CA1055805A - Torque converter transmission - Google Patents
Torque converter transmissionInfo
- Publication number
- CA1055805A CA1055805A CA306,688A CA306688A CA1055805A CA 1055805 A CA1055805 A CA 1055805A CA 306688 A CA306688 A CA 306688A CA 1055805 A CA1055805 A CA 1055805A
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- Canada
- Prior art keywords
- torque converter
- housing
- sleeve shaft
- shaft
- axial thrust
- Prior art date
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Abstract
TORQUE CONVERTER TRANSMISSION
Abstract of the Disclosure:
An angle drive transmission having an angle drive input shaft and bevel gearset driving an input sleeve shaft rotatably supported on each side of the driven bevel gear by bearings in an end wall and a central wall of the main housing to ground axial thrust to the main housing. The sleeve shaft extends through the end wall and is connected to drive, transmit axial thrust and support the clutch wall of an outboard-mounted rotary torque converter housing. An outboard cover housing has its open end secured to the main housing at the end wall, encloses the rotary housing, and has a central ground member rotatably and axially slidably supporting the impeller wall of the rotary housing. The torque converter has a bladed impeller on the impeller wall, a bladed turbine adjacent the clutch wall connected to drive an output shaft rotatably mounted in the sleeve shaft and connected to transmit axial thrust to the sleeve shaft, and a bladed stator between the impeller and turbine mounted on the ground member. A clutch on the clutch wall, in lock-up, drives the output shaft. A pump supplies fluid by internal central supply passages through the sleeve shaft and output shaft to enter the entrance passage between the turbine and stator to the converter flow-path and exit by an internal central exit passage between the impeller and stator and an outlet passage to a cooler. The torque converter hydrokinetic axial thrust and bevel gear axial thrust are axially opposed and substantially equal to balance thrust load on the sleeve shaft. The torque converter transmits all hydrokinetic thrust to the sleeve shaft in a direction toward the bevel gearset and the bevel gearset has left-hand spherical bevel gear teeth to transmit balancing thrust toward the torque converter.
Abstract of the Disclosure:
An angle drive transmission having an angle drive input shaft and bevel gearset driving an input sleeve shaft rotatably supported on each side of the driven bevel gear by bearings in an end wall and a central wall of the main housing to ground axial thrust to the main housing. The sleeve shaft extends through the end wall and is connected to drive, transmit axial thrust and support the clutch wall of an outboard-mounted rotary torque converter housing. An outboard cover housing has its open end secured to the main housing at the end wall, encloses the rotary housing, and has a central ground member rotatably and axially slidably supporting the impeller wall of the rotary housing. The torque converter has a bladed impeller on the impeller wall, a bladed turbine adjacent the clutch wall connected to drive an output shaft rotatably mounted in the sleeve shaft and connected to transmit axial thrust to the sleeve shaft, and a bladed stator between the impeller and turbine mounted on the ground member. A clutch on the clutch wall, in lock-up, drives the output shaft. A pump supplies fluid by internal central supply passages through the sleeve shaft and output shaft to enter the entrance passage between the turbine and stator to the converter flow-path and exit by an internal central exit passage between the impeller and stator and an outlet passage to a cooler. The torque converter hydrokinetic axial thrust and bevel gear axial thrust are axially opposed and substantially equal to balance thrust load on the sleeve shaft. The torque converter transmits all hydrokinetic thrust to the sleeve shaft in a direction toward the bevel gearset and the bevel gearset has left-hand spherical bevel gear teeth to transmit balancing thrust toward the torque converter.
Description
This application is a divislon of application Serial No~ 245,694, Eilecl February 13, 1976.
This invention relates to ~orque converter transmissions and particularly to a transmission drive and torque converter arrangement with axiaL thrust balancing oE transmission drive gear axial thxus-t an~ torque converter hydrokinetic axial thrust.
The transmission has drive gearing and a torque converter which provide substantially the same axial thrust in opposite dlrections and are connected to the same shaft to reduce the thrust load on the bearings supporting the shaft~
The transmission has an input shaft rotatably mounted by bearings in the transmission housing, a hydrokinetic torque converter mounted on and driven by the input shaft and an input bevel gearset driving the input shaft. The hydrokinetic axial thrust of the torque converter is transmitted to the input sha~t and substantially balanced by the axial thrust of the input bevel gearset to minimize axial thrust load on the bearings supporting the input shaft.
The transmission has an angle drive input shaft and bevel gearset driving an input sleeve shaft rotatably supported on each side of the bevel gear on the input sleeve shaft by bearings in an end wall and a central wall of the main housing to ground axial thrust to the main housing. The sleeve shaft extends through the end wall and is connecte~
to drive, transmit axial thrust and support the inboard wall of an outboard mounted rotary torque converter housing. An outboard fixed cover housing has its open end secured to the main housing at the end wall, encloses the rotary housing, and .... ~
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has a central ground member rotatably and axially slidably ~`~
supporting the outboard wall of the rotary housing. The torque converter has a bladed impeller on the outboard wall, a bladed turbine adjacent the inboard wall connected to drive an~output shaft rotatably mounted in the sleeve shaft and connected to transmit axial thrust to the sleeve shaft and a bladed stator between the impeller and turbine mounted on the ground member. The torque converter hydr~kinetic axial thrust and the axial thrust of the bevel gear on the input sleeve shaft are both connected to the input sleeve shaft and ar,e substantially equal and opposite to balance axial thrust load on the thrust bearing for the input sleeve shaft.
These and other features of the invention will be more apparent from the Eollowing description and accompanying drawings, wherein: -FIGURE 1 is a hydraulic schematic of the transmission and torque converter fluid supply;
FIGURE 2 is a partial sectional view of the transmission;
FIGURE 3 is a partial sectional view of a modified transmission; and FIGURE 4 is a partial view of the driven bevel gear showing the driving and thrust forces.
Referring to FIGURE 2, the transmission housing 10 has a main barrel housing 11 and a cover housing 12. The main housing 11 has an angle input drive annular housing 14 extending transversely relative to main housing ll. The angle input drive housing 14 has an engine attachment flange 16 and an annular boss 17 supporting the annular bearing support 18 for thrust, and rotary bearings 21 and 22 which support the input sleeve hub 23 of input bevel gear 24, The input or engine . _ _ _ _ shaft (not sho~n) i9 positioned in input sleeve hub 23 and 3 spline-connec-ted by splines 26 on the hub to drive bevel gear 24 in the direction of the input drive arrow R. The main housing 11 has a front end support wal:L 27 having a bearing sup~ort por-tion 28 with a central opening supporting radial and thrust bearing 29 for cen-trally supporting the input sleeve shaft 31. The sleeve shaft, at the rear end, is supported by bearing 32 mounted in a central opening in the central support wall 33.
A threaded lock nut 34, on the rear end of sleeve shaft 31, engages the inner race of bearing 32, which sequentially engages bevel gear 36, spacer ring 37, and the inner race of bearing 29 against shoulder 38 on the sleeve shaEt to axiall~
locate these parts on the sleeve shaft. Input bevel gear 24 drives bevel gear 36 which is connected by key 39 to drive sleeve shaft 31. The bevel gearset has its apex 41, or inter-section of the bevel gear axes, pitch lines and input hub, and sleeve shaft axes, and has left-hand spiral bevel gear teeth to provide, when driven in the direction of the arrow, bevel gear axial thrust in a direction from the driven gear 36 toward apex 41.
The front end wall 27 has an annular support member 43 secured by screws 44 to the wall ln overlapping relation to an opening 46 in the wall for a pump housing 47. The support member has a recess 48 to receive and locate a passage plate 4 and pump housing 47 in sandwich relation to provide fluid passages between support member 43 and pump housing ~7, as explained below. Screws 50 secure passage plate 49 and p~mp housing 47 to support member 43. The pump 51 is a conventional concentric gear pump with the internal gear 52 having a tang-~5i~ 5 and-groove or spline-drive connection to sleeve shaft 31, and the external gear 53 fixed to -the pump housing 47, and having (FIGURE 1) inlet port S~ and outlet port 56. The control and lubrication system drains back t:o the su~p 57 of main housing 11 and is pumped through int:ake screen 58 and suction line 59 to inlet port 54 and delivered by the pump 51 to outlet port 56 and mainline porti.on 61 to a filter 62.
The mainline portion extends to the exterior surface of the main housing 11 for connection to an external filter mounted on the 10 transmission housing 10 or vehicle. The mainline portion 66 ~.
from the filter returns filtered fluid to the regulator valve 67, having a valve element 68 having equal-small-diameter lands 68a, 68b, and 68c, and a larger land 68d in a stepped bore 69.
Mainline 66 is connected at all times between lands 68b and 68c and restricted passage 71 through the valve element 68 to the chamber 72 at the closed end of the bore 69. A spring 73, seated on the spring seat and guide and valve stop assembly 74 is located in spring chamber 76, which is vented through the spring seat, and engages the valve element. The mainline pressure 20 is regulated by mainline pressure in chamber 72, acting on :
land 68a and moving valve element 68 against the bias of spring 73, to connect first overage to converter supply line 77 and second overage to exhaust 78. A conventional forward line 79 is connected to the step between lands 68c and 68d to reduce the regulated mainline pressure in forward drive. The converter -supply line 77 has one branch connected to converter by-pass or relief valve 81, and another branch connected to the converter.
The pressure in converter supply line 77 is limited at a value less than mainline pressure by converter by-pass or relief valve 81, and the excess fluid is returned by e~haust 82 to the sump. The by-pass valve 81 may be located in support member 43 adjacent regulator valve 67 or in the sump 57, as only one passage is required to extend to the by-pass valve. Sump 57 is at the lower portion of main housing 11 and has the intake screen 58 submerged in oil. The suction line 59 is, in part, a pipe to -the end wall 27 and, in part a channel line in passage plate 49 to pump 51 inlet port 54. Pump outlet port 56 is connected through another channel line 61 in passage plate 49 to a conventional filter boss (not shown) o~ the exterior of the main housing 11, and re-turned by line 66 in passage plate 49 to the regulator valve 67. The converter supply line 77 is connected by the passage plate 49 to the converter by-pass valve 81, and to transfer passage 83 which consists of ra~ial passage 84 through sleeve shaEt 31, with seals preventing axial flow along the internal and external surfaces of the sleeve shaft~ At the rear of passage 84, seal 86 on sleeve shaft 31 engages the inner opening of pump housin~ 47 of wall 27, and seal 87 on turbine output shaft 88 engages the internal surface of sleeve shaft 31. At -the forward side of passage 84, a transfer passage 91 has seals on both sides of lock-up clutch apply passage 92 for flow through transfer passage 91 from support member 43 to rotary converter housing 93 to provide a seal. At the exterior of sleeve shaft 31, seal 94 on turbine output shaft 88 provides a seal at the interior of sleeve shaft 31. Any leakage through splines 95 be-tween sleeve shaft 31 and torque converter housing wall portion 97 and bearing 115 will flow to the chamber in the torque converter rotary housing. Line 77 has a further portion 96 e~tending from transfer passage 83 radially and axially in the output shaft to the front end of the output shaft~ This construction of line 77 provides a central internal torque converter supply line ox passage having supply transfer passage 83 located largely inboard of the main transmission housing.
The outboard-mounted rotary torque converter housing 93 has a re~r clutch wall portion 97 drive connected by axially movable splines 95 to the front outboard end of sleeve shaft 31, and a front and outer wall portion 98 secured by screws 99 to the rear wall to form and enclose an annular operating chamber. Outboard cover housing 12 has, at the open end, an attaching flange 101 secured by screws 102 to the outer side of main housing 11 at end wall 27 thereof. Cover housing 12 encloses the rotary tor~ue converter housing and has a front transverse end wall 103. A ground me~ber 104 has a shaft portion 106 extending toward, but spaced from, turbine output shaft 88 and attaching flange 107 which is pilo-ted in recess 108 in end wall 103 and secured by screws (not shown). The bladed impeller member I is formed on the inside of rotary housing wall portion 98. The bladed turbine member T is secured to turbine hub 114 splined to output shaft 88 to transmit drive, but not thrust. The output shaft is rotatably mounted in the input sleeve shaft of this same side input-output torque converter. Bearing 115, between rotary housing rear wall 97 and turbine hub 114, supports the turbine, hub, and output shaft for rotation relative to rotary housing 93.
The bladed stator S is mounted by a one-way brake hub 109 splined on ground member 104 shaft portion 106. The impeller, turbine, and stator conventionally define a toric operating chamber. One-way brake hub 109 has an outer race 110 secured to bladed stator S and an inner race 111 fixed by splines to ground sleeve shaft portion 106 with rollers 112 therebetween.
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One race has conventional cams cooperating with rollers 112 to prevent reverse rotation and permit ~orward rotation.
A thrust member 113 is fixed to the outer race 110 and has a portion having opposite thrust faces between the turbine hub 114 and inn~r race 111. The thrust member 113 face contacting turbine hub 114 thrust face has radial grooves, so there is an entrance flow passage between the turbine and stator hubs. Rotary housing front wall 98 is rotatably supported and axially located by bearing 116 fixed to shaft portion 106.
A bearing support member 117 is secured by screws and a fastener ring to the inner edge of front wall 98 and has a forwardly extending seal sleeve portion 118 extending into an axial annular sealing flange 119 on ground member 10~. There is a seal ring between flange 119 and sleeve portion 118 to provide a torque converter chamber outlet flow passage through bearing 116 and between the exterior of ground member shaft portion 106 and the interior of sleeve portion 118 and flange 119 to outlet line 121 through flange 107 and front wall 103 to pipe fitting 122, providing an internal central outlet passage. From the fitting 122 a pipe 123 continues the outlet passage to the cooler 124.
The cooler outlet i5 returned by pipe 126 to the sump 57.
The seal sleeve portion 118, flange 119, and ground member shaft portion 106 provide a transfer passage to transfer fluid from the rotary torque converter housing 93 operating chamber to stationary ground member flange 107 and cover housing wall 103.
The passage 127 in wall 103 and ground sleeve shaft portion lG6 provide an alternate torque converter supply passage which would be supplied from torque converter supply line 77 iniwall 27 by a pipe passage externally of the transmission housing 10, and the above-described internal torque converter supply passage ~ tt.~
with transfer passage 83 would be omitted. Also~ if the torque converter requires that the supply be connected to the impeller inlet, then an external torque converter supply pipe-continuation of line 77 is connected to outlet passage 121;
the alternate supply passage 127 is an outlet connected by an external pipe to the cooler 124; and the internal supply passage 77 is omitted.
- The lock-up clutch 131 has a piston 132 in a cylinder 133 formed in the rear wall portion 97. The driven plate 134 is fixed to the turbine hub 114. The backing plate 136 is fixed to,the rotary torque converter housing 93.
The gearing 137 (not shown in detail) is conventional, `~
preferably planetary power shift gearing, providing one or more forward drive ratios and a reverse drive from the turbine output shaft 88 to load or final output shaft 138. A conventional fluid control system 139 is supplied by mainline branch 141 and preferably automatically provides, in response to speed, lock-up clutch apply pressure to line 92 to apply lock-up clutch 131 and manual forward and reverse control and automatic forward ratio control. The turbine output shaft 88 is supported at the converter end by bearing 115 and at the end driving the gearing 137 by bearing 140 in central support wall 33.
When the engine drives the transmission input hub 23 and gear 24, bevel gearset 24-36 drives input sleeve shaft 31 and pump 51. The pump 51 supplies fluid from sump 57 at a pressure limited by converter by-pass valve 81 through the central internal supply passage, line 77, which is provided by a channel in passage plate 49, transfer passage 84 through the sleeve shaft 31, and passage 96 in turbine output shaft 88 to -the space between the adjacent ends of turbine output shaft 88 and shaft por-tion 106. Sleeve shaft 31, through splines 95, drives rotary housing 93 and impell~r I to circulate fluid in a toroidal flow-path (arrow), in the toric chamber formed by bladed impeller I, turbine T, and stator S membe~s, and turbine T drives output shaft 88 rotatably mounted in the input shaft of this same side input-output torque converter.
The supply pressure and toric flow induces inle-t flow from the space between shaft portion 106 and turbine output shaft 88, a,portion of supply passage 77, through the entrance passage or space grooves in thrust member 113 between stator hub 109 and turbine hub 114 into the toric flow-pa-th through bladed stator S. Fluid exits from the toric flow-path through the central internal exit passage between stator hub 109 and rotary housing impeller front wall portion 98, and the outlet passage having portions extending through bearing 116, the transfer passage between the exterior of shaft portion 106 and the interior seal member sleeve 118 and flange 119, passage 121, to fitting 122, and then by external passage 123 to cooler 124 20 and passage 126 to internal sump 57. When the torque converter is filled and operating, the entire operating chamber in the rotary housing is filled and the pressure is equalized in the toric flow chamber portion and between the turbine member and rear wall~ as there is fluid communication across the outer diameter of the turbine T and through the driven plate 134.
The thrust of left-hand spiral bevel gearset 24-36 on the gear axis is when the driven gear is rotating clockwise, as viewed from the rear, or the output end is from the gear toward apex 41, and thrust bearing 29 provides the reaction thrust. The torque converter thrust is transferred to the rotary housing 93 and ~ 3~
yrounded in both directions by thrust bearing 116 axially fixed by a shoulder and snap ring to axially fixed s:haft portion 106.
Turbine member T thrust toward rear wall 97 is transferred by turbine hub 114 and thrust bearing 115 to rear wall 97 and not to ~utput sha~t 88. All rearward thrust on rear wall 97 is transferred by rotary housing 93 to thrust bearing 116.
Splines 95, between rotary housing rear wal:L 97 and sleeve shaft 31, permit sufficient relative axial rnovement so that no significant thrust is transmitted between these members. :
0 Rear wall portion 97 and turbine forward thrust are transmitted tq thrust member 113, Stator forward thrust is also transmitted to thrust member 113, so turbine and stator forward thrust are grounded through the inner race 111 and snap ring to shaft portion 106. Stator rearward thrust is transferred by thrust member 113 to turbine hub 114, bearing 115, and rotary housing 93.
The modified transmission shown in FIGURE 3 has many portions identical and similar to FIGURE 2, so like reference numerals, primed, have been used to identify these portions, and reference to the above description is made for a description of these portions. The following description points out the identical, similar, and different portions of the FIGURE 3 transmission. The same fluid supply system for the torque converter as shown in FIGURE 1 and described above is used.
The housings are the same, except for the outlet passage 121' in cover housing 12' which is described below. The input member 23' bevel gearset 24'-36', sleeve shaft 31', and the bearings mounting the input member and sleeve shaft in the housing are basically ~he same, except that the left-hand spiral bevel gearset 24'-36' is designed, has spiral and pitch angles and tooth design to provide, when rotating clockwise, as viPwed from the output (arrow R), a gear thrust (arrow GT) toward the apex 41' and toward the converter to balance the net converter housing 93' thrust (arrow CT) in the opposite direction. The blade angles of the bladed members, the volume and velocity of toric ~low, and the operating characteristics, -the speed of the members, torque and torque multiplication, determine the rotary housing thrust.
The ro-tary torque converter housing 93' is, at wall 98', rotatably mounted by a plain bearing 116' or needle bearing and seal (not shown) which permits free axial movement and th'us does not transmit axial thrust to shaft portion 106'.
The rotary housing 93', at wall 97', is rotatably connected by splines 95' to sleeve sha~t 31' and has a spline sleeve end abutting a shoulder 143 to transmit the large torque converter rotary housing thrust (arrow CT) directly to the sleeve shaft 31'. The lower rotary housing thrust, which occurs during overrun, is in the opposite direction and is transferred from wall 97' through bearing 115', turbine hub 114', thrust member 113', and inner race 111' to shaEt portion 106'. Some o~errun thrust in the opposite direction may also be transerred from wall 97' through snap ring :L42 to sleeve shaft 31' to limit transer of such thrust through the above path to the shaft portion 106~o The end wall assembly, consisting of housing end wall 27', support member 43', channel passage plate 49', pump housing 47', and pump 51', is identical, but the section of support member 43' is different and shows some other passajge portions, such as suction passage 59' and a passage to the filter. The above-described passages in FIGURE 1 are structurally located in both passage plate 49' and support member 43'.
The rotar~7 housing 93', with regard to the converter structure, and lock-up clutch 131', are -the sa~ne except that, as described above, bear:ing 116' is a plain beaxing and bearing support 117' does not have sleeve portion 118 to provide a transfer passage.
Shaft portion 106' has an internal outlet passage 144 connecting outlet passage 121' to radial transfer passage 146 for communication with the exit passage between stator hub 109' and wall 98'~ The closure or wall 147 in shaft portion 106' 10 blocks direct communication of the outlet passage with the supply passage at the space between turbine output shaft 88' and shaft portion 106'.
The operation oE the modieied transmission shown in ~IGURE 3 is similar, but has important differences, now pointed out. Fluid is similarly supplied by the internal passages to the toric flow-path, but exits through the exit space or passage between stator hub 109' and wall 98' and bearing support member 117', to outlet passages, radial transfer passage 146, axial passage 144 in the ground sleeve, to outlet passage 121' and 20 pipe 123', to cooler 124', and then is returned to sump 57'.
While the above-described, particularly with respect to FIGURE 2 but also in FIGURE 3, in ternal torque converter supply passages are preferred, the supply passage 77 may be connected externally oi~ cover housing 12' to its end wall 103' and contlnue as a pipe extending through passages 121', 144, and wall 147, externally sealed to each wall where it passes through each wall to supply the entrance space between the shaft portion 106' and sle~ve and inner shafts 31', 88'.
The torque converter and the bevel gearset are 30 de~igned to provide substantially equal and opposite axial thrust during maximum torque and power drive operation to ) substantially reduce or eliminate hiyh thrust loads on the main thrust bearing ~9'.
FIGURE 4 is a partial view of the driven bevel gear 36', showing the left-hand spherical bevel gear looking at the near side of the gear as viewed in FIGUl~E 3 showing the left-hand spherical bevel gear teeth center-line to illustrate these terms and showing the driving force (arrow D) from the driving gear which is the same as the direction of ro-tation ~arrow R) of the driven gear and the resultant gear thrust (arrow G~).
This invention relates to ~orque converter transmissions and particularly to a transmission drive and torque converter arrangement with axiaL thrust balancing oE transmission drive gear axial thxus-t an~ torque converter hydrokinetic axial thrust.
The transmission has drive gearing and a torque converter which provide substantially the same axial thrust in opposite dlrections and are connected to the same shaft to reduce the thrust load on the bearings supporting the shaft~
The transmission has an input shaft rotatably mounted by bearings in the transmission housing, a hydrokinetic torque converter mounted on and driven by the input shaft and an input bevel gearset driving the input shaft. The hydrokinetic axial thrust of the torque converter is transmitted to the input sha~t and substantially balanced by the axial thrust of the input bevel gearset to minimize axial thrust load on the bearings supporting the input shaft.
The transmission has an angle drive input shaft and bevel gearset driving an input sleeve shaft rotatably supported on each side of the bevel gear on the input sleeve shaft by bearings in an end wall and a central wall of the main housing to ground axial thrust to the main housing. The sleeve shaft extends through the end wall and is connecte~
to drive, transmit axial thrust and support the inboard wall of an outboard mounted rotary torque converter housing. An outboard fixed cover housing has its open end secured to the main housing at the end wall, encloses the rotary housing, and .... ~
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has a central ground member rotatably and axially slidably ~`~
supporting the outboard wall of the rotary housing. The torque converter has a bladed impeller on the outboard wall, a bladed turbine adjacent the inboard wall connected to drive an~output shaft rotatably mounted in the sleeve shaft and connected to transmit axial thrust to the sleeve shaft and a bladed stator between the impeller and turbine mounted on the ground member. The torque converter hydr~kinetic axial thrust and the axial thrust of the bevel gear on the input sleeve shaft are both connected to the input sleeve shaft and ar,e substantially equal and opposite to balance axial thrust load on the thrust bearing for the input sleeve shaft.
These and other features of the invention will be more apparent from the Eollowing description and accompanying drawings, wherein: -FIGURE 1 is a hydraulic schematic of the transmission and torque converter fluid supply;
FIGURE 2 is a partial sectional view of the transmission;
FIGURE 3 is a partial sectional view of a modified transmission; and FIGURE 4 is a partial view of the driven bevel gear showing the driving and thrust forces.
Referring to FIGURE 2, the transmission housing 10 has a main barrel housing 11 and a cover housing 12. The main housing 11 has an angle input drive annular housing 14 extending transversely relative to main housing ll. The angle input drive housing 14 has an engine attachment flange 16 and an annular boss 17 supporting the annular bearing support 18 for thrust, and rotary bearings 21 and 22 which support the input sleeve hub 23 of input bevel gear 24, The input or engine . _ _ _ _ shaft (not sho~n) i9 positioned in input sleeve hub 23 and 3 spline-connec-ted by splines 26 on the hub to drive bevel gear 24 in the direction of the input drive arrow R. The main housing 11 has a front end support wal:L 27 having a bearing sup~ort por-tion 28 with a central opening supporting radial and thrust bearing 29 for cen-trally supporting the input sleeve shaft 31. The sleeve shaft, at the rear end, is supported by bearing 32 mounted in a central opening in the central support wall 33.
A threaded lock nut 34, on the rear end of sleeve shaft 31, engages the inner race of bearing 32, which sequentially engages bevel gear 36, spacer ring 37, and the inner race of bearing 29 against shoulder 38 on the sleeve shaEt to axiall~
locate these parts on the sleeve shaft. Input bevel gear 24 drives bevel gear 36 which is connected by key 39 to drive sleeve shaft 31. The bevel gearset has its apex 41, or inter-section of the bevel gear axes, pitch lines and input hub, and sleeve shaft axes, and has left-hand spiral bevel gear teeth to provide, when driven in the direction of the arrow, bevel gear axial thrust in a direction from the driven gear 36 toward apex 41.
The front end wall 27 has an annular support member 43 secured by screws 44 to the wall ln overlapping relation to an opening 46 in the wall for a pump housing 47. The support member has a recess 48 to receive and locate a passage plate 4 and pump housing 47 in sandwich relation to provide fluid passages between support member 43 and pump housing ~7, as explained below. Screws 50 secure passage plate 49 and p~mp housing 47 to support member 43. The pump 51 is a conventional concentric gear pump with the internal gear 52 having a tang-~5i~ 5 and-groove or spline-drive connection to sleeve shaft 31, and the external gear 53 fixed to -the pump housing 47, and having (FIGURE 1) inlet port S~ and outlet port 56. The control and lubrication system drains back t:o the su~p 57 of main housing 11 and is pumped through int:ake screen 58 and suction line 59 to inlet port 54 and delivered by the pump 51 to outlet port 56 and mainline porti.on 61 to a filter 62.
The mainline portion extends to the exterior surface of the main housing 11 for connection to an external filter mounted on the 10 transmission housing 10 or vehicle. The mainline portion 66 ~.
from the filter returns filtered fluid to the regulator valve 67, having a valve element 68 having equal-small-diameter lands 68a, 68b, and 68c, and a larger land 68d in a stepped bore 69.
Mainline 66 is connected at all times between lands 68b and 68c and restricted passage 71 through the valve element 68 to the chamber 72 at the closed end of the bore 69. A spring 73, seated on the spring seat and guide and valve stop assembly 74 is located in spring chamber 76, which is vented through the spring seat, and engages the valve element. The mainline pressure 20 is regulated by mainline pressure in chamber 72, acting on :
land 68a and moving valve element 68 against the bias of spring 73, to connect first overage to converter supply line 77 and second overage to exhaust 78. A conventional forward line 79 is connected to the step between lands 68c and 68d to reduce the regulated mainline pressure in forward drive. The converter -supply line 77 has one branch connected to converter by-pass or relief valve 81, and another branch connected to the converter.
The pressure in converter supply line 77 is limited at a value less than mainline pressure by converter by-pass or relief valve 81, and the excess fluid is returned by e~haust 82 to the sump. The by-pass valve 81 may be located in support member 43 adjacent regulator valve 67 or in the sump 57, as only one passage is required to extend to the by-pass valve. Sump 57 is at the lower portion of main housing 11 and has the intake screen 58 submerged in oil. The suction line 59 is, in part, a pipe to -the end wall 27 and, in part a channel line in passage plate 49 to pump 51 inlet port 54. Pump outlet port 56 is connected through another channel line 61 in passage plate 49 to a conventional filter boss (not shown) o~ the exterior of the main housing 11, and re-turned by line 66 in passage plate 49 to the regulator valve 67. The converter supply line 77 is connected by the passage plate 49 to the converter by-pass valve 81, and to transfer passage 83 which consists of ra~ial passage 84 through sleeve shaEt 31, with seals preventing axial flow along the internal and external surfaces of the sleeve shaft~ At the rear of passage 84, seal 86 on sleeve shaft 31 engages the inner opening of pump housin~ 47 of wall 27, and seal 87 on turbine output shaft 88 engages the internal surface of sleeve shaft 31. At -the forward side of passage 84, a transfer passage 91 has seals on both sides of lock-up clutch apply passage 92 for flow through transfer passage 91 from support member 43 to rotary converter housing 93 to provide a seal. At the exterior of sleeve shaft 31, seal 94 on turbine output shaft 88 provides a seal at the interior of sleeve shaft 31. Any leakage through splines 95 be-tween sleeve shaft 31 and torque converter housing wall portion 97 and bearing 115 will flow to the chamber in the torque converter rotary housing. Line 77 has a further portion 96 e~tending from transfer passage 83 radially and axially in the output shaft to the front end of the output shaft~ This construction of line 77 provides a central internal torque converter supply line ox passage having supply transfer passage 83 located largely inboard of the main transmission housing.
The outboard-mounted rotary torque converter housing 93 has a re~r clutch wall portion 97 drive connected by axially movable splines 95 to the front outboard end of sleeve shaft 31, and a front and outer wall portion 98 secured by screws 99 to the rear wall to form and enclose an annular operating chamber. Outboard cover housing 12 has, at the open end, an attaching flange 101 secured by screws 102 to the outer side of main housing 11 at end wall 27 thereof. Cover housing 12 encloses the rotary tor~ue converter housing and has a front transverse end wall 103. A ground me~ber 104 has a shaft portion 106 extending toward, but spaced from, turbine output shaft 88 and attaching flange 107 which is pilo-ted in recess 108 in end wall 103 and secured by screws (not shown). The bladed impeller member I is formed on the inside of rotary housing wall portion 98. The bladed turbine member T is secured to turbine hub 114 splined to output shaft 88 to transmit drive, but not thrust. The output shaft is rotatably mounted in the input sleeve shaft of this same side input-output torque converter. Bearing 115, between rotary housing rear wall 97 and turbine hub 114, supports the turbine, hub, and output shaft for rotation relative to rotary housing 93.
The bladed stator S is mounted by a one-way brake hub 109 splined on ground member 104 shaft portion 106. The impeller, turbine, and stator conventionally define a toric operating chamber. One-way brake hub 109 has an outer race 110 secured to bladed stator S and an inner race 111 fixed by splines to ground sleeve shaft portion 106 with rollers 112 therebetween.
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One race has conventional cams cooperating with rollers 112 to prevent reverse rotation and permit ~orward rotation.
A thrust member 113 is fixed to the outer race 110 and has a portion having opposite thrust faces between the turbine hub 114 and inn~r race 111. The thrust member 113 face contacting turbine hub 114 thrust face has radial grooves, so there is an entrance flow passage between the turbine and stator hubs. Rotary housing front wall 98 is rotatably supported and axially located by bearing 116 fixed to shaft portion 106.
A bearing support member 117 is secured by screws and a fastener ring to the inner edge of front wall 98 and has a forwardly extending seal sleeve portion 118 extending into an axial annular sealing flange 119 on ground member 10~. There is a seal ring between flange 119 and sleeve portion 118 to provide a torque converter chamber outlet flow passage through bearing 116 and between the exterior of ground member shaft portion 106 and the interior of sleeve portion 118 and flange 119 to outlet line 121 through flange 107 and front wall 103 to pipe fitting 122, providing an internal central outlet passage. From the fitting 122 a pipe 123 continues the outlet passage to the cooler 124.
The cooler outlet i5 returned by pipe 126 to the sump 57.
The seal sleeve portion 118, flange 119, and ground member shaft portion 106 provide a transfer passage to transfer fluid from the rotary torque converter housing 93 operating chamber to stationary ground member flange 107 and cover housing wall 103.
The passage 127 in wall 103 and ground sleeve shaft portion lG6 provide an alternate torque converter supply passage which would be supplied from torque converter supply line 77 iniwall 27 by a pipe passage externally of the transmission housing 10, and the above-described internal torque converter supply passage ~ tt.~
with transfer passage 83 would be omitted. Also~ if the torque converter requires that the supply be connected to the impeller inlet, then an external torque converter supply pipe-continuation of line 77 is connected to outlet passage 121;
the alternate supply passage 127 is an outlet connected by an external pipe to the cooler 124; and the internal supply passage 77 is omitted.
- The lock-up clutch 131 has a piston 132 in a cylinder 133 formed in the rear wall portion 97. The driven plate 134 is fixed to the turbine hub 114. The backing plate 136 is fixed to,the rotary torque converter housing 93.
The gearing 137 (not shown in detail) is conventional, `~
preferably planetary power shift gearing, providing one or more forward drive ratios and a reverse drive from the turbine output shaft 88 to load or final output shaft 138. A conventional fluid control system 139 is supplied by mainline branch 141 and preferably automatically provides, in response to speed, lock-up clutch apply pressure to line 92 to apply lock-up clutch 131 and manual forward and reverse control and automatic forward ratio control. The turbine output shaft 88 is supported at the converter end by bearing 115 and at the end driving the gearing 137 by bearing 140 in central support wall 33.
When the engine drives the transmission input hub 23 and gear 24, bevel gearset 24-36 drives input sleeve shaft 31 and pump 51. The pump 51 supplies fluid from sump 57 at a pressure limited by converter by-pass valve 81 through the central internal supply passage, line 77, which is provided by a channel in passage plate 49, transfer passage 84 through the sleeve shaft 31, and passage 96 in turbine output shaft 88 to -the space between the adjacent ends of turbine output shaft 88 and shaft por-tion 106. Sleeve shaft 31, through splines 95, drives rotary housing 93 and impell~r I to circulate fluid in a toroidal flow-path (arrow), in the toric chamber formed by bladed impeller I, turbine T, and stator S membe~s, and turbine T drives output shaft 88 rotatably mounted in the input shaft of this same side input-output torque converter.
The supply pressure and toric flow induces inle-t flow from the space between shaft portion 106 and turbine output shaft 88, a,portion of supply passage 77, through the entrance passage or space grooves in thrust member 113 between stator hub 109 and turbine hub 114 into the toric flow-pa-th through bladed stator S. Fluid exits from the toric flow-path through the central internal exit passage between stator hub 109 and rotary housing impeller front wall portion 98, and the outlet passage having portions extending through bearing 116, the transfer passage between the exterior of shaft portion 106 and the interior seal member sleeve 118 and flange 119, passage 121, to fitting 122, and then by external passage 123 to cooler 124 20 and passage 126 to internal sump 57. When the torque converter is filled and operating, the entire operating chamber in the rotary housing is filled and the pressure is equalized in the toric flow chamber portion and between the turbine member and rear wall~ as there is fluid communication across the outer diameter of the turbine T and through the driven plate 134.
The thrust of left-hand spiral bevel gearset 24-36 on the gear axis is when the driven gear is rotating clockwise, as viewed from the rear, or the output end is from the gear toward apex 41, and thrust bearing 29 provides the reaction thrust. The torque converter thrust is transferred to the rotary housing 93 and ~ 3~
yrounded in both directions by thrust bearing 116 axially fixed by a shoulder and snap ring to axially fixed s:haft portion 106.
Turbine member T thrust toward rear wall 97 is transferred by turbine hub 114 and thrust bearing 115 to rear wall 97 and not to ~utput sha~t 88. All rearward thrust on rear wall 97 is transferred by rotary housing 93 to thrust bearing 116.
Splines 95, between rotary housing rear wal:L 97 and sleeve shaft 31, permit sufficient relative axial rnovement so that no significant thrust is transmitted between these members. :
0 Rear wall portion 97 and turbine forward thrust are transmitted tq thrust member 113, Stator forward thrust is also transmitted to thrust member 113, so turbine and stator forward thrust are grounded through the inner race 111 and snap ring to shaft portion 106. Stator rearward thrust is transferred by thrust member 113 to turbine hub 114, bearing 115, and rotary housing 93.
The modified transmission shown in FIGURE 3 has many portions identical and similar to FIGURE 2, so like reference numerals, primed, have been used to identify these portions, and reference to the above description is made for a description of these portions. The following description points out the identical, similar, and different portions of the FIGURE 3 transmission. The same fluid supply system for the torque converter as shown in FIGURE 1 and described above is used.
The housings are the same, except for the outlet passage 121' in cover housing 12' which is described below. The input member 23' bevel gearset 24'-36', sleeve shaft 31', and the bearings mounting the input member and sleeve shaft in the housing are basically ~he same, except that the left-hand spiral bevel gearset 24'-36' is designed, has spiral and pitch angles and tooth design to provide, when rotating clockwise, as viPwed from the output (arrow R), a gear thrust (arrow GT) toward the apex 41' and toward the converter to balance the net converter housing 93' thrust (arrow CT) in the opposite direction. The blade angles of the bladed members, the volume and velocity of toric ~low, and the operating characteristics, -the speed of the members, torque and torque multiplication, determine the rotary housing thrust.
The ro-tary torque converter housing 93' is, at wall 98', rotatably mounted by a plain bearing 116' or needle bearing and seal (not shown) which permits free axial movement and th'us does not transmit axial thrust to shaft portion 106'.
The rotary housing 93', at wall 97', is rotatably connected by splines 95' to sleeve sha~t 31' and has a spline sleeve end abutting a shoulder 143 to transmit the large torque converter rotary housing thrust (arrow CT) directly to the sleeve shaft 31'. The lower rotary housing thrust, which occurs during overrun, is in the opposite direction and is transferred from wall 97' through bearing 115', turbine hub 114', thrust member 113', and inner race 111' to shaEt portion 106'. Some o~errun thrust in the opposite direction may also be transerred from wall 97' through snap ring :L42 to sleeve shaft 31' to limit transer of such thrust through the above path to the shaft portion 106~o The end wall assembly, consisting of housing end wall 27', support member 43', channel passage plate 49', pump housing 47', and pump 51', is identical, but the section of support member 43' is different and shows some other passajge portions, such as suction passage 59' and a passage to the filter. The above-described passages in FIGURE 1 are structurally located in both passage plate 49' and support member 43'.
The rotar~7 housing 93', with regard to the converter structure, and lock-up clutch 131', are -the sa~ne except that, as described above, bear:ing 116' is a plain beaxing and bearing support 117' does not have sleeve portion 118 to provide a transfer passage.
Shaft portion 106' has an internal outlet passage 144 connecting outlet passage 121' to radial transfer passage 146 for communication with the exit passage between stator hub 109' and wall 98'~ The closure or wall 147 in shaft portion 106' 10 blocks direct communication of the outlet passage with the supply passage at the space between turbine output shaft 88' and shaft portion 106'.
The operation oE the modieied transmission shown in ~IGURE 3 is similar, but has important differences, now pointed out. Fluid is similarly supplied by the internal passages to the toric flow-path, but exits through the exit space or passage between stator hub 109' and wall 98' and bearing support member 117', to outlet passages, radial transfer passage 146, axial passage 144 in the ground sleeve, to outlet passage 121' and 20 pipe 123', to cooler 124', and then is returned to sump 57'.
While the above-described, particularly with respect to FIGURE 2 but also in FIGURE 3, in ternal torque converter supply passages are preferred, the supply passage 77 may be connected externally oi~ cover housing 12' to its end wall 103' and contlnue as a pipe extending through passages 121', 144, and wall 147, externally sealed to each wall where it passes through each wall to supply the entrance space between the shaft portion 106' and sle~ve and inner shafts 31', 88'.
The torque converter and the bevel gearset are 30 de~igned to provide substantially equal and opposite axial thrust during maximum torque and power drive operation to ) substantially reduce or eliminate hiyh thrust loads on the main thrust bearing ~9'.
FIGURE 4 is a partial view of the driven bevel gear 36', showing the left-hand spherical bevel gear looking at the near side of the gear as viewed in FIGUl~E 3 showing the left-hand spherical bevel gear teeth center-line to illustrate these terms and showing the driving force (arrow D) from the driving gear which is the same as the direction of ro-tation ~arrow R) of the driven gear and the resultant gear thrust (arrow G~).
Claims (4)
1. In a transmission; a main housing having first and second transverse supports; a first shaft located between said supports and having a portion extending through said first support; rotary and axial thrust bearing means rotatably supporting and axially locating said first shaft relative to said supports; a drive member having bearing means rotatably supporting said drive member in said main housing; gear means including a gear on said first shaft between said supports and a gear on said drive member providing gear axial thrust on said first shaft in one direction; a cover secured to said main housing providing a torque converter housing chamber and having a fixed ground member extending into said torque converter housing chamber toward said first support; a rotary torque converter housing having one side wall rotatably and axial-ly slidably mounted on said ground member and another side wall axially fixed and drive connected to said portion of said first shaft to rotate with said first shaft in said torque converter housing chamber and enclosing between said side walls a torque converter operating chamber; a second shaft rotatably mounted in said main housing; a hub drive connected to said second shaft and located in said torque converter operating chamber adjacent said another side wall; bearing means on said hub to transmit axial thrust to said first shaft; and torque converter means in said operating chamber including bladed pump means rotatably driven by one of said rotary torque converter housing and said hub, bladed turbine means rotatably driving one of said rotary torque converter housing and said hub and bladed stator means mounted on said ground member to prevent reverse rotation operative when the pump means is driven to circulate fluid through the turbine means and stator means in a toroidal flow path providing a torque multiplication drive and a net torque converter axial thrust on said torque converter housing providing a torque converter axial thrust acting on said first shaft in a direction opposite to said gear axial thrust to balance a substantial portion of said gear and torque converter axial thrust during normal drive operation.
2. In a transmission; a main housing having first and second transverse supports; a sleeve shaft located between said supports and having a portion extending through said first support and having rotary and axial thrust bearing means rotatably supporting and axially locating said sleeve shaft relative to said supports; an input member having bearing means rotatably supporting said input member in said main housing transverse to said sleeve shaft; bevel gear means including a bevel gear on said sleeve shaft between said supports and a bevel gear on said input member having the apex on the side adjacent said end wall and providing bevel gear axial thrust on said sleeve shaft in one direction from said first support toward said portion of said sleeve shaft; a cover secured to said main housing providing a torque converter housing chamber and having a fixed ground member extending into said torque converter housing chamber toward said portion of said sleeve shaft; a torque converter housing having one side wall rotatably and axially slidably mounted on said ground member and another side wall axially fixed and drive connected to said portion of said sleeve shaft to rotate with said sleeve shaft in said torque converter housing chamber and enclosing between said side walls a torque converter operating chamber; an output shaft rotatably mounted in said sleeve shaft; a turbine hub drive connected to said output shaft and located in said torque converter operating chamber adjacent said another side wall; rotary bearing means mounting said turbine hub and output shaft for rotation relative to said torque converter housing and to transmit axial thrust to said sleeve shaft; and torque converter means in said operating chamber including bladed pump means rotatably driven by said torque converter housing, bladed turbine means rotatably driving said turbine hub and bladed stator means mounted on said ground member to prevent reverse rotation operative when the pump means is driven to circulate fluid through the turbine means and stator means in a toroidal flow path providing a torque multiplication drive and a net torque converter axial thrust on said torque converter housing providing a torque converter thrust acting on said sleeve shaft in a direction opposite to said one direction of said bevel gear axial thrust to balance a substantial portion of said bevel gear and torque converter axial thrust during normal drive operation.
3. In a transmission; a main housing having a transverse end wall at one end of said housing and another transverse wall spaced from said end wall; each wall having a central aperture; a sleeve shaft located between said walls and having a portion extending through said aperture in said end wall and having rotary and axial thrust bearing means rotatably supporting and axially locating said sleeve shaft on said walls; an input member having bearing means rotatably supporting said input member in said main housing transverse to said sleeve shaft; bevel gear means including a bevel gear
3. In a transmission; a main housing having a transverse end wall at one end of said housing and another transverse wall spaced from said end wall; each wall having a central aperture; a sleeve shaft located between said walls and having a portion extending through said aperture in said end wall and having rotary and axial thrust bearing means rotatably supporting and axially locating said sleeve shaft on said walls; an input member having bearing means rotatably supporting said input member in said main housing transverse to said sleeve shaft; bevel gear means including a bevel gear
Claim 3 Continued on said sleeve shaft between said walls and a bevel gear on said input member having the apex on the side adjacent said end wall and providing bevel gear axial thrust on said sleeve shaft in one direction from said other wall toward said end wall; a cover housing secured to said main housing providing a torque converter housing chamber between said cover housing and end wall and having a fixed ground member extending into said torque converter housing chamber toward said end wall; a torque converter housing having one side wall rotatably and axially slidably mounted on said ground member and another side wall axially fixed and drive connected to said portion of said sleeve shaft to rotate with said sleeve shaft in said torque converter housing chamber and enclosing between said side walls a torque converter operating chamber; an output shaft rotatably mounted in said sleeve shaft; a turbine hub drive connected to said output shaft and located in said torque converter operating chamber adjacent said other side wall;
rotary bearing means mounting said turbine hub on said torque converter housing for relative rotation and to transmit axial thrust and torque converter means in said operating chamber including bladed pump means rotatably driven by said torque converter housing, bladed turbine means rotatably driving said turbine hub and bladed stator means mounted on said ground member to prevent reverse rotation operative when the pump means is driven to circulate fluid through the turbine means and stator means in a toroidal flow path providing a torque multiplication drive and a net torque converter axial thrust on said torque converter housing providing a torque converter thrust acting on said sleeve shaft in a direction opposite to said one direction of said bevel gear axial thrust to balance a substantial portion of said bevel gear and torque converter axial thrust during normal drive operation.
4. In a transmission; a main housing having a transverse end wall at one end of said housing and another transverse wall spaced from said end wall; each wall having a central aperture; a sleeve shaft located between said walls and having a portion extending through said aperture in said end wall and having rotary and axial thrust bearing means rotatably supporting and axially locating said sleeve shaft on said walls; an input member having bearing means rotatably supporting said input member in said main housing transverse to said sleeve shaft; bevel gear means including a bevel gear on said sleeve shaft between said walls and a bevel gear on said input member having the apex on the side adjacent said end wall and providing bevel gear axial thrust on said sleeve shaft in one direction from said other wall toward said end wall; a cover housing secured to said main housing providing a torque converter housing chamber between said cover housing and end wall and having a fixed ground member extending into said torque converter housing chamber toward said end wall; a torque converter housing having one side wall rotatably and axially slidably mounted on said ground member and another side wall axially fixed and drive connected to said portion of said sleeve shaft to rotate with said sleeve shaft in said torque converter housing chamber and enclosing between said side walls a torque converter operating chamber; an output shaft rotatably mounted in said sleeve shaft; a turbine hub drive connected to said output shaft and located in said torque converter oper-ating chamber adjacent said other side wall; rotary bearing means mounting said turbine hub and output shaft on said torque
rotary bearing means mounting said turbine hub on said torque converter housing for relative rotation and to transmit axial thrust and torque converter means in said operating chamber including bladed pump means rotatably driven by said torque converter housing, bladed turbine means rotatably driving said turbine hub and bladed stator means mounted on said ground member to prevent reverse rotation operative when the pump means is driven to circulate fluid through the turbine means and stator means in a toroidal flow path providing a torque multiplication drive and a net torque converter axial thrust on said torque converter housing providing a torque converter thrust acting on said sleeve shaft in a direction opposite to said one direction of said bevel gear axial thrust to balance a substantial portion of said bevel gear and torque converter axial thrust during normal drive operation.
4. In a transmission; a main housing having a transverse end wall at one end of said housing and another transverse wall spaced from said end wall; each wall having a central aperture; a sleeve shaft located between said walls and having a portion extending through said aperture in said end wall and having rotary and axial thrust bearing means rotatably supporting and axially locating said sleeve shaft on said walls; an input member having bearing means rotatably supporting said input member in said main housing transverse to said sleeve shaft; bevel gear means including a bevel gear on said sleeve shaft between said walls and a bevel gear on said input member having the apex on the side adjacent said end wall and providing bevel gear axial thrust on said sleeve shaft in one direction from said other wall toward said end wall; a cover housing secured to said main housing providing a torque converter housing chamber between said cover housing and end wall and having a fixed ground member extending into said torque converter housing chamber toward said end wall; a torque converter housing having one side wall rotatably and axially slidably mounted on said ground member and another side wall axially fixed and drive connected to said portion of said sleeve shaft to rotate with said sleeve shaft in said torque converter housing chamber and enclosing between said side walls a torque converter operating chamber; an output shaft rotatably mounted in said sleeve shaft; a turbine hub drive connected to said output shaft and located in said torque converter oper-ating chamber adjacent said other side wall; rotary bearing means mounting said turbine hub and output shaft on said torque
Claim 4 Continued converter housing for rotation of both said turbine hub and output shaft relative to said torque converter housing and to transmit thrust from said turbine hub to said torque converter housing to transmit axial thrust to said input sleeve shaft and torque converter means in said operating chamber including bladed pump means rotatably driven by said torque converter housing, bladed turbine means rotatably driving said turbine hub and bladed stator means mounted on said ground member to prevent reverse rotation operative when the pump means is driven to circulate fluid through the turbine means and stator means in a toroidal flow path providing a torque multiplication drive and a net torque converter axial thrust on said torque converter housing providing a torque converter thrust acting on said sleeve shaft in a direction opposite to said one direction of said bevel gear axial thrust to balance a substantial portion of said bevel gear and torque converter axial thrust during normal drive operation.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/551,833 US3953970A (en) | 1975-02-21 | 1975-02-21 | Torque converter transmission |
| CA245,694A CA1044986A (en) | 1975-02-21 | 1976-02-13 | Torque converter transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1055805A true CA1055805A (en) | 1979-06-05 |
Family
ID=25668206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA306,688A Expired CA1055805A (en) | 1975-02-21 | 1978-07-04 | Torque converter transmission |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1055805A (en) |
-
1978
- 1978-07-04 CA CA306,688A patent/CA1055805A/en not_active Expired
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