US4193379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compression-ignition internal combustion engine
Assignee: Caterpillar Energy Solutions GmbH
•
Filing: 1977-07-19
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Granted: 1980-03-18
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Expires: 1997-07-19
Abstract
Abstract A compression-ignition internal combustion engine including a mixing chamber in permanently open communication with a cylinder of the engine via a duct, there being provided means for injecting fuel into the mixing chamber during compression of combustion air in the cylinder, the fuel being injected in a direction toward the duct and having the form of a narrow core jet surrounded by fine droplets such that combustion air displaced into the mixing chamber during the compression flows counter-currently to the core jet, and turbulence-producing means disposed within the chamber in the path of the inflowing displaced air and located so as to be outside the core jet, whereby inflowing displaced air impinges on the turbulence-producing means so as to increase the intensity of mixing of the fuel and air.
Inventors
- 👤 Werner Dietrich
- 👤 Oswald Hiemesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:36
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/14; F02B2275/00; F02B2275/14; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
220 words
A compression-ignition internal combustion engine comprising: at least one combustion cylinder; a piston reciprocably arranged in the cylinder; a mixing chamber; said mixing chamber is axially symmetrical; a duct permanently communicating the cylinder with the mixing chamber; means for injecting fuel into the mixing chamber during compression of combustion air in the cylinder, the fuel being injected in a direction toward the duct and having the form of a narrow core jet surrounded by fine droplets, said duct and said core jet are each coaxial with said mixing chamber such that combustion air displaced into the mixing chamber during the compression flows counter-currently to the core jet; and turbulence-producing means disposed within the chamber in the path of the inflowing displaced air and located so as to be outside of the core jet, producing means, being further defined by a body which is formed with an end face having a thickness of from 15 to 35% of the largest cross section of said chamber normal to the axis thereof on which inflowing air impinges and which lies in the region of a plane normal to the axis of said chamber and passing through the center of said chamber, said end face being formed with a sharp-edged boundary so as to increase the intensity of mixing of the fuel and air.
Claim 2
Dependent Claim
220 words
A compression-ignition internal combustion engine comprising: at least one combustion cylinder; a piston reciprocably arranged in the cylinder; a mixing chamber; said mixing chamber is axially symmetrical; a duct permanently communicating the cylinder with the mixing chamber; means for injecting fuel into the mixing chamber during compression of combustion air in the cylinder, the fuel being injected in a direction toward the duct and having the form of a narrow core jet surrounded by fine droplets, said duct and said core jet are each coaxial with said mixing chamber such that combustion air displaced into the mixing chamber during the compression flows counter-currently to the core jet; and turbulence-producing means disposed within the chamber in the path of the inflowing displaced air and located so as to be outside of the core jet, producing means, being further defined by a body which is formed with an end face having a thickness of from 15 to 35% of the largest cross section of said chamber normal to the axis thereof on which inflowing air impinges and which lies in the region of a plane normal to the axis of said chamber and passing through the center of said chamber, said end face being formed with a sharp-edged boundary so as to increase the intensity of mixing of the fuel and air.
Claim 3
Dependent Claim
21 words
An engine according to claim 1, wherein the thickness of said body is substantially 20% of the diameter of said body.
Claim 4
Dependent Claim
30 words
An engine according to claim 1, wherein the centre of said end face is located substantially mid-way between the axis of said chamber and the inner wall of said chamber.
Claim 5
Dependent Claim
38 words
An engine according to claim 1, wherein said end face is located in a plane which is inclined to the axis of said chamber, whereby inflowing air impinging on said end face is deflected towards said core jet.
Claim 6
Dependent Claim
33 words
An engine according to claim 4, wherein the plane including said end face is disposed at an angle of from 15° to 25° to a plane normal to the axis of said chamber.
Claim 7
Dependent Claim
37 words
An engine according to claim 1, wherein said body comprises a disc which is secured by means of a circular rod to the inner wall of said chamber, said rod having a smaller diameter than said disc.
Claim 8
Dependent Claim
21 words
An engine according to claim 6, wherein said disc has a thickness of substantially 20% of the diameter of said disc.
Claim 9
Dependent Claim
12 words
An engine according to claim 1 wherein said end face is circular.
Claim 10
Dependent Claim
13 words
An engine according to claim 1 wherein said end face is completely flat.
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) | 1983-03-18 | 1983-09-17 | 1984-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-18 | 1987-09-17 | 1988-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-18 | 1991-09-17 | 1992-03-18 | $7700.00 | Window Closed / Lapsed |