FR2445511A1 - Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator - Google Patents

Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator

Info

Publication number
FR2445511A1
FR2445511A1 FR7836675A FR7836675A FR2445511A1 FR 2445511 A1 FR2445511 A1 FR 2445511A1 FR 7836675 A FR7836675 A FR 7836675A FR 7836675 A FR7836675 A FR 7836675A FR 2445511 A1 FR2445511 A1 FR 2445511A1
Authority
FR
France
Prior art keywords
oscillator
free
position sensor
piston position
engine
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.)
Granted
Application number
FR7836675A
Other languages
French (fr)
Other versions
FR2445511B1 (en
Inventor
Christian Menard
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7836675A priority Critical patent/FR2445511A1/en
Publication of FR2445511A1 publication Critical patent/FR2445511A1/en
Application granted granted Critical
Publication of FR2445511B1 publication Critical patent/FR2445511B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P7/00—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices
    • F02P7/06—Arrangements of distributors, circuit-makers or -breakers, e.g. of distributor and circuit-breaker combinations or pick-up devices of circuit-makers or -breakers, or pick-up devices adapted to sense particular points of the timing cycle
    • F02P7/067—Electromagnetic pick-up devices, e.g. providing induced current in a coil
    • F02P7/0675—Electromagnetic pick-up devices, e.g. providing induced current in a coil with variable reluctance, e.g. depending on the shape of a tooth

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)

Abstract

The piston position sensor comprises a free-running oscillator and rotating metal strips (19) representing the pistons. The strips are carried by a short insulating annulus mounted on a continuation of the normal contact-braker shaft (11). The annulus having a greater dia. than the shaft provides higher accuracy than sensors directly mounted on the shaft. The oscillator coil (1) is fixed and closely faces the annulus such that their proximity damps the oscillator. The oscillator output is demodulated or detected, a comparator providing a two level only output as a function of proximity. The oscillator coil is wound on a ferrite core carried by an extension (21) of the cover (14) of the overall casing (10) itself bolted to the engine block.
FR7836675A 1978-12-28 1978-12-28 Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator Granted FR2445511A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7836675A FR2445511A1 (en) 1978-12-28 1978-12-28 Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7836675A FR2445511A1 (en) 1978-12-28 1978-12-28 Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator

Publications (2)

Publication Number Publication Date
FR2445511A1 true FR2445511A1 (en) 1980-07-25
FR2445511B1 FR2445511B1 (en) 1981-10-30

Family

ID=9216662

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7836675A Granted FR2445511A1 (en) 1978-12-28 1978-12-28 Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator

Country Status (1)

Country Link
FR (1) FR2445511A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058562A2 (en) * 1981-02-17 1982-08-25 Honda Giken Kogyo Kabushiki Kaisha Fuel injection timing signal and crank angle signal generating apparatus
WO1983004283A1 (en) * 1982-06-03 1983-12-08 Robert Bosch Gmbh Sensor
EP0230560A2 (en) * 1986-01-25 1987-08-05 Audi Ag Angle sensor arrangement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109083960A (en) * 2018-09-29 2018-12-25 南京高华科技股份有限公司 A kind of damping tooling of sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277340A (en) * 1962-12-05 1966-10-04 Lucas Industries Ltd Transistorized ignition system for internal combustion engines
FR2257796A1 (en) * 1974-01-15 1975-08-08 Ducellier & Cie

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3277340A (en) * 1962-12-05 1966-10-04 Lucas Industries Ltd Transistorized ignition system for internal combustion engines
FR2257796A1 (en) * 1974-01-15 1975-08-08 Ducellier & Cie

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0058562A2 (en) * 1981-02-17 1982-08-25 Honda Giken Kogyo Kabushiki Kaisha Fuel injection timing signal and crank angle signal generating apparatus
EP0058562A3 (en) * 1981-02-17 1983-10-12 Honda Giken Kogyo Kabushiki Kaisha Fuel injection timing signal and crank angle signal generating apparatus
WO1983004283A1 (en) * 1982-06-03 1983-12-08 Robert Bosch Gmbh Sensor
FR2528119A1 (en) * 1982-06-03 1983-12-09 Bosch Gmbh Robert SENSOR DEVICE FOR DETERMINING OPERATING FACTORS, ESPECIALLY IN IGNITION PLANTS OF INTERNAL COMBUSTION ENGINES
US4700305A (en) * 1982-06-03 1987-10-13 Robert Bosch Gmbh Position displacement and speed sensor system, particularly for combination with an automotive engine control computer
EP0230560A2 (en) * 1986-01-25 1987-08-05 Audi Ag Angle sensor arrangement
EP0230560A3 (en) * 1986-01-25 1987-11-11 Audi Ag Angle sensor arrangement

Also Published As

Publication number Publication date
FR2445511B1 (en) 1981-10-30

Similar Documents

Publication Publication Date Title
ES8202951A1 (en) Method and apparatus for measuring the relative power contribution of an internal combustion engine.
JPS55134359A (en) Detector of rotation speed of turbocharger
SE7713852L (en) DEVICE FOR META TORQUE AND SPEED OF A ROTARY AXLE
DE68913864D1 (en) Electronic starter of an engine.
GB1462844A (en) Anti-skid system having sensor
ES461451A1 (en) Method and device for detecting the wear of the bearings of a rotary shaft
GB1462021A (en) Tubular wheel speed sensor
FR2445511A1 (en) Piston position sensor for IC engine - uses leakage inductance damping in free-running oscillator within rotor and with output fed to level comparator
FR2427727B1 (en)
IT7926934A0 (en) TURBINE CASING OF A COMPACT TURBOCHARGER.
JPS5315610A (en) Screw fluid machine
JPS54156656A (en) Rotating position detector
JPS539913A (en) Low noise engine
JPS56160613A (en) Detector for rotational position of intermittently rotating body
FR2417750B1 (en) DEVICE FOR PERFORMING THE ELECTROMECHANICAL MEASUREMENT OF AN AXIAL SET, ESPECIALLY FOR A TURBOMACHINE SHAFT
JPS5338311A (en) Reading system
SU672567A1 (en) Method of measuring inductive transducer rotor r.p.m.
FR2453393A1 (en) Inductive position sensor evaluation circuit - has stabilised oscillator containing fixed and variable inductance coils with voltage regulator
JPS55147326A (en) Engine performance indicator
SU1167685A1 (en) Versions of induction tachometer generator
JPS52145708A (en) Rotor of alternator
FR2369550A1 (en) Electromagnetically operating weighing device - has inductive transducer with movable element passing between coils driven by HF generator
GB1357045A (en) Balancing machines
JPS57103012A (en) Displacement detector
ES487218A1 (en) Magnetic signals generator.

Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse