Patent US6202776B1 successfully refreshed from Google Patents.
US6202776B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drive system, especially for a motor vehicle, and method of operating same
Assignee: Gruendl und Hoffmann GmbH Gesellschaft fuer Elektrotechnische Entwicklungen
•
Filing: 1998-02-27
•
Granted: 2001-03-20
•
Expires: 2018-02-27
Abstract
Abstract The invention concerns a drive system, especially for a motor vehicle, with a drive assembly, especially an internal combustion engine; an electric machine that is directly coupled or can be coupled to the drive shaft of the drive assembly, being designed such that it can start the drive assembly by merging in from standstill; and an automatic start-stop control of the drive assembly. The invention is also addressed to a method for operating such a drive system.
Inventors
- 👤 Ullrich Masberg
- 👤 Thomas Pels
- 👤 Klaus-Peter Zeyen
- 👤 Andreas Gründl
- 👤 Bernhard Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:01
CPC Classifications
F; F02; F02N; F02N11/00; F02N11/04; B; B60; B60L; B60L1/00; B60L1/003; B60L15/00; B60L15/20; F02B; F02B67/00; F02B67/04; F02N11/08; F02N11/0814; F02N11/0818; F02N11/0862; F02N11/0866; B60L2200/00; B60L2200/26; B60L2210/00; B60L2210/10; B60L2210/40; B60L2240/00; B60L2240/10; B60L2240/34; B60L2240/40; B60L2240/42; B60L2240/421; B60L2240/423; B60L2240/44; B60L2240/441; B60L2240/443; B60L2270/00; B60L2270/10; B60L2270/14; B60L2270/145; B60W; B60W2510/00; B60W2510/06; B60W2510/0657; F02D; F02D2250/00; F02D2250/18; F02D2250/24; F02D41/00; F02D41/008; F02D41/0087; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40; Y02T10/60; Y02T10/64; Y02T10/72
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
205 words
A drive system, in particular for a motor vehicle, comprising: a drive system in the form of a combustion engine ( 1 ); an electrical machine ( 4 ) that is or can be coupled with a drive shaft ( 10 ) of the drive system which rotates with the same number of revolutions as the drive shaft ( 10 ) and arranged in such a way that by running together, the drive system can be started from the idle state; at least one inverter ( 17 ) which produces the voltages and/or currents with variable frequency, amplitude and/or phase required for the magnetic fields of the electrical machine ( 4 ); wherein the inverter ( 17 ) has an intermediate circuit on a voltage level higher than that of the on-board electrical system, and in said on-board electrical system, a power storage device ( 11 ) is provided for storage of electric energy; and wherein on the higher voltage level of the intermediate circuit, another power storage device ( 19 , 24 ) is provided for storage of electric energy, and with an automatic start-stop control system within the scope of which the drive system is controlled by the electrical machine ( 4 ).
Claim 2
Dependent Claim
205 words
A drive system, in particular for a motor vehicle, comprising: a drive system in the form of a combustion engine ( 1 ); an electrical machine ( 4 ) that is or can be coupled with a drive shaft ( 10 ) of the drive system which rotates with the same number of revolutions as the drive shaft ( 10 ) and arranged in such a way that by running together, the drive system can be started from the idle state; at least one inverter ( 17 ) which produces the voltages and/or currents with variable frequency, amplitude and/or phase required for the magnetic fields of the electrical machine ( 4 ); wherein the inverter ( 17 ) has an intermediate circuit on a voltage level higher than that of the on-board electrical system, and in said on-board electrical system, a power storage device ( 11 ) is provided for storage of electric energy; and wherein on the higher voltage level of the intermediate circuit, another power storage device ( 19 , 24 ) is provided for storage of electric energy, and with an automatic start-stop control system within the scope of which the drive system is controlled by the electrical machine ( 4 ).
Claim 3
Dependent Claim
33 words
A drive system according to claim 1 wherein the rotor ( 9 ) of the electrical machine ( 4 ) is located on the drive shaft ( 10 ) or an extension thereof.
Claim 4
Dependent Claim
66 words
A drive system according to claim 1 wherein the start-stop control system automatically stops the drive system in the presence of a stopping condition, such stopping condition in particular being based on one or more of the following individual conditions: zero load, overrun, drive system idling, motor vehicle idle, drive system uncoupled, no gear selected, service or manual braking system activated, actuation of a stop switch.
Claim 5
Dependent Claim
81 words
A drive system according to claim 1 wherein the start-stop control system automatically starts the drive system with the help of the electrical machine ( 4 ) in the presence of a starting condition, such starting condition in particular being based on one or more of the following individual conditions: actuation of the accelerator pedal, deactivation of the service or manual brake, actuation of the clutch, touching or moving a stick shift, selection of a gear, actuation of a starting switch.
Claim 6
Dependent Claim
31 words
A drive system according to claim 1 wherein the electrical machine ( 4 ) has a driving effect at least essentially until the idling rpm of the drive system is reached.
Claim 7
Dependent Claim
25 words
A drive system according to claim 1 wherein the electrical machine acts as an electrical brake in the case of drive system stop in overrun.
Claim 8
Dependent Claim
23 words
A drive system according to claim 1 wherein the electrical machine ( 4 ) furthermore has the function of actively reducing rotational fluctuations.
Claim 9
Dependent Claim
66 words
A drive according to claim 7 wherein the electrical machine ( 4 ) is controlled in such a way as to produce a rapidly alternating torque, i.e. by decelerating in the case of positive rotational fluctuation and by accelerating in the case of a negative rotational fluctuation and/or produces a positive or negative, respectively, constant torque to achieve an accelerating or decelerating or rheostatic braking effect.
Claim 10
Dependent Claim
64 words
A drive system according to claim 7 wherein the energy gained upon reduction of a positive rotational fluctuation, i.e. braking energy due to rotational fluctuation, and/or any energy gained in the case of a decelerating additional torque, i.e. braking energy due to additional torque, is at least partially stored and at least partially reused, if necessary, in the reduction of a negative rotational fluctuation.
Claim 11
Dependent Claim
23 words
A drive system according to claim 1 wherein the electrical machine ( 4 ) has the additional function of a power supply generator.
Claim 12
Dependent Claim
48 words
A drive system according to claim 1 wherein the electrical machine ( 4 ) can trigger or support acceleration and/or deceleration of the drive shaft ( 10 ), in particular to accelerate or decelerate, respectively, a motor vehicle and/or reduce the slip f a drive wheel by deceleration.
Claim 13
Dependent Claim
30 words
A drive system according to claim 1 wherein the electrical machine ( 4 ) has a torque density, compared with the maximum torque, in excess of 0.01 NM/cm 3 .
Claim 14
Dependent Claim
32 words
A drive system according to claim 1 wherein the inverter ( 17 ) has electronic switches ( 43 , 47 , 50 ) that are fluid-cooled, in particular boiling bath-cooled 1 .
Claim 15
Dependent Claim
37 words
A drive system according to claim 1 wherein the electrical machine ( 4 ) acts as an electromagnetic clutch in the drive train ( 2 ) and/or as an active transmission synchronization device or as part thereof.
References Cited (Backward Citations)
DE282671C
Cited
DE893299C
Cited
DE874713C
Cited
DE904737C
Cited
US2654849A
Cited
DE938680C
Cited
US2790917A
Cited
DE1077072B
Cited
DE1165422B
Cited
DE1156319B
Cited
DE1284853B
Cited
US3774303A
Cited
AU5840173A
Cited
DE2345018A1
Cited
DE2353724B2
Cited
US3870116A
Cited
US3974396A
Cited
US3902073A
Cited
US4066936A
Cited
US4025860A
Cited
DE2704533A1
Cited
DE2855886A1
Cited
DE2902376C2
Cited
DE2823225A1
Cited
GB2042772B
Cited
DE2917139A1
Cited
US4346773A
Cited
DE2943563A1
Cited
DE3009503A1
Cited
DE3013424A1
Cited
DE3050269A1
Cited
FR2481656B3
Cited
DE3048972C2
Cited
JPS58126434A
Cited
DE3230121A1
Cited
DE3230607A1
Cited
DE3243513A1
Cited
DE3243514C2
Cited
DE3343018C2
Cited
DE3335923A1
Cited
JPS59184020A
Cited
DE3338548A1
Cited
EP0151935A1
Cited
FR2563280B1
Cited
EP0175952A2
Cited
US4699097A
Cited
JPS6166820A
Cited
DE3537994A1
Cited
US4942950A
Cited
JPS61200333A
Cited
JPS62166749A
Cited
EP0233738A1
Cited
US4797602A
Cited
US4825139A
Cited
US4803376A
Cited
DE3737192A1
Cited
US5053632A
Cited
DE3814484A1
Cited
US4958095A
Cited
DE3812296A1
Cited
DE3743289A1
Cited
US5175439A
Cited
EP0338485A2
Cited
US4883973A
Cited
EP0354790A2
Cited
DE3937082A1
Cited
EP0385311A2
Cited
DE3926054A1
Cited
DE4027664A1
Cited
US5125236A
Cited
DE3939695C1
Cited
DE4038301A1
Cited
DE4000678A1
Cited
US5109815A
Cited
DE4100937A1
Cited
DE4011291A1
Cited
US5323743A
Cited
DE4134268A1
Cited
US5126641A
Cited
DE4213132A1
Cited
DE4124496A1
Cited
DE4202737A1
Cited
US5303794A
Cited
DE4202083A1
Cited
DE4391898C2
Cited
DE4225683A1
Cited
DE4230510C1
Cited
DE4330193A1
Cited
DE4412945A1
Cited
DE4339252A1
Cited
DE4344053A1
Cited
US5325042A
Cited
DE4318949C1
Cited
DE4311697A1
Cited
DE4314290A1
Cited
DE4323601A1
Cited
DE4323602A1
Cited
US5359308A
Cited
DE4437322A1
Cited
DE4402152C1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2004-03-19 | 2004-09-18 | 2005-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-03-19 | 2008-09-18 | 2009-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-03-19 | 2012-09-18 | 2013-03-20 | $7700.00 | Window Closed / Lapsed |