US3861376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In-cylinder mixers for internal combustion engines
Assignee: Individual
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Filing: 1973-11-19
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Granted: 1975-01-21
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Expires: 1993-11-19
Abstract
Abstract Improved in-cylinder mixer means for internal combustion engines. The use of a leaner mixture of fuel and air, or use of more recycled burned gas, to achieve a reduction in the nitrogen oxides exhausted by an internal combustion engine is made possible by reducing the cyclic variation of combustion pressure in the engine. Reduction in the cyclic variation is accomplished in the invention by improving the uniformity of the mixture and turbulence of the gases and vapor in the cylinders, and by increasing the initial rate of combustion. The mixing is improved by dividing the stream of intake gas leaving the intake valve into a series of jets and redirecting at least a portion of them axially of the cylinder to increase the induction of secondary gases already present in the cylinder chamber. Dividing the intake gas into a series of jets also operates to decrease the length and increase the uniformity of each jet and to eliminate vortices in the gas. The increase in combustion rate is accomplished by locating the spark gas adjacent projecting, matching surfaces on top of the piston and on the bottom of the cylinder head, which surfaces approach each other closely as the piston approaches top dead center and cause the burning gases to be propelled into the main volume of the combustion chamber.
Inventors
- 👤 Carlyle M Ashley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:47
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4235; F02F1/4242; F02B; F02B23/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
112 words
In an internal combustion engine including a cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and gases through the intake passage; means for mixing the vaporized fuel, air and previously burned gases uniformly prior to combustion, said last-named means comprising means for dividing the intake fuel and air stream leaving the intake valve into at least several streams and directing at least a substantial portion of said streams along the chamber to avoid impingement of the centers of the streams on the chamber side wall and to avoid the formation of a toroidal vortex in the chamber.
Claim 2
Dependent Claim
112 words
In an internal combustion engine including a cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and gases through the intake passage; means for mixing the vaporized fuel, air and previously burned gases uniformly prior to combustion, said last-named means comprising means for dividing the intake fuel and air stream leaving the intake valve into at least several streams and directing at least a substantial portion of said streams along the chamber to avoid impingement of the centers of the streams on the chamber side wall and to avoid the formation of a toroidal vortex in the chamber.
Claim 3
Dependent Claim
74 words
In an internal combustion engine including a cylinder and cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and air through the intake passage; improved in-cylinder mixing structure comprising means located adjacent the intake valve for dividiNg the vaporized fuel and gases stream leaving the intake valve into at least four streams and directing adjacent streams in substantially different directions.
Claim 4
Dependent Claim
74 words
In an internal combustion engine including a cylinder and cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and air through the intake passage; improved in-cylinder mixing structure comprising means located adjacent the intake valve for dividiNg the vaporized fuel and gases stream leaving the intake valve into at least four streams and directing adjacent streams in substantially different directions.
Claim 5
Dependent Claim
38 words
In-cylinder mixing structure as defined in claim 2 wherein said means to divide the fuel and gases stream leaving the intake passage comprises a plurality of channels in said cylinder head adjacent the circumference of the intake valve.
Claim 6
Dependent Claim
54 words
In-cylinder mixing structure as defined in claim 3 wherein said channels cooperate with the intake valve to direct a portion of the fuel and gases stream leaving the intake passage along the chamber so as not to impinge upon the chamber wall and to direct another portion of the stream diagonally across the chamber.
Claim 7
Dependent Claim
25 words
In-cylinder mixing structure as defined in claim 3 wherein said channels are circumferentially disposed with respect to the intake valve and spaced radially outwardly therefrom.
Claim 8
Dependent Claim
166 words
In an internal combustion engine including a cylinder and cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and air through the intake passage; improved in-cylinder mixing structure comprising means located adjacent the intake valve for dividing the vaporized fuel and gases stream leaving the intake valve into a plurality of streams and redirecting at least a portion of the streams, said last-named means comprising a plurality of channels in said cylinder head circumferentially disposed with respect to the intake valve and spaced radially outwardly therefrom, said channels including a first set arranged to direct a portion of the fuel and gases stream leaving the intake passage along the chamber so as not to impinge upon the chamber wall and a second set arranged to direct another portion of the stream diagonally across the chamber, the channels of said first and second sets being mingled with one another in their circumferential arrangement.
Claim 9
Dependent Claim
166 words
In an internal combustion engine including a cylinder and cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and air through the intake passage; improved in-cylinder mixing structure comprising means located adjacent the intake valve for dividing the vaporized fuel and gases stream leaving the intake valve into a plurality of streams and redirecting at least a portion of the streams, said last-named means comprising a plurality of channels in said cylinder head circumferentially disposed with respect to the intake valve and spaced radially outwardly therefrom, said channels including a first set arranged to direct a portion of the fuel and gases stream leaving the intake passage along the chamber so as not to impinge upon the chamber wall and a second set arranged to direct another portion of the stream diagonally across the chamber, the channels of said first and second sets being mingled with one another in their circumferential arrangement.
Claim 10
Dependent Claim
18 words
In-cylinder mixing structure as defined in claim 6 wherein said channels are separated from one another by lands.
Claim 11
Dependent Claim
147 words
In an internal combustion engine including a cylinder and cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and air through the intake passage; improved in-cylinder mixing structure comprising means located adjacent the intake valve for dividing the vaporized fuel and gases stream leaving the intake valve into a plurality of streams and redirecting at least a portion of the streams, said last-named means comprising a plurality of circumferentially spaced deflector members projecting radially outwardly from the intake valve below its seating surface, said deflector members cooperating with the lower portion of the intake valve to direct a portion of the fuel and gases stream leaving the intake passage along the chamber so as not to impinge upon the chamber wall and to direct another portion of the stream diagonally across the chamber.
Claim 12
Dependent Claim
147 words
In an internal combustion engine including a cylinder and cylinder head defining a chamber, an intake passage communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and air through the intake passage; improved in-cylinder mixing structure comprising means located adjacent the intake valve for dividing the vaporized fuel and gases stream leaving the intake valve into a plurality of streams and redirecting at least a portion of the streams, said last-named means comprising a plurality of circumferentially spaced deflector members projecting radially outwardly from the intake valve below its seating surface, said deflector members cooperating with the lower portion of the intake valve to direct a portion of the fuel and gases stream leaving the intake passage along the chamber so as not to impinge upon the chamber wall and to direct another portion of the stream diagonally across the chamber.
Claim 13
Dependent Claim
101 words
In an internal combustion engine having stationary and moving elements defining a chamber, an intake passage communicating with the chamber, means for controlling the intake of vaporized fuel and gases from the passage to the chamber; means for mixing the incoming vapor and gases and the retained burned gas from previous combustion cycles, comprising means for dividing the incoming stream into at least several jets and for directing at least a portion of these jets along the chamber so that the combined tangential component of the jets is small enough to prevent the formation of an axial vortex in the chamber.
Claim 14
Dependent Claim
101 words
In an internal combustion engine having stationary and moving elements defining a chamber, an intake passage communicating with the chamber, means for controlling the intake of vaporized fuel and gases from the passage to the chamber; means for mixing the incoming vapor and gases and the retained burned gas from previous combustion cycles, comprising means for dividing the incoming stream into at least several jets and for directing at least a portion of these jets along the chamber so that the combined tangential component of the jets is small enough to prevent the formation of an axial vortex in the chamber.
Claim 15
Dependent Claim
104 words
In an internal combustion engine including a cylinder and cylinder head defining a combustion chamber, an intake passage having an elbow turn communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and gases through the intake passage; means for preventing the formation of an axial vortex in the chamber due to unevEn velocity distribution of the fuel and gases stream leaving the intake passage comprising at least one transverse turning vane in the intake passage ahead of the intake valve, the line of development of the vane being parallel to the centerline of the turn of the elbow.
Claim 16
Dependent Claim
104 words
In an internal combustion engine including a cylinder and cylinder head defining a combustion chamber, an intake passage having an elbow turn communicating with the chamber, and an intake valve for controlling the passage of vaporized fuel and gases through the intake passage; means for preventing the formation of an axial vortex in the chamber due to unevEn velocity distribution of the fuel and gases stream leaving the intake passage comprising at least one transverse turning vane in the intake passage ahead of the intake valve, the line of development of the vane being parallel to the centerline of the turn of the elbow.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |