CN101260933B - Hydraulic mechanical type automatic gear shifting system - Google Patents

Hydraulic mechanical type automatic gear shifting system Download PDF

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Publication number
CN101260933B
CN101260933B CN2008100506319A CN200810050631A CN101260933B CN 101260933 B CN101260933 B CN 101260933B CN 2008100506319 A CN2008100506319 A CN 2008100506319A CN 200810050631 A CN200810050631 A CN 200810050631A CN 101260933 B CN101260933 B CN 101260933B
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China
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gearshift
block selecting
solenoid valve
oil
mouth
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CN101260933A (en
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雷雨龙
盛培德
葛安林
胡廷辉
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Jilin University
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Jilin University
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Abstract

The invention discloses a hydraulic machine type automatic shift system, aiming to solve the problems of complicated planetary drive mechanism and high manufacture cost of AT and the problems of great difficulties of shift impact and launch control of AMT. The invention consists of a machine structure and an automatic control system, wherein the machine structure comprises a hydraulic torque convertor assembly (2), a wet type shift master clutch (3), a shift actuating mechanism assembly (5), a position selecting actuating mechanism assembly (7), a multiple positions parallel shaft type gear box (9) and a front box body (12). The machine structure is connected through a pump wheel cover (1) and a crank shaft (23), the output end of the machine structure is connected with the second shaft (48) of the multiple positions parallel shaft type gear box (9) and an automobile transmission shaft. The automatic control system comprises an electric control system and a hydraulic control system. The hydraulic control system comprises an internal meshing cycloid gear pump (11) providing pressure oil, action elements and control elements. The hydraulic machine type automatic shift system comprises four control circuits. The hydraulic machine type automatic shift system is more applicable to the automobiles such as large off-road vehicles.

Description

Hydraulic mechanical type automatic gear shifting system
Technical field
The present invention relates to a kind of hydraulic machine actuating unit that is applicable on the automobile, more particularly, what it related to is a kind of hydraulic mechanical type automatic gear shifting system.
Background technique
The process of the automotive trannsmission system automation that will be made up of clutch and parallel-axes gears gearbox is to continue the only way which must be passed of advantages such as this installation cost of performance is low, efficient is high, simple in structure, occurred various types of automatic transmission case such as AT, AMT, CVT, DCT on the market in succession, introduced respectively below:
One. hydraulic automatic speed variator (AT.Automatic Transmission)
Hydraulic automatic speed variator, its citation form are fluid torque converters and the connecting of rotation shaft type mechanical transmission.The major advantage of this hydraulic automatic speed variator has:
1. the automatic adaptability of fluid torque converter makes its stepless change with certain limit and bending moment ability, and external loading is had automatic adjusting and conformability, has fundamentally simplified manipulation.
2. hydraudynamic drive itself has certain damping property, can reduce the spike load and the torsional vibration of power train effectively, has prolonged the life-span of power train.
3. vehicle starting is steady, quickens rapid, even, soft.
4. riding comfort and driving safety have been improved.
5. the passing ability of vehicle is good.
AT is the leading products of vehicular automatic transmission at present.But the major defect of AT is that the efficient of high problem of epicyclic transmission mechanism complexity, the manufacture cost of AT and fluid torque converter is low.For the efficient with many retainingizations raising AT, each big motor corporation is all at exploitation 6 speed or the automatic speed-changing systems of multiple gear ratios more.
Two. electric control mechanical type automatic speed variator (AMT.Automated Manual Transmission)
Electric control mechanical type automatic speed variator is on the basis of original fixedly shaft type speed-changing gear box, the manipulation of block selecting, gearshift, clutch and engine throttle control automation.Compare with mechanical continuously-variable transmission with the hydraulic mechanical type automatic transmission, it has following advantage:
1. transmission efficiency height;
2. cost simple in structure is low;
3. production inheritance is with great difficulty made.
AMT is an important development direction of automatic Transmissions Technique, and AMT gains great popularity in the European market always.Owing to be subjected to the restriction of fuel economy and Abgasgesetz, each main automaker of Europe strengthened the research and development dynamics to AMT over the past two years in succession, and released the product of oneself successively.
Three. mechanical continuously-variable transmission (CVT.Continuously Variable Transmission)
Mechanical continuously-variable transmission has overcome the discontinuous and too much shortcoming of number of spare parts of the intrinsic gear ratio of preceding two kinds of automatic transmission.Because CVT is friction driving, cause efficient low, employed driving belt or chain manufacturing technology difficulty, requirement on machining accuracy are higher, the material of using requires higher, and maintenance is difficulty especially, in addition, because the engine torque that CVT can transmit is limited, relatively be fit to the little car of engine power.
Four. double-clutch automatic transmission (DCT.Double Clutch Transmission)
(adopted two clutches, two clutches link with two input shafts respectively double-clutch automatic transmission.Its main feature is in shift process, and the power of motor constantly is passed to wheel all the time, and such shift process is a power gear shifting.Vehicle has been realized power gear shifting, improves shifting comfort greatly, guarantees that also vehicle has good and economic simultaneously, and aspects such as vehicle oil consumption and discharging are made moderate progress.
Summary of the invention
Technical problem to be solved by this invention is for the shift impact of the epicyclic transmission mechanism complexity that overcomes AT, manufacture cost height and AMT, the problem that the Starting Control difficulty is big, and a kind of hydraulic mechanical type automatic gear shifting system is provided.Hydraulic mechanical type automatic gear shifting system not only has the smooth gear shifting of AT, the advantage that starting performance is good, also has the advantage that the AMT cost is low, be easy to make.
For solving the problems of the technologies described above, the present invention adopts following technological scheme to be achieved. and hydraulic mechanical type automatic gear shifting system is made up of mechanical structure and automatic control system.
Described mechanical structure includes assembly of hydraulic torque converter, wet type gearshift main clutch, gearshift actuating mechanism assembly, block selecting actuating mechanism assembly, many gears parallel-axis type gearbox, preceding casing and the lockup clutch of being made up of pump impeller lid and fluid torque converter.
The big wooden dipper terminal bolt of preceding casing is fixed on the casing of motor, the other end of preceding casing is bolted to the input end of the rear box of many gears parallel-axis type gearbox, bent axle, the pump impeller lid, turbine shaft, first with second respectively by means of bearing successively head and the tail plug-in mounting for being rotationally connected, the rotational axis conllinear of the rotational axis of each part and bent axle, the pump impeller lid is fixed on the land of bent axle (23) output terminal by drive plate, lockup clutch on pump impeller lid right side is sleeved on the turbine shaft and connects for spline, the right side of lockup clutch is equipped with fluid torque converter, fluid torque converter is to be sleeved on turbine shaft and the wheel stand, pump impeller in the fluid torque converter is connected with the right flank bolt of pump impeller lid Zhou Duan, on the left side of the wheel stand on fluid torque converter right side, the cycloid crescent gear pump is installed, wet type gearshift main clutch is installed on the right side of wheel stand, wet type gearshift main clutch is to be sleeved on turbine shaft and first, top bolt at the rear box of many gears parallel-axis type gearbox is equipped with the gearshift actuating mechanism assembly, bolt is equipped with the block selecting actuating mechanism assembly on the top of bonnet, and the output terminal of mechanical structure is flexibly connected by the output shaft and the truck drive shaft of many gears parallel-axis type gearbox.
Described automatic control system includes hydraulic control system.
Described hydraulic control system includes the cycloid crescent gear pump, executive component: fluid torque converter, lockup clutch oil cylinder, wet type gearshift main clutch are handled oil cylinder, block selecting oil cylinder, gearshift oil cylinder) and control unit.
This hydraulic control system includes four control loops:
Article one, the origin or beginning of control loop is the cycloid crescent gear pump (11) that pressure oil is provided for whole hydraulic control system, and terminal is mounted in fluid torque converter and the lockup clutch oil cylinder in the mechanical structure, is connected with pipeline with control unit between the two ends.
The origin or beginning of second control loop is the cycloid crescent gear pump that pressure oil is provided for whole hydraulic control system, the wet type gearshift main clutch that terminal is mounted in the wet type gearshift main clutch in the mechanical structure is handled oil cylinder, is connected with pipeline with control unit between the two ends.
Article three, the origin or beginning of control loop is the cycloid crescent gear pump that pressure oil is provided for whole hydraulic control system, and terminal is mounted in the block selecting oil cylinder in the block selecting actuating mechanism assembly in the mechanical structure, is connected with pipeline with control unit between the two ends.
Article four, the origin or beginning of control loop is the cycloid crescent gear pump that pressure oil is provided for whole hydraulic control system, and terminal is mounted in the gearshift oil cylinder in the gearshift actuating mechanism assembly in the mechanical structure, is connected with pipeline with control unit between the two ends.
Wet type described in technological scheme gearshift main clutch be sleeved on turbine shaft with first on be meant: the clutch housing splined hub that wet type is shifted gears in the main clutch is sleeved on oil distribution casing and the turbine shaft right-hand member, piston in the clutch housing is fixed on the splined hub of clutch housing by means of snap ring and belleville spring, left and right sides platen is installed in the inner spline groove of clutch housing by means of its peripheral spline, in the right side of clutch housing screw clutch cover is installed, driven disc is sleeved on first by splined hub.
In the top of rear box bolt the gearshift actuating mechanism assembly is installed described in the technological scheme, in the top of bonnet bolt the block selecting actuating mechanism assembly being installed is meant: the gearshift actuating mechanism assembly includes gearshift oil cylinder, gearshift actuator and the axle sleeve that is fixed on the declutch shift shaft, piston in the gearshift oil cylinder is connected gearshift actuator and axle sleeve sliding connection with the actuator's bolt of shifting gears.The block selecting actuating mechanism assembly includes block selecting oil cylinder, block selecting actuator and is installed in voussoir on the declutch shift shaft, and the piston in the block selecting oil cylinder is connected with block selecting actuator bolt, and the wedge slides of block selecting actuator and declutch shift shaft right-hand member is connected.The gearshift actuator motion track of gearshift actuating mechanism assembly and the rotational axis of declutch shift shaft coexist as in the vertical plane, and the block selecting actuator motion track of block selecting actuating mechanism assembly is that spatial vertical is intersected with the rotational axis of declutch shift shaft.
Article one control loop described in the technological scheme also includes one-way valve, pressure is regulated solenoid valve, pressure regulator valve, converter pressure relief valve, locking solenoid valve, water cooler and lubricating oil path.
One-way valve is connected in series with the cycloid crescent gear pump, the outlet of one-way valve regulates the P mouth of solenoid valve with pressure and the filler opening pipeline of pressure regulator valve is connected, the A mouth that pressure is regulated solenoid valve is connected with the control port pipeline of pressure regulator valve, the pressure regulator valve oil outlet is connected with converter pressure relief valve filler opening pipeline, the converter pressure relief valve oil outlet is connected in series with a throttle valve, the oil outlet of throttle valve is connected with the P mouth pipeline of locking solenoid valve, the A mouth of locking solenoid valve and B mouth respectively be installed in lockup clutch in the inlet opening of lockup clutch oil cylinder be connected with the inlet opening pipeline of fluid torque converter in being installed in mechanical structure, the delivery outlet pipeline of fluid torque converter connects water cooler and lubricating oil path import, and the water cooler outlet is connected with the oil sump pipeline.
Described second control loop also includes main clutch solenoid valve and buffer.
The oil outlet of pressure regulator valve is connected with the P mouth pipeline of main clutch solenoid valve, and the A mouth of main clutch solenoid valve is connected with the interface pipeline that the interface of buffer and wet type gearshift main clutch are handled oil cylinder, and the T mouth of main clutch solenoid valve is connected with the oil sump pipeline.
Described the 3rd control loop also includes No. 1 block selecting solenoid valve and No. 2 block selecting solenoid valves.
The P mouth of No. 1 block selecting solenoid valve and No. 2 block selecting solenoid valves is connected with the oil outlet pipeline of pressure regulator valve, the A mouth of No. 1 block selecting solenoid valve and No. 2 block selecting solenoid valves is connected with block selecting oil cylinder left and right sides oil inlet and outlet pipeline respectively, and the T mouth of No. 1 block selecting solenoid valve and No. 2 block selecting solenoid valves is connected with the oil sump pipeline.
Described the 4th control loop also includes No. 1 gearshift solenoid valve and No. 2 gearshift solenoid valves.
The P mouth of No. 1 gearshift solenoid valve and No. 2 gearshift solenoid valves is connected with the oil outlet pipeline of pressure regulator valve, the A mouth of No. 1 gearshift solenoid valve and No. 2 gearshift solenoid valves is connected with gearshift oil cylinder left and right sides oil inlet and outlet pipeline respectively, and the T mouth of No. 1 gearshift solenoid valve and No. 2 gearshift solenoid valves is connected with the oil sump pipeline.
Compared with prior art the invention has the beneficial effects as follows:
1. hydraulic mechanical type automatic gear shifting system has overcome the shortcoming on starting and shift quality of AMT well owing to adopted the fluid torque converter with flexible transmission and moment of torsion enlarging function, has improved starting performance and shift quality;
2. hydraulic mechanical type automatic gear shifting system has overcome the low and poor shortcoming of fuel economy of AT efficient well in the method for the converter lockout of road conditions and top gear use preferably;
3. ECU (Electrical Control Unit) is sent instruction to the respective electrical magnet valve in real time according to sensor information in the hydraulic mechanical type automatic gear shifting system, realizes block selecting, gearshift action by the accurate control to main clutch solenoid valve, block selecting solenoid valve and gearshift solenoid valve;
4. hydraulic mechanical type automatic gear shifting system adopts many gears parallel-axis type gearbox, has avoided the shortcoming of planetary pinion technology capability difference.Therefore, hydraulic mechanical type automatic gear shifting system has that technology capability is good, speed of response is fast and the high advantage of control accuracy, and hydraulic mechanical type automatic gear shifting system is more suitable in the automobile of types such as large-scale go-anywhere vehicle.
Description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing:
Fig. 1 is the whole-cutaway view on the hydraulic mechanical type automatic gear shifting system general structure plan view;
Fig. 2 is the whole-cutaway view of preceding casing assembly structure on plan view in the hydraulic mechanical type automatic gear shifting system;
Fig. 3 is the whole-cutaway view on the wet type gearshift main clutch general structure plan view in the hydraulic mechanical type automatic gear shifting system;
Fig. 4 is the many gears parallel-axis type transmission assembly and gearshift actuating mechanism assembly and the sectional view of block selecting actuating mechanism assembly structural relation on plan view in the hydraulic mechanical type automatic gear shifting system;
Fig. 5 is the hydraulic transmission principle figure of the hydraulic control system in the hydraulic mechanical type automatic gear shifting system;
Fig. 6 is hydraulic control system in the hydraulic mechanical type automatic gear shifting system and electric control system--a liquid transmission schematic block diagram;
Among the figure: 1. pump impeller lid, 2. assembly of hydraulic torque converter, 3 wet types gearshift main clutch, 4. solenoid valve, 5. gearshift actuating mechanism assembly, 6. rear box, 7. block selecting actuating mechanism assembly, 8. bonnet, 9. more than gear parallel-axis type gearbox, 10. hydraulic control valve plate, 11. cycloid crescent gear pumps, casings before 12., 13. clutch housing, 14. pistons, 15. platens, 16. clutch cover, 17. driven discs, 18. splined hub, 19. screw, 20. snap rings, 21. belleville springs, 22. oil duct, 23. bent axles, 24. drive plates, 25. lockup clutch, 26. turbines, 27. guide wheels, 28. pump impeller, No. 1 input of 29. Gerotor pumps gear, 30. screws, 31. turbine shaft, 32. deep groove ball bearings, 33. axle sleeves, 34. deep groove ball bearing, 35. deep groove ball bearings, No. 2 inputs of 36. Gerotor pumps gear, 37. oil baffle disc, 38. wheel stands, 39. needle bearings, 40. stud, 41. start gear ring, 42. screws, 43. deep groove ball bearing, 44. first, 45. screws, 46. needle bearing, 47. gearshift actuators, 48. second, 49. declutch shift shaft, 50. deep groove ball bearings, 51. block selecting actuators, 52. flange, 53. tapered roller bearings, 54. jack shafts, 55. tapered roller bearing, 56. screws, 57. stud, 58. deep groove ball bearing, 59. oil distribution casing, 60. lands, LB. lockup clutch oil cylinder, LZ. wet type gearshift main clutch is handled oil cylinder, GX. block selecting oil cylinder, the GH. oil cylinder of shifting gears, the Q. fluid torque converter, E. pressure is regulated solenoid valve, A1. locking solenoid valve, D. main clutch solenoid valve, B1.1 block selecting solenoid valve, B2.2 block selecting solenoid valve, C1.1 gearshift solenoid valve, C2.2 gearshift solenoid valve, G. converter pressure relief valve, H. pressure regulator valve, X. one-way valve, K. throttle valve, I. buffer, F. water cooler, the J. lubricating oil path.
Embodiment
Below in conjunction with accompanying drawing the present invention is explained in detail:
Consult Fig. 1 to Fig. 4, hydraulic mechanical type automatic gear shifting system is made up of mechanical structure and automatic control system two large divisions.
Described mechanical structure partly includes component such as assembly of hydraulic torque converter 2, wet type gearshift main clutch 3, gearshift actuating mechanism assembly 5, block selecting actuating mechanism assembly 7, many gears parallel-axis type gearbox 9, preceding casing 12 and lockup clutch 25.
Assembly of hydraulic torque converter 2 is made up of with fluid torque converter Q pump impeller lid 1.Preceding casing 12 is all-in-one-piece casing spares, component such as pump impeller lid 1, fluid torque converter Q, wet type gearshift main clutch 3, cycloid crescent gear pump 11 and lockup clutch 25 all are installed in its inside, integrated degree height, casing assembly before becoming, the oil duct that also is processed with numerous and complicated on the preceding casing 12 has replaced independent pipeline to connect.Before the big wooden dipper end of casing 12 be fixed by bolts on the casing that engine crankshaft 23 stretches out the place, the other end (the right side of right-hand member of preceding casing 12, right-hand member herein, right side and the word that will mention expression orientation such as right side, right flank, left end, left side later on all are as the criterion with each component represented mounting point in Fig. 1 of Figure of description) be fixed by bolts on the left side of input port of many gears parallel-axis type gearbox 9 rear box 6, the bottom of many gears parallel-axis type gearbox 9 rear box 6 is fixed on the automotive frame.Engine crankshaft 23 output terminals, pump impeller lid 1, turbine shaft 31, first 44 (is that bent axle 23 output terminals cover between 1 by land 60 and the pump impeller that screw 42 is connected with second 48, between pump impeller lid 1 and the turbine shaft 31, between turbine shaft 31 and first 44 and first 44 and second 48) respectively by means of deep groove ball bearing 43, needle bearing 39, deep groove ball bearing 32 and needle bearing 46 head and the tail plug-in mounting successively are for being rotationally connected, the rotational axis conllinear of the rotational axis of each part and bent axle 23, wherein adopt for first 44 deep groove ball bearing 58 to be installed in the axis hole of rear box 6 left end box body walls, in the axis hole that is installed in rear box 6 right-hand member box body walls by means of deep groove ball bearing 50 for second 48.The Zhou Duan of pump impeller lid 1 is fixedlyed connected with drive plate 24 by screw 42, the center-side of drive plate 24 is fixed on the end face of bent axle 23 by screw and land, be sleeved at the right side lockup clutch 25 of pump impeller lid 1 and be the spline connection on the turbine shaft 31, the right side of lockup clutch 25 is equipped with fluid torque converter Q, fluid torque converter Q is sleeved on turbine shaft 31 and the wheel stand 38, more particularly, turbine 26 among the fluid torque converter Q is sleeved on and adopts spline to connect on the turbine shaft 31, if turbine 26 rotates, turbine shaft 31 is in company with rotating together; Guide wheel 27 among the fluid torque converter Q and pump impeller 28 are to be sleeved on that (wheel stand 38 is to be sleeved on the turbine shaft 31 by an axle sleeve 33 on the wheel stand 38, turbine shaft 31 is rotationally connected in axle sleeve 33 movingly) become to be rotationally connected, if pump impeller 28 rotates, can not drive turbine shaft 31 and rotate and can only on wheel stand 38, rotate.Pump impeller 28 among the fluid torque converter Q is connected with the right flank bolt of 1 week of pump impeller lid end, and engine crankshaft 23 rotates in other words, and pump impeller 28 rotates with pump impeller lid 1.On the left side of the wheel stand 38 on assembly of hydraulic torque converter 2 right sides, cycloid crescent gear pump 11 is installed, No. 1 input of Gerotor pump gear 29 is contained on the wheel stand 38 by means of bearing housing, its left side is connected with pump impeller 28 keys, be that pump impeller 28 rotates, No. 1 input of Gerotor pump gear 29 rotates simultaneously, No. 1 input of Gerotor pump gear 29 is imported gear 36 for No. 2 with the Gerotor pump on being installed in cycloid crescent gear pump 11 and is meshed, and engine crankshaft 23 is whole hydraulic system fuel feeding once rotating cycloid crescent gear pump 11.Oil distribution casing 59 and wet type gearshift main clutch 3 are installed on the right side of wheel stand 38, wet type gearshift main clutch 3 is to be sleeved on oil distribution casing 59, turbine shaft 31 and first 44, be the splined hub of the clutch housing 13 in the wet type gearshift main clutch 3 be sleeved on oil distribution casing (with the splined hub place of the equipped clutch housing 13 of oil distribution casing are movingly smooth holes) and turbine shaft 31 be processed with the right-hand member of spline, the splined hub 18 that is riveted together with driven disc 17 is sleeved on first 44.Piston 14 in the clutch housing 13 is fixed on clutch housing 13 splined hub by means of snap ring 20 and belleville spring 21, the left end of piston 14 moves right after oil duct 22 advances pressure oil, after the left end oil extraction of piston 14, piston 14 resets under the effect of belleville spring 21, left and right sides platen 15 is installed in the inner spline groove of clutch housing 13 by means of its peripheral spline, in the right side of clutch housing 13 screw clutch cover 16 is installed, is prevented that the left and right sides platen 15 from axially moving right in clutch housing 13.Top bolt at many gears parallel-axis type gearbox 9 rear box 6 is equipped with gearshift actuating mechanism assembly 5, and gearshift actuating mechanism assembly 5 includes gearshift oil cylinder GH, gearshift actuator 47 and the axle sleeve that is fixed on the declutch shift shaft 49.Piston among the gearshift oil cylinder GH is connected with actuator's 47 bolt of shifting gears, and gearshift actuator 47 is slidingly connected with the circular groove that is fixed on the axle sleeve on the declutch shift shaft 49, is fixed with the three cover shift forks that are slidingly connected with synchronizer on the declutch shift shaft 49.Gearshift actuator 47 motion tracks (also being the motion track of piston among the gearshift oil cylinder GH) coexist as in the vertical plane with the rotational axis of declutch shift shaft 49.Piston move left and right among the gearshift oil cylinder GH makes gearshift actuator 47 move left and right, gearshift actuator 47 move left and right make and declutch shift shaft 49 move left and right moves the purpose that reaches gearshift thereby drive shift fork.Bolt is equipped with block selecting actuating mechanism assembly 7 on the top of bonnet 8, and block selecting actuating mechanism assembly 7 includes block selecting oil cylinder GX, block selecting actuator 51 and the voussoir that is installed on the declutch shift shaft 49.Piston among the block selecting oil cylinder GX is connected with block selecting actuator 51 bolt, and block selecting actuator 51 is connected with the wedge slides that is fixed on declutch shift shaft 49 right-hand members.The motion track of piston is that spatial vertical is intersected with the rotational axis of declutch shift shaft 49 among the block selecting oil cylinder GX.If the piston among the gearshift oil cylinder GH is a move left and right, piston among the block selecting oil cylinder GX is for moving forward and backward so, if the piston among the block selecting oil cylinder GX moves forward and backward, drive declutch shift shafts 49 forward or the angle that rotates backward by block selecting actuator 51, so just can make certain shift fork that is fixed in the cover of three on the declutch shift shaft 49 shift fork in running order, when declutch shift shaft 49 moved, in running order shift fork was thrown off or engagement its pairing gear train.The output terminal of mechanical structure by the output shaft of many gears parallel-axis type gearbox 9 promptly second 48 output terminal be connected with truck drive shaft activity (universal joint).
Consult Fig. 5 and Fig. 6, described automatic control system is made up of hydraulic control system and automatical control system.
Described hydraulic control system includes cycloid crescent gear pump 11, executive component: fluid torque converter Q, lockup clutch oil cylinder LB, wet type gearshift main clutch are handled oil cylinder LZ, block selecting oil cylinder GX and gearshift oil cylinder GH and control unit: pressure is regulated solenoid valve E, locking solenoid valve A1, main clutch solenoid valve D, No. 1 block selecting solenoid valve B1, No. 2 block selecting solenoid valve B2, No. 1 gearshift solenoid valve C1, No. 2 gearshift solenoid valve C2, converter pressure relief valve G, pressure regulator valve H, one-way valve X, throttle valve K, buffer I, water cooler F and lubricating oil path J.
Form four control loops altogether for whole hydraulic control system provides cycloid crescent gear pump 11, executive component and the control unit of pressure oil, existing division is as follows:
Article one, the origin or beginning of control loop is the cycloid crescent gear pump 11 that pressure oil is provided for whole hydraulic control system, terminal is mounted in fluid torque converter Q and the lockup clutch oil cylinder LB in the mechanical structure, the control unit that adopts between the two ends has one-way valve X, pressure to regulate solenoid valve E, pressure regulator valve H, converter pressure relief valve G and locking solenoid valve A1, adds water cooler F and lubricating oil path J.
One-way valve X adopts pipeline to be connected in series with cycloid crescent gear pump 11, the outlet of one-way valve X regulates the P mouth of solenoid valve E with pressure and the filler opening pipeline of pressure regulator valve H is connected, the A mouth that pressure is regulated solenoid valve E is connected with the control port pipeline of pressure regulator valve H, pressure regulator valve H oil outlet is connected with converter pressure relief valve G filler opening pipeline, converter pressure relief valve G oil outlet adopts pipeline to be connected in series with a throttle valve K, the oil outlet of throttle valve K is connected with the P mouth pipeline of locking solenoid valve A1, the A mouth of locking solenoid valve A1 and B mouth respectively be installed in lockup clutch in the inlet opening of lockup clutch oil cylinder LB be connected with the inlet opening pipeline of fluid torque converter Q in being installed in mechanical structure, the delivery outlet pipeline of fluid torque converter Q connects water cooler F and lubricating oil path J import, and water cooler F outlet is connected with the oil sump pipeline.
The origin or beginning of second control loop is the cycloid crescent gear pump 11 that pressure oil is provided for whole hydraulic control system, the wet type gearshift main clutch that terminal is mounted in the wet type gearshift main clutch 3 in the mechanical structure is handled oil cylinder LZ, the control unit that adopts between the two ends has main clutch solenoid valve D, adds buffer I.
The P mouth of main clutch solenoid valve D is connected with the oil outlet pipeline of pressure regulator valve H, the A mouth of main clutch solenoid valve D is connected with the interface pipeline that the interface of buffer I and wet type gearshift main clutch are handled oil cylinder LZ, and the T mouth of main clutch solenoid valve D is connected with the oil sump pipeline.
Article three, the origin or beginning of control loop is the cycloid crescent gear pump 11 that pressure oil is provided for whole hydraulic control system, terminal is the block selecting oil cylinder GX in the block selecting actuating mechanism assembly 7 in the mechanical structure, and the control unit that adopts between the two ends has No. 1 block selecting solenoid valve B1 and No. 2 block selecting solenoid valve B2.
The P mouth of No. 1 block selecting solenoid valve B1 and No. 2 block selecting solenoid valve B2 is connected with the oil outlet pipeline of pressure regulator valve H, the A mouth of No. 1 block selecting solenoid valve B1 and No. 2 block selecting solenoid valve B2 is connected with block selecting oil cylinder GX left and right sides oil inlet and outlet pipeline respectively, and the T mouth of No. 1 block selecting solenoid valve B1 and No. 2 block selecting solenoid valve B2 is connected with the oil sump pipeline.
Article four, the origin or beginning of control loop is the cycloid crescent gear pump 11 that pressure oil is provided for whole hydraulic control system, terminal is the gearshift oil cylinder GH in the gearshift actuating mechanism assembly 5 in the mechanical structure, and the control unit that adopts between the two ends has No. 1 gearshift solenoid valve C1 and No. 2 gearshift solenoid valve C2.
The P mouth of No. 1 gearshift solenoid valve C1 and No. 2 gearshift solenoid valve C2 is connected with the oil outlet pipeline of pressure regulator valve H, the A mouth of No. 1 gearshift solenoid valve C1 and No. 2 gearshift solenoid valve C2 is connected with gearshift oil cylinder GH left and right sides oil inlet and outlet pipeline respectively, and the T mouth of No. 1 gearshift solenoid valve C1 and No. 2 gearshift solenoid valve C2 is connected with the oil sump pipeline.
Described automatical control system includes the ECU (Electrical Control Unit) TCU that embeds self-editing computer program, include engine rotation speed sensor, the Engine torque sensor, accelerator open degree sensor, accelerator pedal sensor, the shift signal sensor, turbine speed sensor, the clutch pressure sensor, the transfer input shaft speed sensors, vehicle speed sensor, the block selecting position transducer, signal extraction elements such as drive range sensor and temperature transducer, the included pressure of hydraulic control system is regulated solenoid valve E, locking solenoid valve A1, main clutch solenoid valve D, block selecting solenoid valve B1, block selecting solenoid valve B2, gearshift solenoid valve C1 and gearshift solenoid valve C2 form.Input interface on the ECU (Electrical Control Unit) TCU is connected with Displaying Meter, all kinds of solenoid valve with above-mentioned various kinds of sensors, all kinds of switch respectively with output interface, can form a complete automatical control system.
The working principle of hydraulic mechanical type automatic gear shifting system:
In the course of the work, the automatic transmission fluid (ATF) that the pressure that is provided by cycloid crescent gear pump 11 is 1.5MPa is provided fluid torque converter Q, it accepts the power by motor output, make 3 combinations of wet type gearshift main clutch by automatic control system, the jack shaft 54 of transmission of power to many gears parallel-axis type gearbox 9, according to block selecting actuating mechanism assembly 7, the selected gear of gearshift actuating mechanism assembly 5, be transmission of power that output shaft is exported to second 48 of many gears parallel-axis type gearbox 9.
In shift process, automatic control system makes wet type gearshift main clutch 3 separate, and cuts off power transmission, and the speed of a motor vehicle and two parameters of accelerator open degree that automatic control system is extracted according to sensor are determined the gear that needs.ECU (Electrical Control Unit) TCU gear as required, the logical action between control block selecting solenoid valve B1, block selecting solenoid valve B2, gearshift solenoid valve C1, the gearshift solenoid valve C2 is impelled block selecting oil cylinder GX, gearshift oil cylinder GH corresponding actions and is selected gear.Automatic control system makes and 3 combinations of wet type gearshift main clutch makes vehicle according to new selected gear operation behind the selected gear.In block selecting and gear shift control process, fluid torque converter is in released state, mainly is the control of wet type gearshift main clutch being handled oil cylinder LZ, block selecting oil cylinder GX and gearshift oil cylinder GH, carefully states as follows again:
1. wet type gearshift main clutch 3 separating controlling processes
ECU (Electrical Control Unit) TCU is according to the runnability of vehicle, the valve core movement of control main clutch solenoid valve D, when the right position connection of main clutch solenoid valve D is A mouth and the connection of T mouth, the hydraulic oil that wet type gearshift main clutch is handled among the oil cylinder LZ is let out oil sump tank through the T mouth of main clutch solenoid valve D, and wet type gearshift this moment main clutch 3 separates.
2. wet type gearshift main clutch 3 is in conjunction with control procedure
The valve core movement of ECU (Electrical Control Unit) TCU control main clutch solenoid valve D, the position, a left side of main clutch solenoid valve D is connected when being P mouth and the connection of A mouth, hydraulic oil in the oil sump enters cycloid crescent gear pump 11 through filter, A mouth through main clutch solenoid valve D is handled the pressure oil that oil cylinder LZ provides 1.5MPa for wet type gearshift main clutch, clutch combination this moment, it is output shaft output that the power of motor is passed to second 48 of many gears parallel-axis type gearbox 9.
3. block selecting cylinder (back) motion control process to the right
The action of ECU (Electrical Control Unit) TCU control block selecting solenoid valve B1 and block selecting solenoid valve B2, when P mouth and the A mouth of block selecting solenoid valve B1 are connected (block selecting solenoid valve B1 is operated in position, a left side), when the A mouth of block selecting solenoid valve B2 and T mouth are connected (block selecting solenoid valve B2 is operated in right position), hydraulic oil in the oil sump enters cycloid crescent gear pump 11 through filter, regulate pressure after the P mouth of block selecting solenoid valve B1 and A mouth are the hydraulic oil of 1.5Mpa for the left end of block selecting oil cylinder GX provides pressure through pressure regulator valve H, the hydraulic oil of the right-hand member of block selecting oil cylinder GX is by A mouth and the T mouth draining of block selecting solenoid valve B2, and piston rod is (back) motion to the right.
4. block selecting oil cylinder (preceding) motion control process left
The action of ECU (Electrical Control Unit) TCU control block selecting solenoid valve B1 and block selecting solenoid valve B2, when A mouth and the T mouth of block selecting solenoid valve B1 are connected (block selecting solenoid valve B1 is operated in right position), the P mouth of block selecting solenoid valve B2 and A mouth are connected (block selecting solenoid valve B2 is operated in position, a left side), it is the hydraulic oil of 1.5Mpa that the right-hand member of block selecting oil cylinder GX provides pressure by the P mouth of block selecting solenoid valve B2 and A mouth, the hydraulic oil of the left end of block selecting oil cylinder GX is by A mouth and the T mouth draining of block selecting solenoid valve B1, and piston rod is (preceding) motion left.
5. the gearshift oil cylinder moves right control procedure
The action of ECU (Electrical Control Unit) TCU control gearshift solenoid valve C1 and gearshift solenoid valve C2, when P mouth and the A mouth of gearshift solenoid valve C1 are connected (gearshift solenoid valve C1 is operated in position, a left side), A mouth and the T mouth of gearshift solenoid valve C2 connected (gearshift solenoid valve C2 is operated in right position), hydraulic oil in the oil sump enters cycloid crescent gear pump 11 through filter, through pressure regulator valve H is the hydraulic oil of 1.5Mpa through the P mouth of gearshift solenoid valve C1 and A mouth for the left end of the oil cylinder GH that shifts gears provides pressure again, the right-hand member of gearshift oil cylinder GH is by A mouth and the T mouth draining of gearshift solenoid valve C2, and the basic bar of living moves right.
6. gearshift oil cylinder motion control process left
The action of ECU (Electrical Control Unit) TCU control gearshift solenoid valve C1 and gearshift solenoid valve C2, when A mouth and the T mouth of gearshift solenoid valve C1 are connected (gearshift solenoid valve C1 is operated in right position), P mouth and the A mouth of gearshift solenoid valve C2 connected (gearshift solenoid valve C2 is operated in position, a left side), it is the hydraulic oil of 1.5Mpa that the right-hand member of gearshift oil cylinder GH provides pressure by the P mouth of gearshift solenoid valve C2 and A mouth, the hydraulic oil of the left end of gearshift oil cylinder GH is by A mouth and the T mouth draining of gearshift solenoid valve C1, and piston rod is to left movement.
ECU (Electrical Control Unit) TCU can realize the locking and the release of lockup clutch by the working position of control locking solenoid valve A1 spool.
Vehicle is when bottom gear travels or be in shift process, (locking solenoid valve A1 is operated in position, a left side) connected on the left side of locking solenoid valve A1, when being the connection of P mouth and A mouth, hydraulic oil in the oil sump enters cycloid crescent gear pump 11 through filter, after regulating pressure, pressure regulator valve H enters converter pressure relief valve G, P mouth and A mouth through locking solenoid valve A1, the pressure oil of 1.5MPa is provided for fluid torque converter Q through lockup clutch 25 again, simultaneously, the pressure oil among the fluid torque converter Q flows back to fuel tank at drain tap behind water cooler F.So just give full play to the advantage of the flexible transfer motion power of torque-converters, effectively improved the rideability of vehicle.
Vehicle travels under the situation of better road conditions at top gear, when the speed of a motor vehicle reaches certain numerical value, the action of ECU (Electrical Control Unit) TCU control locking solenoid valve A1, make locking solenoid valve A1 the right connect, when being the connection of P mouth and B mouth, hydraulic oil in the oil sump enters cycloid crescent gear pump 11 through filter, after regulating pressure, pressure regulator valve H enters converter pressure relief valve G, provide the pressure oil of 1.5MPa through the P mouth of locking solenoid valve A1 and B mouth for fluid torque converter Q again, this moment, the pressure oil of 1.5MPa made lockup clutch 25 lockings.Simultaneously, the pressure oil among the fluid torque converter Q flows back to fuel tank at drain tap behind water cooler F.
The locking of lockup clutch 25 has improved the efficient of transmission system greatly, has solved the lower shortcoming of fluid torque converter Q efficient.Thereby the hydraulic mechanical type automatic gear shifting system that makes us design not only can utilize flexible transmission of torque-converters and moment of torsion enlarging function, improve starting, gear shift control quality, improve road-ability, Security and passing ability, have simultaneously electrical control automatic manual transmission case cost low, be easy to advantage such as manufacturing.

Claims (4)

1. a hydraulic mechanical type automatic gear shifting system is characterized in that, hydraulic mechanical type automatic gear shifting system is made up of mechanical structure and automatic control system;
Described mechanical structure includes assembly of hydraulic torque converter (2), wet type gearshift main clutch (3), gearshift actuating mechanism assembly (5), block selecting actuating mechanism assembly (7), many gears parallel-axis type gearbox (9), preceding casing (12) and the lockup clutch of being made up of pump impeller lid (1) and fluid torque converter (Q) (25);
The big wooden dipper terminal bolt of preceding casing (12) is fixed on the casing of motor, the other end of preceding casing (12) is bolted to the input end of the rear box (6) of many gears parallel-axis type gearbox (9), bent axle (23), pump impeller lid (1), turbine shaft (31), first (44) and second (48) respectively by means of bearing head and the tail plug-in mounting successively for being rotationally connected, the rotational axis conllinear of the rotational axis of each part and bent axle (23), pump impeller lid (1) is fixed on the land (60) of bent axle (23) output terminal by drive plate (24), it upward is that spline connects that lockup clutch (25) on pump impeller lid (1) right side is sleeved on turbine shaft (31), the right side of lockup clutch (25) is equipped with fluid torque converter (Q), fluid torque converter (Q) is to be sleeved on turbine shaft (31) and the wheel stand (38), pump impeller (28) in the fluid torque converter (Q) is connected with the right flank bolt of pump impeller lid (1) Zhou Duan, on the left side of the wheel stand (38) on fluid torque converter (Q) right side, cycloid crescent gear pump (11) is installed, wet type gearshift main clutch (3) is installed on the right side of wheel stand (38), wet type gearshift main clutch (3) is to be sleeved on turbine shaft (31) and first (44), top bolt at the rear box (6) of many gears parallel-axis type gearbox (9) is equipped with gearshift actuating mechanism assembly (5), top bolt at bonnet (8) is equipped with block selecting actuating mechanism assembly (7), and the output terminal of mechanical structure is flexibly connected by the output shaft and the truck drive shaft of many gears parallel-axis type gearbox (9);
Described automatic control system includes hydraulic control system;
Described hydraulic control system includes cycloid crescent gear pump (11), and the executive component of this hydraulic control system is: described fluid torque converter (Q), lockup clutch oil cylinder (LB), wet type gearshift main clutch are handled oil cylinder (LZ), block selecting oil cylinder (GX), gearshift oil cylinder (GH) and control unit;
This hydraulic control system includes four control loops:
Article one, the origin or beginning of control loop is the cycloid crescent gear pump (11) that pressure oil is provided for whole hydraulic control system, terminal is mounted in the fluid torque converter (Q) and lockup clutch oil cylinder (LB) in the mechanical structure, is connected with pipeline with control unit between the two ends;
The origin or beginning of second control loop is the cycloid crescent gear pump (11) that pressure oil is provided for whole hydraulic control system, the wet type gearshift main clutch that terminal is mounted in the wet type gearshift main clutch (3) in the mechanical structure is handled oil cylinder (LZ), is connected with pipeline with control unit between the two ends;
Article three, the origin or beginning of control loop is the cycloid crescent gear pump (11) that pressure oil is provided for whole hydraulic control system, terminal is mounted in the block selecting oil cylinder (GX) in the block selecting actuating mechanism assembly (7) in the mechanical structure, is connected with pipeline with control unit between the two ends;
Article four, the origin or beginning of control loop is the cycloid crescent gear pump (11) that pressure oil is provided for whole hydraulic control system, terminal is mounted in the gearshift oil cylinder (GH) in the gearshift actuating mechanism assembly (5) in the mechanical structure, is connected with pipeline with control unit between the two ends.
2. according to the described hydraulic mechanical type automatic gear shifting system of claim 1, it is characterized in that, described wet type gearshift main clutch (3) is to be sleeved on turbine shaft (31) and first (44) to be meant: clutch housing (13) splined hub in the wet type gearshift main clutch (3) is sleeved on oil distribution casing (59) and turbine shaft (31) right-hand member, piston (14) in the clutch housing (13) is fixed on the splined hub of clutch housing (13) by means of snap ring (20) and belleville spring (21), left and right sides platen (15) is installed in the inner spline groove of clutch housing (13) by means of its peripheral spline, in the right side of clutch housing (13) screw clutch cover (16) is installed, driven disc (17) is sleeved on first (44) by splined hub (18).
3. according to the described hydraulic mechanical type automatic gear shifting system of claim 1, it is characterized in that, described top bolt at rear box (6) is equipped with gearshift actuating mechanism assembly (5), in the top bolt of bonnet (8) block selecting actuating mechanism assembly (7) is installed and is meant:
Gearshift actuating mechanism assembly (5) includes gearshift oil cylinder (GH), gearshift actuator (47) and the axle sleeve that is fixed on the declutch shift shaft (49), piston in the gearshift oil cylinder (GH) is connected gearshift actuator (47) and axle sleeve sliding connection with actuator (47) bolt of shifting gears;
Block selecting actuating mechanism assembly (7) includes block selecting oil cylinder (GX), block selecting actuator (51) and is installed in voussoir on the declutch shift shaft (49), piston in the block selecting oil cylinder (GX) is connected with block selecting actuator (51) bolt, and block selecting actuator (51) is connected with the wedge slides of declutch shift shaft (49) right-hand member;
Gearshift actuator (47) motion track of gearshift actuating mechanism assembly (5) and the rotational axis of declutch shift shaft (49) coexist as in the vertical plane, and block selecting actuator (51) motion track of block selecting actuating mechanism assembly (7) is that spatial vertical is intersected with the rotational axis of declutch shift shaft (49).
4. according to the described hydraulic mechanical type automatic gear shifting system of claim 1, it is characterized in that described article one control loop also includes one-way valve (X), pressure is regulated solenoid valve (E), pressure regulator valve (H), converter pressure relief valve (G), locking solenoid valve (A1), water cooler (F) and lubricating oil path (J);
One-way valve (X) is connected in series with cycloid crescent gear pump (11), the outlet of one-way valve (X) regulates the P mouth of solenoid valve (E) with pressure and the filler opening pipeline of pressure regulator valve (H) is connected, the A mouth that pressure is regulated solenoid valve (E) is connected with the control port pipeline of pressure regulator valve (H), pressure regulator valve (H) oil outlet is connected with converter pressure relief valve (G) filler opening pipeline, converter pressure relief valve (G) oil outlet is connected in series with a throttle valve (K), the oil outlet of throttle valve (K) is connected with the P mouth pipeline of locking solenoid valve (A1), the A mouth of locking solenoid valve (A1) and B mouth respectively be installed in lockup clutch in the inlet opening of lockup clutch oil cylinder (LB) be connected with the inlet opening pipeline of fluid torque converter (Q) in being installed in mechanical structure, the delivery outlet pipeline of fluid torque converter (Q) connects water cooler (F) and lubricating oil path (J) import, and water cooler (F) outlet is connected with the oil sump pipeline;
Described second control loop also includes main clutch solenoid valve (D) and buffer (I);
The oil outlet of pressure regulator valve (H) is connected with the P mouth pipeline of main clutch solenoid valve (D), the A mouth of main clutch solenoid valve (D) is connected with the interface pipeline that wet type gearshift main clutch is handled oil cylinder (LZ) with the interface of buffer (I), and the T mouth of main clutch solenoid valve (D) is connected with the oil sump pipeline;
Described the 3rd control loop also includes No. 1 block selecting solenoid valve (B1) and No. 2 block selecting solenoid valves (B2);
The P mouth of No. 1 block selecting solenoid valve (B1) and No. 2 block selecting solenoid valves (B2) is connected with the oil outlet pipeline of pressure regulator valve (H), the A mouth of No. 1 block selecting solenoid valve (B1) and No. 2 block selecting solenoid valves (B2) is connected with block selecting oil cylinder (GX) left and right sides oil inlet and outlet pipeline respectively, and the T mouth of No. 1 block selecting solenoid valve (B1) and No. 2 block selecting solenoid valves (B2) is connected with the oil sump pipeline;
Described the 4th control loop also includes No. 1 gearshift solenoid valve (C1) and No. 2 gearshift solenoid valves (C2);
The P mouth of No. 1 gearshift solenoid valve (C1) and No. 2 gearshift solenoid valves (C2) is connected with the oil outlet pipeline of pressure regulator valve (H), the A mouth of No. 1 gearshift solenoid valve (C1) and No. 2 gearshift solenoid valves (C2) is connected with gearshift oil cylinder (GH) left and right sides oil inlet and outlet pipeline respectively, and the T mouth of No. 1 gearshift solenoid valve (C1) and No. 2 gearshift solenoid valves (C2) is connected with the oil sump pipeline.
CN2008100506319A 2008-04-24 2008-04-24 Hydraulic mechanical type automatic gear shifting system Expired - Fee Related CN101260933B (en)

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