US3703825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion microwave diagnostic system
Assignee: Individual
•
Filing: 1971-04-27
•
Granted: 1972-11-28
•
Expires: 1991-04-27
Abstract
Abstract Methods to resonate the combustion chamber of internal combustion engines at radio frequencies, for the purpose of bottom dead center measurement at all available engine rpm are disclosed. Methods to employ the Q value of radio frequency resonances in combination with electron producing standard fuels for mechanical and electrical measurements within and near the combustion chamber, at all available rpm, are also disclosed. The basic system employed in the measurements comprises a turnable source of coherent radio frequency energy and a hybrid transmission line to convey the radio frequency energy into the combustion chamber. It is also used to detect the energy reflected back from the combustion chamber. The method for detecting bottom dead center requires changing the transmitted frequency so that a resonance occurs at precisely the maximum displacement of the piston during it''s stroke. The method for determining the properties of materials requires a comparison between the Q value with standard electron producing fuel and the Q value of the ingredients in question.
Inventors
- 👤 Angelo Louis Merlo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:01
CPC Classifications
G; G01; G01M; G01M15/00; G01M15/04; G01M15/06; G01M15/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
The method of measuring the time of occurrence of bottom dead center of the angular displacement of the piston of an internal combustion engine at all available rpm comprising the steps of generating an externally controlled ultra high and microwave radio frequency wave, radiating said wave into the combustion chamber of said engine, detecting a resonance of said wave reflected from said chamber, changing the wavelength of said wave to cause the overlap in time of the selected resonance mode excited by the piston moving in the ''''down'''' direction with said same mode excited by said piston moving in the ''''up'''' direction, time of said overlap then being coincident with the time of bottom dead center, and essentially placing said resonance at the point of maximum displacement of said piston at its turn around point.
Claim 2
Independent Claim
135 words
The method of measuring the time of occurrence of bottom dead center of the angular displacement of the piston of an internal combustion engine at all available rpm comprising the steps of generating an externally controlled ultra high and microwave radio frequency wave, radiating said wave into the combustion chamber of said engine, detecting a resonance of said wave reflected from said chamber, changing the wavelength of said wave to cause the overlap in time of the selected resonance mode excited by the piston moving in the ''''down'''' direction with said same mode excited by said piston moving in the ''''up'''' direction, time of said overlap then being coincident with the time of bottom dead center, and essentially placing said resonance at the point of maximum displacement of said piston at its turn around point.
Claim 3
Dependent Claim
101 words
The method according to claim 1 wherein the resonance mode employed is the TE111 mode, said mode having resonant frequency dependent upon three dimensions, said mode resonating at only one displacement of the piston of internal combustion engines, said mode having electric field perpendicular to axis of cylinder of said engines, said electric field having terminations on charges existing on opposite walls of the cylinder, said mode having conduction currents existing in the walls of said cylinder, said conduction currents traversing said pistons contact with said cylinder wall completing paths to said charges, said electric field surrounded by circular magnetic field.
Claim 4
Dependent Claim
33 words
The method according to claim 1 wherein the time of occurrence between successive bottom dead centers is employed to be divided in two, in order to identify the time of top dead center.
Claim 5
Independent Claim
89 words
The method of measuring the number of charged particles within the combustion chamber of an internal combustion engine at all available rpm, comprising the steps of generating an externally controlled coherent ultra high and microwave radio frequency wave into said chamber of said engine, detecting a particular resonance of said wave reflected from said chamber, measuring the Q value of said resonance, comparing said Q value with the Q value of the said resonance excited in the presence of standard fuel containing a calculated predetermined quantity of charged particles.
Claim 6
Independent Claim
89 words
The method of measuring the number of charged particles within the combustion chamber of an internal combustion engine at all available rpm, comprising the steps of generating an externally controlled coherent ultra high and microwave radio frequency wave into said chamber of said engine, detecting a particular resonance of said wave reflected from said chamber, measuring the Q value of said resonance, comparing said Q value with the Q value of the said resonance excited in the presence of standard fuel containing a calculated predetermined quantity of charged particles.
Claim 7
Dependent Claim
22 words
The method according to claim 4 wherein the comparison standard is a combustion chamber containing an absence of any fuel and ignition.
Claim 8
Dependent Claim
132 words
The method according to claim 5 wherein the resonance mode is the TM010 mode, said mode having constant field strength in two dimensions, said mode having resonant frequency dependent only upon one dimension, said dimension being the radius of the cylinder, said mode remaining in resonance throughout all values of displacement of the piston of internal combustion engines, said mode having electric field coincident with the axis of the cylinder of said engines, said electric field having terminations on charges existing on center of said piston and also on the opposite end of said cylinder, said mode having conduction currents existing in the walls of said cylinder, said conduction currents traversing said pistons contact with said cylinder wall completing paths to said charges, said axial electric field surrounded by circular magnetic field.
Claim 9
Dependent Claim
132 words
The method according to claim 4 wherein the resonance mode is the TM010 mode, said mode having constant field strength in two dImensions, said mode having resonant frequency dependent only upon one dimension, said dimension being the radius of the cylinder, said mode remaining in resonance throughout all values of displacement of the piston of internal combustion engines, said mode having electric field coincident with the axis of the cylinder of said engines, said electric field having terminations on charges existing on center of said piston and also on the opposite end of said cylinder, said mode having conduction currents existing in the walls of said cylinder, said conduction currents traversing said pistons contact with said cylinder wall completing paths to said charges, said axial electric field surrounded by circular magnetic field.
References Cited (Backward Citations)
US2959732A
Cited
US2951473A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |