US3851629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling installation for piston internal combustion engines
Assignee: Bayerische Motoren Werke AG
•
Filing: 1973-02-09
•
Granted: 1974-12-03
•
Expires: 1993-02-09
Abstract
Abstract A cooling circulation system for piston internal combustion engines with a cooling jacket and a control system which interrupts the cooling medium circulation through the cooling jacket at least within the area of the combustion zones up to a first predetermined limit value of the temperature of the engine and/or of the time after the start of the engine, which above the first predetermined limit value at first limits the same to a closed circulation in by-passing relationship to a radiator and avoiding fresh water exchange, and which above a second further predetermined limit value incorporates into the cooling medium circulation the radiator, a heater-heat-exchanger and/or the fresh water exchange; the control system thereby includes a cooling medium valve and a three-way thermostat each with a separate control element, for example, in the form of an expansion element, of which the cooling medium valve is actuated upon reaching the first limit value and the three-way thermostat upon reaching the second limit value.
Inventors
- 👤 B Mayr
- 👤 R Henning
- 👤 E Schweiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:56
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/14; F01P7/16; F01P2025/00; F01P2025/08; F01P2025/30; F01P2025/32; F01P2025/34; F01P2025/36; F01P2025/50
Claims Analysis
Total Claims: 42
Claim 1
Independent Claim
169 words
A circulatory cooling installation for piston internal combustion engines having combustion zones, the installation comprising a cooling jacket means and a control means which is operable to interrupt the cooling medium circulation through the cooling jacket means at least within the area of the combustion zones up to a predetermined first limit value, which above the first predetermined limit value is operable to limit the circulation at first to a closed circulation in by-passing relationship to a radiator and under avoidance of a fresh water exchange, and which above a further predetermined limit value is operable to include into the cooling medium circulation at least one of radiator, fresh water exchange and a heater heat-exchanger means, characterized in that the control means includes in effect a cooling medium valve means and a three-way thermostat means each having a separate control element, of which the cooling medium valve means is actuated upon reaching the first limit value and the three-way thermostat means is actuated upon reaching the further limit value.
Claim 2
Dependent Claim
169 words
A circulatory cooling installation for piston internal combustion engines having combustion zones, the installation comprising a cooling jacket means and a control means which is operable to interrupt the cooling medium circulation through the cooling jacket means at least within the area of the combustion zones up to a predetermined first limit value, which above the first predetermined limit value is operable to limit the circulation at first to a closed circulation in by-passing relationship to a radiator and under avoidance of a fresh water exchange, and which above a further predetermined limit value is operable to include into the cooling medium circulation at least one of radiator, fresh water exchange and a heater heat-exchanger means, characterized in that the control means includes in effect a cooling medium valve means and a three-way thermostat means each having a separate control element, of which the cooling medium valve means is actuated upon reaching the first limit value and the three-way thermostat means is actuated upon reaching the further limit value.
Claim 3
Dependent Claim
23 words
An installation according to claim 1, characterized in that the predetermined first limit value is a predetermined temperature limit value of the engine.
Claim 4
Dependent Claim
27 words
An installation according to claim 1, characterized in that the first predetermined limit value Is a predetermined value of the time after the starting of the engine.
Claim 5
Dependent Claim
23 words
An installation according to claim 3, characterized in that the predetermined first limit value is a predetermined temperature limit value of the engine.
Claim 6
Dependent Claim
24 words
An installation according to claim 1, characterized in that above the further predetermined limit value, the radiator is incorporated in the cooling medium circulation.
Claim 7
Dependent Claim
39 words
An installation according to claim 5, characterized in that above the further predetermined limit value at least one of the two parts consisting of heater heat-exchanger means and fresh water exchange are additionally incorporated in the cooling medium circulation.
Claim 8
Dependent Claim
26 words
An installation according to claim 6, characterized in that both of said parts are incorporated in the cooling medium circulation above said further predetermined limit value.
Claim 9
Dependent Claim
27 words
An installation according to claim 1, characterized in that the cooling medium valve means and the three-way thermostat means are combined in a common thermostat housing means.
Claim 10
Dependent Claim
37 words
An installation according to claim 8, characterized in that the cooling medium valve means below the predetermined limit value additionally closes the cooling medium passage opened by the three-way theremostat means below the predetermined temperature limit value.
Claim 11
Dependent Claim
17 words
An installation according to claim 9, characterized in that the last-mentioned cooling medium passage is a by-pass.
Claim 12
Dependent Claim
43 words
An installation according to claim 8, characterized in that the cooling medium valve means and the three-way thermostat means include disk valve means, temperature-sensing sensing means and aperture means for the cooling medium-valve-means and the three-way thermostat means which are arranged substantially coaxially.
Claim 13
Dependent Claim
89 words
An installation according to claim 11, in which up to the first limit value at least one throttled cooling medium circulation exists in the cooling jacket means within the area outside of the combustion zones, characterized in that a cooling medium inlet and discharge aperture means for the full cooling circulation are provided in conventional places and a cooling medium discharge for the closed circulation is provided at a place near the cooling medium inlet aperture means in the area outside the combustion zones in the cooling jacket means.
Claim 14
Dependent Claim
40 words
An installation according to claim 12, characterized in that at least one of space heater means, suction pipe heater means and temperature pick-up means for auxiliary devices of the internal combustion engine are arranged in the closed cooling medium circulation.
Claim 15
Dependent Claim
27 words
An installation according to claim 13, characterized in that the space heater means is a heater heat-exchanger and the suction pipe heater means is a heating jacket.
Claim 16
Dependent Claim
30 words
An installation according to claim 12, characterized in that a space heater means, a suction pipe heater means and temperature pick-up means are arranged in the closed cooling medium circulation.
Claim 17
Dependent Claim
30 words
An installation according to claim 12, characterized in that the temperature sensing means of the cooling medium valve means is acted upon by the cooling medium of the closed circulation.
Claim 18
Dependent Claim
17 words
An installation according to claim 16, characterized in that the temperature sensing means is an expansion element.
Claim 19
Dependent Claim
74 words
An installation according to claim 17, characterized in that the cooling medium valve means and a disk valve of the three-way thermostat means controlling the cooling medium circulation from the second area of the cooling jacket means to the cooling jacket inlet are combined into a single by-pass disk valve which is actuated by the temperature sensing means of the three-way thermostat means and the temperature sensing means of the cooling medium valve means.
Claim 20
Dependent Claim
60 words
An installation according to claim 18, characterized in that the cooling medium valve means and the three-way thermostat means are arranged in a common housing means with two mutually coaxially oppositely disposed disk valves, and in that the two temperature sensing means with the disk vAlves secured thereon and with mutually opposite thermostat inlet aperture means are arranged substantially coaxially.
Claim 21
Dependent Claim
80 words
An installation according to claim 19, characterized in that a first expansion element operable as temperature sensing means carries a first valve disk of the three-way thermostat means and includes a piston rod supported at the housing means, and in that additionally said first-mentioned expansion element is operatively connected with a second expansion element which axially adjusts the second common valve disk of the three-way thermostat means and of the cooling valve means with respect to the first valve disk.
Claim 22
Dependent Claim
48 words
An installation according to claim 20, characterized in that the second-mentioned expansion element is axially adjustably guided with respect to the first-mentioned valve disk and is drivingly connected with the second valve disk, the piston rod of the second expansion element being supported at the first valve disk.
Claim 23
Dependent Claim
80 words
An installation according to claim 21, characterized in that the second valve disk is acted upon in the closing direction by a coil spring which is supported against a connecting member secured at the first valve disk, and is operatively connected with the second expansion element by a connecting means which is slidingly guided at one of the two parts consisting of the second valve disk and the second expansion element, supported against an abutment in the direction of movement.
Claim 24
Dependent Claim
57 words
An installation according to claim 8, characterized in that the cooling medium valve means below the predetermined limit value additionally closes the cooling medium passage opened by the three-way thermostat means below the predetermined temperature limit value whereby a cooling medium from the closed circulation acts upon the temperature sensing means of the cooling medium valve means.
Claim 25
Dependent Claim
18 words
An installation according to claim 23, characterized in that the last-mentioned closed circulation terminates in the return line.
Claim 26
Dependent Claim
34 words
An installation according to claim 23, characterized in that the last-mentioned closed circulation terminates either upstream of or at a place at which is located the temperature-sensing means of the cooling medium valve means.
Claim 27
Dependent Claim
36 words
An installation according to claim 1, characterized in that a cooling medium pump means operable to be turned off up to reaching the first limit value is provided in lieu of the cooling medium valve means.
Claim 28
Dependent Claim
37 words
An installation according to claim 1, characterized in that the cooling medium valve means below the predetermined limit value additionally closes the cooling medium passage opened by the three-way thermostat means below the predetermined temperature limit value.
Claim 29
Dependent Claim
17 words
An installation according to claim 27, characterized in that the last-mentioned cooling medium passage is a by-pass.
Claim 30
Dependent Claim
42 words
An installation according to claim 1, characterized in that the cooling medium valve means and the three-way thermostat means include disk valve means, temperature-sensing means and aperture means for the cooling medium-valve-means and the three-way thermostat means which are arranged substantially coaxially.
Claim 31
Dependent Claim
30 words
An installation according to claim 29, characterized in that the parts of the cooling medium valve means and the three-way thermostat means are arranged in a common thermostat housing means.
Claim 32
Dependent Claim
89 words
An installation according to claim 1, in which up to the first limit value at least one throttled cooling medium circulation exists in the cooling jacket means within the area outside of the combustion zones, characterized in that a cooling medium inlet and discharge aperture means for the full cooling circulation are provided in conventional places and a cooling medium discharge for the closed circulation is provided at a place near the cooling medium inlet aperture means in the area outside the combustion zones in the cooling jacket means.
Claim 33
Dependent Claim
40 words
An installation according to claim 31, characterized in that at least one of space heater means, suction pipe heater means and tempErature pick-up means for auxiliary devices of the internal combustion engine are arranged in the closed cooling medium circulation.
Claim 34
Dependent Claim
27 words
An installation according to claim 32, characterized in that the space heater means is a heater heat-exchanger and the suction pipe heater means is a heating jacket.
Claim 35
Dependent Claim
30 words
An installation according to claim 31, characterized in that a space heater means, a suction pipe heater means and temperature pick-up means are arranged in the closed cooling medium circulation.
Claim 36
Dependent Claim
40 words
An installation according to claim 31, with temperature sensing means for the cooling medium valve means, characterized in that the temperature sensing means of the cooling medium valve means is acted upon by the cooling medium of the closed circulation.
Claim 37
Dependent Claim
17 words
An installation according to claim 35, characterized in that the temperature sensing means is an expansion element.
Claim 38
Dependent Claim
73 words
An installation according to claim 29, characterized in that the cooling medium valve means and a disk valve of the three-way thermostat means controlling the cooling medium circulation from the second area of the cooling jacket means to the cooling jacket inlet are combined into a single by-pass disk valve which is actuated by temperature sensing means of the three-way thermostat means and the temperature sensing means of the cooling medium valve means.
Claim 39
Dependent Claim
60 words
An installation according to claim 37, characterized in that the cooling medium valve means and the three-way thermostat means are arranged in a common housing means with two mutually coaxially oppositely disposed disk valves, and in that the two temperature sensing means with the disk valves secured thereon and with mutually opposite thermostat inlet aperture means are arranged substantially coaxially.
Claim 40
Dependent Claim
80 words
An installation according to claim 38, characterized in that a first expansion element operable as temperature sensing means carries a first valve disk of the three-way thermostat means and includes a piston rod supported at the housing means, and in that additionally said first-mentioned expansion element is operatively connected with a second expansion element which axially adjusts the second common valve disk of the three-way thermostat means and of the cooling valve means with respect to the first valve disk.
Claim 41
Dependent Claim
48 words
An installation according to claim 39, characterized in that the second-mentioned expansion element is axially adjustably guided with respect to the first-mentioned valve disk and is drivingly connected with the second valve disk, the piston rod of the second expansion element being supported at the first valve disk.
Claim 42
Dependent Claim
80 words
An installation according to claim 40, characterized in that the second valve disk is acted upon in the closing direction by a coil spring which is supported against a connecting member secured at the first valve disk, and is operatively connected with the second expansion element by a connecting means which is slidingly guided at one of the two parts consisting of the second valve disk and the second expansion element, supported against an abutment in the direction of movement.
References Cited (Backward Citations)
US1328855A
Cited
US1767598A
Cited
US1848987A
Cited
US2038193A
Cited
GB421701A
Cited
US2086440A
Cited
US2468735A
Cited
US2445684A
Cited
US2706085A
Cited
US2749049A
Cited
US3313483A
Cited
US3211374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |