US4548187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine for alternative fuels
Assignee: J-JET KONSTRUKTIONSA JOINT-STOCK Co OF SWEDEN
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Filing: 1982-10-15
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Granted: 1985-10-22
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Expires: 2002-10-15
Abstract
Abstract A method of running an internal combustion engine with alternative fuels such as high or low octane gasoline, paraffin, diesel oil, ethanol, methanol or similar fuels and/or mixtures thereof and combustible gases such as LP-gas and the like at unchanged compression ratio, and which each motor cylinder can be supplied with a further medium besides the fuel for running of the engine and the fuel is heated by the heat from the exhaust system (22, 23). The invention also refers to an internal combustion engine for alternative fuels. This object has been achieved by proportioning and distributing the fuel to each motor cylinder in relation to the air sucked up and that the fuel before entering the motor cylinder is heated to a temperature between its flame temperature and above its evaporation temperature and that the evaporated fuel is fed to the respective motor cylinder preferably at a flat tangential interjection angle and when using low octane fuel as an extra medium water or a mixture of water and an antifreezing agent is injected in controlled amounts at a steeper injection angle inside the path of the fuel.
Inventors
- 👤 John Olsson
- 👤 Bertil Olsson
- 👤 Gunnar Olsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:43
CPC Classifications
F; F02; F02M; F02M25/00; F02M25/022; F02M25/025; F02M25/028; F02B; F02B69/00; F02B69/02; F02B69/04; F02D; F02D19/00; F02D19/06; F02D19/0602; F02D19/0605; F02D19/0626; F02D19/0628; F02D19/0639; F02D19/0649; F02D19/0652; F02D19/0655; F02D19/0663; F02D19/0673; F02D19/0678; F02D19/0686; F02D19/0697; F02D19/08; F02D19/12; F02M31/00; F02M31/02; F02M31/16; F02M31/18; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/12; F02B2075/125; F02B3/00; F02B3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
256 words
In an internal combustion engine for alternative fuels and operated at the same compression ratio, wherein the fuel is fed to the cylinders through fuel feed lines and is preheated with heat from the exhaust system and an additional medium which is water or water in combination with other ingredients is fed to the cylinders, the improvement comprising: a fuel feeding device in the fuel feed lines for proportioning and distributing the fuel to each cylinder in response to the air flow in the air intake; means for detecting the air flow to the cylinders operatively connected to said fuel feeding device to control said fuel feeding device; means for feeding the additional medium to each cylinder; heat exchange means for each cylinder operatively arranged in the exhaust system for heating the fuel prior to entrance into each cylinder to a temperature between its flame temperature and above its evaporation temperature; a fuel injection means in each inlet channel of the engine connected to the fuel line from the proportioning and distributing device and directed toward the respective inlet valve opening to inject fuel fed therethrough at a substantially flat, tangential angle with respect to the wall of the respective cylinder; and a feeding nozzle for said additional medium in each inlet channel connected to said means for feeding the additional medium and directed toward the respective inlet valve opening to inject the additional medium therethrough inside the path of the fuel at a steeper angle with respect to the cylinder wall than said fuel injection.
Claim 2
Dependent Claim
256 words
In an internal combustion engine for alternative fuels and operated at the same compression ratio, wherein the fuel is fed to the cylinders through fuel feed lines and is preheated with heat from the exhaust system and an additional medium which is water or water in combination with other ingredients is fed to the cylinders, the improvement comprising: a fuel feeding device in the fuel feed lines for proportioning and distributing the fuel to each cylinder in response to the air flow in the air intake; means for detecting the air flow to the cylinders operatively connected to said fuel feeding device to control said fuel feeding device; means for feeding the additional medium to each cylinder; heat exchange means for each cylinder operatively arranged in the exhaust system for heating the fuel prior to entrance into each cylinder to a temperature between its flame temperature and above its evaporation temperature; a fuel injection means in each inlet channel of the engine connected to the fuel line from the proportioning and distributing device and directed toward the respective inlet valve opening to inject fuel fed therethrough at a substantially flat, tangential angle with respect to the wall of the respective cylinder; and a feeding nozzle for said additional medium in each inlet channel connected to said means for feeding the additional medium and directed toward the respective inlet valve opening to inject the additional medium therethrough inside the path of the fuel at a steeper angle with respect to the cylinder wall than said fuel injection.
Claim 3
Dependent Claim
29 words
An internal combustion engine as claimed in claim 1 and further comprising: an electrical heating device operatively connected to said fuel line to completely or partly preheat said fuel.
Claim 4
Dependent Claim
47 words
An internal combustion engine as claimed in claim 1 and further comprising: each fuel injection means has an injection part having double walls spaced to provide an annulus between the walls; and means for conducting exhaust gases to said annulus to flow therethrough to heat said fuel.
Claim 5
Dependent Claim
31 words
An internal combustion engine as claimed in claim 1 and further comprising: said fuel injection means between the exhaust system and the inlet channel is insulated externally by a ceramic material.
Claim 6
Dependent Claim
44 words
An internal combustion engine as claimed in claim 1 and further comprising: an exhaust spacer member between the cylinder head and the exhaust manifold; and said heat exchanger comprises an integrated part of said fuel injection means positioned partly in said exhaust spacer member.
Claim 7
Dependent Claim
37 words
An internal combustion engine as claimed in claim 1 and further comprising: an inlet spacer member provided between the cylinder head and intake manifold; and said fuel feed line is partly positioned in said inlet spacer member.
Claim 8
Dependent Claim
37 words
An internal combustion engine as claimed in claim 5 and further comprising: an inlet spacer member provided between the cylinder head and intake manifold; and said fuel feed line is partly positioned in said inlet spacer member.
Claim 9
Dependent Claim
17 words
An internal combustion engine as claimed in claim 7 wherein: said spacer members comprise a single member.
Claim 10
Dependent Claim
28 words
An internal combustion engine as claimed in claim 1 and further comprising: said heat exchanger is part of the fuel line and is disposed in the exhaust manifold.
Claim 11
Dependent Claim
28 words
An internal combustion engine as claimed in claim 1 and further comprising: said heat exchanger is part of the fuel line and is disposed in the cylinder head.
Claim 12
Dependent Claim
15 words
An internal combustion engine as claimed in claim 1 wherein said additional medium is water.
Claim 13
Dependent Claim
17 words
An internal combustion engine as claimed in claim 1 where said additional medium is water and antifreeze.
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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) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |