US4034728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Installation for achieving an air/fuel mixture
Assignee: Daimler Benz AG
•
Filing: 1975-01-09
•
Granted: 1977-07-12
•
Expires: 1995-01-09
Abstract
Abstract An installation for producing an air/fuel mixture for a mixture-aspirating internal combustion engine, which includes a fuel atomizer equipped with at least one fuel nozzle terminating in the air guide channel and traversed by the sucked-in air; certain surfaces arranged in the flow path of the mixture are thereby at different electric potentials whereby an electrode electrically insulated with respect to the fuel nozzle or nozzles is arranged in front of each of the nozzles with the potential difference applied between the electrode, on the one hand, and the fuel nozzle on the other.
Inventors
- 👤 Helmut Saufferer
- 👤 Karl Willmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:31
CPC Classifications
F; F02; F02M; F02M27/00; F02M27/04; Y; Y10; Y10S; Y10S261/00; Y10S261/39; Y10S261/80
Claims Analysis
Total Claims: 66
Claim 1
Independent Claim
132 words
An installation for producing an air/fuel mixture for a mixture-aspirating, internal combustion engine comprising air conduction channel means through which air is sucked in, fuel atomizer means having at least one fuel nozzle means terminating in the air conduction channel means and traversed by the sucked-in air, and surface means arranged in the flow path of the mixture which are at different electrical potentials, said surface means including an electrode means electrically insulated with respect to the fuel nozzle means and arranged within the fuel atomizer means at a distance from each fuel nozzle means, the electrode means being arranged for substantially surrounding the fuel nozzle means with the potential difference being applied between the electrode means and the fuel nozzle means for providing an electrostatic field surrounding the fuel nozzle means.
Claim 2
Dependent Claim
132 words
An installation for producing an air/fuel mixture for a mixture-aspirating, internal combustion engine comprising air conduction channel means through which air is sucked in, fuel atomizer means having at least one fuel nozzle means terminating in the air conduction channel means and traversed by the sucked-in air, and surface means arranged in the flow path of the mixture which are at different electrical potentials, said surface means including an electrode means electrically insulated with respect to the fuel nozzle means and arranged within the fuel atomizer means at a distance from each fuel nozzle means, the electrode means being arranged for substantially surrounding the fuel nozzle means with the potential difference being applied between the electrode means and the fuel nozzle means for providing an electrostatic field surrounding the fuel nozzle means.
Claim 3
Dependent Claim
23 words
An installation according to claim 1, characterized in that the electrode means is a porous member permeable to the flow of the air.
Claim 4
Dependent Claim
29 words
An installation according to claim 2, characterized in that the electrode means is an electrode basket means arranged at a distance in front of and surrounding the nozzle means.
Claim 5
Dependent Claim
45 words
An installation according to claim 2, characterized in that a plurality of fuel nozzle means are provided in the air conduction channel means along a closed line, each nozzle means having a opening normal arranged at an angle to the inflow direction of the air.
Claim 6
Dependent Claim
25 words
An installation according to claim 4, characterized in that the nozzle means have the opening normal directed substantially radially from the inside toward the outside.
Claim 7
Dependent Claim
20 words
An installation according to claim 1, characterized in that the electrode means is permeable to the flow of the air.
Claim 8
Dependent Claim
23 words
An installation according to claim 1, characterized in that the electrode means is arranged at a distance in front of each nozzle means.
Claim 9
Dependent Claim
40 words
An installation according to claim 1, characterized in that several fuel nozzle means are provided, and the electrode means is arranged mounted electrically insulated with respect to the several fuel nozzle means at a distance from each fuel nozzle means.
Claim 10
Dependent Claim
26 words
An installation according to claim 1, characterized in that the field strength of the electrostatic field between the nozzle means and the electrode means is adjustable.
Claim 11
Dependent Claim
33 words
An installation according to claim 9, characterized in that the field strength of said electrostatic field is variable as a function of an indication of at least one operating magnitude of the engine.
Claim 12
Dependent Claim
19 words
An installation according to claim 9, characterized in that the field strength is adjustable by changing the applied potential.
Claim 13
Dependent Claim
36 words
An installation according to claim 11, with a fuel supply means, characterized in that at least two nozzle means are provided which are operable to be connected with the fuel supply means in a predetermined manner.
Claim 14
Dependent Claim
16 words
An installation according to claim 12, characterized in that two groups of nozzle means are provided.
Claim 15
Dependent Claim
20 words
An installation according to claim 13, characterized in that the groups of nozzle means are of different opening cross section.
Claim 16
Dependent Claim
23 words
An installation according to claim 14, characterized in that the nozzle means are operable to be connected additively with the fuel supply means.
Claim 17
Dependent Claim
23 words
An installation according to claim 14, characterized in that the nozzle means are operable to be connected alternatively to the fuel supply means.
Claim 18
Dependent Claim
19 words
An installation according to claim 12, characterized in that the nozzle means are of mutually different opening cross section.
Claim 19
Dependent Claim
41 words
An installation according to claim 12, characterized in that the fuel nozzle means are electrically connected with the remaining electrically conducting components of the fuel atomizer means and of the internal combustion engine so as to be at the same potential.
Claim 20
Dependent Claim
62 words
An installation according to claim 18, characterized in that several fuel nozzle means are arranged in the air conduction channel means along a closed line, whereby the opening normal of each nozzle means is arranged at an angle to the inflow direction of the air, and in that the electrode means is constructed as a flow-permeable structure extending past each nozzle means.
Claim 21
Dependent Claim
25 words
An installation according to claim 19, characterized in that the nozzle means have an opening normal directed substantially radially from the inside toward the outside.
Claim 22
Dependent Claim
16 words
An installation according to claim 20, characterized in that said nozzle means form a nozzle ring.
Claim 23
Dependent Claim
15 words
An installation according to claim 21, characterized in that said angle is an obtuse angle.
Claim 24
Dependent Claim
16 words
An installation according to claim 21, characterized in that said angle is a substantially right angle.
Claim 25
Dependent Claim
16 words
An installation according to claim 21, characterized in that said structure is an electrode basket means.
Claim 26
Dependent Claim
15 words
An installation according to claim 21, characterized in that said structure is an electrode sieve.
Claim 27
Dependent Claim
31 words
An installation according to claim 24, characterized in that the shadow surfaces of the electrode basket means are as small as possible in relation to the opening area of all meshes.
Claim 28
Dependent Claim
28 words
An installation according to claim 26, characterized in that the mesh size of the electrode basket means is essentially larger than the opening width of the nozzle means.
Claim 29
Dependent Claim
42 words
An installation according to claim 27, characterized in that the electrode basket means is so constructed and arranged relative to the nozzle ring that the opening normal of each nozzle means encounters the opening of a mesh of the electrode basket means.
Claim 30
Dependent Claim
29 words
An installation according to claim 28, characterized in that the electrode basket means is retained by way of at least one radial support arm means of electrically non-conductive material.
Claim 31
Dependent Claim
15 words
An installation according to claim 29, characterized in that several support arm means are provided.
Claim 32
Dependent Claim
40 words
An installation according to claim 29, characterized by an electrically conductive feed means between a voltage source means for the potential of the electrode basket means and the electrode basket means itself which is extended through a support arm means.
Claim 33
Dependent Claim
17 words
An installation according to claim 31, characterized in that the voltage feed means includes a shielded line.
Claim 34
Dependent Claim
19 words
An installation according to claim 32, characterized in that an ohmic resistance is connected in the voltage feed means.
Claim 35
Dependent Claim
26 words
An installation according to claim 33, characterized in that the electrode basket means is constructed cylindrically with generatrices pointing in the direction of the air flow.
Claim 36
Dependent Claim
33 words
An installation according to claim 33, characterized in that the electrode basket means is constructed at least in coarse approximation conically shaped with the cone axis disposed substantially parallel to the air flow.
Claim 37
Dependent Claim
34 words
An installation according to claim 35, characterized in that the imaginary cone apex of the electrode basket means points opposite the flow direction of the air and is arranged upstream of the nozzle ring.
Claim 38
Dependent Claim
63 words
An installation with mixture line means according to claim 31, characterized in that within the area of elbow means of the mixture line means leading to the combustion spaces of the internal combustion engine, electrode means are provided to which is applied an electric potential such that an electrostatic force acts on the droplets which is directed toward the center of the curvature.
Claim 39
Dependent Claim
33 words
An installation according to claim 37, characterized in that the field strength of said electrostatic field is variable as a function of an indication of at least one operating magnitude of the engine.
Claim 40
Dependent Claim
40 words
An installation according to claim 38, characterized in that several fuel nozzle means are provided, and the electrode means is arranged mounted electrically insulated with respect to the several fuel nozzle means at a distance from each fuel nozzle means.
Claim 41
Dependent Claim
176 words
An installation for producing an air/fuel mixture for a mixture-aspirating, internal combustion engine, which includes a fuel atomizer means equipped with at least one fuel nozzle means terminating in an air conduction channel means and traversed by the sucked-in air, and surface means arranged in the flow path of the mixture which are at different electric potentials, characterized in that an electrode means which is electrically insulated with respect to the fuel nozzle means and which forms one of said surface means, is arranged within the fuel atomizer means at a distance from each fuel nozzle means, the potential difference being applied between the electrode means, on the one hand, and the fuel nozzle means, on the other, and in that several fuel nozzle means are arranged in the air conduction channel means along a closed line, whereby the opening normal of each nozzle means is arranged at an angle now parallel to the inflow direction of the air, and in that the electrode means is constructed as a flow-permeable structure extending past each nozzle means.
Claim 42
Dependent Claim
176 words
An installation for producing an air/fuel mixture for a mixture-aspirating, internal combustion engine, which includes a fuel atomizer means equipped with at least one fuel nozzle means terminating in an air conduction channel means and traversed by the sucked-in air, and surface means arranged in the flow path of the mixture which are at different electric potentials, characterized in that an electrode means which is electrically insulated with respect to the fuel nozzle means and which forms one of said surface means, is arranged within the fuel atomizer means at a distance from each fuel nozzle means, the potential difference being applied between the electrode means, on the one hand, and the fuel nozzle means, on the other, and in that several fuel nozzle means are arranged in the air conduction channel means along a closed line, whereby the opening normal of each nozzle means is arranged at an angle now parallel to the inflow direction of the air, and in that the electrode means is constructed as a flow-permeable structure extending past each nozzle means.
Claim 43
Dependent Claim
36 words
An installation according to claim 40, with a fuel supply means, characterized in that at least two nozzle means are provided which are operable to be connected with the fuel supply means in a predetermined manner.
Claim 44
Dependent Claim
19 words
An installation according to claim 41, characterized in that the nozzle means are of mutually different opening cross section.
Claim 45
Dependent Claim
23 words
An installation according to claim 41, characterized in that the nozzle means are operable to be connected additively with the fuel supply means.
Claim 46
Dependent Claim
23 words
An installation according to claim 41, characterized in that the nozzle means are operable to be connected alternatively to the fuel supply means.
Claim 47
Dependent Claim
16 words
An installation according to claim 41, characterized in that two groups of nozzle means are provided.
Claim 48
Dependent Claim
20 words
An installation according to claim 45, characterized in that the groups of nozzle means are of different opening cross section.
Claim 49
Dependent Claim
41 words
An installation according to claim 1, characterized in that the fuel nozzle means are electrically connected with the remaining electrically conducting components of the fuel atomizer means and of the internal combustion engine so as to be at the same potential.
Claim 50
Dependent Claim
25 words
An installation according to claim 40, characterized in that the nozzle means have an opening normal directed substantially radially from the inside toward the outside.
Claim 51
Dependent Claim
16 words
An installation according to claim 40, characterized in that said nozzle means form a nozzle ring.
Claim 52
Dependent Claim
15 words
An installation according to claim 40, characterized in that said angle is an obtuse angle.
Claim 53
Dependent Claim
16 words
An installation according to claim 40, characterized in that said angle is a substantially right angle.
Claim 54
Dependent Claim
23 words
An installation according to claim 40, characterized in that the electrode means is constructed as a flow-permeable structure extending past each nozzle means.
Claim 55
Dependent Claim
16 words
An installation according to claim 52, characterized in that said structure is an electrode basket means.
Claim 56
Dependent Claim
31 words
An installation according to claim 53, characterized in that the shadow surfaces of the electrode basket means are as small as possible in relation to the opening area of all meshes.
Claim 57
Dependent Claim
28 words
An installation according to claim 53, characterized in that the mesh size of the electrode basket means is essentially larger than the opening width of the nozzle means.
Claim 58
Dependent Claim
42 words
An installation according to claim 53, characterized in that the electrode basket means is so constructed and arranged relative to the nozzle ring that the opening normal of each nozzle means encounters the opening of a mesh of the electrode basket means.
Claim 59
Dependent Claim
29 words
An installation according to claim 53, characterized in that the electrode basket means is retained by way of at least one radial support arm means of electrically non-conductive material.
Claim 60
Dependent Claim
32 words
An installation according to claim 53, characterized by an electrically conductive feed means between a voltage source means for the potential of the electrode basket means and the electrode basket means itself.
Claim 61
Dependent Claim
19 words
An installation according to claim 58, characterized in that an ohmic resistance is connected in the voltage feed means.
Claim 62
Dependent Claim
26 words
An installation according to claim 53, characterized in that the electrode basket means is constructed cylindrically with generatrices pointing in the direction of the air flow.
Claim 63
Dependent Claim
33 words
An installation according to claim 53, characterized in that the electrode basket means is constructed at least in coarse approximation conically shaped with the cone axis disposed substantially parallel to the air flow.
Claim 64
Dependent Claim
34 words
An installation according to claim 61, characterized in that the imaginary cone apex of the electrode basket means points opposite the flow direction of the air and is arranged upstream of the nozzle ring.
Claim 65
Dependent Claim
63 words
An installation with mixture line means according to claim 1, characterized in that within the area of elbow means of the mixture line means leading to the combustion spaces of the internal combustion engine, electrode means are provided to which is applied an electric potential such that an electrostatic force acts on the droplets which is directed toward the center of the curvature.
Claim 66
Dependent Claim
21 words
An installation according to claim 53, characterized by means for selectively connecting each group of nozzle means with a fuel supply.
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) | 1980-07-11 | 1981-01-10 | 1981-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-11 | 1985-01-10 | 1985-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-11 | 1989-01-10 | 1989-07-12 | $7700.00 | Window Closed / Lapsed |