Patent US4938303A successfully refreshed from Google Patents.
US4938303A
Expired / Lapsed
US
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Cooling air circulation system in the front end of a motor vehicle
Assignee: Daimler Benz AG
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Filing: 1989-07-21
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Granted: 1990-07-03
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Expires: 2009-07-21
Abstract
Abstract The cooling air circulation system at the front end of a motor vehicle has several separate air ducts which are arranged one on top of the other and in which a water cooler and a supplementary cooler are position. Improved cooling is achieved by the cooling air of an upper and central air duct being conveyed to the water cooler, in front of which are mounted in the upper air duct only a condenser of an air-conditioning system and an electric fan, and by a lower air duct, in which the supplementary cooler is arranged, leading into an opening in front of the water cooler on the underside of the front end.
Inventors
- 👤 Hans Schaal
- 👤 Thomas Attinger
- 👤 Wolfgang Kleineberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:02
CPC Classifications
B; B60; B60K; B60K11/00; B60K11/02; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3227; B60K11/08; B60L; B60L8/00; B60L8/006; F; F01; F01P; F01P11/00; F01P11/10; F01P2060/00; F01P2060/02; F01P2060/04; F01P2060/08; Y; Y02; Y02T; Y02T10/00; Y02T10/60; Y02T10/7072; Y10; Y10S; Y10S180/00; Y10S180/903
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
193 words
A cooling air circulation system at a front end of a motor vehicle having a water cooled internal combustion engine, a water cooler, and a supplemental cooler comprising: an upper duct sealed at its sides and extending from upper inlet openings at a wall of the front end to an upper section of the water cooler; a condenser of an air conditioning system positioned in front of the upper section of the water cooler and an electric fan positioned in front of the condensor arranged in the upper duct; a fan cowl of the fan extending to the water cooler and tightly enclosing the fan and condenser; a central duct sealed at its sides and extending from central inlet opening at the wall of the front end to a lower section of the water cooler, cooling air of the central duct flowing exclusively through the lower section of the water cooler; and a lower duct sealed at its sides and extending from lower inlet opening to an outlet opening which lies in front of the water cooler at an underside of the front end, the supplemental cooler being arranged in the lower duct.
Claim 2
Dependent Claim
193 words
A cooling air circulation system at a front end of a motor vehicle having a water cooled internal combustion engine, a water cooler, and a supplemental cooler comprising: an upper duct sealed at its sides and extending from upper inlet openings at a wall of the front end to an upper section of the water cooler; a condenser of an air conditioning system positioned in front of the upper section of the water cooler and an electric fan positioned in front of the condensor arranged in the upper duct; a fan cowl of the fan extending to the water cooler and tightly enclosing the fan and condenser; a central duct sealed at its sides and extending from central inlet opening at the wall of the front end to a lower section of the water cooler, cooling air of the central duct flowing exclusively through the lower section of the water cooler; and a lower duct sealed at its sides and extending from lower inlet opening to an outlet opening which lies in front of the water cooler at an underside of the front end, the supplemental cooler being arranged in the lower duct.
Claim 3
Dependent Claim
25 words
A cooling air system according to claim 1, wherein the supplemental cooler is at least one of a motor oil cooler and a charge cooler.
Claim 4
Dependent Claim
35 words
A cooling air circulation system according to claim 1, wherein a fan is arranged downstream of the water cooler, which is driven by the internal combustion engine and which acts upon the entire water cooler.
Claim 5
Dependent Claim
41 words
A cooling air circulation system according to claim 1, wherein the upper inlet openings of the upper air duct lie above a bumper and the central and lower inlet openings of the central and lower air ducts lie below a bumper.
Claim 6
Dependent Claim
25 words
A cooling air circulation system according to claim 1, wherein a front edge of the outlet opening of the lower air duct is a spoiler.
References Cited (Backward Citations)
US3933136A
Cited
DE3150152A1
Cited
GB2117721A
Cited
DE3338466A1
Cited
US4566407A
Cited
US4702079A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-07-02 | 1994-01-01 | 1994-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-07-02 | 1998-01-01 | 1998-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-07-02 | 2002-01-01 | 2002-07-03 | $7700.00 | Window Closed / Lapsed |