CN105317997A - Hydraulic control system and control method of transmission and automobile - Google Patents
Hydraulic control system and control method of transmission and automobile Download PDFInfo
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- CN105317997A CN105317997A CN201410314954.XA CN201410314954A CN105317997A CN 105317997 A CN105317997 A CN 105317997A CN 201410314954 A CN201410314954 A CN 201410314954A CN 105317997 A CN105317997 A CN 105317997A
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Abstract
Provided are a hydraulic control system and control method of a transmission and an automobile. The hydraulic control system comprises a clutch control device, a synchronizer control device and a hydraulic oil supply device for supplying oil to the clutch control device and the synchronizer control device. Control of two clutches can be achieved by arranging a first pressure magnetic valve, a first clutch actuator, a second pressure magnetic valve and a second clutch actuator in the clutch control device, control of a synchronizer can be achieved by arranging a third pressure magnetic valve, a fourth pressure magnetic valve, a first logic valve, a second logic valve and multiple synchronizer actuators, the structure of the hydraulic control system is simplified, the cost is reduced, and the control process can be more reliable and convenient.
Description
Technical field
The present invention relates to automobile technical field, particularly relate to a kind of hydraulic control system of double-clutch speed changer, a kind of hydraulic control system for the multiple synchronizers in controlled variator, a kind of method of the multiple synchronizers utilized in hydraulic control system controlled variator and a kind of automobile.
Background technique
Double-clutch speed changer (DualClutchTransmission, be called for short DCT) be a kind of novel speed changer, Transmission gear is arranged on two input shafts connecting with two clutches by it by odd, even number, complete shift process by the alternately switching of two clutches, realize power gear shifting.Double-clutch speed changer combines the advantage of hydrodynamic mechanical transmission and electric control mechanical type automatic speed variator, and transmission efficiency is high, structure is simple, not only ensure that power character and the Economy of vehicle, and significantly improves the travelling comfort of vehicle operating.
The shift process of double-clutch speed changer sends control signal by the ECU (Electrical Control Unit) of automobile, and hydraulic control control system realizes.Therefore, hydraulic control system has very important status in double-clutch speed changer.Usually, the hydraulic control system of double-clutch speed changer comprises: clutch control device, synchronizer control gear and the operating oil supplying device to clutch control device and synchronizer control gear fuel feeding.But, in the hydraulic control system of existing double-clutch speed changer, the structure often more complicated of clutch control device and synchronizer control gear, cause the complicated structure of whole hydraulic control system, so not only make the control of hydraulic control system become complicated, and be unfavorable for the manufacture cost and the manufacture difficulty that reduce double-clutch speed changer.
Summary of the invention
The problem to be solved in the present invention is: the hydraulic control system complex structure of existing speed changer, especially double-clutch speed changer.
For solving the problem, according to an aspect of the present invention, provide a kind of hydraulic control system of double-clutch speed changer, comprise clutch control device, synchronizer control gear and the operating oil supplying device to described clutch control device and synchronizer control gear fuel feeding;
Described clutch control device comprises: the first pressure solenoid valve, the second pressure solenoid valve, the first clutch final controlling element be connected with the working hole of described first pressure solenoid valve by oil duct and the second clutch final controlling element be connected with the working hole of described second pressure solenoid valve by oil duct;
Described synchronizer control gear comprises: the 3rd pressure solenoid valve, the 4th pressure solenoid valve;
Have two filler openings, multiple working hole and be the first logical valve of two-position valve, each in two filler openings of described first logical valve connects to corresponding in the working hole of described 3rd pressure solenoid valve and the working hole of described 4th pressure solenoid valve respectively by oil duct;
Have multiple filler opening, multiple working hole and be the second logical valve of two-position valve, each in described multiple filler opening of described second logical valve connects to corresponding in all working mouth of described first logical valve respectively by oil duct;
Control the first control device of the position of the spool of described first logical valve;
Control the second control device of the position of the spool of described second logical valve;
Multiple synchronizer final controlling element, each in all working mouth of described second logical valve connects to corresponding in all hydraulic fluid ports of described multiple synchronizer final controlling element respectively by oil duct, control the acting in conjunction of the position of the position of the spool of described first logical valve and the spool of described second logical valve of described second control device control at described first control device under, the working hole of described 3rd pressure solenoid valve, the working hole of described 4th pressure solenoid valve alternatively communicate respectively with two hydraulic fluid ports of synchronizer final controlling element described in one of them;
Described hydraulic supply unit is connected with the filler opening of the filler opening of the filler opening of described first pressure solenoid valve, described second pressure solenoid valve, described 3rd pressure solenoid valve, the filler opening of described 4th pressure solenoid valve by oil duct.
Optionally, described first control device is pressure opening and closing valve, and the filler opening of described first control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described first control device is connected by the control mouth of oil duct with described first logical valve.
Optionally, described second control device is pressure opening and closing valve, and the filler opening of described second control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described second control device is connected by the control mouth of oil duct with described second logical valve.
Optionally, described clutch control device also comprises: be serially connected in the first flow control valve between described first pressure solenoid valve and described first clutch final controlling element by oil duct.
Optionally, described clutch control device also comprises: be serially connected in the second control valve between described second pressure solenoid valve and described second clutch final controlling element by oil duct.
Optionally, described double-clutch speed changer is 6 fast double-clutch speed changers or 7 fast double-clutch speed changers, and the quantity of described synchronizer final controlling element is four.
Optionally, described hydraulic supply unit props up oil duct by the difference on same main oil gallery and is connected with the filler opening of the filler opening of the filler opening of described first pressure solenoid valve, described second pressure solenoid valve, described 3rd pressure solenoid valve, the filler opening of described 4th pressure solenoid valve respectively.
Optionally, described operating oil supplying device comprises:
For the fuel tank of storage liquid force feed;
Oil pump, its entrance is connected with the oil duct leading to described fuel tank;
Order about described oil pump to rotate and from the motor of described fuel tank oil suction;
By the bypass valve that oil duct is connected with described fuel pump outlet;
By the accumulator that oil duct is connected with described bypass valve.
Optionally, each in described first clutch final controlling element, described second clutch final controlling element and described multiple synchronizer final controlling element is oil hydraulic cylinder, its have cylinder body and can in cylinder body reciprocating piston.
According to a further aspect in the invention, provide a kind of hydraulic control system for the multiple synchronizers in controlled variator, comprise synchronizer control gear and the operating oil supplying device to described synchronizer control gear fuel feeding, described synchronizer control gear comprises:
Two pressure solenoid valves;
Have two filler openings, multiple working hole and be the first logical valve of two-position valve, each in two filler openings of described first logical valve connects to corresponding in another the working hole in the working hole of in described two pressure solenoid valves and described two pressure solenoid valves respectively by oil duct;
Have multiple filler opening, multiple working hole and be the second logical valve of two-position valve, each in described multiple filler opening of described second logical valve connects to corresponding in all working mouth of described first logical valve respectively by oil duct;
Control the first control device of the position of the spool of described first logical valve;
Control the second control device of the position of the spool of described second logical valve;
Multiple synchronizer final controlling element, for activating described multiple synchronizer respectively, each in all working mouth of described second logical valve connects to corresponding in all hydraulic fluid ports of described multiple synchronizer final controlling element respectively by oil duct, control the acting in conjunction of the position of the position of the spool of described first logical valve and the spool of described second logical valve of described second control device control at described first control device under, the working hole of described two pressure solenoid valves alternatively communicates with two hydraulic fluid ports of synchronizer final controlling element described in one of them respectively;
Described hydraulic supply unit is connected respectively by the filler opening of oil duct with described two pressure solenoid valves.
Optionally, described speed changer is double-clutch speed changer, especially 6 fast double-clutch speed changers or 7 fast double-clutch speed changers.
Optionally, the quantity of described synchronizer final controlling element is four.
Optionally, described first control device is pressure opening and closing valve, and the filler opening of described first control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described first control device is connected by the control mouth of oil duct with described first logical valve.
Optionally, described second control device is pressure opening and closing valve, and the filler opening of described second control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described second control device is connected by the control mouth of oil duct with described second logical valve.
Optionally, the spring that described first logical valve has inner chamber, is positioned at the spool of inner chamber and is connected with one end of spool, described spool can move in the lumen under the control of described first control device between two limit positions.
Optionally, the spring that described second logical valve has inner chamber, is positioned at the spool of inner chamber and is connected with one end of spool, described spool can move in the lumen under the control of described second control device between two limit positions.
Optionally, each in described multiple synchronizer final controlling element is oil hydraulic cylinder, its have cylinder body and can in cylinder body reciprocating piston.
In accordance with a further aspect of the present invention, propose a kind of method of the multiple synchronizers utilized in hydraulic control system controlled variator as above, comprise the following steps:
First control device is utilized to control the position of the spool of the first logical valve, and utilize second control device to control the position of the spool of the second logical valve, alternatively communicate with two hydraulic fluid ports of a selected synchronizer final controlling element in described multiple synchronizer final controlling element respectively to make the working hole of described two pressure solenoid valves;
Utilize described two pressure solenoid valve control flow check to the hydraulic fluid pressure of two hydraulic fluid ports of described selected synchronizer final controlling element respectively, controlled the motion of the actuator in described selected synchronizer final controlling element by the relative size of the hydraulic fluid pressure controlling described two hydraulic fluid ports, and and then control the actuating of respective synchronization device;
Repeat above-mentioned steps, to realize the control of any one synchronizer in described multiple synchronizer as required.
Optionally, each in all working mouth of described second logical valve directly connects with corresponding in all hydraulic fluid ports of described multiple synchronizer final controlling element respectively by oil duct, the motion of the actuator thus under the cooperation of described first logical valve and described second logical valve directly in the described selected synchronizer final controlling element of control.
Optionally, the actuator in described selected synchronizer final controlling element is controlled as and can moves to desired location between two limit positions, and then enables described speed changer switch to required gear.
In addition, present invention also offers a kind of automobile, comprise the hydraulic control system described in above-mentioned any one.
Compared with prior art, technological scheme of the present invention has the following advantages:
In the hydraulic control system of the double-clutch speed changer of the present invention's proposition, by arranging the first pressure solenoid valve in clutch control device, first clutch final controlling element, second pressure solenoid valve, and second clutch final controlling element can realize the control to two clutches, by arranging the 3rd pressure solenoid valve in synchronizer control gear, 4th pressure solenoid valve, first logical valve, second logical valve, and multiple synchronizer final controlling element can realize the control of synchronizer, simplify the structure of hydraulic control system, reduce cost, and make control procedure more reliable, convenient.
In the hydraulic control system for the multiple synchronizers in controlled variator and controlling method of the present invention's proposition, just the direct control to multiple synchronizer can be realized reliably, easily by two pressure solenoid valves, the first logical valve, the second logical valve, first control device, second control device and multiple synchronizer final controlling element, and simplify hydraulic control system structure, reduce cost, and make control procedure more reliable, convenient.
In addition, clutch control device in hydraulic control system and synchronizer control gear are two independently devices, can control respectively, when vehicle operating is steady, 3rd pressure solenoid valve, the 4th pressure solenoid valve can be closed, synchronizer control gear cuts out, reduces the pressure loss in hydraulic control system, improve the utilization ratio of hydraulic oil.
Accompanying drawing explanation
Fig. 1 is the operating oil supplying device of the hydraulic control system of double-clutch speed changer in one embodiment of the present of invention and the structural representation of clutch control device;
Fig. 2 is the structural representation of the synchronizer control gear of the hydraulic control system of double-clutch speed changer in one embodiment of the present of invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage more become apparent, and are described in detail specific embodiments of the invention below in conjunction with accompanying drawing.
Shown in composition graphs 1 and Fig. 2, the hydraulic control system of the double-clutch speed changer of the present embodiment comprises clutch control device 100B, synchronizer control gear 200C and the operating oil supplying device 100A to clutch control device 100B and synchronizer control gear 200C fuel feeding.In the present embodiment, be for 6 fast double-clutch speed changers or 7 fast double-clutch speed changers.
Operating oil supplying device 100A comprises: for the fuel tank 101 of storage liquid force feed; Oil pump 104, entrance is connected with the oil duct 102 leading to fuel tank 101; Order about oil pump 104 to rotate and by the motor 105 of oil duct 102 from fuel tank 101 oil suction; By the pressure filter that oil duct 126 is connected with the outlet of oil pump 104, described pressure filter comprises and the filter core 107 connect and one-way valve 108, and the effect of described pressure filter is the impurity in filter oil road; The Decompression valves 106 be connected with oil duct 126, Decompression valves 106 plays the effect of safety valve, and when the pressure in oil duct 126 is excessive, hydraulic oil can release from Decompression valves 106; The one-way valve 109 be connected in series with described pressure filter; By the bypass valve 110 that oil duct 127 is connected with one-way valve 109; By the accumulator 111 that oil duct 128 is connected with bypass valve 110; With bypass valve 110 and the steel ball 125 connect, steel ball 125 directly flows to oil duct 128 for preventing the hydraulic oil in oil duct 127; The pressure transducer 112 be connected with oil duct 128, for detecting the oil pressure in operating oil supplying device 100A; The main oil gallery 113 be connected with oil duct 127, main oil gallery 113 is provided with five oil ducts, is respectively oil duct 113A, oil duct 113B, oil duct 113C, oil duct 113D, oil duct 113E.
When the pressure in oil duct 127 is less than the cracking pressure of bypass valve 110, oil pump 104 works always, and the hydraulic oil in oil duct 127 flows to oil duct 113A, oil duct 113B, oil duct 113C, oil duct 113D, oil duct 113E respectively via main oil gallery 113.
When the pressure in oil duct 127 is greater than the cracking pressure of bypass valve 110, bypass valve 110 is opened, and the hydraulic oil in oil duct 127 flows to oil duct 128 via bypass valve 110, and the hydraulic oil in oil duct 128 flows to accumulator 111, makes accumulator 111 pressurising.When the pressure of accumulator 111 reaches the preset pressure limit of operating oil supplying device 100A, oil pump 104 quits work, fuel feeding by accumulator 111, the hydraulic oil flowed out from accumulator 111 successively flows to oil duct 113A, oil duct 113B, oil duct 113C, oil duct 113D, oil duct 113E respectively via steel ball 125, oil duct 127, main oil gallery 113.
Therefore, by arranging bypass valve 110 and accumulator 111 in operating oil supplying device 100A, make oil pump 104 and accumulator 111 alternately to clutch control device 100B and synchronizer control gear 200C fuel feeding, and then can extend the working life of oil pump 104.
Clutch control device 100B comprises: the first pressure solenoid valve 115, and filler opening 115A is connected with operating oil supplying device 100A by oil duct 113A; First flow control valve 117, the filler opening 117A of first flow control valve 117 is connected with the first pressure solenoid valve working hole 115B by oil duct 116; By the first clutch final controlling element 119 that oil duct 118 is connected with first flow control valve working hole 117B.
First pressure solenoid valve 115 can control the pressure in oil duct 116, and has drain tap 115C.When first pressure solenoid valve 115 does not work, hydraulic oil can release from drain tap 115C.First flow control valve 117 can control the hydraulic fluid flow rate in oil duct 118, and has drain tap 117C.When first flow control valve 117 does not work, hydraulic oil can release from drain tap 117C.
Clutch control device 100B also comprises: the second pressure solenoid valve 120, and filler opening 120A is connected with operating oil supplying device 100A by oil duct 113B; Second control valve 122, the filler opening 122A of second control valve 122 is connected with the second pressure solenoid valve working hole 120B by oil duct 121; By the second clutch final controlling element 124 that oil duct 123 is connected with second control valve working hole 122B.
Second pressure solenoid valve 120 can control the pressure in oil duct 121, and has drain tap 120C.When second pressure solenoid valve 120 does not work, hydraulic oil can release from drain tap 120C.Second control valve 122 can control the hydraulic fluid flow rate in oil duct 123, and has drain tap 122C.When second control valve 122 does not work, hydraulic oil can release from drain tap 122C.
In first clutch final controlling element 119, second clutch final controlling element 124, Engage and disengage being used for controlling odd number clutch, another is used for controlling the Engage and disengage of even number clutch.In the present embodiment, for the Engage and disengage that first clutch final controlling element 119 controls the Engage and disengage of odd number clutch, second clutch final controlling element 124 controls even number clutch.
First clutch final controlling element 119, second clutch final controlling element 124 are oil hydraulic cylinder, this oil hydraulic cylinder have cylinder body (mark) and can in cylinder body reciprocating piston.The piston 119A outer end of first clutch final controlling element 119 is fixedly connected with spring 119B, and the piston 124A outer end of second clutch final controlling element 124 is fixedly connected with spring 124B.
When odd number clutch need be made to engage, first pressure controlled valve 115, first flow control valve 117 are all in running order, hydraulic oil in oil duct 113A successively flows in the cylinder body of first clutch final controlling element 119 via the first pressure controlled valve filler opening 115A, the first pressure controlled valve working hole 115B, oil duct 116, first flow control valve filler opening 117A, first flow control valve working hole 117B, oil duct 118, the piston 119A ordered about in cylinder body moves along a direction, to realize the joint of odd number clutch.In the moving process of piston 119A, spring 119B can be compressed.
When need make odd number clutch separation, first pressure controlled valve 115, first flow control valve 117 are all in off position, spring 119B recovers deformation, promote piston 119A to move along another contrary direction, and the hydraulic oil in cylinder body is released via oil duct 118, first flow control valve working hole 117B, first flow control valve drain tap 117C, to realize the separation of odd number clutch.
The principle controlling even number clutch Engage and disengage is the same with odd number clutch, does not repeat them here.
During double-clutch speed changer work, in odd number clutch, even number clutch, one is in jointing state, another is in separated state.
Synchronizer control gear 200C comprises: the 3rd pressure solenoid valve 228, and filler opening 228A is connected with operating oil supplying device 100A by oil duct 113C; 4th pressure solenoid valve 229, filler opening 229A is connected with operating oil supplying device 100A by oil duct 113D; First logical valve 230; Second logical valve 233; First control device 245; Second control device 246.
First logical valve 230 is two-position valve and has: inner chamber (mark); The spool 232 being positioned at inner chamber and the spring 231 be connected with spool 232 one end, spool 232 has limit on the left, limit on the right-right-hand limit two positions in inner chamber; Filler opening 230A, 230B of communicating with inner chamber, working hole 230C, 230D, 230E, 230F, drain tap 230G, 230H, 230I, and control mouth 230J.Wherein, filler opening 230A, 230B of the first logical valve 230 are connected with the working hole 228B of the 3rd pressure solenoid valve, the working hole 229B of the 4th pressure solenoid valve respectively by oil duct.
In the present embodiment, the first logical valve 230 is provided with three drain taps, in other embodiments, also can arrange the drain tap of other quantity.
Spool 232 position of the first logical valve 230 is controlled by first control device 245.In the present embodiment, first control device 245 is pressure opening and closing valve, and its filler opening (mark) is connected with operating oil supplying device 100A by oil duct 113E, oil outlet is connected with the control mouth 230J of the first logical valve 230 by oil duct 114A.When first control device 245 is opened, the hydraulic oil in oil duct 113E passes into the control mouth 230J of the first logical valve 230, makes spool 232 be positioned at limit on the left position and makes spring 231 be in compressive state; When first control device 245 is closed, spring 231 can recover deformation and order about spool 232 to be positioned at limit on the right-right-hand limit position.In other embodiments, first control device 245 also can control the device of spool 232 position for other.
Second logical valve 233 is two-position valve and has: inner chamber (mark); The spool 235 being positioned at inner chamber and the spring 234 be connected with spool 235 one end, spool 235 has limit on the left, limit on the right-right-hand limit two positions in inner chamber; Filler opening 233A, 233B, 233C, 233D of communicating with inner chamber, working hole 233E, 233F, 233G, 233H, 233I, 233J, 233K, 233L, drain tap 233M, 233N, 233O, 233P, 233Q, and control mouth 233R.Wherein, filler opening 233A, 233B, 233C, 233D of the second logical valve 233 are connected by oil duct working hole 230C, 230D, 230E, 230F with the first logical valve 230 successively.
In the present embodiment, the second logical valve 233 is provided with five drain taps, in other embodiments, also can arrange the drain tap of other quantity.
Spool 235 position of the second logical valve 233 is controlled by second control device 246.In the present embodiment, second control device 246 is pressure opening and closing valve, and its filler opening (mark) is connected with operating oil supplying device 100A by oil duct 113E, oil outlet is connected with the control mouth 233R of the second logical valve 233 by oil duct 114B.When second control device 246 is opened, the hydraulic oil in oil duct 113E passes into the control mouth 233R of the second logical valve 233, makes spool 235 be positioned at limit on the left position and makes spring 234 be in compressive state; When second control device 246 is closed, spring 234 can recover deformation and order about spool 235 to be positioned at limit on the right-right-hand limit position.In other embodiments, second control device 246 also can control the device of spool 235 position for other.
Synchronizer control gear 200C also comprises four synchronizer final controlling element, is respectively 238,240,242,244.Working hole 233E, 233F, 233G, 233H, 233I, 233J, 233K, 233L of second logical valve 233 are connected respectively by all hydraulic fluid ports of oil duct (mark) with synchronizer final controlling element 238,240,242,244.
When double-clutch speed changer is 6 fast double-clutch speed changer, synchronizer final controlling element 238,240,242,244 can be used for controlled variator and switch to 1 to 6 grade; When double-clutch speed changer is 7 fast double-clutch speed changer, synchronizer final controlling element 238,240,242,244 can be used for controlled variator and switch to 1 to 7 grade.
Synchronizer final controlling element 238,240,242,244 is oil hydraulic cylinder.Synchronizer final controlling element 238 have cylinder body 236A and can in cylinder body 236A reciprocating piston 237.Synchronizer final controlling element 240 have cylinder body 236B and can in cylinder body 236B reciprocating piston 239.Synchronizer final controlling element 242 have cylinder body 236C and can in cylinder body 236C reciprocating piston 241.Synchronizer final controlling element 242 have cylinder body 236D and can in cylinder body 236D reciprocating piston 243.
The working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 alternatively communicate respectively with two hydraulic fluid ports of one of them synchronizer final controlling element.In other words, in synchronizer final controlling element 238,240,242,244, only have two of a synchronizer final controlling element hydraulic fluid ports to communicate with the working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 respectively all the time.
Control by first control device 245 spool 235 position that spool 232 position of the first logical valve 230 and second control device 246 control the second logical valve 233, can select to be communicated with the working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 respectively by two hydraulic fluid ports of which synchronizer final controlling element:
Closing first control device 245 makes spool 232 be positioned at limit on the right-right-hand limit position, closing second control device 246 makes spool 235 be positioned at limit on the right-right-hand limit position, and two hydraulic fluid ports of synchronizer final controlling element 244 communicate (as shown in Figure 2) with the working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 respectively;
Closing first control device 245 makes spool 232 be positioned at limit on the right-right-hand limit position, opening second control device 246 makes spool 235 be positioned at limit on the left position, and two hydraulic fluid ports of synchronizer final controlling element 242 communicate with the working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 respectively;
Opening first control device 245 makes spool 232 be positioned at limit on the left position, closing second control device 246 makes spool 235 be positioned at limit on the right-right-hand limit position, and two hydraulic fluid ports of synchronizer final controlling element 240 communicate with the working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 respectively;
Opening first control device 245 makes spool 232 be positioned at limit on the left position, opening second control device 246 makes spool 235 be positioned at limit on the left position, and two hydraulic fluid ports of synchronizer final controlling element 238 communicate with the working hole 228B of the 3rd pressure solenoid valve 228, the working hole 229B of the 4th pressure solenoid valve 229 respectively.
Choose by two hydraulic fluid ports of which synchronizer final controlling element respectively with the working hole 228B of the 3rd pressure solenoid valve 228, after the working hole 229B of the 4th pressure solenoid valve 229 communicates, when the 3rd pressure solenoid valve 228 work and filler opening 228A and working hole 228B is connected and the 4th pressure solenoid valve 229 works and filler opening 229A and working hole 229B is connected time, hydraulic oil in oil duct 113C can flow to by one of them hydraulic fluid port of the synchronizer final controlling element selected via the 3rd pressure solenoid valve 228, hydraulic oil in oil duct 113D can flow to by another hydraulic fluid port of the synchronizer final controlling element selected via the 4th pressure solenoid valve 229.3rd pressure solenoid valve 228 can control flow check to by the hydraulic fluid pressure of one of them hydraulic fluid port of synchronizer final controlling element selected, 4th pressure solenoid valve 229 can control flow check to by the hydraulic fluid pressure of another hydraulic fluid port of synchronizer final controlling element selected, by controlling the relative size relation of two described hydraulic fluid pressures, can control to be moved to the left or right by the piston of the synchronizer final controlling element selected, and then enable double-clutch speed changer switch to required gear.
When the dual-clutch transmission of the present embodiment being switched to odd number shelves, before reality gearshift, hydraulic control system chooses the synchronizer final controlling element of employing in advance according to required speed ratio and carries out pre-hung shelves, when arriving the odd number shelves gearshift moment, hydraulic control system makes that first clutch final controlling element 119 engages, second clutch final controlling element 124 is separated, and makes speed changer switch to odd number shelves; When the dual-clutch transmission of the present embodiment being switched to even number shelves, before reality gearshift, hydraulic control system chooses the synchronizer final controlling element of employing in advance according to required speed ratio and carries out pre-hung shelves, when arriving the even number shelves gearshift moment, hydraulic control system makes that first clutch final controlling element 119 is separated, second clutch final controlling element 124 engages, and makes speed changer switch to even number shelves.
From the above, the technological scheme of the present embodiment has the following advantages:
The control to two clutches can be realized by the first pressure solenoid valve 115 in clutch control device 100B, first clutch final controlling element 119, second pressure solenoid valve 120, second clutch final controlling element 124, by arranging the 3rd pressure solenoid valve 228, the 4th pressure solenoid valve 229 in synchronizer control gear 200C, and first logical valve 230, second logical valve 233, synchronizer final controlling element can realize the control of synchronizer, simplify the structure of hydraulic control system, and make control procedure more reliable, convenient.In addition, the present invention employs solenoid valve (it is usually expensive) and the logical valve of minimum number in the control of synchronizer, thus greatly reduces cost.
In addition, clutch control device 100B in hydraulic control system and synchronizer control gear 200C is two independently devices, can control respectively, when vehicle operating is steady, 3rd pressure solenoid valve 228, the 4th pressure solenoid valve 229 can be closed, synchronizer control gear 200C is closed, reduces the pressure loss in hydraulic control system, improve the utilization ratio of hydraulic oil.
For clarity sake, situation when working independent of clutch control device 100B for synchronizer control gear 200C is below briefly described the separate control procedure of multiple synchronizer of the present invention and principle.
As previously mentioned, synchronizer control gear 200C comprises two pressure solenoid valves (i.e. the 3rd pressure solenoid valve 228 and the 4th pressure solenoid valve 229), first control device (pressure opening and closing valve) 245, second control device (pressure opening and closing valve) 246, first logical valve 230, second logical valve 233 and 4 synchronizer final controlling element 238,240,242,244.When 3rd pressure solenoid valve 228 works, filler opening 228A and working hole 228B connects; When 3rd pressure solenoid valve 228 is closed, drain tap 228C and filler opening 228A connects.The spool 232 of the first logical valve 230 has two working positions, when first control device 245 is closed, control mouth 230J place without high pressure oil, spool 232 is in limit on the right-right-hand limit position (as shown in Figure 2 position) under the thrust of spring 231, now filler opening 230A and working hole 230D connects, filler opening 230B and working hole 230F connects, and according to the difference of the state of second control device 246, high pressure oil is supplied to cylinder body 236C or 236D; When first control device 245 works, high pressure oil is supplied to and controls mouth 230J, spool 232 is promoted left, and overcome the spring force of spring 231 and arrive limit on the left position, now filler opening 230A and working hole 230C connects, filler opening 230B and working hole 230E connects, and according to the difference of the state of second control device 246, high pressure oil is supplied to cylinder body 236A or 236B.The spool 235 of the second logical valve 233 also has two working positions, when second control device 246 does not work, control mouth 233R place without high pressure oil, spool 235 is in limit on the right-right-hand limit position (as shown in Figure 2 position) under the thrust of spring 234, now filler opening 233A and working hole 233F connects, filler opening 233B and working hole 233H connects, filler opening 233C and working hole 233J connects, filler opening 233D and working hole 233L connects, according to the difference of the state of first control device 245, high pressure oil is supplied to cylinder body 236B or 236D; When second control device 246 works, high pressure oil is supplied to and controls mouth 233R, push spool 235 to left end, filler opening 233A and working hole 233E connects, filler opening 233B and working hole 233G connects, and filler opening 233C and working hole 233I connects, and filler opening 233D and working hole 233K connects, according to the difference of the state of first control device 245, high pressure oil is supplied to cylinder body 236A or 236C.First control device 245 and second control device 246 cooperating, implement to select corresponding synchronizer final controlling element to control.
According to above description, the present invention can implement to control to each synchronizer by the following method:
First control device is utilized to control the position of the spool of the first logical valve, and utilize second control device to control the position of the spool of the second logical valve, alternatively communicate with two hydraulic fluid ports of a selected synchronizer final controlling element in described multiple synchronizer final controlling element respectively to make the working hole of described two pressure solenoid valves (the 3rd pressure solenoid valve and the 4th pressure solenoid valve);
Utilize described two pressure solenoid valve control flow check to the hydraulic fluid pressure of two hydraulic fluid ports of described selected synchronizer final controlling element respectively, controlled the motion of the actuator (piston) in described selected synchronizer final controlling element by the relative size of the hydraulic fluid pressure controlling described two hydraulic fluid ports, and and then control the actuating of respective synchronization device;
Repeat above-mentioned steps, to realize the control of any one synchronizer in described multiple synchronizer as required.
In the state of fig. 2, working hole 228B is communicated with a hydraulic fluid port of synchronizer final controlling element 244, high pressure oil is supplied to the right side of piston 243, working hole 229B is communicated with another hydraulic fluid port of synchronizer final controlling element 244, high pressure oil is supplied to the left side of piston 243, the hydraulic fluid pressure of its working hole can be controlled according to the different current signals of the 3rd pressure solenoid valve 228 and the 4th pressure solenoid valve 229, thus realize the side-to-side movement of piston 243 and arrive desired location, and then speed changer is enable to switch to required gear.The control principle of other synchronizers in like manner.
Table 1 below shows the gearshift logical table that synchronizer of the present invention controls by way of example, and wherein A represents the hydraulic fluid pressure of the 3rd pressure solenoid valve 228, and B represents the hydraulic fluid pressure of the 3rd pressure solenoid valve 229.
Table 1
It should be noted that, although in the embodiment above, mainly illustrate for double-clutch speed changer as objective for implementation invention has been, obviously, the present invention is not limited thereto.Such as, the hydraulic control system for the multiple synchronizers in controlled variator especially, in the present invention and synchronizer control gear wherein can be applied in the speed changer of other type in mode that is independent or combination.
In the inventive solutions, in hydraulic control system synchronizer final controlling element quantity and should not be limited to the present embodiment, its concrete quantity should be determined according to the gearshift ability of double-clutch speed changer.
In addition, technological scheme of the present invention both went for dry dual clutch, went for wet dual clutch transmission again.
In addition, present invention also offers a kind of automobile, it comprises the hydraulic control system of above-mentioned double-clutch speed changer or the hydraulic control system for the multiple synchronizers in controlled variator.
Although the present invention discloses as above, the present invention is not defined in this.Any those skilled in the art, without departing from the spirit and scope of the present invention, all can make various changes or modifications, and therefore protection scope of the present invention should be as the criterion with claim limited range.
Claims (22)
1. a hydraulic control system for double-clutch speed changer, comprises clutch control device, synchronizer control gear and the operating oil supplying device to described clutch control device and synchronizer control gear fuel feeding, it is characterized in that:
Described clutch control device comprises: the first pressure solenoid valve, the second pressure solenoid valve, the first clutch final controlling element be connected with the working hole of described first pressure solenoid valve by oil duct and the second clutch final controlling element be connected with the working hole of described second pressure solenoid valve by oil duct;
Described synchronizer control gear comprises: the 3rd pressure solenoid valve, the 4th pressure solenoid valve;
Have two filler openings, multiple working hole and be the first logical valve of two-position valve, each in two filler openings of described first logical valve connects to corresponding in the working hole of described 3rd pressure solenoid valve and the working hole of described 4th pressure solenoid valve respectively by oil duct;
Have multiple filler opening, multiple working hole and be the second logical valve of two-position valve, each in described multiple filler opening of described second logical valve connects to corresponding in all working mouth of described first logical valve respectively by oil duct;
Control the first control device of the position of the spool of described first logical valve;
Control the second control device of the position of the spool of described second logical valve;
Multiple synchronizer final controlling element, each in all working mouth of described second logical valve connects to corresponding in all hydraulic fluid ports of described multiple synchronizer final controlling element respectively by oil duct, control the acting in conjunction of the position of the position of the spool of described first logical valve and the spool of described second logical valve of described second control device control at described first control device under, the working hole of described 3rd pressure solenoid valve, the working hole of described 4th pressure solenoid valve alternatively communicate with two hydraulic fluid ports of synchronizer final controlling element described in one of them respectively;
Described hydraulic supply unit is connected with the filler opening of the filler opening of the filler opening of described first pressure solenoid valve, described second pressure solenoid valve, described 3rd pressure solenoid valve, the filler opening of described 4th pressure solenoid valve by oil duct.
2. hydraulic control system as claimed in claim 1, it is characterized in that, described first control device is pressure opening and closing valve, the filler opening of described first control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described first control device is connected by the control mouth of oil duct with described first logical valve.
3. hydraulic control system as claimed in claim 1, it is characterized in that, described second control device is pressure opening and closing valve, the filler opening of described second control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described second control device is connected by the control mouth of oil duct with described second logical valve.
4. hydraulic control system as claimed in claim 1, it is characterized in that, described clutch control device also comprises: be serially connected in the first flow control valve between described first pressure solenoid valve and described first clutch final controlling element by oil duct.
5. hydraulic control system as claimed in claim 1, it is characterized in that, described clutch control device also comprises: be serially connected in the second control valve between described second pressure solenoid valve and described second clutch final controlling element by oil duct.
6. the hydraulic control system as described in any one of claim 1 to 5, is characterized in that, described double-clutch speed changer is 6 fast double-clutch speed changers or 7 fast double-clutch speed changers, and the quantity of described synchronizer final controlling element is four.
7. the hydraulic control system as described in any one of claim 1 to 5, it is characterized in that, described hydraulic supply unit props up oil duct by the difference on same main oil gallery and is connected with the filler opening of the filler opening of the filler opening of described first pressure solenoid valve, described second pressure solenoid valve, described 3rd pressure solenoid valve, the filler opening of described 4th pressure solenoid valve respectively.
8. the hydraulic control system as described in any one of claim 1 to 5, is characterized in that, described operating oil supplying device comprises:
For the fuel tank of storage liquid force feed;
Oil pump, its entrance is connected with the oil duct leading to described fuel tank;
Order about described oil pump to rotate and from the motor of described fuel tank oil suction;
By the bypass valve that oil duct is connected with described fuel pump outlet;
By the accumulator that oil duct is connected with described bypass valve.
9. the hydraulic control system as described in any one of claim 1 to 5, it is characterized in that, each in described first clutch final controlling element, described second clutch final controlling element and described multiple synchronizer final controlling element is oil hydraulic cylinder, described oil hydraulic cylinder have cylinder body and can in cylinder body reciprocating piston.
10., for a hydraulic control system for the multiple synchronizers in controlled variator, comprise synchronizer control gear and the operating oil supplying device to described synchronizer control gear fuel feeding, it is characterized in that, described synchronizer control gear comprises:
Two pressure solenoid valves;
Have two filler openings, multiple working hole and be the first logical valve of two-position valve, each in two filler openings of described first logical valve connects to corresponding in another the working hole in the working hole of in described two pressure solenoid valves and described two pressure solenoid valves respectively by oil duct;
Have multiple filler opening, multiple working hole and be the second logical valve of two-position valve, each in described multiple filler opening of described second logical valve connects to corresponding in all working mouth of described first logical valve respectively by oil duct;
Control the first control device of the position of the spool of described first logical valve;
Control the second control device of the position of the spool of described second logical valve;
Multiple synchronizer final controlling element, for activating described multiple synchronizer respectively, each in all working mouth of described second logical valve connects to corresponding in all hydraulic fluid ports of described multiple synchronizer final controlling element respectively by oil duct, control the acting in conjunction of the position of the position of the spool of described first logical valve and the spool of described second logical valve of described second control device control at described first control device under, the working hole of described two pressure solenoid valves alternatively communicates with two hydraulic fluid ports of synchronizer final controlling element described in one of them respectively;
Described hydraulic supply unit is connected respectively by the filler opening of oil duct with described two pressure solenoid valves.
11. hydraulic control systems as claimed in claim 10, it is characterized in that, described speed changer is double-clutch speed changer.
12. hydraulic control systems as claimed in claim 11, is characterized in that, described double-clutch speed changer is 6 fast double-clutch speed changers or 7 fast double-clutch speed changers.
13. hydraulic control systems as claimed in claim 10, is characterized in that, the quantity of described synchronizer final controlling element is four.
14. hydraulic control systems as claimed in claim 10, it is characterized in that, described first control device is pressure opening and closing valve, the filler opening of described first control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described first control device is connected by the control mouth of oil duct with described first logical valve.
15. hydraulic control systems as claimed in claim 10, it is characterized in that, described second control device is pressure opening and closing valve, the filler opening of described second control device is connected with described operating oil supplying device by oil duct, and the oil outlet of described second control device is connected by the control mouth of oil duct with described second logical valve.
16. hydraulic control systems as claimed in claim 10, it is characterized in that, the spring that described first logical valve has inner chamber, is positioned at the spool of inner chamber and is connected with one end of spool, described spool can move in the lumen under the control of described first control device between two limit positions.
17. hydraulic control systems as claimed in claim 10, it is characterized in that, the spring that described second logical valve has inner chamber, is positioned at the spool of inner chamber and is connected with one end of spool, described spool can move in the lumen under the control of described second control device between two limit positions.
18. hydraulic control systems as claimed in claim 10, is characterized in that, each in described multiple synchronizer final controlling element is oil hydraulic cylinder, described oil hydraulic cylinder have cylinder body and can in cylinder body reciprocating piston.
19. 1 kinds of methods utilizing the multiple synchronizers in hydraulic control system controlled variator according to any one of claim 10 to 18, is characterized in that, comprise the following steps:
First control device is utilized to control the position of the spool of the first logical valve, and utilize second control device to control the position of the spool of the second logical valve, alternatively communicate with two hydraulic fluid ports of a selected synchronizer final controlling element in described multiple synchronizer final controlling element respectively to make the working hole of described two pressure solenoid valves;
Utilize described two pressure solenoid valve control flow check to the hydraulic fluid pressure of two hydraulic fluid ports of described selected synchronizer final controlling element respectively, controlled the motion of the actuator in described selected synchronizer final controlling element by the relative size of the hydraulic fluid pressure controlling described two hydraulic fluid ports, and and then control the actuating of respective synchronization device;
Repeat above-mentioned steps, to realize the control of any one synchronizer in described multiple synchronizer as required.
20. methods as claimed in claim 19, it is characterized in that, each in all working mouth of described second logical valve directly connects with corresponding in all hydraulic fluid ports of described multiple synchronizer final controlling element respectively by oil duct, the motion of the actuator thus under the cooperation of described first logical valve and described second logical valve directly in the described selected synchronizer final controlling element of control.
21. methods as claimed in claim 19, is characterized in that, the actuator in described selected synchronizer final controlling element is controlled as and can moves to desired location between two limit positions, and then enables described speed changer switch to required gear.
22. 1 kinds of automobiles, is characterized in that, comprise the hydraulic control system according to any one of claim 1 to 18.
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| CN201410314954.XA CN105317997A (en) | 2014-07-03 | 2014-07-03 | Hydraulic control system and control method of transmission and automobile |
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| CN201410314954.XA CN105317997A (en) | 2014-07-03 | 2014-07-03 | Hydraulic control system and control method of transmission and automobile |
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Cited By (1)
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| CN112228551A (en) * | 2020-10-09 | 2021-01-15 | 中国第一汽车股份有限公司 | Vehicle gear shifting control method, device, equipment and storage medium |
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