GB2210929A - Adding air to i.c. engine mixture intake manifolds - Google Patents

Adding air to i.c. engine mixture intake manifolds Download PDF

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Publication number
GB2210929A
GB2210929A GB8822814A GB8822814A GB2210929A GB 2210929 A GB2210929 A GB 2210929A GB 8822814 A GB8822814 A GB 8822814A GB 8822814 A GB8822814 A GB 8822814A GB 2210929 A GB2210929 A GB 2210929A
Authority
GB
United Kingdom
Prior art keywords
air
manifold
carburettor
inlet
downstream
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Withdrawn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
GB8822814A
Other versions
GB8822814D0 (en
Inventor
Michael Playdon
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
Priority claimed from GB878723092A external-priority patent/GB8723092D0/en
Application filed by Individual filed Critical Individual
Priority to GB8822814A priority Critical patent/GB2210929A/en
Publication of GB8822814D0 publication Critical patent/GB8822814D0/en
Publication of GB2210929A publication Critical patent/GB2210929A/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Withdrawn legal-status Critical Current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
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/02—Apparatus for adding secondary air to fuel-air mixture with personal control, or with secondary-air valve controlled by main combustion-air throttle
    • F02M23/025—Optional operation by means of a hand or foot switch
    • 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
    • F02M23/00—Apparatus for adding secondary air to fuel-air mixture
    • F02M23/04—Apparatus for adding secondary air to fuel-air mixture with automatic control
    • F02M23/08—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus
    • F02M23/09—Apparatus for adding secondary air to fuel-air mixture with automatic control dependent on pressure in main combustion-air induction system, e.g. pneumatic-type apparatus using valves directly opened by low pressure
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of The Air-Fuel Ratio Of Carburetors (AREA)

Abstract

A tube 11 containing a compactible fibrous filter material 17 supplies air to the inlet manifold 12 downstream of the carburettor 13. The flow of air may be restricted by compacting the material 17 or controlled by a valve operated manually or dependence on mixture flow through the manifold. <IMAGE>

Description

METHOD AND DEVICE FOR INTERNAL COMBUSTION ENGINE This invention relates to a method for operating an internal combustion engine of the type having a carburettor and an inlet manifold and to a device therefor.
The invention comprises a method for operating an internal combustion engine having carburettor means supplying a fuel/air mixture into an inlet manifold comprising admitting air into said manifold downstream of said carburettor means.
Said air may be admitted through a restricted orifice and may be admitted just downstream of said carburettor means.
The air may be admitted at a rate dependent on flow rate of fuel/air mixture through the manifold.
The air may be admitted through a venturi section and may be filtered.
The invention also comprises an internal combustion engine performance modifying device comprising an air inlet attachment adapted for installation to an inlet manifold downstream of the carburettor means.
The device may comprise a threaded or threadable section for insertion into a drilled and tapped aperture in the manifold wall.
The device may comprise a venturi section inlet and also air filter means. The device may also comprise air admission adjustment means which may comprise a compactable filter plug e.g. of fibre material located in the inlet.
One embodiment of a device and a method according to the invention will now be described with reference to the accompanying drawings in which the single Figure is a cross section through a device shown in situ in an inlet manifold.
The Figure illustrates an internal combustion engine performance modifying device comprising an inlet attachment 11 adapted for installation to an inlet manifold 12 downstream of the carburettor means, partly shown at 13.
The device 11 has a threaded section 14 adapted to fit a drilled and tapped aperture 15 in the manifold 12 wall. Alternatively, the device can be made of soft material such as a plastics material which can be screwed into a hole tapped with any thread or can comprise a self rapping screw which taps into a simple based aperture 15.
The section 14, in any event, can be made so as to be cut or broken to a suitable length to fit different manifold designs, a convenient length being 2 inches or 5 cm.
The device comprises a venturi or bell section or flared inlet 16 filled with a compactable fibrous filter plug 17 which may be retained by a peened-over lip 18 of the inlet 16. The inlet aperture A is conveniently one inch or 2.5 cm.
The inlet may be controlled by valve means (not shown) which can be opened and closed manually or auto magically in accordance with e.g. a fuel consumption meter to optimise consumption.
In use, the device is fitted close to the carburettor 13 and the engine run to working temperature with the fibre plug initially uncompacted. Slight compacting pressure is applied as by finger pressure until the engine revs evenly. A faster than normal idling speed may then be adjusted by adjusting the carburettor slow running jet.
On engines with dual carburettors, one device can be fitted by each carburettor.
It has been found that when the device is fitted to automobile engines, fuel economies have been achieved in terms of miles per gallon or kilometers per litre.
At the same time, the engine appears to run better and cold start better.
The device may also be used to adapt an engine to different fuel grades including lead free.

Claims (12)

1. A method for operating an internal combustion engine having carburettor means supplying a fuel/air mixture into an inlet manifold, comprising admitting air into said manifold downstream of said carburettor means.
2. A method according to claim 1, comprising admitting said air through a restricted orifice.
3. A method according to claim 1 or claim 2, comprising admitting said air just downstream of said carburettor means.
4. A method according to any one of claims 1 to 3, in which the air is admitted at a rate dependent on flow rate of fuel/air mixture through the manifold.
5. A method according to any one of claims 1 to 4, in which the air is admitted through a venturi section.
6. A method according to any one of claims 1 to 5, in which the air is filtered.
7. An integral combustion engine performance modifying device comprising an air inlet attachment adapted for installation to an inlet manifold downstream of the engine carburettor means.
8. A device according to claim 7, comprising a threaded section for insertion into a drilled and tapped aperture in the manifold wall.
9. A device according to claim 7 or claim 8, comprising a venturi section inlet.
10. A device according to any one of claims 7 to 9, comprising filter means.
11. A device according to any one of claims 7 to 10, comprising air admission adjustment means.
12. A device according to claim 11, said adjustment means comprising compactable filter means.
GB8822814A 1987-10-01 1988-09-29 Adding air to i.c. engine mixture intake manifolds Withdrawn GB2210929A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8822814A GB2210929A (en) 1987-10-01 1988-09-29 Adding air to i.c. engine mixture intake manifolds

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB878723092A GB8723092D0 (en) 1987-10-01 1987-10-01 I c engine
GB8822814A GB2210929A (en) 1987-10-01 1988-09-29 Adding air to i.c. engine mixture intake manifolds

Publications (2)

Publication Number Publication Date
GB8822814D0 GB8822814D0 (en) 1988-11-02
GB2210929A true GB2210929A (en) 1989-06-21

Family

ID=26292804

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8822814A Withdrawn GB2210929A (en) 1987-10-01 1988-09-29 Adding air to i.c. engine mixture intake manifolds

Country Status (1)

Country Link
GB (1) GB2210929A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB184045A (en) * 1921-07-23 1922-08-10 Albert Ernest Davies Improvements in extra air valves for internal combustion engines
GB197714A (en) * 1922-01-18 1923-05-18 Arthur Graham France New or improved secondary air supply means for internal combustion engines
GB215807A (en) * 1923-01-09 1924-05-09 Ernest Forder Novel or improved extra air valve for use as an equalising valve for internal combustion engines
GB300779A (en) * 1927-11-05 1928-11-22 Ernest James Goodyear New or improved extra air control device for use with internal combustion engines
US4160433A (en) * 1978-02-17 1979-07-10 Olson Engineering Inc. Modulating air control valve
US4373500A (en) * 1981-09-25 1983-02-15 Haynes Louis E Carburetor air injection system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB184045A (en) * 1921-07-23 1922-08-10 Albert Ernest Davies Improvements in extra air valves for internal combustion engines
GB197714A (en) * 1922-01-18 1923-05-18 Arthur Graham France New or improved secondary air supply means for internal combustion engines
GB215807A (en) * 1923-01-09 1924-05-09 Ernest Forder Novel or improved extra air valve for use as an equalising valve for internal combustion engines
GB300779A (en) * 1927-11-05 1928-11-22 Ernest James Goodyear New or improved extra air control device for use with internal combustion engines
US4160433A (en) * 1978-02-17 1979-07-10 Olson Engineering Inc. Modulating air control valve
US4373500A (en) * 1981-09-25 1983-02-15 Haynes Louis E Carburetor air injection system

Also Published As

Publication number Publication date
GB8822814D0 (en) 1988-11-02

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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)