US3817224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for continuously controlling a speed-dependent factor
Assignee: Kloeckner Humboldt Deutz AG
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Filing: 1972-02-15
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Granted: 1974-06-18
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Expires: 1992-02-15
Abstract
Abstract Method of and apparatus for continuously checking a speeddependent factor, especially for use in connection with internal combustion engines, according to which the speed-dependent factor to be checked is continuously compared with a second speeddependent factor having a characteristic similar to that of the speed-dependent factor to be checked. When the difference between the two speed-dependent factors exceeds a predetermined value, a differential measuring system gives off a warning signal or stops the operation of the circuits alltogether.
Inventors
- 👤 H Pluequet
- 👤 A Reske
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:12
CPC Classifications
F; F02; F02B; F02B77/00; F02B77/08; F01; F01P; F01P11/00; F01P11/14; F01P11/16; F01P5/00; F01P5/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
150 words
In combination with a first working circuit having a speeddependent factor which has to be checked continuously, a second working circuit having a speed-dependent factor of a characteristic similar to the characteristic of the speeddependent factor to be checked continuously, and a differential measuring system operatively connected to said first and second circuits and operable to indicate a difference in excess of a permissible difference in the conditions of operation of said two circuits, said first and second working circuits being cooling fluid circuits, each of said cooling fluid circuits being independent of the other and including a cooling water pump and conduit means respectively leading from said cooling water circuits to different areas of said differential measuring system to convey fluid pressure thereto for actuating said differential system in response to a non-permissible condition of operation in the circuit the speed-dependent factor of which is to be checked continuously.
Claim 2
Dependent Claim
150 words
In combination with a first working circuit having a speeddependent factor which has to be checked continuously, a second working circuit having a speed-dependent factor of a characteristic similar to the characteristic of the speeddependent factor to be checked continuously, and a differential measuring system operatively connected to said first and second circuits and operable to indicate a difference in excess of a permissible difference in the conditions of operation of said two circuits, said first and second working circuits being cooling fluid circuits, each of said cooling fluid circuits being independent of the other and including a cooling water pump and conduit means respectively leading from said cooling water circuits to different areas of said differential measuring system to convey fluid pressure thereto for actuating said differential system in response to a non-permissible condition of operation in the circuit the speed-dependent factor of which is to be checked continuously.
Claim 3
Dependent Claim
16 words
A combination according to claim 1, in which one of said working circuits includes a simulator.
Claim 4
Dependent Claim
27 words
A combination according to claim 1, in which one of said circuits includes a cooling water pump and the other circuit includes a considerably smaller model pump.
Claim 5
Dependent Claim
57 words
A combination according to claim 1, in which said first working circuit includes an internal combustion engine having an intake manifold, and in which said second working circuit includes a cooling fluid circuit under pressure, and separate conduit means respectively connecting said intake manifold and said cooling water circuit with different areas of said differential measuring system.
Claim 6
Dependent Claim
17 words
A combination according to claim 1, which includes constricting means respectively inserted in said cooling fluid circuits.
Claim 7
Dependent Claim
45 words
A combination according to claim 1, which includes through-flow meter means respectively arranged in said circuits, generator means having said flow meters coupled thereto, said differential measuring system including a bridge circuit, and conductor means respectively leading from said generator means to said bridge circuit.
Claim 8
Dependent Claim
103 words
A combination according to claim 1, in which said first working circuit includes an internal combustion engine and a generator drivingly connected thereto, and in which said second working circuit includes a cooling fluid cIrcuit with a fluid pump drivingly connected to said internal combustion engine, said cooling fluid circuit also including a pressure measuring device having an electric pick-up associated with said pressure measuring device, a source of current electrically connected to said pick-up, and a differential measuring system electrically connected to said generator and said pick-up and operable to compare the voltage at said generator with the voltage of said pick-up.
Claim 9
Dependent Claim
71 words
A combination according to claim 1, in which said first working circuit includes an internal combustion engine and a first generator drivingly connected thereto; and in which said second working circuit includes a pressure fluid cooling system with a flow meter, and a second generator coupled to said flow meter; and a bridge circuit means electrically connected to said first and second generator means for comparing their voltages with each other.
Claim 10
Dependent Claim
25 words
A combination according to claim 8, in which said pressure fluid cooling system includes a pressure fluid by-pass line having said flow meter arranged therein.
Claim 11
Dependent Claim
30 words
A combination according to claim 1, in which said differential measuring system includes means operable in response to a settable rated value being realized to give off a warning signal.
Claim 12
Dependent Claim
31 words
A combination according to claim 1, in which said differential measuring system includes means operable in response to a settable rated value being realized to stop operation of said working circuits.
References Cited (Backward Citations)
US2655109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-17 | 1977-12-17 | 1978-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-17 | 1981-12-17 | 1982-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-17 | 1985-12-17 | 1986-06-18 | $7700.00 | Window Closed / Lapsed |