US3985111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Article for defining an auxiliary compartment for an engine combustion chamber
Assignee: Eaton Corp
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Filing: 1973-12-17
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Granted: 1976-10-12
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Expires: 1993-12-17
Abstract
Abstract An article for defining an auxiliary compartment for providing accelerated initial warm-up of the combustion chamber of an internal combustion engine, and thereafter providing for continuous transfer of heat to the walls of the combustion chamber to prevent overheating of the article. The article has a central tubular heat-receiving portion with one end closed and the opposite end open in a generally cup-shaped configuration with a mounting flange provided around the rim of the open end, and a heat output portion of preferably annular configuration provided around the outer periphery of the closed end region. An aperture is provided in the closed end for communicating the interior region of the central portion with the engine combustion chamber. In one embodiment the article is sized and shaped such that the heat output portion is in contact with adjacent portions of the combustion chamber wall to provide continuous transfer of heat from the closed end of the cup to the combustion chamber. In another embodiment the article is shaped and sized such that the heat output portion is initially spaced from the combustion chamber walls. Upon heating of the central portion of the article to a predetermined temperature, the article expands and the heat output portion contacts the combustion chamber wall to thereafter provide continuous heat transfer thereto. The method of preheating includes electrically insulating the mounting flange and grounding the heat output portion and passing an electrical current through the article to cause resistance heating thereof.
Inventors
- 👤 Michael C. Turkish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:27
CPC Classifications
F; F02; F02B; F02B23/00; F02B23/08; F02B19/00; F02B19/10; F02B19/1004; F02B19/1009; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S123/00; Y10S123/04
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
207 words
An article for use in defining an auxiliary compartment of the combustion chamber of an internal combustion engine, said article comprising: a. a tubular central heat receiving portion with one end open and the opposite end cupped; b. a mounting portion disposed adjacent said open end and extending in a direction generally outwardly from the wall of said central portion; c. at least one aperture formed in said cupped end for communicating the interior region of said central portion with the engine combustion chamber; and d. a heat output portion adjacent said cupped end and extending in a direction generally outwardly from the outer periphery of said central portion, said heat output portion having predetermined dimensions such that, upon attachment of said article in an engine combustion chamber by said mounting portion, said article expands during initial engine warm-up and said heat output portion contacts, initially spaced adjacent walls of the engine combustion chamber at a predetermined temperature with said central portion spaced from said adjacent chamber walls and said heat output portion remains in such contact at temperatures greater than said predetermined value for conducting heat only from the heat output portion of the cupped end of said article to the walls of the combustion chamber.
Claim 2
Dependent Claim
207 words
An article for use in defining an auxiliary compartment of the combustion chamber of an internal combustion engine, said article comprising: a. a tubular central heat receiving portion with one end open and the opposite end cupped; b. a mounting portion disposed adjacent said open end and extending in a direction generally outwardly from the wall of said central portion; c. at least one aperture formed in said cupped end for communicating the interior region of said central portion with the engine combustion chamber; and d. a heat output portion adjacent said cupped end and extending in a direction generally outwardly from the outer periphery of said central portion, said heat output portion having predetermined dimensions such that, upon attachment of said article in an engine combustion chamber by said mounting portion, said article expands during initial engine warm-up and said heat output portion contacts, initially spaced adjacent walls of the engine combustion chamber at a predetermined temperature with said central portion spaced from said adjacent chamber walls and said heat output portion remains in such contact at temperatures greater than said predetermined value for conducting heat only from the heat output portion of the cupped end of said article to the walls of the combustion chamber.
Claim 3
Dependent Claim
35 words
The article defined in claim 1, wherein said central portion, said mounting portion and said heat output portion are formed integrally of a material resistant to oxidation when exposed to combustion products at engine temperatures.
Claim 4
Dependent Claim
15 words
The article defined in claim 2 wherein said oxidation resistant material is a metal alloy.
Claim 5
Dependent Claim
26 words
The article defined in claim 3, wherein said metal alloy is selected from the group consisting of AISI type 300 series steel, or a chromium-nickel alloy.
Claim 6
Dependent Claim
18 words
The article defined in claim 1, wherein said predetermined temperature has a value not greater than 500° C.
Claim 7
Dependent Claim
22 words
The article defined in claim 1 wherein said heat output portion extends radially outwardly from the closed end of said central portion.
Claim 8
Dependent Claim
24 words
The article defined in claim 6, wherein said heat output portion includes a truncated conical surface for contacting the walls of engine combustion chamber.
Claim 9
Dependent Claim
17 words
The article defined in claim 6, wherein said heat output portion extends axially from said cupped end.
Claim 10
Dependent Claim
24 words
The article defined in claim 8, wherein said heat output portion includes a truncated conical surface for contacting the walls of engine combustion chamber.
Claim 11
Dependent Claim
14 words
The article defined in claim 1, wherein said end aperture includes a converging-diverging nozzle.
Claim 12
Dependent Claim
18 words
The article defined in claim 1, wherein said central portion has the wall thickness less than 3.0 mm.
Claim 13
Dependent Claim
15 words
The article defined in claim 1, wherein said central portion has the wall thereof convoluted.
Claim 14
Dependent Claim
35 words
The article defined in claim 1, wherein said central portion has a second aperture formed in the wall thereof for providing a passage for communicating the interior thereof with the means for igniting combustible mixture.
Claim 15
Dependent Claim
16 words
The article defined in claim 1, wherein said heat output portion has a generally annular configuration.
Claim 16
Dependent Claim
188 words
An article for defining an auxiliary compartment for the combustion chamber of an internal combustion engine, said article comprising: a. a tubular central heat-receiving portion with one end open and the opposite end cupped; b. a mounting portion disposed adjacent said open end and extending in a direction generally outwardly from the wall of said central portion; c. at least one aperture formed in the cupped end for communicating the interior region of said central portion with the engine combustion chamber; d. a heat output portion adjacent said cupped end and extending in a direction generally outwardly from the outer periphery of said tubular central, said heat output portion having predetermined dimensions such that, upon attachment of said article in an engine by said mounting portion, said heat output portion is initially spaced from contact with adjacent walls of the engine combustion chamber and, upon engine warm-up, said heat output portion expands to contact the adjacent combustion chamber walls to form a heat sink for conducting heat to said walls thereafter during continued engine operation with said heat receiving portion being spaced from said adjacent combustion chamber walls.
Claim 17
Dependent Claim
188 words
An article for defining an auxiliary compartment for the combustion chamber of an internal combustion engine, said article comprising: a. a tubular central heat-receiving portion with one end open and the opposite end cupped; b. a mounting portion disposed adjacent said open end and extending in a direction generally outwardly from the wall of said central portion; c. at least one aperture formed in the cupped end for communicating the interior region of said central portion with the engine combustion chamber; d. a heat output portion adjacent said cupped end and extending in a direction generally outwardly from the outer periphery of said tubular central, said heat output portion having predetermined dimensions such that, upon attachment of said article in an engine by said mounting portion, said heat output portion is initially spaced from contact with adjacent walls of the engine combustion chamber and, upon engine warm-up, said heat output portion expands to contact the adjacent combustion chamber walls to form a heat sink for conducting heat to said walls thereafter during continued engine operation with said heat receiving portion being spaced from said adjacent combustion chamber walls.
Claim 18
Dependent Claim
36 words
The article defined in claim 15, wherein said central portion, said mounting portion and said heat output portion are formed integrally of material resistant to oxidation when exposed to engine combustion products at engine operating temperatures.
Claim 19
Dependent Claim
14 words
The article defined in claim 16, wherein said oxidation resistant material is metal alloy.
Claim 20
Dependent Claim
24 words
The article defined in claim 17, wherein said material is one of the group consisting of AISI type 300 series steel or chrome-nickel alloy.
Claim 21
Dependent Claim
13 words
The article defined in claim 15, wherein said aperture includes a converging-diverging nozzle.
Claim 22
Dependent Claim
19 words
The article defined in claim 15, wherein said central portion has the wall thickness thereof less than 3.0 mm.
Claim 23
Dependent Claim
15 words
The article defined in claim 15, wherein said central portion has the wall thereof convoluted.
Claim 24
Dependent Claim
33 words
The article defined in claim 15, wherein said heat output portion is sized so as to produce a press-fit when said article is installed in the combustion chamber of an internal combustion engine.
Claim 25
Dependent Claim
31 words
The device defined in claim 15, wherein said central portion has a second aperture therein such that a passage is provided for communicating the interior thereof with the engine fuel igniter.
Claim 26
Dependent Claim
17 words
The article defined in claim 15, wherein said mounting portion extends radially outwardly from the central portion.
Claim 27
Dependent Claim
16 words
The article defined in claim 15, wherein said heat output portion has a generally annular configuration.
Claim 28
Dependent Claim
172 words
An article for use in defining an auxiliary compartment for the combustion chamber of an internal combustion engine, said article comprising: a. a tubular central heat receiving portion with one end opened and the opposite end cupped; b. a mounting portion disposed adjacent said open end; c. port means formed in the region of said cupped end for communicating the interior region of said central portion with the engine combustion chamber; d. a heat output portion adjacent said cupped end, said heat output portion having predetermined dimensions such that, upon attachment of said article in an engine combustion chamber by said mounting portion, said heat output portion is initially spaced from and expands to contact adjacent walls of the engine combustion chamber during initial engine warm-up and thereafter remains in such contact during continued engine operation, said heat receiving portion being spaced from said combustion chamber walls, and heat is conducted only from the said heat output portion of the cupped end of said article to the walls of the combustion chamber.
Claim 29
Dependent Claim
172 words
An article for use in defining an auxiliary compartment for the combustion chamber of an internal combustion engine, said article comprising: a. a tubular central heat receiving portion with one end opened and the opposite end cupped; b. a mounting portion disposed adjacent said open end; c. port means formed in the region of said cupped end for communicating the interior region of said central portion with the engine combustion chamber; d. a heat output portion adjacent said cupped end, said heat output portion having predetermined dimensions such that, upon attachment of said article in an engine combustion chamber by said mounting portion, said heat output portion is initially spaced from and expands to contact adjacent walls of the engine combustion chamber during initial engine warm-up and thereafter remains in such contact during continued engine operation, said heat receiving portion being spaced from said combustion chamber walls, and heat is conducted only from the said heat output portion of the cupped end of said article to the walls of the combustion chamber.
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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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |