DE3015004A1 - Fuel-air mixture control for carburettor of IC engine - calculates engine speed from measured crankshaft speed and compares it with required speed - Google Patents

Fuel-air mixture control for carburettor of IC engine - calculates engine speed from measured crankshaft speed and compares it with required speed

Info

Publication number
DE3015004A1
DE3015004A1 DE19803015004 DE3015004A DE3015004A1 DE 3015004 A1 DE3015004 A1 DE 3015004A1 DE 19803015004 DE19803015004 DE 19803015004 DE 3015004 A DE3015004 A DE 3015004A DE 3015004 A1 DE3015004 A1 DE 3015004A1
Authority
DE
Germany
Prior art keywords
speed
engine
carburettor
fuel
compares
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Withdrawn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
DE19803015004
Other languages
German (de)
Inventor
Junzo Uozumi
Shigetaka Takada
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.)
Aisan Industry Co Ltd
Original Assignee
Aisan Industry 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
Priority to JP4925779A priority Critical patent/JPS55139955A/en
Priority to JP4925679A priority patent/JPS55139954A/en
Application filed by Aisan Industry Co Ltd filed Critical Aisan Industry Co Ltd
Publication of DE3015004A1 publication Critical patent/DE3015004A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02DCONTROLLING COMBUSTION ENGINES
    • F02D35/00Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • 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
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/04Introducing corrections for particular operating conditions
    • F02D41/06Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • F02D41/067Introducing corrections for particular operating conditions for engine starting or warming up for starting with control of the choke
    • 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
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1438Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1486Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor with correction for particular operating conditions
    • F02D41/1488Inhibiting the regulation
    • F02D41/1489Replacing of the control value by a constant
    • 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
    • F02D41/02Circuit arrangements for generating control signals
    • F02D41/14Introducing closed-loop corrections
    • F02D41/1497With detection of the mechanical response of the engine
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M23/00Apparatus for adding secondary air to fuel-air mixture
    • F02M23/04Apparatus for adding secondary air to fuel-air mixture with automatic control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M3/00Idling devices for carburettors
    • F02M3/08Other details of idling devices
    • F02M3/09Valves responsive to engine conditions, e.g. manifold vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/23Fuel aerating devices
    • F02M7/24Controlling flow of aerating air
    • Y02T10/146

Abstract

The mixture control measures the fluctuations in speed of the engine crankshaft and calculates the variation in engine speed. The calculated engine speed is compared with a reference command signal. The fuel/air mixture in the carburettor is altered until the engine speed is equal to the selected reference. The mixture is altered by controlling the amount of air admitted or by controlling a secondary jet, the main jet providing the greater part of the mix. Alternatively the mixture is altered by controlling a bypass connection between the air inlet of the carburettor and a point directly downstream of a large nozzle in the carburettor.
DE19803015004 1979-04-20 1980-04-18 Fuel-air mixture control for carburettor of IC engine - calculates engine speed from measured crankshaft speed and compares it with required speed Withdrawn DE3015004A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP4925779A JPS55139955A (en) 1979-04-20 1979-04-20 Mixed air controller for carburetor
JP4925679A JPS55139954A (en) 1979-04-20 1979-04-20 Mixed air controller for carburetor

Publications (1)

Publication Number Publication Date
DE3015004A1 true DE3015004A1 (en) 1981-01-08

Family

ID=26389632

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19803015004 Withdrawn DE3015004A1 (en) 1979-04-20 1980-04-18 Fuel-air mixture control for carburettor of IC engine - calculates engine speed from measured crankshaft speed and compares it with required speed

Country Status (1)

Country Link
DE (1) DE3015004A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129776A1 (en) * 1983-06-27 1985-01-02 Siemens Aktiengesellschaft Control device for an internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0129776A1 (en) * 1983-06-27 1985-01-02 Siemens Aktiengesellschaft Control device for an internal combustion engine

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Legal Events

Date Code Title Description
OAM Search report available
OC Search report available
8110 Request for examination paragraph 44
8130 Withdrawal