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US4161499A
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Fuel metering device for internal combustion engine
Assignee: Individual
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Filing: 1978-04-11
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Granted: 1979-07-17
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Expires: 1998-04-11
Abstract
Abstract A fuel metering device for internal combustion engines is simple in structure, efficient in operation and capable of recirculating unused fuel. The device primarily comprises a plurality of passage elements interconnected to form the configuration of an inverted isosceles triangle having a median. The lower vertex of the triangle is connected to a fuel nozzle adjacent a venturi in an air supply passage of the engine, fuel is supplied under pressure from a pump to one upper corner of the triangle, and unused fuel is recirculated from the other upper corner to the fuel pump. The device operates in a manner equivalent to an electrical wheatstone bridge such that the fuel flow in the device tends to produce a balanced condition.
Inventors
- 👤 Peter Floroff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:04
CPC Classifications
F; F02; F02M; F02M17/00; F02M17/02; F02M7/00; F02M7/10; F02M7/106; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/85954
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
158 words
A fuel metering device for an internal combustion engine comprising a fuel flow regulating means having a plurality of tubular passage elements forming a configuration of a generally isosceles triangle including a median, said triangle having a first side, and second and third sides extending from opposite ends of said first side to a vertex, and said median extending from the mid-point of said first side to said vertex, an input conduit connected to the junction of said first and second sides for supplying fuel under pressure to said regulating means, an output conduit connected to the junction of said first and third sides, and an extension passage element connected to said vertex, said extension passage element being connectible to a fuel nozzle adjacent a venturi in an air supply passage of an internal combustion engine whereby said regulating means is responsive to air pressure in the venturi to provide required fuel flow to said air supply passage.
Claim 2
Dependent Claim
158 words
A fuel metering device for an internal combustion engine comprising a fuel flow regulating means having a plurality of tubular passage elements forming a configuration of a generally isosceles triangle including a median, said triangle having a first side, and second and third sides extending from opposite ends of said first side to a vertex, and said median extending from the mid-point of said first side to said vertex, an input conduit connected to the junction of said first and second sides for supplying fuel under pressure to said regulating means, an output conduit connected to the junction of said first and third sides, and an extension passage element connected to said vertex, said extension passage element being connectible to a fuel nozzle adjacent a venturi in an air supply passage of an internal combustion engine whereby said regulating means is responsive to air pressure in the venturi to provide required fuel flow to said air supply passage.
Claim 3
Dependent Claim
59 words
A fuel metering device according to claim 1 wherein said input conduit is connected to a fuel pump operative to draw fuel from a fuel supply tank and deliver said fuel under pressure to said input conduit, and said output conduit is connected to said fuel pump for recirculating unused fuel from said output conduit to said fuel pump.
Claim 4
Dependent Claim
148 words
A fuel metering device for an internal combustion engine comprising a fuel flow regulating means having a plurality of tubular passage elements forming a configuration of an inverted generally isosceles triangle including a median, said triangle having a substantially horizontal upper side, two sloping sides joining said upper side at two upper corners and joining each other at a lower vertex, an input conduit connected to one upper corner of said triangle for supplying fuel under pressure to said regulating means, an output conduit connected to the other upper corner of said triangle, and an extension passage element connected to said lower vertex, said extension passage element being connectible to a fuel nozzle adjacent a venturi in an air supply passage of an internal combustion engine whereby said regulating means is responsive to air pressure in the venturi to provide required fuel flow to said air supply passage.
Claim 5
Dependent Claim
148 words
A fuel metering device for an internal combustion engine comprising a fuel flow regulating means having a plurality of tubular passage elements forming a configuration of an inverted generally isosceles triangle including a median, said triangle having a substantially horizontal upper side, two sloping sides joining said upper side at two upper corners and joining each other at a lower vertex, an input conduit connected to one upper corner of said triangle for supplying fuel under pressure to said regulating means, an output conduit connected to the other upper corner of said triangle, and an extension passage element connected to said lower vertex, said extension passage element being connectible to a fuel nozzle adjacent a venturi in an air supply passage of an internal combustion engine whereby said regulating means is responsive to air pressure in the venturi to provide required fuel flow to said air supply passage.
Claim 6
Dependent Claim
59 words
A fuel metering device according to claim 3 wherein said input conduit is connected to a fuel pump operative to draw fuel from a fuel supply tank and deliver said fuel under pressure to said input conduit, and said output conduit is connected to said fuel pump for recirculating unused fuel from said output conduit to said fuel pump.
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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) | 1982-07-16 | 1983-01-15 | 1983-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-16 | 1987-01-15 | 1987-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-16 | 1991-01-15 | 1991-07-17 | $7700.00 | Window Closed / Lapsed |