Patent US6158218A successfully refreshed from Google Patents.
US6158218A
Expired / Lapsed
US
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Superchargeable internal combustion engine with cylinder cut-off
Assignee: Mercedes Benz Group AG
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Filing: 1999-07-12
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Granted: 2000-12-12
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Expires: 2019-07-12
Abstract
Abstract A superchargeable internal combustion engine with cylinder cut-off has a first cylinder group which operates over the entire operating range of the internal combustion engine. A second cylinder group is cut off or connected up as a function of demand. The engine's response dynamics when the second cylinder group is connected up by providing an exhaust-gas turbocharger which is used exclusively for supercharging the first cylinder group. A mechanical supercharger is provided which is used exclusively for supercharging the second cylinder group.
Inventors
- 👤 Armin Herold
- 👤 Peter Luckert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:46
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/04; F02B33/00; F02B33/32; F02B33/34; F02B33/36; F02D; F02D17/00; F02D17/02; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
69 words
A superchargeable internal combustion engine with cylinder cut-off, comprising a first cylinder group which operates over an entire operating range of the internal combustion engine, a second cylinder group which is cut off or connected up as a function of demand, an exhaust-gas turbocharger which is operatively arranged exclusively for supercharging the first cylinder group, and a mechanical supercharger is operatively arranged exclusively for supercharging the second cylinder group.
Claim 2
Dependent Claim
69 words
A superchargeable internal combustion engine with cylinder cut-off, comprising a first cylinder group which operates over an entire operating range of the internal combustion engine, a second cylinder group which is cut off or connected up as a function of demand, an exhaust-gas turbocharger which is operatively arranged exclusively for supercharging the first cylinder group, and a mechanical supercharger is operatively arranged exclusively for supercharging the second cylinder group.
Claim 3
Dependent Claim
39 words
The internal combustion engine according to claim 1, wherein the mechanical supercharger is disconnectably couplable to a drive train of the internal combustion engine which is arranged to be driven even when the second cylinder group is cut off.
Claim 4
Dependent Claim
22 words
The internal combustion engine according to claim 2, wherein the mechanical supercharger is couplable to the drive train by a switchable clutch.
Claim 5
Dependent Claim
38 words
The internal combustion engine according to claim 1, wherein the first cylinder group has a first charging-air feed and a first exhaust-gas discharge, and the second cylinder group has a second charging-air feed and a second exhaust-gas discharge.
Claim 6
Dependent Claim
39 words
The internal combustion engine according to claim 4, wherein the mechanical supercharger is disconnectably couplable to a drive train of the internal combustion engine which is arranged to be driven even when the second cylinder group is cut off.
Claim 7
Dependent Claim
22 words
The internal combustion engine according to claim 5, wherein the mechanical supercharger is couplable to the drive train by a switchable clutch.
Claim 8
Dependent Claim
39 words
The internal combustion engine according to claim 5, wherein the mechanical supercharger is disconnectably couplable to a drive train of the internal combustion engine which is arranged to be driven even when the second cylinder group is cut off.
Claim 9
Dependent Claim
22 words
The internal combustion engine according to claim 7, wherein the mechanical supercharger is couplable to the drive train by a switchable clutch.
Claim 10
Dependent Claim
41 words
The internal combustion engine according to claim 1, wherein the internal combustion engine has cylinders arranged in two rows, a first row of the cylinders containing the first cylinder group, and a second row of cylinders containing the second cylinder group.
Claim 11
Dependent Claim
38 words
The internal combustion engine according to claim 9, wherein the first cylinder group has a first charging-air feed and a first exhaust-gas discharge, and the second cylinder group has a second charging-air feed and a second exhaust-gas discharge.
Claim 12
Dependent Claim
26 words
The internal combustion engine according to claim 1, wherein the exhaust-gas turbocharger is dimensioned with respect to a total swept volume of the first cylinder group.
Claim 13
Dependent Claim
26 words
The internal combustion engine according to claim 1, wherein the mechanical supercharger is dimensioned with respect to a total swept volume of the second cylinder group.
Claim 14
Dependent Claim
26 words
The internal combustion engine according to claim 12, wherein the exhaust-gas turbocharger is dimensioned with respect to a total swept volume of the first cylinder group.
Claim 15
Dependent Claim
38 words
The internal combustion engine according to claim 13, the mechanical supercharger is disconnectably couplable to a drive train of the internal combustion engine which is arranged to be driven even when the second cylinder group is cut off.
Claim 16
Dependent Claim
22 words
The internal combustion engine according to claim 14, wherein the mechanical supercharger is couplable to the drive train by a switchable clutch.
Claim 17
Dependent Claim
38 words
The internal combustion engine according to claim 15, wherein the first cylinder group has a first charging-air feed and a first exhaust-gas discharge, and the second cylinder group has a second charging-air feed and a second exhaust-gas discharge.
Claim 18
Dependent Claim
41 words
The internal combustion engine according to claim 16, wherein the internal combustion engine has cylinders arranged in two rows, a first row of the cylinders containing the first cylinder group, and a second row of cylinders containing the second cylinder group.
References Cited (Backward Citations)
DE3309434C1
Cited
DE3633405A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-12-12 | 2004-06-12 | 2004-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-12-12 | 2008-06-12 | 2008-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-12-12 | 2012-06-12 | 2012-12-12 | $7700.00 | Window Closed / Lapsed |