GB1370105A - Process control apparatus - Google Patents

Process control apparatus

Info

Publication number
GB1370105A
GB1370105A GB4802671A GB4802671A GB1370105A GB 1370105 A GB1370105 A GB 1370105A GB 4802671 A GB4802671 A GB 4802671A GB 4802671 A GB4802671 A GB 4802671A GB 1370105 A GB1370105 A GB 1370105A
Authority
GB
United Kingdom
Prior art keywords
capacitor
parameter
variable
potential
value
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.)
Expired
Application number
GB4802671A
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.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
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 Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to GB4802671A priority Critical patent/GB1370105A/en
Priority to CA132,770A priority patent/CA969274A/en
Priority to AU38232/72A priority patent/AU459772B2/en
Priority to SE00895/72A priority patent/SE368996B/xx
Priority to FR7203090A priority patent/FR2157289A5/fr
Priority to IT4806272A priority patent/IT948386B/en
Priority to JP7212916A priority patent/JPS5336106B2/ja
Priority to DE19722206022 priority patent/DE2206022C3/en
Publication of GB1370105A publication Critical patent/GB1370105A/en
Expired 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
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • 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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • F02P3/04—Layout of circuits
    • F02P3/045—Layout of circuits for control of the dwell or anti dwell time
    • F02P3/0453—Opening or closing the primary coil circuit with semiconductor devices
    • F02P3/0456—Opening or closing the primary coil circuit with semiconductor devices using digital techniques
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/26—Automatic controllers electric in which the output signal is a pulse-train
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Feedback Control In General (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Control Of Eletrric Generators (AREA)
  • Electrotherapy Devices (AREA)

Abstract

1370105 Pulse oscillator circuits LUCAS ELECTRICAL CO Ltd 14 Jan 1972 [15 Oct 1971] 48026/71 Heading H3T [Also in Division C4] The process control system disclosed in Specification 1,370,104 is provided with an oscillator (48) Fig. 1 (not shown) the frequency of which is variable upon the values of 3 further parameters involved in the process. As shown a capacitor 90 may be charged from a battery 83 via the collector-emitter path of a transistor 91. When the potential thereacross exceeds a certain value, a thyristor 88 turns on and discharges the capacitor, the potential at the output point 89 thereby going from nearly that of the line 82 to that of line 81 sequentially to provide the pulsed output. The collector current of the transistor 91 and therefore the rate of charging of the capacitor is variable owing to the presence of a first, thermistor 93 the temperature of which is dependent on the value of a first parameter, and similarly the base current is variable according to a thermistor 94 which monitors a second parameter. The gate potential of the thyristor is dependent upon the slide setting of potentiometer 85, 87 which is moved according to the value of a third parameter.
GB4802671A 1971-10-15 1971-10-15 Process control apparatus Expired GB1370105A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB4802671A GB1370105A (en) 1971-10-15 1971-10-15 Process control apparatus
CA132,770A CA969274A (en) 1971-10-15 1972-01-19 Process control apparatus
AU38232/72A AU459772B2 (en) 1971-10-15 1972-01-24 Process control apparatus
SE00895/72A SE368996B (en) 1971-10-15 1972-01-26
FR7203090A FR2157289A5 (en) 1971-10-15 1972-01-31
IT4806272A IT948386B (en) 1971-10-15 1972-02-01 PROCESS CONTROL EQUIPMENT
JP7212916A JPS5336106B2 (en) 1971-10-15 1972-02-07
DE19722206022 DE2206022C3 (en) 1971-10-15 1972-02-09 Process control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4802671A GB1370105A (en) 1971-10-15 1971-10-15 Process control apparatus

Publications (1)

Publication Number Publication Date
GB1370105A true GB1370105A (en) 1974-10-09

Family

ID=10447102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4802671A Expired GB1370105A (en) 1971-10-15 1971-10-15 Process control apparatus

Country Status (7)

Country Link
JP (1) JPS5336106B2 (en)
AU (1) AU459772B2 (en)
CA (1) CA969274A (en)
FR (1) FR2157289A5 (en)
GB (1) GB1370105A (en)
IT (1) IT948386B (en)
SE (1) SE368996B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638498A (en) * 1980-06-20 1987-01-20 Rca Corporation Digital timing system

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2239593B1 (en) * 1973-08-03 1977-09-09 Sopromi Soc Proc Modern Inject
US3969498A (en) * 1973-09-13 1976-07-13 University Of The Pacific Dressing and method for treating a wound
JPS5677549A (en) * 1979-10-26 1981-06-25 Japanese National Railways<Jnr> Fuel injection device for diesel engine
IT1137483B (en) * 1980-06-20 1986-09-10 Rca Corp DIGITAL TIMING SYSTEM
JPH0325868U (en) * 1989-07-24 1991-03-18

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1106652A (en) * 1964-03-16 1968-03-20 Serck R & D Ltd Process control apparatus
US3521611A (en) * 1969-01-27 1970-07-28 Stanley Russell Finch Ignition timing system for an internal combustion engine
US3689753A (en) * 1969-09-23 1972-09-05 Lucas Industries Ltd Engine control systems

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4638498A (en) * 1980-06-20 1987-01-20 Rca Corporation Digital timing system

Also Published As

Publication number Publication date
CA969274A (en) 1975-06-10
FR2157289A5 (en) 1973-06-01
SE368996B (en) 1974-07-29
DE2206022A1 (en) 1973-08-02
DE2206022B2 (en) 1976-11-18
AU3823272A (en) 1973-07-26
JPS4848879A (en) 1973-07-10
AU459772B2 (en) 1975-03-19
JPS5336106B2 (en) 1978-09-30
IT948386B (en) 1973-05-30

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years