US5076245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel pressure control system for gaseous fuel engines
Assignee: Individual
•
Filing: 1990-08-01
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Granted: 1991-12-31
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Expires: 2010-08-01
Abstract
Abstract This invention has an inlet for either gaseous or liquified gases (LP gas requiring a vaporizer within the system) with the proper passages from the inlet to a back seated fuel valve which is opened by a pressure differential (vacuum from the idle system) across a diaphragm engaging a lever which moves a sealed actuating pin inward to open the fuel valve allowing gaseous fuels to move to the outlet through a proper confining passage. Placed between the outlet and the vacuum chamber of the fuel valve diaphragm is a chamber divided by a free floating diaphragm providing two chambers, one chamber is either balanced for air cleaner resistance or vented to the atmosphere, the other chamber having a free passage to the outlet and a passage in the center of the chamber, having communication with the vacuum side of the fuel valve diaphragm, which is throttled by the floating diaphragm diluting the idle vacuum signal to position the fuel valve.
Inventors
- 👤 James S. Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:52
CPC Classifications
F; F02; F02M; F02M21/00; F02M21/02; F02M21/06; F02M21/0218; F02M21/023; F02M21/0239; G; G05; G05D; G05D16/00; G05D16/04; G05D16/06; G05D16/063; G05D16/0675; G05D16/0677; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30; Y10; Y10S; Y10S137/00; Y10S137/907
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
159 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; and said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway.
Claim 2
Dependent Claim
159 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; and said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway.
Claim 3
Dependent Claim
169 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and said fuel valve being backseated against the flow of gas.
Claim 4
Dependent Claim
169 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and said fuel valve being backseated against the flow of gas.
Claim 5
Dependent Claim
23 words
The fuel pressure control system of claim 1 wherein said second side of said fuel pressure diaphragm is in communication with ambient pressure.
Claim 6
Dependent Claim
23 words
The fuel pressure control system of claim 1 wherein said second side of said zero pressure diaphragm is in communication with ambient pressure.
Claim 7
Dependent Claim
192 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and a start diaphragm valve interposed between said first side of said fuel valve diaphragm and engine vacuum, said start diaphragm valve being normally open and closeable by engine vacuum to provide sufficient vacuum for starting.
Claim 8
Dependent Claim
192 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and a start diaphragm valve interposed between said first side of said fuel valve diaphragm and engine vacuum, said start diaphragm valve being normally open and closeable by engine vacuum to provide sufficient vacuum for starting.
Claim 9
Dependent Claim
200 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and a check valve interposed between said outlet passageway and said first side of said fuel pressure diaphragm, said check valve permitting flow from said first side of said fuel pressure passageway into said outlet passageway in the event of rapid acceleration.
Claim 10
Dependent Claim
200 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and a check valve interposed between said outlet passageway and said first side of said fuel pressure diaphragm, said check valve permitting flow from said first side of said fuel pressure passageway into said outlet passageway in the event of rapid acceleration.
Claim 11
Dependent Claim
32 words
The fuel pressure control system of claim 1 further comprising an adjustable idle trim orifice interposed between said first side of said fuel valve diaphragm and said communication thereof with engine vacuum.
Claim 12
Dependent Claim
14 words
The fuel pressure control system of claim 1 in combination with a film vaporizer.
Claim 13
Dependent Claim
174 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and said fuel valve being operatively connected in series with a vacuum operated fuel shutoff valve.
Claim 14
Dependent Claim
174 words
A fuel pressure control system for gaseous fuel engines, comprising: a fuel valve interposed between an inlet passageway adapted for connection to a source of stored gaseous fuel and an outlet passageway adapted for connection to a gaseous fuel metering device; said fuel valve being operatively connected to a fuel valve diaphragm having first and second sides; said first side of said fuel valve diaphragm being in communication with engine vacuum, and said first side of said fuel valve diaphragm being also in communication with said outlet passageway by way of an orificed valve seat; said orificed valve seat being throttled by a first side of a zero pressure diaphragm having first and second sides, said first side of said zero pressure diaphragm being in communication with said outlet passageway, such that said zero pressure diaphragm bleeds down vacuum acting on said fuel diaphragm to position said fuel valve, thereby controlling fuel delivery pressure in said outlet passageway; and said fuel valve being operatively connected in series with a vacuum operated fuel shutoff valve.
Claim 15
Dependent Claim
23 words
The fuel pressure control system of claim 2 wherein said second side of said fuel pressure diaphragm is in communication with ambient pressure.
Claim 16
Dependent Claim
23 words
The fuel pressure control system of claim 2 wherein said second side of said zero pressure diaphragm is in communication with ambient pressure.
Claim 17
Dependent Claim
32 words
The fuel pressure control system of claim 2 further comprising an adjustable idle trim orifice interposed between said first side of said fuel valve diaphragm and said communication thereof with engine vacuum.
Claim 18
Dependent Claim
14 words
The fuel pressure control system of claim 2 in combination with a film vaporizer.
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) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |