US3844119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control device for a cleaning installation inserted into the exhaust gas system
Assignee: Dr Ing HCF Porsche AG
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Filing: 1972-07-27
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Granted: 1974-10-29
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Expires: 1992-07-27
Abstract
Abstract A control device for a cleaning installation which is interconnected in the exhaust gas system of an internal combustion engine and absorbs the harmful substances of the exhaust gases; the control device thereby controls the throughflow of the exhaust gases through the cleaning installation as a function of the operating condition of the internal combustion engine and utilizes for this control a flow-controlled exhaust gas conduit system; the flow-controlled exhaust gas conduit system is arranged between an exhaust gas manifold and a catalyst serving as cleaning installation and is itself controlled automatically by the flow resistance of the catalyst and by exhaust gas channels of different cross sections and/or configurations interconnected in the exhaust gas conduit system.
Inventors
- 👤 B Herrbrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:26
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/18; F01N3/20; F01N3/2053; F01N2410/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10T; Y10T137/00; Y10T137/206; Y10T137/2267
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
231 words
A control system for a cleaning installation interconnected in an exhaust gas system of an internal combustion engine including an exhaust gas manifold, a pair of exhaust gas lines operably connected to said exhaust gas manifold, and a catalyst means connected to one of said pair of exhaust gas lines, the control system being operable to absorb the harmful substances of the exhaust gases by controlling the through-flow of the exhaust gases through the cleaning installation as a function of the operating condition of the internal combustion engine, characterized in that the control system includes a flowcontrolled exhaust gas conduction means connected between the exhaust gas manifold and the pair of exhaust gas lines, said exhaust gas conduction means including a first and second exhaust gas channel means connected to the exhaust gas manifold for directing the flow of exhaust gases from the exhaust manifold to the pair of exhaust gas lines, said first exhaust gas channel means being provided with an inlet and discharge opening lying in the flow direction of the exhaust gases flowing out of the exhaust gas manifold, said second exhaust gas channel means being provided with an inlet and discharge opening lying substantially perpendicular to the flow direction of the exhaust gases flowing out of said exhaust gas manifold, said second exhaust gas channel means having a larger cross-section than said first exhaust gas channel means.
Claim 2
Dependent Claim
231 words
A control system for a cleaning installation interconnected in an exhaust gas system of an internal combustion engine including an exhaust gas manifold, a pair of exhaust gas lines operably connected to said exhaust gas manifold, and a catalyst means connected to one of said pair of exhaust gas lines, the control system being operable to absorb the harmful substances of the exhaust gases by controlling the through-flow of the exhaust gases through the cleaning installation as a function of the operating condition of the internal combustion engine, characterized in that the control system includes a flowcontrolled exhaust gas conduction means connected between the exhaust gas manifold and the pair of exhaust gas lines, said exhaust gas conduction means including a first and second exhaust gas channel means connected to the exhaust gas manifold for directing the flow of exhaust gases from the exhaust manifold to the pair of exhaust gas lines, said first exhaust gas channel means being provided with an inlet and discharge opening lying in the flow direction of the exhaust gases flowing out of the exhaust gas manifold, said second exhaust gas channel means being provided with an inlet and discharge opening lying substantially perpendicular to the flow direction of the exhaust gases flowing out of said exhaust gas manifold, said second exhaust gas channel means having a larger cross-section than said first exhaust gas channel means.
Claim 3
Dependent Claim
23 words
A control device according to claim 1, characterized in that said control means is controlled by the flow resistance of the catalyst means.
Claim 4
Dependent Claim
61 words
A control device according to claim 2, characterized in that the first and second exhaust gas channel means terminate in a connecting place of two further exhaust gas channel means which in turn are connected, respectively, with the pair of exhaust gas lines leadIng into the atmosphere, the catalyst means being inserted into said one of the pair of exhaust lines.
Claim 5
Dependent Claim
46 words
A control device according to claim 3, characterized in that the second exhaust channel means is directed toward the exhaust gas line provided with the catalyst means and the first exhaust gas channel means is directed toward the exhaust gas line leading directly into the atmosphere.
Claim 6
Dependent Claim
23 words
A control device according to claim 4, characterized in that the flow-controlled exhaust gas conduction means is constituted by an independent structural part.
Claim 7
Dependent Claim
17 words
A control device according to claim 5, characterized in that said structural part is a self-contained sub-assembly.
Claim 8
Dependent Claim
28 words
A control device according to claim 6, characterized in that said exhaust gas conduction means is detachably connected with the exhaust gas manifold and the exhaust gas line.
Claim 9
Dependent Claim
23 words
A control device according to claim 1, characterized in that the flow-controlled exhaust gas conduction means is constituted by an independent structural part.
Claim 10
Dependent Claim
17 words
A control device according to claim 8, characterized in that said structural part is a self-contained sub-assembly.
Claim 11
Dependent Claim
28 words
A control device according to claim 3, characterized in that said exhaust gas conduction means is detachably connected with the exhaust gas manifold and the exhaust gas line.
Claim 12
Dependent Claim
27 words
A control device according to claim 1, wherein two additional channel means are provided, the additional channel means being connected with the pair of exhaust gas lines.
Claim 13
Dependent Claim
44 words
A control device according to claim 11, wherein said additional channel means are combined in a substantially V-shape with the center axes of the additional channel means intersecting within the area of the discharge openings of the first and second exhaust gas channel means.
References Cited (Backward Citations)
FR1216496A
Cited
US3037344A
Cited
US3144309A
Cited
US3503714A
Cited
DE1476508A1
Cited
US3708961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |