four-way valve, and it has the guide end that connect with the working connection, lead to it is oily after gram Its valve element is moved to right after the spring force for the main oil pressure control valve spring for taking the main oil pressure control valve, and is connected by working connection Gearshift control subsystem, clutch control subsystem, lubrication control subsystem, the clutch hydraulic pressure control subsystem Including：First clutch control valve and second clutch control valve, be separately positioned on by the working connection lead to described first from On the fluid pressure line parallel with one another of clutch and second clutch, clutch, the side connection hair of the separation clutch are separated Motivation, opposite side connection gearbox controls the separation clutch control valve of the separation clutch break-make, the separation clutch Control oil circuit in parallel with first double clutch control oil circuit；Relative set is in the first clutch control valve, the respectively The accumulator of the output end of two clutch control valves and separation clutch control valve.
It is preferred that, the first clutch control valve has guide end and spring terminal, the first clutch control valve The oil circuit of output end sets backfeed loop, and the backfeed loop is communicated between the guide end and spring terminal, and the guide end is anti- The opening diameter for presenting the throttle orifice of oil circuit is less than the opening diameter that the spring terminal feeds back the throttle orifice of oil circuit；Second clutch Device control valve, separate clutch control valve oil channel structures it is identical with the oil channel structures of the first clutch control valve.
It is preferred that, the first clutch control valve, second clutch control valve, the input for separating clutch control valve Filter screen is respectively connected with output end；The working connection leads to the first clutch, second clutch, separation clutch respectively Fluid pressure line on be respectively provided with pressure sensor, the pressure sensor is arranged on the first clutch control valve, second Clutch control valve, separate clutch control valve output end, and close to the first clutch, second clutch, separation from At the plunger shaft of clutch.
It is preferred that, a branch is additionally provided with the working connection, a guide that there is rear end to feed back self-balancing is additionally provided with thereon Oil pressure cntrol guiding valve, forms the hydraulic oil of steady pressure by the hydraulic coupling at its guide end and the spring dynamic balance of spring terminal, should Hydraulic oil leads to the spring terminal of the main oil pressure control valve by guide's oil circuit, the openings of sizes of the main oil pressure control valve by TCU controls the size of current of a magnetic valve to control.
It is preferred that, the oil supply subsystem includes the mechanical pump and electronic pump for being respectively communicated with the fuel tank, the mechanical pump Selectively hydraulic oil is exported to working connection from fuel tank with electronic pump, the hydraulic oil output end of the mechanical pump and electronic pump On be equipped with check valve, input and be equipped with filter screen；The working connection be provided with a safety relief valve, positioned at the fuel tank with On oil circuit between main oil pressure control valve.
It is preferred that, the gearshift control subsystem includes：The one group of selector fork driven by the hydraulic oil, it is described to change Shelves shift fork is used for optionally formation gear synchronous with shifting gear by synchronizer, and the shifting gear includes seven drive shifts Gear and a reversing shelves gear, its odd number shelves gear are arranged on same odd number shelves output shaft, its even number shelves gear and are fallen Car stop arrangement of gears is on another even gear output shaft, the gear shift guiding valve equal with the selector fork quantity and for controlling The magnetic valve of each gear shift guiding valve is made, same output shaft is provided with gear hydraulic interlock structure；Respectively by the liquid in working connection Force feed is selectively inputted to the first gear shift working connection and the second gear shift working connection in the plunger shaft of selector fork；For switching The oil circuit change-over pilot valve of first gear shift working connection and the second gear shift working connection.
It is preferred that, the gearshift control subsystem includes four selector forks and four gear shift corresponding thereto are slided Valve, every two pairs of gear shift guiding valves and selector fork act on same output shaft, and each gear shift guiding valve is respectively provided with a control The magnetic valve of its valve element movement is made, and with a guide end and spring terminal, the guide end passes through magnetic valve and the fuel tank Connection, the hydraulic interlock structure is the hydraulic interlock being arranged between two gear shift acted on same output shaft guiding valves Oil circuit, one end of the hydraulic interlock oil circuit connects the guide end of a gear shift guiding valve wherein, and the other end is connected at another The spring terminal of gear shift guiding valve.
It is preferred that, by the hydraulic oil with steady pressure formed after guide's oil pressure cntrol guiding valve, pass through institute The guide end of each gear shift guiding valve of guide's oil circuit connection is stated, is provided between the guide's oil circuit and the guide end of gear shift guiding valve Filter screen and throttle orifice.
It is preferred that, the guide's oil circuit of the oil circuit change-over pilot valve passes through a solenoid valve control；The oil circuit change-over pilot valve connects It is connected to a counterbalance valve.
It is preferred that, the lubrication control subsystem, including：The lubricating oil exported from the main oil pressure control valve Road, connects the oil cooler and pressure filter of the lubricant passage way, and the lubrication exported from the oil cooler and pressure filter Oil circuit, the lubrication oil circuit is divided into two-way, is respectively used to clutch lubrication and gearbox inner bearing lubrication；It is described to be used to become The lubrication oil circuit of fast case inner bearing lubrication is divided into two-way, respectively axle lubrication oil circuit and bearing lubrication cooling oil path, The lubrication oil circuit for clutch lubrication by after a lubrication flow control valve formed clutch lubrication cooling oil path, The lubrication flow control valve is by the size of gear box control unit TCU control signal control valve electromagnetism portion electric current come regulating valve Openings of sizes, the output end of the lubrication flow control valve connects a residual stress control valve, the residual stress by oil circuit Control valve, which includes a guide end and one, has the spring terminal of residual stress control valve spring, respectively positioned at the residual stress control The both sides of valve, the guide end of the residual stress control valve is connected with the lubrication oil circuit, and the lubrication oil circuit is also By the residual stress control valve and a draining oil communication, the draining oil circuit output end leads to the fuel tank, the profit The output end of slip-stream control valve is connected with the spring terminal of the residual stress control valve.
It is preferred that, the front and rear sides of the lubrication flow control valve are equipped with a filter screen, are front side filter screen and rear side respectively Filter screen, oil circuit tie point between the output end of the lubrication flow control valve and the residual stress control valve be located at it is described after Between side screen and clutch.
It is preferred that, the oil circuit between the output end of the lubrication flow control valve and the residual stress control valve spring end Throttle orifice is provided with, throttle orifice is provided between the guide end of the residual stress control valve and the lubrication oil circuit.
It is preferred that, the lubricant passage way is provided with flow control valve, and the hydraulic oil of the lubricant passage way output passes through institute State and be divided into two-way after flow control valve, wherein hydraulic oil overcomes flow control valve bullet through the dynamic flow control valve of throttle orifice pusher all the way Valve element is moved to left after the spring force of spring, the second road hydraulic oil is divided into two-way again after throttle orifice, and the first via is after throttle orifice Reach the spring terminal of the flow control valve, being worked with spring one moves to right the valve element of the flow control valve, thus with the right side Pilot pressure one dynamic equilibrium of formation of side, hydraulic oil of the second tunnel output with steady pressure and flow, into measured lubrication Oil circuit, the hydraulic oil of the measured lubrication oil circuit enters the oil cooler.
It is preferred that, a check valve in parallel on the inlet and outlet of fuel channel of the pressure filter.
It is preferred that, the measured lubrication oil circuit has a branch road, and the branch road is provided with one under case of by-pass valve effect The by-passing valve of normal off, the branch road is in parallel with by the oil circuit of the oil cooler, and the by-passing valve has a guide end, the elder generation Lead end and the measured lubrication oil communication.
It is preferred that, described gear box hydraulic control system, in addition to electronic parking control subsystem, it has connection institute The park pawl valve of working connection is stated, the park pawl valve controls park pawl executing agency to carry out parking or parking by oil circuit Unblock, the park pawl valve is two position three-way valve, is selectively respectively communicated with parking unblock oil circuit and parking oil circuit.
Present invention further teaches a kind of hybrid vehicle, including engine, motor, and any speed change described above Case hydraulic control system.
The beneficial effects are mainly as follows：
1st, guide's oil pressure cntrol guiding valve of the present invention can provide stable pilot pressure for whole gear change system, pilot pressure it is big It is small to be fluctuated because of the fluctuation of main oil pressure, the movement of gear shift guiding valve can be smoothly promoted in the presence of magnetic valve, is controlled Hydraulic oil smoothly promotes selector fork to move, with good gear shift ride comfort；
2nd, gearshift control subsystem of the present invention has the hydraulic interlock function of gear on same output shaft, in same output shaft Upper only one of which gear is combined, it is to avoid because magnetic valve misoperation causes on same output shaft to make while forming two gears Into gearbox damage；
3rd, lubrication control subsystem of the present invention is provided with flow control valve, passes through the guide end self feed back of flow control valve, bullet Feed back the dynamic equilibrium in the axial direction of flow control valve with spring force in spring end, it is ensured that lubricating and cooling system of the present invention has steady Fixed pressure and flow；Provided with residual pressure control valve, the MTP of lubricating and cooling system of the present invention is limited, it is ensured that profit The safety of sliding cooling system；
4th, lubrication control subsystem of the present invention pressure filter oil circuit in parallel be provided with check valve, it is ensured that pressure filter failure or Person provides enough lubricating cooling oils for whole system when blocking, it is ensured that gearbox can continue to normal work；In oil cooler Oil circuit after being connected with pressure filter is provided with by-passing valve, it is ensured that when oil cooler occurs to block or this oil circuit is completely plugged, still There is enough hydraulic oil to provide sufficient lubricating cooling oil for the bearing and clutch of gearbox；
5th, the oil circuit of the nearly clutch cavity volume of clutch control subsystem of the present invention is provided with accumulator, it is to avoid because of the fluctuation of working connection The oil caused shakes and hydraulic shock；Clutch control guiding valve, provided with feedback oil circuit, forms certain pressure at guide end and spring terminal Power is poor, the movement of guiding valve is more smoothed out, and the control to clutch pressure can realize smoothed curve control；
6th, fuel feeding system system of the present invention uses mechanical pump and electronic pump double pump fuel feeding, can reduce the volume of mechanical pump, add The flexibility of arrangement, while improving the efficiency of whole hydraulic system；
7th, the present invention sets safety relief valve, can limit whole system maximum pressure, protect the safety of whole hydraulic system Main oil pressure control subsystem；
8th, the present invention uses electro-hydraulic system, smoothes out parking, improves the real-time and ride comfort of parking braking system；Structure Simply, a large amount of interior spaces and mechanical transmission component are eliminated, car mass is alleviated, the manufacturing cost of automobile is reduced, carries High VE Vehicle Economy.
Brief description of the drawings
Technical solution of the present invention is described further below in conjunction with the accompanying drawings：
Fig. 1：The hydraulic diagram of gear box hydraulic control system of the present invention；
Fig. 2：The hydraulic diagram of gearshift control subsystem of the present invention；
Fig. 3：The hydraulic diagram of clutch control subsystem of the present invention；
Fig. 4：The hydraulic diagram of main oil pressure control subsystem of the present invention；
Fig. 5：The hydraulic diagram of lubrication control subsystem of the present invention；
Fig. 6：The hydraulic diagram of oil supply subsystem of the present invention；
Fig. 7：The hydraulic diagram of electronic parking control subsystem of the present invention.
Embodiment
Below with reference to embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously The present invention is not limited to, structure that one of ordinary skill in the art is made according to these embodiments, method or functionally Conversion is all contained in protection scope of the present invention.
As shown in figure 1, the preferred embodiments of the present invention disclose a kind of gear box hydraulic control system, including 6 subsystems System：Oil supply subsystem 5, main oil pressure control subsystem 3, gearshift control subsystem 1, clutch control subsystem 2, lubrication control Subsystem 4 and electronic parking control subsystem 6.
1st, oil supply subsystem：Double pump fuel feeding, mechanical pump and electronic pump joint fuel feeding；
2nd, main oil pressure control subsystem：Safety relief valve and working connection control valve co- controlling；
3rd, clutch control subsystem：Control subsystem by the hydraulic oil of clutch control valve to carrying out double filtration, in control The rear end oil circuit of valve processed adds accumulator, and the oil that accumulator can absorb caused by main oil pressure is fluctuated shakes, it is achieved thereby that clutch The ride comfort that device is combined and separated；
4th, gearshift control subsystem：Gearshift control subsystem is by four groups of gear shift guiding valves and magnetic valve, reducer unit into subsystem liquid Pressure interlocking, it is ensured that the safety of whole gear change system；
5th, lubrication control subsystem：Mainly by flow spool control valve, by-passing valve, oil cooler, oil screen, clutch lubrication control Valve processed, residual pressure spool control valve composition, can realize the sufficient lubrication of gearbox bearing and wet-type dual-clutch, make whole change The parts of fast case work within the scope of a reasonable temperature；
6th, electronic parking control subsystem：By two guiding valves and a solenoid valve control, integrated level is high, simple in construction, operation It is convenient, the zip or pull bar of parking braking are eliminated, the quick parking of gearbox is realized.
The structure and the course of work of subsystems are described in detail below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1 and Fig. 6, present invention is disclosed a kind of oil supply subsystem 5.The oil supply subsystem 5 includes being used for The fuel tank 500 of hydraulic oil is provided, and for the electronic pump 501 and mechanical pump 502 to subsystems pump oil.Double pump of the present invention Filter screen 503 is provided between fuel feeding, with the fuel tank 500, the cleaning of the oil product of output is kept.The liquid of the mechanical pump and electronic pump Check valve 504 is equipped with force feed output end, the oil pressure for keeping subsystems.
With reference to shown in Fig. 1 and Fig. 4, present invention is disclosed a kind of main oil pressure control subsystem 3, including from the fuel feeding subsystem The working connection a that exports in system 5, the main oil pressure control valve 301 for controlling working connection oil pressure, the main oil pressure control valve 301 is Three-position four-way valve, it has the master that the main oil pressure control valve is overcome after the guide end 302 connected with the working connection a, logical oil Move to right its valve element after the spring force of oil pressure cntrol valve spring 303.
A branch is additionally provided with the working connection a, one is additionally provided with thereon has the guide oil of rear end feedback self-balancing voltage-controlled Guiding valve 304 processed, forms the hydraulic oil of steady pressure by the hydraulic coupling at its guide end and the spring dynamic balance of spring terminal, specifically 's：Pressure oil of the working connection a pressure oil after guide's oil pressure cntrol guiding valve 304 decompression provides pressure for the guide end of the valve Power oil, because its valve element has certain cross-sectional area, forms certain pressure with acting on the pressure oil at guide end of the valve, pushes away Movable valve plug overcomes the spring force of the other end, and the power interaction at two ends reaches the relation of a stable dynamic equilibrium.When main oil During road a pressure rise, the hydraulic fluid flow rate increase of guide's oil pressure cntrol guiding valve 304 is flowed through, through guide's oil pressure cntrol guiding valve 304 Pressure afterwards also can be with rise, and now, the guide's oil pressure for acting on guide's oil pressure cntrol guiding valve 304 is equally raised, formerly In the presence of Oil Guide, guide's oil pressure cntrol guiding valve 304 will promote valve element to be moved to spring terminal in the presence of hydraulic coupling, this When, the hydraulic oil aperture area into guide's oil pressure cntrol guiding valve 304 reduces, and the hydraulic fluid flow rate for flowing through the valve is reduced, and is passed through Hydraulic fluid pressure reduction after the valve, the guide's oil pressure for acting on the valve reduces, and under spring force, valve element is to opposite Direction is moved, and is flowed through the hydraulic oil area increase of the valve element, is flowed through the pressure oil pressure all-the-time stable after the valve dynamic at one State is balanced.It is similar when its working method is to rise when working connection pressure is reduced.
The hydraulic oil of the steady pressure leads to the spring terminal of the main oil pressure control valve, the main oil by guide's oil circuit d The openings of sizes of pressure control valve 301 controls the size of current of a magnetic valve 305 to control by TCU.
The working connection is provided with a safety relief valve 306, the oil circuit between the fuel tank and main oil pressure control valve On.The safety relief valve 306 can limit whole system maximum pressure, make whole hydraulic work system in a rational pressure In the range of, whole hydraulic system and its related work parts are protected, safety relief valve way of realization in engineer applied is more Sample, implementation method is flexible.When the pressure of system is more than setting value, the pressure at the guide end of safety relief valve 306 overcomes spring Power, move to left valve element, draining decompression.
The shape that main oil pressure control subsystem 3 is combined using one main oil pressure control valve of safety relief valve and solenoid valve control Formula.303 working methods of main oil pressure control valve are：By the size for the electric current for controlling magnetic valve 305, and then control to enter guiding valve Control of the how much realizations of spring terminal flow to pressure size, main oil is controlled by magnetic valve 305 to the control of pressure size The position of pressure control valve, the control to main oil pressure is realized by the size of the mobile control port of main oil pressure control valve position. Guide's oil pressure cntrol guiding valve 304 is fed back by rear end, using hydraulic coupling and the equilibrium relation of spring force, is provided surely for whole system Fixed guide's oil pressure.
With reference to shown in Fig. 1 and Fig. 2, present invention is disclosed a kind of gearshift control subsystem 1, including：First gear shift working connection b With the second gear shift working connection c.There is an oil circuit change-over pilot valve 105 controlled by magnetic valve S5, the oil circuit change-over pilot valve 105 can With optionally by working connection a switching connections the first gear shift working connection b or the second gear shift working connection c.The magnetic valve S5 TCU The size of its electric current of Linear Control.The oil circuit change-over pilot valve 105 is connected with a counterbalance valve 108, it is ensured that after working connection switching, In the oil duct supplied without fluid all the time with the presence of hydraulic oil, oil pressure is quickly set up beneficial to whole hydraulic shift control system.
The first gear shift working connection b and the second gear shift working connection c make hydraulic pressure by being selectively communicated with gear shift guiding valve Oil is selectively inputted to the plunger shaft of selector fork, and each selector fork can formation shelves selectively synchronous with shifting gear Position, the shifting gear includes seven forward gears and a reversing shelves gear, and its odd number shelves gear is arranged in same very On several grades of output shafts, its even number shelves gear and reverse gear arrangement of gears are on another even gear output shaft.
Specifically, preferred embodiments thereof has four selector forks, respectively the first selector fork F1, the second gear shift Shift fork F2, the 3rd selector fork F3, the 4th selector fork F4.Wherein, the first selector fork F1 is used to control correspondence synchronizer and 1 Shelves gear or 5 shelves gears synchronously form gear, and the second selector fork F2 is used to control correspondence synchronizer and 3 shelves gears or 7 grades of teeth Wheel is synchronous to form gear, and the 3rd selector fork F3 is used to control correspondence synchronizer is synchronous with R shelves gears or 4 shelves gears to form shelves Position, the 4th selector fork F4 is used to control correspondence synchronizer is synchronous with 2 shelves gears or 6 shelves gears to form gear.
Each selector fork is controlled by a gear shift guiding valve, respectively the first gear shift guiding valve 101, the second gear shift guiding valve 102nd, the 3rd gear shift guiding valve 103, the 4th gear shift guiding valve 104.For example, when the hydraulic oil in working connection passes through the second gear shift guiding valve 102 when entering in the plunger shaft of 3 shelves gear gears of control, promotes the second selector fork F2 control correspondence synchronizers and 3 grades of teeth Take turns synchronized shifting and synchronously form gear.
Each gear shift guiding valve is respectively provided with a guide end and spring terminal, and the guide end is by controlling guide's oil circuit Magnetic valve is connected with the fuel tank.It is preferred that, each gear shift guiding valve is respectively provided with the movement of its valve element of a control and determines it and open Magnetic valve S1, S2, S3, S4 of mouthful size, and the guide's oil circuit at its guide end connects with guide's oil pressure cntrol guiding valve 304.Make Gear is provided between gear shift guiding valve for two selector forks on odd number shelves output shaft or even gear output shaft Hydraulic interlock structure；The hydraulic interlock structure is hydraulic interlock oil circuit, and one end connection of the hydraulic interlock oil circuit is wherein The guide end of one gear shift guiding valve, the other end connects the spring terminal in another gear shift guiding valve.For example：With odd number shelves output shaft phase What is coordinated is the first gear shift guiding valve 101 and the second gear shift guiding valve 102, is that a hydraulic pressure is mutual between the two with hydraulic interlock structure Oil circuit 107 is locked, one end connection of the hydraulic interlock oil circuit 107 is at the guide end of the first gear shift guiding valve 101, and other end connection exists The spring terminal of second gear shift guiding valve 102.Equally there is hydraulic interlock structure between the gear shift guiding valve set on even gear output shaft.
The guide end of each gear shift guiding valve of guide's oil circuit d connections in this subsystem.The guide's oil circuit with Filter screen and throttle orifice are provided between guide end.
The course of work of gearshift control subsystem of the present invention is briefly described below.
Fuel tank controls the position of oil circuit change-over pilot valve 105 respectively to first by working connection a fuel feeding through the 5th magnetic valve S5 Gear shift working connection b and the second gear shift working connection c fuel feeding, when the magnetic valve for controlling oil passage change-over valve does not have electric current, now the One gear shift working connection b can be 4 grades, 5 grades, 6 grades, 7 grades of this four gear fuel feeding, when the electromagnetism of control oil circuit change-over pilot valve 105 When valve S5 reaches certain electric current, the now switching of oil circuit change-over pilot valve 105 oil circuit, the second gear shift working connection c now to R grades, 1 Shelves, 2 grades, 3 grades of this four gear fuel feeding.
Working connection a hydraulic oil after guide's oil pressure cntrol guiding valve 304 be respectively：First gear shift guiding valve 101, second changes Shelves guiding valve 102, the 3rd gear shift guiding valve 103, the 4th gear shift guiding valve 104, oil circuit change-over pilot valve 105 provides stable guide oil, is The oil circuit smooth-going switching of oil circuit change-over pilot valve 105, which is provided, to be ensured, makes the guide oil of control gear shift guiding valve not acceptor's pressure fluctuation Influence.
Before gear is not formed, the first gear shift guiding valve 101, the second gear shift guiding valve 102, the 3rd gear shift guiding valve 103, the 4th Gear shift guiding valve 104 is in the presence of spring force, and gear shift guiding valve is in left position.First gear shift guiding valve 101, the second gear shift guiding valve 102, the 3rd gear shift guiding valve 103, the 4th gear shift guiding valve 104, oil circuit change-over pilot valve 105 position movement respectively by magnetic valve S1, S2, S3, S4, S5 are controlled, the switching of the mobile corresponding oil circuit of carry out by controlling gear shift spool position, and then complete shelves The switching of position.
The synchronous shifting gear that formed due to forming 1 grade, 3 grades, 5 grades, 7 grades on same axis, formed R grades, 2 grades, 4 Shelves, 6 grades of the synchronous shifting gear that formed are on same axis, in order to avoid being exported caused by the misoperation of magnetic valve at same Two gears are formed on axle simultaneously, the damage or vehicle in turn resulting in gearbox are unable to normally travel, therefore, utilize hydraulic pressure The mode of interlocking respectively to 1 grade, 3 grades, 5 grades, 7 grades progress hydraulic protectings, while in the same way to R grades, 2 grades, 4 grades, 6 Shelves carry out hydraulic interlock protection.
Specific gear switch is as follows：Exemplified by 1 grade, hydraulic oil enters working connection a, and now magnetic valve S5 is powered, oil circuit The guide end of change-over pilot valve 105 forms closed cavity volume, sets up pilot pressure, promotes the valve element of oil circuit change-over pilot valve 105 to overcome bullet Spring force is moved to left, and the valve is worked in right position, by the second gear oil circuit c UNICOMs, now the first gear oil circuit b cut-offs.Magnetic valve S1 Work, the guide end of the first gear shift guiding valve 101 gradually forms closed cavity volume, sets up guide's oil pressure, promotes the first gear shift guiding valve 101 Spring force is overcome to be moved to the left, by the second gear shift working connection c and the plunger shaft UNICOM of 1 grade of control, piston promotes selector fork to move Dynamic, under the control of magnetic valve, quick flat consequent relief is into 1 grade.Meanwhile, guide's oil pressure at the guide end of the first gear shift guiding valve 101 is made Ensure that the second gear shift guiding valve 102 is in left position together for the spring terminal of the second gear shift guiding valve 102, and spring, now, even if electric There is oil pressure at magnet valve S2 misoperations, the guide end of the second gear shift guiding valve 102, because the spring terminal hydraulic coupling of gear shift guiding valve is than guide end Pilot pressure is big or equally big, plays the role of spring force simultaneously in spring terminal, therefore lead to the plunger shaft of 3,7 gears and also will not There is hydraulic oil entrance, it is to avoid the gear of gear is formed on same axis two pairs of gears synchronous situation for forming gear simultaneously Occur.Similarly, when formed 3 grades when, control 1 grade, 5 grades, 7 grades of oil circuit be in cut-off state, such control mode is with regard to shape Into hydraulic interlock, guarantee is provided for the normal work of gearbox.
Before 1 grade rises 2 grades, 2 grades of pre- gear selecting work has been completed, and its operation principle is identical with 1 grade of operation principle, i.e., 1 grade rises 2 grades, and magnetic valve S5 is powered, and pilot pressure is set up at the guide end of oil circuit change-over pilot valve 105, promotes 105 grams of oil circuit change-over pilot valve Take spring force to move to left, make the right position work of the valve, by the second gear oil circuit c UNICOMs, now the first gear oil circuit b cut-offs.Now, with It is 0A i.e. by the magnetic valve S1 of the first gear shift guiding valve 101 current control, the oil circuit of the first gear shift guiding valve 101 control is in cut-off State.Control the magnetic valve of the 4th gear shift guiding valve 104 now to use the size of TCU Linear Control electric currents, progressively reach maximum, liquid Force feed acts on the plunger shaft of 2 grades of control, and piston movement promotes shift fork smoothly to move, and quick flat consequent relief is into 2 grades.4th changes Oil pressure is set up at the guide end of shelves guiding valve 104, promotes the 4th gear shift guiding valve 104 to be moved to the left, meanwhile, act on the 4th gear shift guiding valve 104 guide oil acts on shift valve C spring terminal, the oil circuit of R grades and 4 grades of control is in cut-off state.Similarly, formation is worked as At 4 grades, R grades, 2 grades, 6 grades are in cut-off state.Its hydraulic interlock protected mode with it is foregoing similarly, so avoid same Misoperation on root axle because of magnetic valve forms the generation of two gear stages simultaneously, it is to avoid the risk that gearbox is damaged.
Show with reference to Fig. 1 and Fig. 3, present invention is disclosed a kind of clutch control subsystem 2, for controlling the first clutch respectively The combination and separation of device 201 and second clutch 202, including the first clutch 201 is led to by the working connection 30 respectively The corresponding first clutch control valve 203 and second clutch control valve being provided with the fluid pressure line of second clutch 202 204.Specifically, the first clutch control valve 203 and second clutch control valve 204 are VFS magnetic valves.VFS electromagnetism The characteristics of valve is can be to pressure and precise control of flew.The first clutch control valve 203 has guide end 2031 and bullet Spring end 2032, the oil circuit of the output end of the first clutch control valve 203 sets backfeed loop, and the backfeed loop is communicated in institute State between guide end 2031 and spring terminal 2032, the opening diameter of the throttle orifice 2033 of the feedback of guide end 2031 oil circuit is less than The opening diameter of the throttle orifice 2034 of the feedback of spring terminal 2032 oil circuit；The oil circuit knot of the second clutch control valve 204 Structure is identical with the oil channel structures of the first clutch control valve 203.
The control accuracy of clutch of the present invention is embodied in：By the oil circuit of output end on rear side of VFS clutch control valves If backfeed loop, i.e., at guide end 2031 and spring terminal 2032 provided with feedback oil circuit, the throttle orifice of oil circuit is fed back at guide end 2031 The size that 2033 size feeds back the throttle orifice 2034 of oil circuit than spring terminal 2032 is small, certain pressure differential can be formed, in electricity When magnet valve is controlled, the accuracy that control clutch is combined and separated can be improved.Meanwhile, the first clutch control valve 203 An accumulator 205 is respectively connected with the output end of second clutch control valve 204.The accumulator 205 can be absorbed because of main oil Oil caused by the fluctuation on road shakes and hydraulic shock, makes the combination of clutch and both states of separation more steady.
The input of the first clutch control valve 203 and second clutch control valve 204 is respectively connected with filter screen 206.The output end of the first clutch control valve 203 and second clutch control valve 202 is respectively connected with filter screen 207.It is main Hydraulic oil in oil circuit a reaches VFS clutch control valves after being filtered through filter screen 206, and hydraulic oil passes through VFS clutch control valves Afterwards, being filled into again up to clutch through screen pack 207.The main function that the filter screen 207 is set be when the clutch is disengaged, from During hydraulic oil draining inside clutch plunger shaft can after the filter screen 207 again by clutch control valve draining, which ensure that During draining, clutch control valve will not take back the impurity inside clutch and clamping stagnation because of fluid.
In order to realize hybrid power, the clutch hydraulic pressure control subsystem also includes separation clutch 210, the separation The side connection engine of clutch 210, opposite side connection gearbox；The separation clutch of the control separation clutch break-make Control valve 209, the separation clutch control oil is in parallel with first double clutch control oil circuit；Relative set is described Separate the accumulator of the output end of clutch control valve.
In vehicle start, the power source of driving gearbox is motor, and it is inverse that the working method of motor is that vehicle power passes through Become device and provide voltage and current to motor, the rotor of motor is the outer hub of double clutch, drive the drive gear of mechanical pump with it is double The outer hub of clutch is connected as a single entity.Electrical power work after, the rotor of motor is rotated in the presence of electromagnetic force, at the same drive pair from The outer hub of clutch is rotated, now driving gear drives working machine pump, and power is delivered to by motor to double clutch gearbox Output shaft, driving vehicle start traveling.Now, the oil circuit for leading to separation clutch is in cut-off state, and engine does not work, by In motor work be mainly used in vehicle launch, run at a low speed, vehicle frequent start-stop when, effectively avoid engine at these Idling conditions under operating mode, improves the fuel efficiency of engine, and another situation is that when engine fuel is not enough, motor can be with Certain endurance is reached using on-vehicle battery driving gearbox.
After the completion of vehicle start, vehicle reaches certain rotating speed, and engine is started working, defeated by speed sensor signal Enter, the control of control system, now, the magnetic valve of control separation clutch is started working, towards the oil of separation clutch cavity volume Road is oil-filled, separation clutch overcome separation clutch retraction springs elastic force start cunning rub, when engine rotating speed and motor drive When the rotating speed of the outer hub of dynamic double clutch is consistent, solenoid valve control separation clutch is completely combined, motor power-off, gearbox it is dynamic Power input is engine, and motor and engine complete power drive exchange.When needing motor intervention work, engine stop work When making, control system makes gearbox be in a stable rotating speed transition, this time control by the size of controlled motor stator current The electromagnetic valve current of system separation clutch is gradually reduced, and the oil pressure of control separation clutch is gradually reduced, and separates clutch separation, Engine stop works, motor driving gearbox work.
During joint driving, with reference to separation clutch, applied to climbing or overtaking other vehicles, the i.e. intervention of motor, equivalent to hair Motivation provides stronger power, and the acceleration of vehicle is more preferable.
The working connection a leads to the first clutch 201, second clutch 202, the liquid for separating clutch 210 respectively Pressure pipe road is provided with pressure sensor 208.The pressure sensor 208 be positioned close to the first clutch 201, second from At clutch 202, the plunger shaft of separation clutch 210.I.e. the present invention sets pressure in the control oil circuit at clutch piston cavity Sensor, the pressure value measured is provided closer to the actual value of the control pressure of clutch for the self-learning function of whole system Reliable guarantee.
The control mode of clutch control subsystem of the present invention is the size control by controlling the electric current of clutch control valve Valve element processed and valve body coordinate the size control of opening enter clutch piston cavity hydraulic oil number, clutch plunger is adjusted The size of hydraulic fluid pressure in chamber, and then adjust the size of clutch transmission torque.
In the present invention in clutch control subsystem, the control loop of clutch is provided with rear side of clutch control valve Accumulator, can absorb the pressure fluctuation caused by fuel feeding is unstable, when clutch is combined, and can avoid shift shock and change The problems such as gear shake；Pressure sensor is provided with clutch control loop, in real time can be transmitted clutch pressure signals To TCU, guarantee is provided for the closed-loop control of clutch, data supporting is provided for the self-learning function of gearbox, it is whole to become The control of fast case is more accurate；Front and rear filter screen is provided with clutch control oil, it is ensured that the cleannes of control oil circuit, valve The situation that clamping stagnation occurs in core seldom occurs.
With reference to shown in Fig. 1 and Fig. 5, present invention further teaches a kind of lubrication control subsystem.The lubrication control Subsystem includes the working connection a for exporting hydraulic oil from fuel tank and the lubrication exported from the main oil pressure control valve 301 Oil circuit m.The main oil pressure control valve 301 has the guide end connected with the working connection a.When gearbox works, hydraulic oil leads to The left side guide end 302 that throttle orifice acts on the main oil pressure control valve 301 is crossed, now hydraulic oil plays guide, promoted The main oil pressure control valve 301 is moved to the right, and now the main oil pressure control valve 301 works in middle position, by working connection a and profit Lubricating oil road m is connected, and lubricating oil is provided for whole lubricating and cooling system.
The lubricant passage way m is provided with flow control valve 403, and what the lubricant passage way m was exported has certain pressure Hydraulic oil is divided into two-way after the flow control valve 403, wherein hydraulic oil promotes flow to control after throttle orifice H5 all the way Valve 403 moves to left valve element after overcoming flow control valve spring S6 spring force, and the second road hydraulic oil divides again after throttle orifice H6 For two-way, the first via reaches the spring terminal of the flow control valve 403 after throttle orifice H7, and being worked with spring one, it is described to make The valve element of flow control valve 403 is moved to right, so that pilot pressure one dynamic equilibrium of formation with right side, the output of the second tunnel has stable The hydraulic oil of pressure and flow, enters measured lubrication oil circuit n, the hydraulic oil of the measured lubrication oil circuit n after throttle orifice H6 Pressure filter 410 is reached after oil cooler 408, lubrication oil circuit e is formed.Wherein, the pressure filter 410 is provided with parallel connection Check valve 409, when pressure filter 410 is blocked, check valve 409 is opened, it is ensured that the lubrication of gearbox bearing and clutch Cooling.Meanwhile, provided with oil circuit in parallel on the oil circuit that oil cooler 408 is connected with pressure filter 410, the oil circuit in parallel is provided with side The by-passing valve 404 of the lower normal off of port valve spring S7 effects.The by-passing valve 404 has a guide end, and the guide end passes through throttling Hole H8 is connected with the measured lubrication oil circuit n.When the oil cooler 408 connected with pressure filter 410 oil circuit block when, it is described By-passing valve 404 is opened, it is ensured that gearbox has enough lubricating oil, vehicle is continued traveling.
Lubrication oil circuit e after pressure filter is divided into two-way, is respectively used to clutch lubrication and gearbox inner bearing profit It is sliding.Wherein, the lubrication oil circuit e lubricated for gearbox inner bearing is divided into two-way, respectively axle lubrication oil circuit h and axle Hold and be equipped with throttle orifice on lubrication oil circuit j, every branch road.Purpose provided with throttle orifice is entered for whole lubricating and cooling system Row pressurize, this is the common knowledge of throttle orifice, is hereafter repeated no more.
The lubrication oil circuit e for clutch cooling and lubricating is divided into two-way again, all the way by guiding valve 407 formed from Clutch lubrication oil circuit s provides lubrication for separation clutch, and the flow opening of the guiding valve 407 is controlled by magnetic valve 411； Another road is by forming clutch lubrication cooling oil path g after a lubrication flow control valve 406.Specifically, cooling down profit for clutch Sliding lubricating cooling oil again passes by the filtering of small filter screen after the accurate control of lubrication flow control valve 406, is clutch Enough lubricating cooling oils are provided.The lubrication flow control valve 406 controls electricity by gear box control unit TCU control signals The size of magnetic portion electric current carrys out regulating valve openings of sizes.
The output end of the lubrication flow control valve 406 connects a residual stress control valve 405, the remnants by oil circuit Stress Control valve 405 includes a guide end and a spring terminal, described respectively positioned at the both sides of the residual stress control valve 405 The guide end of residual stress control valve 405 is connected with the lubrication oil circuit e, and the lubrication oil circuit e is also by described Residual stress control valve 405 is connected with a draining oil circuit f, and the draining oil circuit f output ends lead to the fuel tank.
The output end of the lubrication flow control valve 406 is connected with the spring terminal of the residual stress control valve 405.It is described Oil circuit tie point between the output end of lubrication flow control valve 406 and the residual stress control valve 405 is located at the rear side Between small filter screen and clutch.
The reason for so setting is：During due to clutch normal work, it is necessary to lubricating cooling oil it is less, in sliding rub The lubrication Chuck Steak needed, in order to which the pressure for ensureing lubricating and cooling system is unlikely excessive, lubrication control of the present invention System is provided with the residual stress control valve 405.The main function of the residual stress control valve 405 is when clutch needs greatly During the lubricating cooling oil of flow, lubrication flow control valve 406 is opened, and is had enough in the spring terminal of residual stress control valve 405 Hydraulic oil, the hydraulic oil of the spring terminal of residual stress control valve 405 and spring collective effect make the residual stress control Valve 405 is in cut-off state, lubricating oil will not draining to fuel tank；It is cold due to lubricating when the lubricating oil that clutch needs is less But the lubricating oil of system is stable flow, in order to which the pressure for ensureing whole lubricating and cooling system is unlikely excessive, residual stress control The guide end of valve 405 processed is moved to the left in the presence of hydraulic oil, lubrication oil circuit e and draining oil circuit f UNICOMs, is let out to fuel tank Oil；When the lubrication oil circuit e pressure is smaller, in the presence of residual pressure control valve spring S5, residual stress control Valve 405 moves right, and closes draining.The setting of residual stress control valve 405 both ensure that system had enough flows, and energy Ensure that the pressure of lubrication is unlikely excessive.
In the present invention, when the pressure of main oil pressure is excessive, the working position of main oil pressure control valve 301 can be in left position, now, A part of hydraulic oil draining in working connection a is to fuel tank, and another part hydraulic oil flows to lubricant passage way m.In order to ensure main oil pressure Control valve 301 in high pressure not because draining excessively causes lubricating system hydraulic pressure shortage of oil, in the right-hand member of main oil pressure control valve 301, I.e. the spring terminal of main oil pressure control valve 301 is provided with guide's oil circuit d, and the big of spring terminal hydraulic fluid pressure is controlled by magnetic valve 305 It is small to be controlled the location of main oil pressure control valve 301.
Lubrication control subsystem of the invention whole has all the time by the control of series of valves, whole lubricating and cooling system There is the lubricating cooling oil of abundance, make the sufficiently cool lubrication of parts of transmission internal, it is ensured that gearbox can be stablized just Often work.System is provided with flow control valve, by the guide end self feed back of flow control valve, spring terminal feedback and spring force in stream The dynamic equilibrium of the axial direction of control valve, it is ensured that lubricating and cooling system of the present invention has stable pressure and flow；This hair The bright oil circuit in parallel in pressure filter is provided with check valve, it is ensured that provided enough for whole system when pressure filter fails or blocks Lubricating cooling oil, it is ensured that gearbox can continue to normal work；Oil circuit of the present invention after oil cooler and pressure filter series connection is set There is by-passing valve, it is ensured that when oil cooler occurs to block or this oil circuit is completely plugged, it is gearbox still to have enough hydraulic oil Bearing and clutch enough lubricating cooling oil is provided；The present invention is provided with residual pressure control valve, limits lubrication of the present invention The MTP of cooling system, it is ensured that the safety of lubricating and cooling system；Lubrication flow control in clutch lubrication oil circuit of the present invention Valve processed is controlled using VFS magnetic valves, more more accurate than using VBS solenoid valve controls, it is ensured that clutch has in sliding rub Enough lubrication flows, make the life-span of clutch be significantly improved；The present invention is provided with guide's oil pressure cntrol guiding valve, is Main oil pressure control valve provides stable guide's oil pressure.
Show with reference to Fig. 1 and Fig. 7, present invention is disclosed a kind of electronic parking control subsystem, it, which has, connects the main oil Road a park pawl valve 607, the park pawl valve 607 controls park pawl executing agency to carry out parking or stay by oil circuit Car is unlocked, and the park pawl valve 607 is two position three-way valve, is selectively respectively communicated with parking unblock oil circuit z and parking oil circuit y。
The park pawl valve 607 includes spring terminal and guide end, and the spring terminal carries out oil pressure by a magnetic valve 604 Control.The working connection a is communicated in the guide of the park pawl valve 607 by a pilot slide valve 304 by guide's oil circuit d End.The pilot slide valve 304 has a branch road, and provided with filter screen 603, the branch road connects the bullet of the park pawl valve 607 Spring end simultaneously connects the fuel tank by the internal oil passages of the magnetic valve 604.The stable oil pressure that the pilot slide valve 304 is produced Guide oil is filtered again through screen pack 603 to the impurity in guide oil, and the spring terminal for park pawl valve 607 is provided surely Surely the hydraulic oil cleaned, this part guide oil is controlled by magnetic valve 604.
During gearbox normal work, the control electric current of magnetic valve 604 is 0, now, the liquid of the spring terminal of park pawl valve 607 Force feed is by the internal oil passages draining of magnetic valve 604 to fuel tank.Because the spring terminal of park pawl valve 607 is without oil pressure, it is in guide Hold in the presence of oil pressure, overcome spring force to be moved to the left, main oil pressure connection parking unblock oil circuit z, parking oil circuit y are in cut-off shape State, now park pawl is in released state.When parking oil circuit y is in cut-off state, connection is provided with control device Logical oil circuit y and fuel tank oil circuit, make oil circuit y not form back pressure, it is ensured that the normal work of executing agency.
The park pawl valve 607 controls oil circuit x to connect a parking guiding valve 606 by parking, when vehicle needs to enter P During shelves, the energization work of magnetic valve 604 is ended by the oil circuit of the inside draining of magnetic valve 604.Now, the bullet of park pawl valve 607 Oil pressure is set up at spring end, due to the oil pressure and the consistent pressure of guide's oil pressure of the spring terminal of park pawl valve 607, park pawl The valve element of valve 607 resets in the presence of park pawl valve spring 608.Now, parking unblock oil circuit z cut-offs, parking control oil Road x is connected.It should be noted that parking controls oil circuit x before connection, work of the parking guiding valve 606 in parking slide valve spring 605 Left position, i.e. parking oil circuit y cut-offs are in lower.And when parking control oil circuit x is connected, due to the elder generation of the parking guiding valve 606 The end connection parking control oil circuit x is led, so parking guiding valve 606 overcomes spring force to be moved to the left in the presence of guide oil, Parking oil circuit y is connected, the oil communication of park pawl executing agency.So, by the control of magnetic valve 604, realize and stay The connection of car ratchet executing agency oil circuit, park pawl mechanism carries out parking, it is achieved thereby that the parking of electro-hydraulic system. When parking oil circuit y is in UNICOM's state, the oil circuit of UNICOM oil circuit z and fuel tank is provided with control device, makes oil circuit z will not Form back pressure, it is ensured that the normal work of control device.
Except above-mentioned gear box hydraulic control system, the present invention also provide it is a kind of include above-mentioned gearbox and can also control be The hybrid vehicle of system, other Each parts of the hybrid vehicle refer to prior art, will not be repeated here.
It should be understood that, although the present specification is described in terms of embodiments, but not each embodiment only includes one Individual independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art will should say Bright book is as an entirety, and the technical scheme in each embodiment may also be suitably combined to form those skilled in the art can With the other embodiment of understanding.
Those listed above is a series of to be described in detail only for feasibility embodiment of the invention specifically Bright, they simultaneously are not used to limit the scope of the invention, all equivalent implementations made without departing from skill spirit of the present invention Or change should be included in the scope of the protection.

Claims (17)

1. gear box hydraulic control system, for controlling first clutch and second clutch, it is characterised in that：Including
Fuel tank for providing hydraulic oil,
For hydraulic oil to be exported from fuel tank to the oil supply subsystem of working connection,
Main oil pressure control valve for controlling working connection oil pressure, the main oil pressure control valve is three-position four-way valve, and it has and institute Make after the spring force for stating the main oil pressure control valve spring that the main oil pressure control valve is overcome after the guide end of working connection connection, logical oil Its valve element is moved to right,
And connected by working connection gearshift control subsystem, clutch control subsystem, lubrication control subsystem,
The clutch hydraulic pressure control subsystem includes,
First clutch control valve and second clutch control valve, are separately positioned on and lead to first clutch by the working connection On the fluid pressure line parallel with one another of device and second clutch,
Clutch is separated, the side connection engine of the separation clutch, opposite side connects gearbox,
The separation clutch control valve of the control separation clutch break-make, the separation clutch control oil and described first Double clutch control oil circuit is in parallel；
Relative set is in the defeated of the first clutch control valve, second clutch control valve and separation clutch control valve respectively Go out the accumulator at end.
2. gear box hydraulic control system according to claim 1, it is characterised in that：The first clutch control valve tool There are guide end and spring terminal, the oil circuit of the output end of the first clutch control valve sets backfeed loop, and the backfeed loop connects Pass through between the guide end and spring terminal, the opening diameter of the throttle orifice of the guide end feedback oil circuit is less than the spring terminal Feed back the opening diameter of the throttle orifice of oil circuit；The second clutch control valve, separate clutch control valve oil channel structures with The oil channel structures of the first clutch control valve are identical.
3. gear box hydraulic control system according to claim 2, it is characterised in that：The first clutch control valve, Second clutch control valve, the input of separation clutch control valve and output end are respectively connected with filter screen；The working connection point Not Tong Wang the first clutch, second clutch, separate clutch fluid pressure line on be respectively provided with pressure sensor, it is described Pressure sensor is arranged on the first clutch control valve, second clutch control valve, the output for separating clutch control valve End, and at the first clutch, second clutch, the plunger shaft of separation clutch.
4. gear box hydraulic control system according to claim 1, it is characterised in that：One point is additionally provided with the working connection Branch, one is additionally provided with thereon, and there is rear end to feed back guide's oil pressure cntrol guiding valve of self-balancing, pass through the hydraulic coupling and bullet at its guide end The hydraulic oil of the spring dynamic balance formation steady pressure at spring end, the hydraulic oil leads to the main oil pressure control valve by guide's oil circuit Spring terminal, the openings of sizes of the main oil pressure control valve controls the size of current of a magnetic valve to control by TCU.
5. gear box hydraulic control system according to claim 1, it is characterised in that：The oil supply subsystem includes difference Connect the mechanical pump and electronic pump of the fuel tank, the mechanical pump and electronic pump selectively hydraulic oil is exported from fuel tank to It is equipped with working connection, the hydraulic oil output end of the mechanical pump and electronic pump on check valve, input and is equipped with filter screen；It is described Working connection is provided with a safety relief valve, the oil circuit between the fuel tank and main oil pressure control valve.
6. gear box hydraulic control system according to claim 1, it is characterised in that：The gearshift control subsystem includes
The one group of selector fork driven by the hydraulic oil, the selector fork by synchronizer be used for optionally with gear Gear synchronous formation gear, the shifting gear includes seven forward gears and a reversing shelves gear, its odd number shelves gear It is arranged on same odd number shelves output shaft, its even number shelves gear and reverse gear arrangement of gears are in another even gear output shaft On,
The gear shift guiding valve equal with the selector fork quantity and the magnetic valve for controlling each gear shift guiding valve, same defeated Shaft is provided with gear hydraulic interlock structure；
The hydraulic oil in working connection selectively inputted to the first gear shift working connection in the plunger shaft of selector fork respectively and Second gear shift working connection；
Oil circuit change-over pilot valve for switching the first gear shift working connection and the second gear shift working connection.
7. gear box hydraulic control system according to claim 6, it is characterised in that：The gearshift control subsystem includes There are four selector forks and four gear shift guiding valves corresponding thereto, every two pairs of gear shift guiding valves and selector fork are acted on together A piece output shaft, each gear shift guiding valve is respectively provided with the magnetic valve of a control its valve element movement, and with a guide end and Spring terminal, the guide end is connected by magnetic valve with the fuel tank, and the hydraulic interlock structure acts on to be arranged on two The hydraulic interlock oil circuit between gear shift guiding valve on same output shaft, one end connection wherein one of the hydraulic interlock oil circuit The guide end of individual gear shift guiding valve, the other end connects the spring terminal in another gear shift guiding valve.
8. gear box hydraulic control system according to claim 7, it is characterised in that：Slided by guide's oil pressure cntrol The hydraulic oil with steady pressure formed after valve, the guide of each gear shift guiding valve is connected by the guide's oil circuit End, is provided with filter screen and throttle orifice between the guide's oil circuit and the guide end of gear shift guiding valve.
9. gear box hydraulic control system according to claim 8, it is characterised in that：The guide of the oil circuit change-over pilot valve Oil circuit passes through a solenoid valve control；The oil circuit change-over pilot valve is connected with a counterbalance valve.
10. gear box hydraulic control system according to claim 1, it is characterised in that：The lubrication controls subsystem System, including
The lubricant passage way exported from the main oil pressure control valve,
Connect the oil cooler and pressure filter of the lubricant passage way, and the lubrication exported from the oil cooler and pressure filter Oil circuit, the lubrication oil circuit is divided into two-way, is respectively used to clutch lubrication and gearbox inner bearing lubrication；
The lubrication oil circuit lubricated for gearbox inner bearing is divided into two-way, respectively axle lubrication oil circuit and bearing Lubrication oil circuit,
The lubrication oil circuit for clutch lubrication is cooled down by forming clutch lubrication after a lubrication flow control valve Oil circuit, the lubrication flow control valve by the size of gear box control unit TCU control signal control valve electromagnetism portion electric current come Regulating valve openings of sizes, the output end of the lubrication flow control valve connects a residual stress control valve by oil circuit, described residual Residue stress control valve, which includes a guide end and one, has the spring terminal of residual stress control valve spring, respectively should positioned at the remnants The both sides of force control valve, the guide end of the residual stress control valve is connected with the lubrication oil circuit, the lubrication Oil circuit is also by the residual stress control valve and a draining oil communication, and the draining oil circuit output end leads to the fuel tank, The output end of the lubrication flow control valve is connected with the spring terminal of the residual stress control valve.
11. gear box hydraulic control system according to claim 10, it is characterised in that：The lubrication flow control valve Front and rear sides are equipped with a filter screen, are front side filter screen and rear side filter screen, the output end of the lubrication flow control valve and institute respectively The oil circuit tie point stated between residual stress control valve is located between the rear side filter screen and clutch.
12. gear box hydraulic control system according to claim 11, it is characterised in that：The lubrication flow control valve Oil circuit between output end and the residual stress control valve spring end is provided with throttle orifice, the elder generation of the residual stress control valve Lead and throttle orifice is provided between end and the lubrication oil circuit.
13. gear box hydraulic control system according to claim 12, it is characterised in that：The lubricant passage way is provided with one Flow control valve, the hydraulic oil of the lubricant passage way output is divided into two-way after the flow control valve, wherein hydraulic pressure all the way Oil is moved after flow control valve overcomes the spring force of flow control valve spring through throttle orifice pusher moves to left valve element, the second road hydraulic oil It is divided into two-way again after throttle orifice, the first via reaches the spring terminal of the flow control valve after throttle orifice, with spring one Working moves to right the valve element of the flow control valve, so that pilot pressure one dynamic equilibrium of formation with right side, the second road is defeated Go out the hydraulic oil with steady pressure and flow, into measured lubrication oil circuit, the hydraulic oil of the measured lubrication oil circuit enters institute State oil cooler.
14. gear box hydraulic control system according to claim 13, it is characterised in that：The inlet and outlet of fuel channel of the pressure filter A upper check valve in parallel.
15. gear box hydraulic control system according to claim 14, it is characterised in that：The measured lubrication oil circuit has One branch road, the branch road provided with one case of by-pass valve effect under normal off by-passing valve, the branch road with pass through the oil cooling The oil circuit of device is in parallel, and the by-passing valve has a guide end, the guide end and the measured lubrication oil communication.
16. gear box hydraulic control system according to claim 1, it is characterised in that：Also include electronic parking and control son System, it has the park pawl valve for connecting the working connection, and the park pawl valve controls park pawl to perform by oil circuit Mechanism carries out parking or parking unblock, and the park pawl valve is two position three-way valve, is selectively respectively communicated with parking unblock oil Road and parking oil circuit.
17. a kind of hybrid vehicle, it is characterised in that：Including engine, motor, and such as any institute of claim 1 to 16 The gear box hydraulic control system stated.
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CN113883259A (en) * 2021-09-30 2022-01-04 重庆青山工业有限责任公司 Hydraulic system for controlling lubricating oil flow of three-clutch transmission
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