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EP0172180A1 - Installation d'amenee d'air additionnel pour carburateurs de moteurs a combustion interne - Google Patents

Installation d'amenee d'air additionnel pour carburateurs de moteurs a combustion interne

Info

Publication number
EP0172180A1
EP0172180A1 EP85900602A EP85900602A EP0172180A1 EP 0172180 A1 EP0172180 A1 EP 0172180A1 EP 85900602 A EP85900602 A EP 85900602A EP 85900602 A EP85900602 A EP 85900602A EP 0172180 A1 EP0172180 A1 EP 0172180A1
Authority
EP
European Patent Office
Prior art keywords
cross
duct
additional air
intermediate member
section
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Withdrawn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
EP85900602A
Other languages
German (de)
English (en)
Inventor
Ferdinand Ocenasek
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.)
TRENNER Otto sen
Original Assignee
TRENNER Otto sen
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 TRENNER Otto sen filed Critical TRENNER Otto sen
Publication of EP0172180A1 publication Critical patent/EP0172180A1/fr
Withdrawn legal-status Critical Current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
    • F02M23/001—Apparatus for adding secondary air to fuel-air mixture built into a flange
    • 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

Definitions

  • the invention relates to a device for the supply of additional air in carburetor engines, consisting of an intermediate member which can be inserted downstream of the carburetor into the intake pipe or is fixedly mounted in the intake manifold with a flow nozzle-like flow opening corresponding to the cross section of the intake pipe.
  • a number of devices which, by introducing additional air after the dosing valve of the carburetor, should enable the air-fuel mixture drawn in by the engine to become leaner, in order in this way to reduce both the fuel consumption and the emission values (CO and HC + NO x ). to reduce.
  • the invention has for its object to provide a device for supplying additional air in carburetor engines, which allows exact metering of the additional air over the entire operating range of the engine and which, especially in the idle and part-load range, an improved mixture preparation and thereby an improved Geraisch distribution to the individual cylinders.
  • This is achieved according to the invention in that the supply air duct is split into two parallel sub-ducts within the intermediate member, which are combined again into a single duct before they enter the ring duct, and in that the one sub-duct has a duct section which widens conically in the direction of flow of the additional air and which in the area of the narrowest point by a valve body loaded by a spring, e.g. by a ball that can be closed.
  • Around the central opening of the intermediate member there are preferably obliquely arranged slots as connecting channels between the annular channel and the suction line.
  • the metering of the additional air takes place advantageously depending on the prevailing intake manifold vacuum in that, depending on the intake manifold pressure, the valve ball is lifted from its seat more or less, which, due to the conical expansion of the channel in the region of the valve ball, opens up a larger cross-sectional area with increasing vacuum
  • the flow characteristic can be easily adapted to the operating range of different engine types with good accuracy.
  • the bias of the spring for the valve body can be changed by means of an adjusting screw screwed into the intermediate member.
  • the seat of the valve ball can be armored and ground, as a result of which the exact dosage of the valve Set air is retained over a very long period of operation, since the valve ball cannot be worked into the seat and the contour of the cross-sectional expansion cannot change. Grinding the reinforcement ensures a tight fit of the valve ball, so that the valve's point of use, once set, is retained exactly over a long period of operation.
  • the two subchannels each open into the annular channel.
  • the supply of additional air to the ring channel or the distribution of the additional air in the ring channel can thus be further improved by arranging the opening of the sub-channels appropriately.
  • a disadvantageous mutual influence of the two sub-channels is avoided.
  • the supply air duct, the partial ducts, the cross-sectional expansion with the valve ball and the spring and the adjusting screw are arranged in a separate duct body.
  • the channel body can be manufactured independently of the intermediate flange.
  • the channel body can e.g. be an injection molded part, but also consist of a heat, petrol and oil resistant plastic.
  • the intermediate member 1 has a central bore into which a valve-nozzle-like ring is inserted. Between the inner part of the intermediate member 1 and and the insert, an annular channel 3 is recessed, from which connecting channels lead through the insert in the area of the narrowest cross section into the interior of the suction line 4.
  • the connecting channels are designed as slots which are arranged obliquely with respect to the flow direction 4 of the intake mixture and which bridge almost the entire circumference of the narrowest cross section of the insert.
  • the intermediate link 1 has an attachment on one side, in which there is an air supply duct 5 which splits into sub-ducts 10 and 11.
  • the subchannel 7 there is a cross-sectional widening which is conical in the direction of flow of the additional air and can be closed by a spring-loaded valve ball 8 in the area of its narrowest point.
  • the conical cross-sectional expansion and the valve ball 8 together form a flow system based on the float principle.
  • a larger cross-section of the sub-channel is released with increasing ball stroke, thus increasing the flow of the additional air.
  • the spring is supported on one side on the valve ball 8 and on the other side on an adjusting screw 9, which is screwed into the shoulder and with which the spring preload can be changed. This makes it possible to change the opening point of the valve and also to adjust the flow characteristics through the valve according to the different requirements for different engines.
  • an adjusting screw 10 is provided, which is also screwed into neck 2 and which is provided with a conical tip.
  • the adjusting screw 10 serves to limit the maximum flow through subchannel 7, by performing a conical one A very sensitive adjustment of the additional air is possible.
  • the cross section of the second subchannel 6 can also be changed by an adjusting screw 11, which is also screwed into the extension 2.
  • the two subchannels 6 and 7 are merged into a single channel after the adjusting screws 10 and 11, which opens into an annular channel 3 of the intermediate member 1.
  • the two subchannels 6 and 7 each can be separate, e.g. to open into the ring channel at opposite points.
  • FIG. 3 shows a closure plug 12 which is insignificant for the invention, but is necessary for the production.
  • a cross-sectional widening Arranged in the subchannel 7 is a cross-sectional widening which is conical in the direction of flow of the additional air and can be closed by a spring-loaded valve ball 8 in the area of its narrowest point.
  • the Kebei angle 24 is approximately 16 degrees, for engines with a displacement of over 2000 cm up to 24 degrees A larger displacement is required because, according to the larger displacement, more additional air must also be supplied. This is achieved in that the valve cross-section released with the same valve ball stroke is correspondingly larger due to the larger cone angle.
  • the reinforcement of the seat of the valve ball 8 is primarily for durability
  • the device according to the invention is of great importance. This prevents the valve ball 8 from being worked into the seat and the associated change in the flow characteristics.
  • the length of the conical cross-sectional widening 13 is directly related to the cone angle 24 °. As an example, some dimensions are given as guidelines for engines with a smaller displacement:
  • the diameter of the valve ball 8 is 3.5 mm, the largest diameter of the cross-sectional expansion 9 now and the length of the conical cross-sectional expansion 12 mm.
  • the supply air supply and the combustion process are also optimized to such an extent that, in addition to the considerable fuel savings, the emission values (CO and HC + NO x ) are below the permissible values even without the use of catalysts, which makes the switch to unleaded fuels essential facilitated.

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

Installation d'amenée d'air additionnel aux carburateurs de moteurs à combustion interne, se composant d'un organe intermédiaire (1) placé en aval du carburateur, avec une ouverture de passage en forme de tube de Venturi et entourée d'un canal annulaire (3) qui est en liaison, grâce à un canal d'amenée (5), avec l'atmosphère et, grâce à des fentes obliques disposées dans la zone de section transversale de l'ouverture de passage la plus étroite, avec l'intérieur de la conduite d'aspiration. Le canal d'amenée (5) possède un segment de canal (13) s'élargissant coniquement dans la direction d'écoulement de l'air additionnel et pouvant être fermé par une bille (8) armée par un ressort.
EP85900602A 1984-02-14 1985-02-05 Installation d'amenee d'air additionnel pour carburateurs de moteurs a combustion interne Withdrawn EP0172180A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH693/84 1984-02-14
CH69384 1984-02-14

Publications (1)

Publication Number Publication Date
EP0172180A1 true EP0172180A1 (fr) 1986-02-26

Family

ID=4192952

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85900602A Withdrawn EP0172180A1 (fr) 1984-02-14 1985-02-05 Installation d'amenee d'air additionnel pour carburateurs de moteurs a combustion interne

Country Status (2)

Country Link
EP (1) EP0172180A1 (fr)
WO (1) WO1985003741A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9021162D0 (en) * 1990-09-28 1990-11-14 Mudford Bruce N S Venturi assembly
US6113078A (en) * 1998-03-18 2000-09-05 Lytesyde, Llc Fluid processing method
US7104528B2 (en) 2003-08-15 2006-09-12 Lytesyde, Llc Fuel processor apparatus and method
US7717096B2 (en) 2006-01-23 2010-05-18 Lytesyde, Llc Fuel processor apparatus and method
US8028674B2 (en) 2007-08-07 2011-10-04 Lytesyde, Llc Fuel processor apparatus and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB495321A (en) * 1937-05-08 1938-11-08 Edgar Roland Yemm Improvements in or relating to means for regulating the supply of combustible mixture and air to internal combustion engines
FR2123958A5 (fr) * 1971-02-04 1972-09-15 Chabanel Jean
DE2825773A1 (de) * 1977-11-23 1979-05-31 Letunic Vergaserzusatz

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8503741A1 *

Also Published As

Publication number Publication date
WO1985003741A1 (fr) 1985-08-29

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19851002

AK Designated contracting states

Designated state(s): AT DE FR GB NL SE

17Q First examination report despatched

Effective date: 19860611

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19861021

RIN1 Information on inventor provided before grant (corrected)

Inventor name: OCENASEK, FERDINAND