GB1429625A - Digital engine control emthod - Google Patents

Digital engine control emthod

Info

Publication number
GB1429625A
GB1429625A GB4128975A GB4128975A GB1429625A GB 1429625 A GB1429625 A GB 1429625A GB 4128975 A GB4128975 A GB 4128975A GB 4128975 A GB4128975 A GB 4128975A GB 1429625 A GB1429625 A GB 1429625A
Authority
GB
United Kingdom
Prior art keywords
digital number
producing
response
engine speed
logic signal
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
GB4128975A
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.)
Essex International Inc
Original Assignee
Essex International Inc
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 Essex International Inc filed Critical Essex International Inc
Publication of GB1429625A publication Critical patent/GB1429625A/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02PIGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00Advancing or retarding ignition; Control therefor
    • F02P5/04Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145Advancing 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
    • F02P5/15Digital data processing
    • F02P5/1502Digital data processing using one central computing unit
    • F02P5/1512Digital data processing using one central computing unit with particular means concerning an individual cylinder
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/2406Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
    • F02D41/2409Addressing techniques specially adapted therefor
    • F02D41/2416Interpolation techniques
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D41/00Electrical control of supply of combustible mixture or its constituents
    • F02D41/24Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
    • F02D41/26Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/40Engine management systems

Abstract

1429625 Automatic control of speed ESSEX INTERNATIONAL Inc 16 May 1973 [29 Dec 1972] 41289/75 Divided out of 1375218 Heading G3R The description of this Specification is identical to that of the parent Specification 1375218 the claims relating to maintaining an engine operating characteristic at a predetermined value by adjusting the fuel supply. As described, the engine speed is maintained at a constant desired speed by storing a desired digital number representing the desired engine speed, converting the engine speed at a first point in time into a first digital number, converting the engine speed at a second, later point in time into a second digital number, producing a first logic signal L2 if the second digital number is greater than the desired digital number, producing a second logic signal L 1 if the second digital number is less than the desired digital number, producing a third logic signal L3 or L5 if the second digital number is greater than the first digital number, producing a fourth logic signal L4 or L6 if the second digital number is less than the first digital number, storing a delta digital number representing a small change in the quantity of fuel normally supplied to the engine, changing the amount of fuel supplied in an amount proportional to the delta digital number in response to the first L2 and fourth L6 logic signals, or in response to the second L1 and third L3 logic signals, and changing the amount of fuel supplied in an amount proportional to the inverse of the value of the delta digital number in response to the first L2 and third L5 logic signals or in response to the second L1 and fourth L4 logic signals.
GB4128975A 1972-12-29 1973-05-16 Digital engine control emthod Expired GB1429625A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00319345A US3835819A (en) 1972-12-29 1972-12-29 Digital engine control apparatus and method

Publications (1)

Publication Number Publication Date
GB1429625A true GB1429625A (en) 1976-03-24

Family

ID=23241858

Family Applications (3)

Application Number Title Priority Date Filing Date
GB1526275A Expired GB1429624A (en) 1972-12-29 1973-05-16 Digital engine control apparatus and method
GB4128975A Expired GB1429625A (en) 1972-12-29 1973-05-16 Digital engine control emthod
GB2335173A Expired GB1429961A (en) 1972-12-29 1973-05-16 Digital engine control apparatus and method

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB1526275A Expired GB1429624A (en) 1972-12-29 1973-05-16 Digital engine control apparatus and method

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2335173A Expired GB1429961A (en) 1972-12-29 1973-05-16 Digital engine control apparatus and method

Country Status (7)

Country Link
US (1) US3835819A (en)
JP (1) JPS4996132A (en)
CA (1) CA1006941A (en)
DE (1) DE2349670A1 (en)
FR (1) FR2212494B1 (en)
GB (3) GB1429624A (en)
IT (1) IT990093B (en)

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GB2136164A (en) * 1983-03-01 1984-09-12 Aisin Seiki Automobile speed control systems

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US4298939A (en) * 1978-10-30 1981-11-03 Phillips Petroleum Company Method and apparatus for applying a regulated voltage
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2136164A (en) * 1983-03-01 1984-09-12 Aisin Seiki Automobile speed control systems

Also Published As

Publication number Publication date
FR2212494A1 (en) 1974-07-26
DE2349670A1 (en) 1974-07-04
US3835819A (en) 1974-09-17
FR2212494B1 (en) 1978-11-10
GB1429624A (en) 1976-03-24
GB1429961A (en) 1976-03-31
IT990093B (en) 1975-06-20
CA1006941A (en) 1977-03-15
JPS4996132A (en) 1974-09-11

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Legal Events

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

Effective date: 19930515