US5469820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Auxiliary power unit for a hybrid electrical vehicle
Assignee: Cummins Powergen IP Inc
•
Filing: 1995-01-20
•
Granted: 1995-11-28
•
Expires: 2015-01-20
Abstract
Abstract An auxiliary power system includes an engine balance system, an integrated alternator/starter, a thermal management system, noise-vibration-harshness control system, an emissions/fuel economy system, an APU master control unit, and a vehicle control system.
Inventors
- 👤 Stanley E. Data
- 👤 Robert P. Koziara
- 👤 Mark S. Lent
- 👤 Patrick A. O'Gorman
- 👤 Thomas K. Rose
- 👤 Eugene G. Shanks
- 👤 Daniel A. Norrick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:31
CPC Classifications
B; B60; B60K; B60K6/00; B60K6/20; B60K6/42; B60K6/48; B60K6/485; B60L; B60L50/00; B60L50/10; B60L50/15; F; F01; F01P; F01P3/00; F01P3/20; F02; F02B; F02B63/00; F02B63/04; F02B75/00; F02B75/16; F02B75/18; F02B75/20; F02N; F02N11/00; F02N11/04; F16; F16F; F16F15/00; F16F15/22; F16F15/26; F16F15/264; H; H02; H02K; H02K27/00; H02K5/00; H02K5/04; H02K5/20; H02K5/203; H02K7/00; H02K7/18; H02K7/1807; H02K7/1815; B60K1/00; B60K2001/003; F01P2003/006; F01P2003/008; F01P2050/00; F01P2050/24; F01P2060/00; F01P2060/08; F01P3/06; F01P3/08; F02B75/02; F02B2075/022; F02B2075/027; F02B2075/1804; F02B2075/1812; H02K7/14; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/62; Y02T10/64; Y02T10/7072
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
65 words
An auxiliary power unit for a hybrid electric vehicle, comprising: a combustion engine driving a crankshaft; a balance shaft interconnected to the crankshaft by gear means for causing the balance shaft to rotate in a direction opposite to that of the crankshaft; an alternator/starter mounted on an end of the balance shaft; and wherein a net angular momentum of the auxiliary power unit is zero.
Claim 2
Dependent Claim
65 words
An auxiliary power unit for a hybrid electric vehicle, comprising: a combustion engine driving a crankshaft; a balance shaft interconnected to the crankshaft by gear means for causing the balance shaft to rotate in a direction opposite to that of the crankshaft; an alternator/starter mounted on an end of the balance shaft; and wherein a net angular momentum of the auxiliary power unit is zero.
Claim 3
Dependent Claim
19 words
An auxiliary power unit in accordance with claim 1, wherein the alternator/starter is taper fit to the balance shaft.
Claim 4
Dependent Claim
18 words
An auxiliary power unit in accordance with claim 1, wherein the gear means includes a planetary gear assembly.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |