FR2396960A1 - Electronic oil gauge for motor vehicle - uses capacitive probe as dip stick and moving coil meter displaying signal from circuit mounted in housing at probe top - Google Patents

Electronic oil gauge for motor vehicle - uses capacitive probe as dip stick and moving coil meter displaying signal from circuit mounted in housing at probe top

Info

Publication number
FR2396960A1
FR2396960A1 FR7816216A FR7816216A FR2396960A1 FR 2396960 A1 FR2396960 A1 FR 2396960A1 FR 7816216 A FR7816216 A FR 7816216A FR 7816216 A FR7816216 A FR 7816216A FR 2396960 A1 FR2396960 A1 FR 2396960A1
Authority
FR
France
Prior art keywords
probe
dip stick
housing
motor vehicle
moving coil
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Withdrawn
Application number
FR7816216A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Borletti SpA
Original Assignee
Borletti SpA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Borletti SpA filed Critical Borletti SpA
Publication of FR2396960A1 publication Critical patent/FR2396960A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The oil level gauge comprises a capacitive sensor (22) in the form of an insulated metal element (27) within a tube (25) fitted with O-rings (24) which replaces the conventional dip stick. Max. and Min. graduations are engraved on the lower part of the outer tube. The outer tube and the inner element form the plates of a capacitor. The upper part of the gauge supports a metal chamber fitted with external cooling fins (33). The chamber contains a printed circuit board on which are mounted the electronic components of the signal processing circuitry. The electrical leads pass out of the housing via a sealed cable gland. The output signal is a function of the capacitance of the probe, and thus of the oil level.
FR7816216A 1977-07-04 1978-05-31 Electronic oil gauge for motor vehicle - uses capacitive probe as dip stick and moving coil meter displaying signal from circuit mounted in housing at probe top Withdrawn FR2396960A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT6854577A IT1083566B (en) 1977-07-04 1977-07-04 LEVEL INDICATOR OR ENGINE OIL IN CAPACITIVE VEHICLES

Publications (1)

Publication Number Publication Date
FR2396960A1 true FR2396960A1 (en) 1979-02-02

Family

ID=11309795

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7816216A Withdrawn FR2396960A1 (en) 1977-07-04 1978-05-31 Electronic oil gauge for motor vehicle - uses capacitive probe as dip stick and moving coil meter displaying signal from circuit mounted in housing at probe top

Country Status (4)

Country Link
DE (1) DE2823752A1 (en)
ES (1) ES470346A1 (en)
FR (1) FR2396960A1 (en)
IT (1) IT1083566B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526411A1 (en) * 1982-05-04 1983-11-10 Seitz Enzinger Noll Masch FILLING DEVICE EQUIPPED WITH MACHINES FOR FILLING CONTAINERS WITH LIQUIDS CONTAINING OR NOT CONTAINING CARBON GAS
FR2647900A1 (en) * 1989-05-31 1990-12-07 Jaeger Improvements to systems for measuring the level and/or volume of a liquid with a capacitive probe
EP1071579A1 (en) * 1998-04-16 2001-01-31 Kavlico Corporation Capacitive sensor assembly with soot build-up inhibiting coating
EP1429124A1 (en) * 2002-12-13 2004-06-16 Beru AG Method and circuit for capacitive detection and/or determination of the composition of a medium

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2526411A1 (en) * 1982-05-04 1983-11-10 Seitz Enzinger Noll Masch FILLING DEVICE EQUIPPED WITH MACHINES FOR FILLING CONTAINERS WITH LIQUIDS CONTAINING OR NOT CONTAINING CARBON GAS
FR2647900A1 (en) * 1989-05-31 1990-12-07 Jaeger Improvements to systems for measuring the level and/or volume of a liquid with a capacitive probe
EP1071579A1 (en) * 1998-04-16 2001-01-31 Kavlico Corporation Capacitive sensor assembly with soot build-up inhibiting coating
EP1071579A4 (en) * 1998-04-16 2001-08-01 Kavlico Corp Capacitive sensor assembly with soot build-up inhibiting coating
EP1429124A1 (en) * 2002-12-13 2004-06-16 Beru AG Method and circuit for capacitive detection and/or determination of the composition of a medium

Also Published As

Publication number Publication date
DE2823752A1 (en) 1979-01-11
IT1083566B (en) 1985-05-21
ES470346A1 (en) 1979-02-16

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Legal Events

Date Code Title Description
ST Notification of lapse