GB2119021A - Carburettor control in turbo charged engines - Google Patents

Carburettor control in turbo charged engines Download PDF

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Publication number
GB2119021A
GB2119021A GB08211595A GB8211595A GB2119021A GB 2119021 A GB2119021 A GB 2119021A GB 08211595 A GB08211595 A GB 08211595A GB 8211595 A GB8211595 A GB 8211595A GB 2119021 A GB2119021 A GB 2119021A
Authority
GB
United Kingdom
Prior art keywords
turbo
inlet
engine
pressure
carburettor
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Withdrawn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
GB08211595A
Inventor
Stephen Read
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08211595A priority Critical patent/GB2119021A/en
Publication of GB2119021A publication Critical patent/GB2119021A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
    • F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
    • F02M7/14—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle
    • F02M7/16—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis
    • F02M7/17—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves with means for controlling cross-sectional area of fuel spray nozzle operated automatically, e.g. dependent on exhaust-gas analysis by a pneumatically adjustable piston-like element, e.g. constant depression carburettors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D23/00—Controlling engines characterised by their being supercharged
    • 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
    • Y02T10/12—Improving ICE efficiencies

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supercharger (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The pressure downstream of the turbocharger compressor I is transmitted to the carburettor piston through a manually controlled on-off valve O and a tuning valve T. The lift of the piston is reduced as the compressor discharge pressure rises. <IMAGE>

Description

SPECIFICATION The turbomiser Observations on the turbo-charged internal com bustion engine and further refinement.
Observations.
1. Since fitting ofthe turbo-chargerthe engine is smootherthroughoutthe rev. range. This smooth ness is quite marked at throttle settingslengine speeds well belowthose required to produce a positive boost pressure.
2. Fuel consumption with turbo, over 520+ miles (urbanlmotorwayratio2:1)was little changed.
Assumption.
The engine is working at maximum efficiency when the inlet manifold pressure equals atmospheric pressure.
Conclusion.
At low revs./th rottle settings the turbo-charger is increasing the efficiency of the engine by raising the inlet pressure towards atmospheric.
Further observation.
It is possible, though demanding of attention, to acceleratetofairlyhigh speeds maintaining the inlet pressure at atmospheric pressure. If the above assumption is correct, then higherthrottle settings during acceleration are inefficient.
Modification to assist efficient performance: the TURBOMISER.
Principle. Positive inlet-manifold pressure is used to reduce excessive carburettor piston travel. Values for tuning and manual override are essential.
Comments.
1. Manual override to allow normal use of turbo:+ electronic control.
2. Tuning valveno requirementfornon-return (to preventtheoretical acceleration at low inlet pressures) since with closed throttle the carburettor piston will not be raised by such small volume.
Likewise, theoretical enrichment of mixture is negligible.
CLAIM (filed on 14th Feb 83).
I claim as an Inventive Step: 1. The provision ofafeedbackloop between positively-charged inlet-manifold and carburettor cylinder, in an internal combustion engine having a carburettorfrom which an air-fuel mixture is supplied to at least one cylinder using a turbo/super-charger.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    SPECIFICATION The turbomiser Observations on the turbo-charged internal com bustion engine and further refinement.
    Observations.
    1. Since fitting ofthe turbo-chargerthe engine is smootherthroughoutthe rev. range. This smooth ness is quite marked at throttle settingslengine speeds well belowthose required to produce a positive boost pressure.
    2. Fuel consumption with turbo, over 520+ miles (urbanlmotorwayratio2:1)was little changed.
    Assumption.
    The engine is working at maximum efficiency when the inlet manifold pressure equals atmospheric pressure.
    Conclusion.
    At low revs./th rottle settings the turbo-charger is increasing the efficiency of the engine by raising the inlet pressure towards atmospheric.
    Further observation.
    It is possible, though demanding of attention, to acceleratetofairlyhigh speeds maintaining the inlet pressure at atmospheric pressure. If the above assumption is correct, then higherthrottle settings during acceleration are inefficient.
    Modification to assist efficient performance: the TURBOMISER.
    Principle. Positive inlet-manifold pressure is used to reduce excessive carburettor piston travel. Values for tuning and manual override are essential.
    Comments.
    1. Manual override to allow normal use of turbo:+ electronic control.
    2. Tuning valveno requirementfornon-return (to preventtheoretical acceleration at low inlet pressures) since with closed throttle the carburettor piston will not be raised by such small volume.
    Likewise, theoretical enrichment of mixture is negligible.
    CLAIM (filed on 14th Feb 83).
    I claim as an Inventive Step:
    1. The provision ofafeedbackloop between positively-charged inlet-manifold and carburettor cylinder, in an internal combustion engine having a carburettorfrom which an air-fuel mixture is supplied to at least one cylinder using a turbo/super-charger.
GB08211595A 1982-04-22 1982-04-22 Carburettor control in turbo charged engines Withdrawn GB2119021A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08211595A GB2119021A (en) 1982-04-22 1982-04-22 Carburettor control in turbo charged engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08211595A GB2119021A (en) 1982-04-22 1982-04-22 Carburettor control in turbo charged engines

Publications (1)

Publication Number Publication Date
GB2119021A true GB2119021A (en) 1983-11-09

Family

ID=10529851

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08211595A Withdrawn GB2119021A (en) 1982-04-22 1982-04-22 Carburettor control in turbo charged engines

Country Status (1)

Country Link
GB (1) GB2119021A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354596A2 (en) * 1986-09-10 1990-02-14 Günter Schüssler Device concerning a whirlpool bathtub

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510753A (en) * 1938-06-14 1939-08-08 Su Carburetter Co Ltd Improvements relating to carburettors for internal combustion engines
GB718381A (en) * 1951-10-18 1954-11-10 Allan Stanley Wiltshire Improvements in or relating to carburettors
US4142494A (en) * 1977-10-03 1979-03-06 General Motors Corporation Turbocharged engine with vacuum bleed valve
US4241711A (en) * 1978-12-05 1980-12-30 Schmelzer Corporation Fuel control system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB510753A (en) * 1938-06-14 1939-08-08 Su Carburetter Co Ltd Improvements relating to carburettors for internal combustion engines
GB718381A (en) * 1951-10-18 1954-11-10 Allan Stanley Wiltshire Improvements in or relating to carburettors
US4142494A (en) * 1977-10-03 1979-03-06 General Motors Corporation Turbocharged engine with vacuum bleed valve
US4241711A (en) * 1978-12-05 1980-12-30 Schmelzer Corporation Fuel control system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0354596A2 (en) * 1986-09-10 1990-02-14 Günter Schüssler Device concerning a whirlpool bathtub
EP0354596A3 (en) * 1986-09-10 1990-09-26 Gunter Schussler Device concerning a whirlpool bathtub

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)