Patent US4024848A successfully refreshed from Google Patents.
US4024848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for preventing water from entering a fuel system of an internal combustion engine
Assignee: Volkswagen AG
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Filing: 1975-04-28
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Granted: 1977-05-24
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Expires: 1995-04-28
Abstract
Abstract An internal combustion engine operated with a gasoline-methanol mixture as fuel comprises a fuel system, a water-absorbing filter and a ventilating line passing through the filter. When moisturized air is flowing through the ventilating line, the filter removes the moisture so that the fuel system is ventilated with dry air.
Inventors
- 👤 Wenpo Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:25
CPC Classifications
B; B60; B60K; B60K15/00; B60K15/03; B60K15/035; B60K15/03504
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
64 words
In an internal combustion engine operated with a gasoline-methanol mixture as fuel and including a fuel system for supplying the fuel to the internal combustion engine; tje improvement comprising a water-absorbing filter and a ventilating line connected to the fuel system and passing through the filter, whereby moisture in the ventilating line is removed so that the fuel system is ventilated with dry air.
Claim 2
Dependent Claim
64 words
In an internal combustion engine operated with a gasoline-methanol mixture as fuel and including a fuel system for supplying the fuel to the internal combustion engine; tje improvement comprising a water-absorbing filter and a ventilating line connected to the fuel system and passing through the filter, whereby moisture in the ventilating line is removed so that the fuel system is ventilated with dry air.
Claim 3
Dependent Claim
15 words
The internal combustion engine of claim 1, wherein the water-absorbing filter comprises a water-absorbing material.
Claim 4
Dependent Claim
13 words
The internal combustion engine of claim 2, wherein the water-absorbing material is silicagel.
Claim 5
Dependent Claim
30 words
The internal combustion engine of claim 1, further comprising a heating device associated with the water-absorbing filter for heating the water-absorbing filter during the operation of the internal combustion engine.
Claim 6
Dependent Claim
14 words
The internal combustion engine of claim 4, wherein the heating device is heated electrically.
Claim 7
Dependent Claim
31 words
The internal combustion engine of claim 5, further comprising a battery-charging generator driven by the internal combustion engine, the electric heating device being operated from excess energy produced by the generator.
Claim 8
Dependent Claim
23 words
The internal combustion engine of claim 4, wherein the heating device is heated by hot exhaust gases emitted from the internal combustion engine.
Claim 9
Dependent Claim
35 words
The internal combustion engine of claim 7, wherein the heating device includes a housing jacket surrounding the water-absorbing filter, the housing jacket being connected to the internal combustion engine for receiving the exhaust gases therefrom.
Claim 10
Dependent Claim
35 words
The internal combustion engine of claim 1, further comprising an activated charcoal filter arranged in the ventilating line between the fuel system and the water-absorbing filter for adsorbing vaporous fuel components from the fuel system.
References Cited (Backward Citations)
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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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |