DE2131271B2 - Einrichtung zum Überwachen des Füllstandes einer elektrisch leitenden Kühlflüssigkeit in einer Maschine, insbesondere Brennkraftmaschine eines Kraftfahrzeugs - Google Patents
Einrichtung zum Überwachen des Füllstandes einer elektrisch leitenden Kühlflüssigkeit in einer Maschine, insbesondere Brennkraftmaschine eines KraftfahrzeugsInfo
- Publication number
- DE2131271B2 DE2131271B2 DE2131271A DE2131271A DE2131271B2 DE 2131271 B2 DE2131271 B2 DE 2131271B2 DE 2131271 A DE2131271 A DE 2131271A DE 2131271 A DE2131271 A DE 2131271A DE 2131271 B2 DE2131271 B2 DE 2131271B2
- Authority
- DE
- Germany
- Prior art keywords
- coolant
- electrode
- transistor
- resistor
- emitter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 239000002826 coolant Substances 0.000 title claims description 31
- 238000002485 combustion reaction Methods 0.000 title claims description 10
- 238000012544 monitoring process Methods 0.000 title claims description 4
- 239000002184 metal Substances 0.000 claims description 16
- 239000003990 capacitor Substances 0.000 claims description 13
- 238000001816 cooling Methods 0.000 claims description 12
- 239000000110 cooling liquid Substances 0.000 claims description 9
- 230000006378 damage Effects 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 108010053481 Antifreeze Proteins Proteins 0.000 claims 2
- 239000000654 additive Substances 0.000 claims 2
- 230000002528 anti-freeze Effects 0.000 claims 2
- 238000013021 overheating Methods 0.000 claims 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- 230000001771 impaired effect Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012806 monitoring device Methods 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 241001137251 Corvidae Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000015108 pies Nutrition 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/14—Indicating devices; Other safety devices
- F01P11/18—Indicating devices; Other safety devices concerning coolant pressure, coolant flow, or liquid-coolant level
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
- G01F23/265—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors for discrete levels
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US4969170A | 1970-06-25 | 1970-06-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE2131271A1 DE2131271A1 (de) | 1972-01-05 |
| DE2131271B2 true DE2131271B2 (de) | 1980-06-26 |
Family
ID=21961163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE2131271A Withdrawn DE2131271B2 (de) | 1970-06-25 | 1971-06-24 | Einrichtung zum Überwachen des Füllstandes einer elektrisch leitenden Kühlflüssigkeit in einer Maschine, insbesondere Brennkraftmaschine eines Kraftfahrzeugs |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US3614730A (OSRAM) |
| CA (1) | CA959146A (OSRAM) |
| DE (1) | DE2131271B2 (OSRAM) |
| FR (1) | FR2097913A5 (OSRAM) |
| GB (1) | GB1287385A (OSRAM) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2235642A1 (de) * | 1972-07-20 | 1974-01-31 | Bosch Gmbh Robert | Einrichtung zur kontrolle von elektrischen verbrauchern in kraftfahrzeugen |
| US3978463A (en) * | 1975-08-04 | 1976-08-31 | General Motors Corporation | Oscillator energized liquid level indicator |
| DE29710239U1 (de) * | 1997-06-12 | 1997-08-21 | Schmoll, Heinz, 61476 Kronberg | Kühlwassersensor |
| DE19842167A1 (de) * | 1998-09-15 | 2000-03-16 | Wilo Gmbh | Füllstandserkennung im Kühlwasserkreislauf eines Verbrennungsmotors |
| US20050034510A1 (en) * | 2003-08-12 | 2005-02-17 | Han Charlie Bun | Coolant service monitoring system |
| US7475665B2 (en) * | 2006-01-17 | 2009-01-13 | Wacker Neuson Corporation | Capacitance-based fluid level sensor |
| US20130103284A1 (en) * | 2010-06-27 | 2013-04-25 | El-Sol Technologies Ltd. | System for monitoring the coolant level and the temperature of an internal combustion engine |
| GB2550384B (en) | 2016-05-18 | 2019-02-27 | Ford Global Tech Llc | An engine coolant temperature sensor |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2477511A (en) * | 1948-06-04 | 1949-07-26 | David M Comb | Liquid level control |
| US3257643A (en) * | 1963-09-30 | 1966-06-21 | Fred N Jensen | Safety signaling system for marine engine cooling systems |
| US3401373A (en) * | 1965-10-24 | 1968-09-10 | Ray D. Risner | Vehicle warning and alarm system |
| US3534352A (en) * | 1967-06-23 | 1970-10-13 | Stewart Warner Corp | Coolant sensing apparatus |
-
1970
- 1970-06-25 US US49691A patent/US3614730A/en not_active Expired - Lifetime
-
1971
- 1971-03-12 CA CA107,546A patent/CA959146A/en not_active Expired
- 1971-05-10 GB GB04105/71A patent/GB1287385A/en not_active Expired
- 1971-06-16 FR FR7121807A patent/FR2097913A5/fr not_active Expired
- 1971-06-24 DE DE2131271A patent/DE2131271B2/de not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| FR2097913A5 (OSRAM) | 1972-03-03 |
| GB1287385A (en) | 1972-08-31 |
| CA959146A (en) | 1974-12-10 |
| DE2131271A1 (de) | 1972-01-05 |
| US3614730A (en) | 1971-10-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OD | Request for examination | ||
| 8230 | Patent withdrawn |