US3815566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine
Assignee: Individual
•
Filing: 1973-02-08
•
Granted: 1974-06-11
•
Expires: 1993-02-08
Abstract
Abstract A low-pollution engine of the type that burns air and fuel to move a piston, wherein a separate combustion chamber is provided near one end of the cylinder and connected to the cylinder by a constricted passageway, the combustion chamber holding enough air to completely burn all of the fuel therein so that substantially only combustion products enter the cylinder. The walls of the combustion chamber are insulated so that they remain heated, and a perforated plate connects the combustion chamber to the cylinder so that the hot combustion products pass through the plate into the cylinder to heat extra air therein and move the piston. The combustion chamber and cylinder are both purged but by different amounts of air, and fuel is admitted to the combustion chamber by an injection nozzle whose fuel stream hits a target in the combustion chamber to further break up and disperse the fuel.
Inventors
- 👤 J Staggs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:08
CPC Classifications
F; F01; F01B; F01B7/00; F01B7/20; F01L; F01L5/00; F01L5/04; F01L5/06; F02; F02B; F02B19/00; F02B19/14; F02B19/16; F02B25/00; F02B25/02; F02B25/04; F02B2019/006; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; F02B59/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
93 words
In an engine which includes a cylinder region and a piston device that moves within the cylinder region, the improvement comprising: walls defining a combustion chamber, including a wall with a plurality of holes communicating with said cylinder region, said combustion chamber being insulatingly mounted to minimize the loss of heat from the walls thereof to the surroundings; and means for applying air and fuel to said chamber, so that the mixture thereof can ignite and burn within the chamber and the combustion products can pass through said holes into the cylinder region.
Claim 2
Dependent Claim
93 words
In an engine which includes a cylinder region and a piston device that moves within the cylinder region, the improvement comprising: walls defining a combustion chamber, including a wall with a plurality of holes communicating with said cylinder region, said combustion chamber being insulatingly mounted to minimize the loss of heat from the walls thereof to the surroundings; and means for applying air and fuel to said chamber, so that the mixture thereof can ignite and burn within the chamber and the combustion products can pass through said holes into the cylinder region.
Claim 3
Dependent Claim
70 words
The improvement described in claim 1 wherein: said means for applying air and fuel includes first and second cylinder valve means at opposite portions of the cylinder region and a third valve means communicating with a portion of the combustion chamber which is spaced from said wall that has a plurality of holes, whereby to permit a lesser flow of purge air through the combustion chamber than through the cylinder.
Claim 4
Dependent Claim
142 words
An engine comprising: a cylinder with first and second end portions; a piston reciprocally mounted in the cylinder to move toward and away from the first cylinder end portion; a combustion chamber mounted near said first cylinder end portion, said chamber having a first perforated wall facing the first cylinder end portioN to supply combustion products of fuel burned in the chamber to the cylinder, and said chamber having a second perforated wall; an exhaust valve communicating with the second perforated wall of the combustion chamber; valve means communicating with the cylinder to flow air in a path that leads through the cylinder, the combustion chamber, and the exhaust valve; a fuel injector for injecting fuel into said combustion chamber; and timing means for operating said exhaust valve, said valve means, and said fuel injector in synchronism with movement of said piston.
Claim 5
Dependent Claim
142 words
An engine comprising: a cylinder with first and second end portions; a piston reciprocally mounted in the cylinder to move toward and away from the first cylinder end portion; a combustion chamber mounted near said first cylinder end portion, said chamber having a first perforated wall facing the first cylinder end portioN to supply combustion products of fuel burned in the chamber to the cylinder, and said chamber having a second perforated wall; an exhaust valve communicating with the second perforated wall of the combustion chamber; valve means communicating with the cylinder to flow air in a path that leads through the cylinder, the combustion chamber, and the exhaust valve; a fuel injector for injecting fuel into said combustion chamber; and timing means for operating said exhaust valve, said valve means, and said fuel injector in synchronism with movement of said piston.
Claim 6
Dependent Claim
35 words
The engine described in claim 3 wherein: the volume enclosed at the first cylinder end portion, when the piston is closest thereto, is at least twice as great as the volume of said combustion chamber.
Claim 7
Dependent Claim
23 words
The engine described in claim 3 including: a second exhaust valve communicating with said cylinder in a path that bypasses the combustion chamber.
Claim 8
Dependent Claim
32 words
The engine described in claim 3 wherein: said combustion chamber has a large enough volume to contain sufficient air for complete combustion of all fuel injected therein at substantially full engine load.
Claim 9
Dependent Claim
124 words
In an engine which includes a combustion region where air can be burned with fuel and piston means that can be moved by the products of combustion, the improvement comprising: a target in said combustion region; and a fuel injector which includes a pump and a nozzle that is directed at said target, said nozzle being constructed to direct a narrow high velocity stream of fuel at said target so that the fuel is atomized and dispersed only after impacting the target; the tip of said nozzle from which the fuel stream emerges being located outside the walls of said combustion region, and said combustion region walls having a small hole located between the nozzle tip and the target for passing the fuel stream.
Claim 10
Dependent Claim
124 words
In an engine which includes a combustion region where air can be burned with fuel and piston means that can be moved by the products of combustion, the improvement comprising: a target in said combustion region; and a fuel injector which includes a pump and a nozzle that is directed at said target, said nozzle being constructed to direct a narrow high velocity stream of fuel at said target so that the fuel is atomized and dispersed only after impacting the target; the tip of said nozzle from which the fuel stream emerges being located outside the walls of said combustion region, and said combustion region walls having a small hole located between the nozzle tip and the target for passing the fuel stream.
Claim 11
Dependent Claim
108 words
An engine comprising: a cylinder with first and second end portions; piston means mounted in said cylinder to move towards and away from said first cylinder end portion; walls defining a combustion chamber with a constricted passage in communication with said first cylinder end portion; means for purging said chamber and adding fuel thereto in synchronism with movement of said piston; and a valve including a port in communication with said chamber; the walls of said chamber including a pair of plate-like walls, each having a plurality of holes, one of said walls forming said constricted passage and the other wall being in communication with said valve port.
Claim 12
Dependent Claim
108 words
An engine comprising: a cylinder with first and second end portions; piston means mounted in said cylinder to move towards and away from said first cylinder end portion; walls defining a combustion chamber with a constricted passage in communication with said first cylinder end portion; means for purging said chamber and adding fuel thereto in synchronism with movement of said piston; and a valve including a port in communication with said chamber; the walls of said chamber including a pair of plate-like walls, each having a plurality of holes, one of said walls forming said constricted passage and the other wall being in communication with said valve port.
Claim 13
Dependent Claim
122 words
In an engine which includes a cylinder region and a piston device that moves within the cylinder region, the improvement comprising: walls defining a combustion chamber, including a wall with a plurality of holes communicating with said cylinder region, said combustion chamber being insulatingly mounted to minimize the loss of heat from the walls thereof to the surroundings; and means for applying air and fuel to said chamber, so that the mixture thereof can ignite and burn within the chamber and the combustion products can pass through said holes into the cylinder region; the minimum volume in said cylinder region being greater than the volume of the combustion chamber, whereby to reduce the pressure and temperature of gas in the cylinder region.
Claim 14
Dependent Claim
122 words
In an engine which includes a cylinder region and a piston device that moves within the cylinder region, the improvement comprising: walls defining a combustion chamber, including a wall with a plurality of holes communicating with said cylinder region, said combustion chamber being insulatingly mounted to minimize the loss of heat from the walls thereof to the surroundings; and means for applying air and fuel to said chamber, so that the mixture thereof can ignite and burn within the chamber and the combustion products can pass through said holes into the cylinder region; the minimum volume in said cylinder region being greater than the volume of the combustion chamber, whereby to reduce the pressure and temperature of gas in the cylinder region.
Claim 15
Dependent Claim
91 words
An engine comprising: a cylinder with first and second end portions; piston means mounted in said cylinder to move towards and away from said first cylinder end portion; walls defining a combustion chamber with a constricted passage in communication with said first cylinder end portion; means for purging said chamber and adding fuel thereto in synchronism with movement of said piston; and a valve including a port in comunication with said chamber; the walls of said chamber including a wall having a plurality of holes in communication with said valve port.
Claim 16
Dependent Claim
91 words
An engine comprising: a cylinder with first and second end portions; piston means mounted in said cylinder to move towards and away from said first cylinder end portion; walls defining a combustion chamber with a constricted passage in communication with said first cylinder end portion; means for purging said chamber and adding fuel thereto in synchronism with movement of said piston; and a valve including a port in comunication with said chamber; the walls of said chamber including a wall having a plurality of holes in communication with said valve port.
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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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |