US3890949A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Twist turbulence forming passage, especially in the intake system of reciprocable internal combustion engines
Assignee: Individual
•
Filing: 1973-07-16
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Granted: 1975-06-24
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Expires: 1993-07-16
Abstract
Abstract A passage for supplying a gaseous fuel component, such as air, to the cylinder of an internal combustion engine in which the gaseous component is caused to take on a rotating movement prior to entry thereof into the cylinder. The passage has a curved section at the upstream end and at the downstream end has a cylindrical section which is provided with a valve. Between the curved upstream section and the cylindrical downstream section there is a helical section. The gaseous component is caused to rotate about the axis of the helical section and, therefore, to enter the cylinder in a turbulent, rotating, condition. Inlet and outlet passages are the same and at least similar with respect to the foregoing passage characteristics.
Inventors
- 👤 Ludwig Elsbett
- 👤 Gunter Elsbett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:29
CPC Classifications
F; F02; F02F; F02F1/00; F02F1/24; F02F1/42; F02F1/4228; F02B; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
187 words
In combination with an internal combustion engine having a cylinder, a cylindrical gas inlet passage having an opening at one end located axially into one end of the cylinder and adapted for being closed at the cylinder end, a helical channel having one end in communication with the passage, a valve having an actuating stem coaxial with the cylindrical gas inlet passage, said cylinder having cylinder means for slidably receiving the valve stem and disposed near the other end of the cylindrical gas inlet passage and rising from said other end of said cylindrical gas inlet passage to the other end of said helical channel, and a supply channel for supplying gas to said helical channel and having one end connected to said other end of said helical channel and the other end adapted to recieve the gas to be supplied to said cylinder via said channels and passage, the axis of said helical channel being laterally offset from the axis of said cylindrical gas inlet passage and the peripheral wall of said helical passage being a substantially uniform distance from the axis of said helical channel.
Claim 2
Dependent Claim
187 words
In combination with an internal combustion engine having a cylinder, a cylindrical gas inlet passage having an opening at one end located axially into one end of the cylinder and adapted for being closed at the cylinder end, a helical channel having one end in communication with the passage, a valve having an actuating stem coaxial with the cylindrical gas inlet passage, said cylinder having cylinder means for slidably receiving the valve stem and disposed near the other end of the cylindrical gas inlet passage and rising from said other end of said cylindrical gas inlet passage to the other end of said helical channel, and a supply channel for supplying gas to said helical channel and having one end connected to said other end of said helical channel and the other end adapted to recieve the gas to be supplied to said cylinder via said channels and passage, the axis of said helical channel being laterally offset from the axis of said cylindrical gas inlet passage and the peripheral wall of said helical passage being a substantially uniform distance from the axis of said helical channel.
Claim 3
Dependent Claim
19 words
An engine in combination according to claim 1 in which said supply channel is curved to substantially an S-shape.
Claim 4
Dependent Claim
58 words
An engine in combination according to claim 1 in which said one end of said cylinder also has an outlet passage spaced laterally from said cylindrical gas inlet passage and said other end of said helical channel is disposed substantially in a plane passing through the central axes of said cylindrical gas inlet passage and said outlet passage.
Claim 5
Dependent Claim
92 words
An engine in combination according to claim 1 in which said one end of said cylinder also has an outlet passage spaced laterally from said cylindrical gas inlet passage and said other end of said helical channel is disposed substantially in a first plane passing through the central axes of said cylindrical gas inlet passage and said outlet passage, said supply passage being S-shaped and having the said one end disposed in said first plane and the other end disposed in a second plane parallel to said first plane and spaced therefrom.
Claim 6
Dependent Claim
19 words
An engine in combination according to claim 1 in which the pitch of said helical channel is substantially uniform.
Claim 7
Dependent Claim
21 words
An engine in combination according to claim 1 in which said helical channel extends over an angle of at least 220*.
Claim 8
Dependent Claim
29 words
An engine in combination according to claim 1 in which said supply channel is in a plane which is perpendicular to the axis of said cylindrical gas inlet passage.
Claim 9
Dependent Claim
33 words
An engine in combination accoRding to claim 1 which includes a rib formed as a wall portion of the supply end connecting with the valve guide means to form a gas guide blade.
Claim 10
Dependent Claim
134 words
An engine in combination according to claim 1 in which said one end of said cylinder also has an outlet passage spaced laterally from said cylindrical gas inlet passage and said other end of said helical channel is disposed substantially in a first plane passing through the central axes of said cylindrical gas inlet passage and said outlet passage, said supply passage being S-shaped and having the said one end disposed in said first plane and the other end disposed in a second plane parallel to said first plane and spaced therefrom, one side of said supply passage in said first plane intersecting a point on the axis of said helical channel, a line from said point perpendicular to said first plane intersectiing said second plane at the other side of said supply passage.
Claim 11
Dependent Claim
29 words
An engine in combination according to claim 1 in which the axial length of said cylindrical gas inlet passage is from about 0.3 to 0.5 times the diameter thereof.
Claim 12
Dependent Claim
31 words
An engine in combination according to claim 1 in which the advancing pitch of said helical channel per revolution is equal to about twice the mean diameter of the helical channel.
References Cited (Backward Citations)
US3274981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |