US5943918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powertrain system for a hybrid electric vehicle
Assignee: FCA US LLC
•
Filing: 1997-12-01
•
Granted: 1999-08-31
•
Expires: 2017-12-01
Abstract
Abstract A hybrid electric powertrain system is provided including an electric motor/generator drivingly engaged with the drive shaft of a transmission. The electric is utilized for synchronizing the rotation of the drive shaft with the driven shaft during gear shift operations. In addition, a mild hybrid concept is provided which utilizes a smaller electric motor than typical hybrid powertrain systems. Because the electric motor is drivingly engaged with the drive shaft of the transmission, the electric motor/generator is driven at high speed even when the vehicle speed is low so that the electric motor/generator provides more efficient regeneration.
Inventors
- 👤 Richard G. Reed, Jr.
- 👤 Evan S. Boberg
- 👤 Robert E. Lawrie
- 👤 Francois J. Castaing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:22
CPC Classifications
B; B60; B60W; B60W20/00; B60W20/30; B60K; B60K6/00; B60K6/20; B60K6/22; B60K6/36; B60K6/42; B60K6/48; B60W10/00; B60W10/02; B60W10/04; B60W10/06; B60W10/08; B60W10/10; F; F16; F16H; F16H61/00; F16H61/04; F16H61/0403; F16H63/00; F16H63/02; F16H63/30; F16H63/34; F16H63/3416; B60K2006/4833; F16H2061/0422; F16H3/00; F16H3/02; F16H3/08; F16H3/12; F16H3/126; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y10; Y10S; Y10S903/00; Y10S903/902; Y10S903/903; Y10S903/904; Y10S903/909; Y10S903/945; Y10S903/946; Y10T; Y10T74/00; Y10T74/19; Y10T74/19014
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
A hybrid powertrain system, comprising: an internal combustion engine having an engine output shaft; a transmission including a transmission drive shaft coupled to said internal combustion engine by a friction clutch mechanism, said transmission further including a transmission driven shaft selectively driven at a plurality of gear ratios relative to said transmission drive shaft; and an electric motor/generator drivingly engaged with said transmission drive shaft, said electric motor/generator is utilized to synchronize rotation of said transmission drive shaft with said transmission driven shaft during shifting of said transmission between said gear ratios.
Claim 2
Dependent Claim
92 words
A hybrid powertrain system, comprising: an internal combustion engine having an engine output shaft; a transmission including a transmission drive shaft coupled to said internal combustion engine by a friction clutch mechanism, said transmission further including a transmission driven shaft selectively driven at a plurality of gear ratios relative to said transmission drive shaft; and an electric motor/generator drivingly engaged with said transmission drive shaft, said electric motor/generator is utilized to synchronize rotation of said transmission drive shaft with said transmission driven shaft during shifting of said transmission between said gear ratios.
Claim 3
Dependent Claim
26 words
The hybrid powertrain system according to claim 1, further comprising an electro mechanical clutch actuator connected to said clutch mechanism for operatively controlling said clutch mechanism.
Claim 4
Dependent Claim
18 words
The hybrid powertrain system according to claim 2, wherein said electro-mechanical clutch actuator includes an assist spring assembly.
Claim 5
Dependent Claim
25 words
The hybrid powertrain system according to claim 2, wherein said electro-mechanical clutch actuator includes a mechanical wear compensator assembly for compensating for clutch disk wear.
Claim 6
Dependent Claim
29 words
The hybrid powertrain system according to claim 1, further comprising a parking gear mounted to said driven shaft, said parking gear being engageable by an electro-mechanically actuated parking sprag.
Claim 7
Dependent Claim
23 words
The hybrid powertrain system according to claim 1, wherein said electric motor/generator is connected to said transmission drive shaft by a gear train.
References Cited (Backward Citations)
US2960200A
Cited
US3001618A
Cited
US3211249A
Cited
US3478851A
Cited
US4400997A
Cited
US4405029A
Cited
US4410071A
Cited
US4651852A
Cited
US4648290A
Cited
US4765450A
Cited
US4981202A
Cited
US5081583A
Cited
US4873881A
Cited
US5322150A
Cited
US5489012A
Cited
US5337848A
Cited
US5267635A
Cited
US5562565A
Cited
US5526909A
Cited
US5357822A
Cited
US5755302A
Cited
US5560249A
Cited
US5578911A
Cited
US5562566A
Cited
US5605211A
Cited
US5713425A
Cited
US5669842A
Cited
US5743143A
Cited
US5816100A
Cited
US5730676A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-30 | 2003-03-01 | 2003-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-30 | 2007-03-01 | 2007-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-30 | 2011-03-01 | 2011-08-31 | $7700.00 | Window Closed / Lapsed |