US6782849B2
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for an internal combustion engine
Assignee: AVL List GmbH
•
Filing: 2002-11-21
•
Granted: 2004-08-31
•
Expires: 2022-11-21
Abstract
Abstract A cooling system for an internal combustion engine with two-stage supercharging includes a charge-air line in which is provided a first compressor of a first turbocharger and a second compressor of a second turbocharger downstream of the former, a first charge-air cooler being provided between first and second compressor, and a second charge-air cooler downstream of the second compressor. At least one of the two charge-air coolers is disposed upstream of the coolant cooler as seen in a flow direction of the cooling air, and the second charge-air cooler is disposed above or beside the first charge-air cooler.
Inventors
- 👤 Robert Roithinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:59
CPC Classifications
F; F02; F02B; F02B29/00; F02B29/04; F02B29/045; F02B29/0475; F01; F01P; F01P3/00; F01P3/18; F02B29/0406; F02B29/0412; F02B29/0425; F02B29/0431; B; B60; B60K; B60K11/00; B60K11/02; F01P2003/182; F01P2003/185; F01P2003/187; F01P2060/00; F01P2060/02; F02B37/00; F02B37/013; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
96 words
Cooling system for an internal combustion engine with two-stage supercharging, including a charge-air line in which is provided a first compressor of a first turbocharger and a second compressor of a second turbocharger downstream thereof, a first charge-air cooler being provided between said first and second compressors, and a second charge-air cooler downstream of the second compressor, wherein at least one of the two charge-air coolers is disposed upstream of the coolant cooler in a flow direction of the cooling air, and the second charge-air cooler is disposed immediately above or beside the first charge-air cooler.
Claim 2
Dependent Claim
96 words
Cooling system for an internal combustion engine with two-stage supercharging, including a charge-air line in which is provided a first compressor of a first turbocharger and a second compressor of a second turbocharger downstream thereof, a first charge-air cooler being provided between said first and second compressors, and a second charge-air cooler downstream of the second compressor, wherein at least one of the two charge-air coolers is disposed upstream of the coolant cooler in a flow direction of the cooling air, and the second charge-air cooler is disposed immediately above or beside the first charge-air cooler.
Claim 3
Dependent Claim
50 words
Cooling system according to claim 1 , wherein an inlet and an outlet of at least one charge-air cooler are provided on one and the same side relative to a vertical plane extending through a center of gravity of the charge-air cooler in the flow direction of the cooling air.
Claim 4
Dependent Claim
30 words
Cooling system according to claim 2 , wherein the inlet and outlet of the first charge-air cooler are provided on one and the same side relative to the vertical plane.
Claim 5
Dependent Claim
54 words
Cooling system according to claim 1 , wherein at least one charge-air cooler is provided with a separating wall through the center of gravity, which acts as a partition between incoming and outgoing charge-air streams, so that an essentially U-shaped flow path is obtained for the charge air flowing through the charge air cooler.
Claim 6
Dependent Claim
23 words
Cooling system according to claim 4 , wherein the first charge-air cooler is provided with the separating wall through the center of gravity.
Claim 7
Dependent Claim
27 words
Cooling system according to claim 1 , wherein a cooling assembly comprising first and second charge-air coolers and the coolant cooler is rigidly attached to the engine.
Claim 8
Dependent Claim
18 words
Cooling system according to claim 6 , wherein the cooling assembly is rigidly attached to the vehicle frame.
Claim 9
Dependent Claim
32 words
Cooling system according to claim 1 , wherein flexible hose elements are provided in the charge-air line between first compressor, first charge-air cooler, second compressor, second charge-air cooler, and an intake manifold.
Claim 10
Dependent Claim
17 words
Cooling system according to claim 1 , wherein the second turbocharger is bypassed in a controlled manner.
Claim 11
Dependent Claim
17 words
Cooling system according to claim 9 , wherein the second turbocharger is bypassed at the exhaust end.
Claim 12
Dependent Claim
26 words
Cooling system according to claim 1 , including a fan for generation of a cooling air stream, wherein the fan is driven by a switchable coupling.
Claim 13
Dependent Claim
15 words
Cooling system according to claim 11 , wherein the fan in an axial-flow type fan.
Claim 14
Dependent Claim
16 words
Cooling system according to claim 11 , wherein the switchable coupling is provided with a visco-thermoelement.
Claim 15
Dependent Claim
25 words
Cooling system according to claim 11 , wherein the coupling is controlled externally via at least one cooling-air temperature sensor and an electronic control unit.
Claim 16
Dependent Claim
20 words
Cooling system according to claim 1 , wherein said second charge-air cooler is in contact with said first charge-air cooler.
Claim 17
Dependent Claim
19 words
Cooling system according to claim 15 , wherein said second charge-air cooler is positioned above said first charge-air cooler.
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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) | 2007-08-31 | 2008-03-01 | 2008-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2011-08-31 | 2012-03-01 | 2012-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2015-08-31 | 2016-03-01 | 2016-08-31 | $7700.00 | Window Closed / Lapsed |