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US4991561A Expired / Lapsed US ⏱️ 0.0 years remaining

Gas-air mixer

Assignee: NIS pri VTU Angel Kantschev
•
Filing: 1990-02-02
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Granted: 1991-02-12
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Expires: 2010-02-02
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Abstract

Abstract A gas-air mixer for internal combustion engines having an inlet and an outlet diffusor and being mounted in a collar member which forms a cyclindrical surface between them. Feeding channels are disposed between the inlet and outlet diffusors which terminate at the external side of the diffusors in a concentrically shaped annular channel. Both diffusors are constructed as separate bushings. The outlet diffusor is fixedly mounted in the collar and the inlet diffusor is movably mounted in the collar, around its axis by means of a control lever. The diffusors are seated end face to end face and an outer cylindrical surface mutually defined by them through which have been cut radial slots form feeding channels for gas fuel. By turning of said diffusors with respect to each other the cross-section of the feeding channels is adjusted depending on the angle of rotation of the inlet diffusor around its axis different operating regimes of the engine. The air-gas mixer is used in engine construction and in particular for gas-diesel internal combustion engines.

Inventors

  • 👤 Milen B. Gerassimov
  • 👤 Stojtscho Dimitrov
  • 👤 Zonjo I. Petkov

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-06 10:49
CPC Classifications
F; F02; F02B; F02B43/00; F02M; F02M19/00; F02M19/02; F02M19/021; F02M19/0228; F02M19/08; F02M19/088; F02M21/00; F02M21/02; F02M21/04; F02M21/042; F02M21/047; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 210 words
An improved gas-air mixer for an internal combustion engine, comprising in combination, an inlet and an outlet diffusor coaxially arranged with respect to each other, and a collar member which includes a cylindrical surface formed between the inlet and outlet diffusor, said inlet and outlet diffusors and collar member jointly defining feeding channels means terminating at the outer side of the diffusors in a concentrically shaped annular channel which is connected to supply conduit means for gaseous fuel, said inlet diffusor and said outlet diffusor are constructed as separate bushings, whereby said outlet diffusor is fixedly mounted in said collar member and said inlet diffusor is movably mounted in said collar member around its axis by means of a control lever, said inlet diffusor and said outlet diffusor are seated and packed in said collar member one against the other, along an inner cylindrical surface formed by one of said diffusors and an outer cylindrical surface formed by another one of said diffusors, said inner and outer cylindrical surfaces having cut radial slots which at least partially form said feeding channels means for gaseous fuel having an adjustable cross-section which depends on the angle of rotation of the inlet diffusor around its axis at different operating regimes of said engine.
Claim 2
Dependent Claim 210 words
An improved gas-air mixer for an internal combustion engine, comprising in combination, an inlet and an outlet diffusor coaxially arranged with respect to each other, and a collar member which includes a cylindrical surface formed between the inlet and outlet diffusor, said inlet and outlet diffusors and collar member jointly defining feeding channels means terminating at the outer side of the diffusors in a concentrically shaped annular channel which is connected to supply conduit means for gaseous fuel, said inlet diffusor and said outlet diffusor are constructed as separate bushings, whereby said outlet diffusor is fixedly mounted in said collar member and said inlet diffusor is movably mounted in said collar member around its axis by means of a control lever, said inlet diffusor and said outlet diffusor are seated and packed in said collar member one against the other, along an inner cylindrical surface formed by one of said diffusors and an outer cylindrical surface formed by another one of said diffusors, said inner and outer cylindrical surfaces having cut radial slots which at least partially form said feeding channels means for gaseous fuel having an adjustable cross-section which depends on the angle of rotation of the inlet diffusor around its axis at different operating regimes of said engine.
Claim 3
Dependent Claim 21 words
The improvement in a gas-air mixer as set forth in claim 1, wherein said internal combustion engine is a diesel engine.

References Cited (Backward Citations)

US4058102A Cited
US4280968A Cited
US4440137A Cited
US4479466A Cited
US4479466B1 Cited
US4664089A Cited
US4660525A Cited
US4872440A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-02-11 1994-08-13 1995-02-12 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-02-11 1998-08-13 1999-02-12 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-02-11 2002-08-13 2003-02-12 $7700.00 Window Closed / Lapsed

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