US3872835A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling water circulation for a supercharged internal combustion piston engine
Assignee: Individual
•
Filing: 1973-09-04
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Granted: 1975-03-25
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Expires: 1993-09-04
Abstract
Abstract A cooling water circulatory system for a supercharged piston internal combustion engine which is equipped with a cooling water pump, a re-cooler, a feed means for the re-cooling medium, a supercharged air cooler and an expansion tank; the cooling water flow on the pressure side of the cooling water pump is thereby divided into a partial stream for cooling the supercharged air and into a partial stream for cooling the engine whereby these partial streams recombine on the suction side of the cooling water pump after passing through the supercharged air cooler and the engine, respectively; the partial stream for cooling the supercharged air is thereby cooled in the re-cooler prior to entry in the supercharged air cooler and its quantity is limited by a throttling device installed in the cooling water discharge line of the supercharged air cooler; a thermostatic valve opens up a bypass line when the engine is cold whereby a more rapid warm-up of the engine cooling water to the operating temperature is made possible.
Inventors
- 👤 Herbert Deutschmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:03
CPC Classifications
F; F01; F01P; F01P3/00; F01P3/20; F01P7/00; F01P7/14; F01P7/16; F02; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B29/0437; F02B29/0443; F01P2050/00; F01P2050/02; F01P2050/06; F01P2060/00; F01P2060/02; F02B75/00; F02B75/16; F02B75/18; F02B75/22; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
165 words
In combination with a supercharged piston internal combustion engine, a cooling water circulatory system which includes a cooling water pump, a re-cooler means, a feed means for a recooling medium and a supercharged air cooler means, characterized in that the cooling water stream is branched off on the pressure side of the cooling water pump into a first partial stream for cooling the supercharged air and into a second partial stream for cooling the engine, said partial streams recombining after passing through the supercharged air cooler means and the engine, respectively, on the suction side of the cooling water pump, the partial stream for cooling the supercharged air being cooled in the re-cooler means prior to entry in the supercharged air cooler means, a bypass line bypassing at least a part of the re-cooler means, and a thermostatic valve means opening said bypass line with a relatively cold engine whereby a faster warm-up of the engine cooling medium to its operating temperature is made possible.
Claim 2
Dependent Claim
165 words
In combination with a supercharged piston internal combustion engine, a cooling water circulatory system which includes a cooling water pump, a re-cooler means, a feed means for a recooling medium and a supercharged air cooler means, characterized in that the cooling water stream is branched off on the pressure side of the cooling water pump into a first partial stream for cooling the supercharged air and into a second partial stream for cooling the engine, said partial streams recombining after passing through the supercharged air cooler means and the engine, respectively, on the suction side of the cooling water pump, the partial stream for cooling the supercharged air being cooled in the re-cooler means prior to entry in the supercharged air cooler means, a bypass line bypassing at least a part of the re-cooler means, and a thermostatic valve means opening said bypass line with a relatively cold engine whereby a faster warm-up of the engine cooling medium to its operating temperature is made possible.
Claim 3
Dependent Claim
37 words
The combination according to claim 1, characterized by throttling means in the cooling water outlet line of the supercharged air cooler means for limiting the quantity of the partial stream for the cooling of the supercharged air.
Claim 4
Dependent Claim
16 words
The combination according to claim 2, characterized by an expansion tank means interconnected in the system.
Claim 5
Dependent Claim
51 words
The combination according to claim 3, characterized in that the two partial streams are cooled in the re-cooler means separately from one another and in that only the re-cooler means which is traversed by the partial stream for cooling the engine is bypassed by saId bypass line with a cold engine.
Claim 6
Dependent Claim
58 words
The combination according to claim 4, including a compressor the rotational speed and outlet temperature of which varies with engine load, characterized in that the quantity of the branching-off partial stream for cooling the supercharged air is variable by a control means, said control means being controlled in dependence on the compressor outlet temperature of the supercharged air.
Claim 7
Dependent Claim
28 words
The combination according to claim 5, characterized in that said control means is controlled also as a function of the control rack position of an injection pump means.
Claim 8
Dependent Claim
26 words
The combination according to claim 6, characterized in that water is used as heat-absorbing medium for the cooling of the partial streams in the re-cooler means.
Claim 9
Dependent Claim
26 words
The combination according to claim 6, characterized in that air is used as heat-absorbing medium for the cooling of the partial streams in the re-cooler means.
Claim 10
Dependent Claim
48 words
The combination according to claim 3, characterized in that only the partial stream for cooling the supercharged air is cooled in the re-cooler means, the cooling of the partial stream for cooling the engine taking place by mixing with the colder partial stream for cooling the supercharged air.
Claim 11
Dependent Claim
53 words
The combination according to claim 9, characterized by means for so matching the quantity relationship of the two parrial streams that the outlet temperature of the cooling water at the cooling water pump discharge results exclusively by reason of the mixing action, and means for bypassing the re-cooler means with a cold engine.
Claim 12
Dependent Claim
26 words
The combination according to claim 10, characterized in that water is used as heat-absorbing medium for the cooling of the partial streams in the re-cooler means.
Claim 13
Dependent Claim
24 words
The combination according to claim 10, characterized in that air is used as heat-absorbing medium for cooling the partial streams in the re-cooler means.
Claim 14
Dependent Claim
45 words
The combination according to claim 1, characterized in that the two partial streams are cooled separately from one another in the re-cooler means, and in that only the re-cooler means traversed by the partial stream for cooling the engine is by-passed with a cold engine.
Claim 15
Dependent Claim
53 words
The combination according to claim 1, including a compressor the rotational speed and outlet temperature of which varies with engine load, characterized by control means for controlling the quantity of the branching-off partial stream for cooling the supercharged air which is controlled in dependence on the compressor outlet temperature of the supercharged air.
Claim 16
Dependent Claim
37 words
The combination according to claim 1, characterized by control means for controlling the quantity of the branching-off partial stream for cooling the supercharged air in dependence on the position of the control rack of an injection pump.
Claim 17
Dependent Claim
49 words
The combination according to claim 1, characterized in that only the partial stream for cooling the supercharged air is being cooled in the re-cooler means, the cooling of the partial stream for the engine cooling taking place by mixing with the colder partial stream for the supercharged air cooling.
Claim 18
Dependent Claim
63 words
The combination according to claim 16, characterized by means for so matching the quantity relationship of the two partial streams that the outlet temperature of the cooling water at the cooling water pump discharge, which is necessary for the engine cooling, results substantially exclusively on the basis of the mixing action, and in that the re-cooler means is bypassed with a cold engine.
Claim 19
Dependent Claim
24 words
The combination according to claim 1, characterized in that water is used as heat-absorbing medium for cooling the partial streams in the re-cooler means.
Claim 20
Dependent Claim
24 words
The combination according to claim 1, characterized in that air is used as heat-absorbing medium for cooling the partial streams in the re-cooler means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |