Patent EP0038538A2 successfully refreshed from Google Patents.
EP0038538A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Four speed ratio transverse automatic transmission
Assignee: Ford-Werke GmbH
•
Filing: 1981-04-16
•
Granted: —
•
Expires: 2001-04-16
Abstract
Abstract An automatic transaxle for use in an automotive vehicle driveline for-delivering torque from an engine to the vehicle traction wheels comprising two simple planetary gearsets (138 and 140) adapted to provide four forward driving ratios and a single reverse ratio and including three friction clutches (88, 184 and 186), three friction brakes (136,178 and 164) and one overrunning clutch (186) that are strategically arranged to provide optimum spacing between the ratios and smooth ratio changes with minimum shift timing problems for the ratio changes.
Inventors
- 👤 Stanley L. Pierce
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 09:48
CPC Classifications
F; F16; F16H; F16H3/00; F16H3/44; F16H3/62; F16H3/66; B; B60; B60K; B60K17/00; B60K17/04; B60K17/06; B60K17/08; F16H2200/00; F16H2200/003; F16H2200/0043
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
382 words
In a power transmission mechanism for an automotive vehicle having an transversely arranged engine and front- traction wheels, a hydrokinetic unit having an impeller and a turbine mounted on a first axis, said impeller being connected to said engine ; planetary gearing mounted on a second axis that is spaced laterally from said first axis, a torque input shaft for said gearing ; torque transfer means drivably connecting said turbine and said input shaft, characterized in that, said gearing comprising a pair of simple planetary gear units (138 and 140), each gear unit having a sun gear (142 resp. 152), a ring gear (144 resp. 150), a carrier (148 resp. 154) and planet pinions (146 resp. 1 * 56) on said carrier (148 resp. 154) engaging said sun and ring gears, a torque output shaft (190) connected to the carrier of a first of said gear units, a pair of drive shafts (192 resp. 264) for the traction wheels, one drive shaft (192) extending through said gearing and the other (264) extending in the opposite direction, final drive gearing (244) including a differential gear assembly (252) connecting said torque output shaft (190) with said drive shafts (192 resp. 264), a first friction clutch means (88) and an overrunning coupling (226) in series relationship adapted to connect said input shaft (124) to -the sun gear (142) of the first of said gear units (138), the ring gear (144) of said first gear unit (138) being connected to the carrier (154) of said second gear unit (140) ; first brake means (136) for braking the sun gear (142) of said first gear unit (138) during overdrive operation ; second brake means (178) for braking the carrier (148) of said first gear unit (138) during reverse drive, the ring gear (150) of said second gear unit (140) being connected to the carrier (148) of said first gear unit (138) ; third brake means (164) for braking the sun gear (152) of said second gear unit (140) during first and second underdrive operation ; second friction clutch means (184) for connecting said input shaft (124) to the carrier (148) of said first gear unit (138) during third direct drive operation, and during overdrive and third friction clutch means- (186) in parallel with said overrunning coupling (226).
Claim 2
Dependent Claim
382 words
In a power transmission mechanism for an automotive vehicle having an transversely arranged engine and front- traction wheels, a hydrokinetic unit having an impeller and a turbine mounted on a first axis, said impeller being connected to said engine ; planetary gearing mounted on a second axis that is spaced laterally from said first axis, a torque input shaft for said gearing ; torque transfer means drivably connecting said turbine and said input shaft, characterized in that, said gearing comprising a pair of simple planetary gear units (138 and 140), each gear unit having a sun gear (142 resp. 152), a ring gear (144 resp. 150), a carrier (148 resp. 154) and planet pinions (146 resp. 1 * 56) on said carrier (148 resp. 154) engaging said sun and ring gears, a torque output shaft (190) connected to the carrier of a first of said gear units, a pair of drive shafts (192 resp. 264) for the traction wheels, one drive shaft (192) extending through said gearing and the other (264) extending in the opposite direction, final drive gearing (244) including a differential gear assembly (252) connecting said torque output shaft (190) with said drive shafts (192 resp. 264), a first friction clutch means (88) and an overrunning coupling (226) in series relationship adapted to connect said input shaft (124) to -the sun gear (142) of the first of said gear units (138), the ring gear (144) of said first gear unit (138) being connected to the carrier (154) of said second gear unit (140) ; first brake means (136) for braking the sun gear (142) of said first gear unit (138) during overdrive operation ; second brake means (178) for braking the carrier (148) of said first gear unit (138) during reverse drive, the ring gear (150) of said second gear unit (140) being connected to the carrier (148) of said first gear unit (138) ; third brake means (164) for braking the sun gear (152) of said second gear unit (140) during first and second underdrive operation ; second friction clutch means (184) for connecting said input shaft (124) to the carrier (148) of said first gear unit (138) during third direct drive operation, and during overdrive and third friction clutch means- (186) in parallel with said overrunning coupling (226).
Claim 3
Dependent Claim
53 words
The power transmission mechanism set forth in Claim 1, chracterized in that, said torque transfer means comprises a first sprocket (62) connected to the turbine (24) of said hydrokinetic unit (14), a second sprocket (112) connected to said input shaft (124) and a drive chain (114) drivably connecting said sprockets (62 and 112).
Claim 4
Dependent Claim
47 words
3: The combination as set forth in Claim 1, characterized in that, said differential gear assembly (252), said gear units (138, 140 and 144) and said second sprocket (112) are mounted about said second axis, said engine and hydrokinetic unit (14) being mounted about said first axis.
Claim 5
Dependent Claim
39 words
The combination as set forth in Claim 1, characterized in that a converter lock up clutch (16) is arranged in a distance to the hydrokinetic unit (14).. and located adjacent the first sprocket (62) of the torque transfer means(114).
Claim 6
Dependent Claim
84 words
The combination as set forth in Claim 1, characterized in that, said final drive gearing (244) includes a sun gear (242) connected to the carrier (154) of said second gear unit (140), a carrier (248) connected to the torque input element (252) of said differential gear assembly, a ring gear (246) fixed to a stationary housing portion of said mechanism, and planet pinions (250) on the carrier (278) of said final drive gearing (244) engaging the sun and ring gears (242 and 246) thereof.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
Maintenance schedule is calculated for granted US utility patents.