US5090371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Evaporative cooling system
Assignee: Volkswagen AG
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Filing: 1991-05-23
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Granted: 1992-02-25
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Expires: 2011-05-23
Abstract
Abstract The representative evaporative cooling system disclosed in the specification includes a cooling pump in a condensate line leading from a condenser to an internal combustion engine and a fan associated with the condenser, and has a turbine disposed in the coolant vapor line leading from the engine to the condenser which utilizes the energy of the coolant vapor to drive the coolant pump and the fan.
Inventors
- 👤 Herbert Schapertons
- 👤 Bodo Scheibner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:23
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/22; F01P5/00; F01P5/02; F01P5/04; F01P5/10; F01P5/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
80 words
An evaporative cooling system for an internal combustion engine comprising an engine coolant circuit including a condensate line, a coolant circulating pump, a condenser for condensing vaporized engine coolant having an associated cooling fan, a coolant vapor line leading to the condenser, and coolant vapor energy extraction means for utilizing energy from engine coolant vapor in the vapor line including a driveshaft extending in opposite directions from the extraction means for driving the coolant circulating pump and the condenser fan.
Claim 2
Dependent Claim
80 words
An evaporative cooling system for an internal combustion engine comprising an engine coolant circuit including a condensate line, a coolant circulating pump, a condenser for condensing vaporized engine coolant having an associated cooling fan, a coolant vapor line leading to the condenser, and coolant vapor energy extraction means for utilizing energy from engine coolant vapor in the vapor line including a driveshaft extending in opposite directions from the extraction means for driving the coolant circulating pump and the condenser fan.
Claim 3
Dependent Claim
43 words
An evaporative cooling system in accordance with claim 1 wherein the coolant vapor energy extraction means comprises a drive turbine disposed in the coolant vapor line which is drivingly connected at opposite ends to the coolant circulating pump and the condenser fan, respectively.
Claim 4
Dependent Claim
37 words
An evaporative cooling system in accordance with claim 1 including a heat exchanger associated with the vapor line and arranged to receive the exhaust gas of an internal combustion engine to the cooled by the cooling system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-02-24 | 1995-08-26 | 1996-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-02-24 | 1999-08-26 | 2000-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-02-24 | 2003-08-26 | 2004-02-25 | $7700.00 | Window Closed / Lapsed |