US3799138A - Cold starting installation for internal combustion engines - Google Patents

Cold starting installation for internal combustion engines Download PDF

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Publication number
US3799138A
US3799138A US00234712A US23471272A US3799138A US 3799138 A US3799138 A US 3799138A US 00234712 A US00234712 A US 00234712A US 23471272 A US23471272 A US 23471272A US 3799138 A US3799138 A US 3799138A
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US
United States
Prior art keywords
injection
suction pipe
internal combustion
fuel
combustion engine
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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 - Lifetime
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US00234712A
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English (en)
Inventor
F Porsche
R Binder
E Weyersberg
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Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Filing date
Publication date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
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Publication of US3799138A publication Critical patent/US3799138A/en
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    • 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
    • F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
    • F02M1/16—Other means for enriching fuel-air mixture during starting; Priming cups; using different fuels for starting and normal operation
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/08—Carburetor primers

Definitions

  • the present invention relates to a cold starting installation for internal combustion engines, especially for multi-cylinder internal combustion engines of. motor vehicles, which consist of individual injection lines connected with the fuel line and of an electrically controlled cold-start valve for the control of the fuel injection quantity, by means of which during the starting of the internal combustion engine a predetermined fuel quantity is injected by way of the injection lines into the suction pipes of the internal combustion engine.
  • the aim of the present invention is the arrangement and fastening of the injection lines of a cold-starting installation for internal combustion engines of motor vehicles.
  • the present invention in contradistinction thereto, is concerned with the task to provide a cold-starter installation of the aforementioned type which excels by a simple and safe arrangement of the injection lines and by low manufacturing costs and which assures a safe operation preventing an air contamination and danger of fire.
  • a stepped bore formed by differently large diameters is arranged laterally at the suction pipe of the internal combustion engine into which the discharge ends of the injection lines provided with nozzles are inserted and are held in position therein.
  • the discharge ends of the injection lines are constructed conically and extend into the interior space of a nozzle which is constructed pot shaped.
  • the nozzle is held in position by the discharge end of the injection line.
  • the discharge ends of the injection lines are constructed cylindrically and are provided with a radial recess into which is inserted a disk-shaped nozzle adapted to snap into the recess.
  • the disk-shaped nozzle is held in position by the clamping force of the material of the injection lines.
  • the injection lines consisting of conventional synthetic plastic material, such as synthetic resinous materials, are retained in the stepped bores of the suction pipe also consisting of similar or different synthetic plastic material of any known type of spring clamps whereby the suction pipes includes cast-on or molded-on bosses for the fastening of the actuating linkage for the carburetors of the internal combustion engines.
  • spring clamps are arranged laterally at the suction pipe within the area of the stepped bore and abut with their free end against the injection line coordinated to the suction pipe.
  • the nozzles consist selectively of sheet metal or of synthetic resinous material of the class of polyamides or polyfluoro-olefines.
  • the advantages achieved with the present invention consist in particular in that by the described arrangement of the injection lines consisting of synthetic resinuous material a secure fastening and simple manufacture of the injection lines is made possible by simple means for the cold-starting installation for multicylinder internal combustion engines, in which in case of eventually occurring troubles a rapid disassembly and assembly is made possible. Furthermore, as a result of the fastening of the injection lines at the suction pipes consisting of synthetic resinous material the residual fuel quantity remaining in the injection lines after the injection, is sucked off with certainty into the combustion space of the internal combustion engine so that the described disadvantages such as odor annoyance, fire danger, etc. are fabreachingly avoided.
  • the same can be manufactured with savings in costs and small expenditures whereby the assembly and mounting thereof in the stepped bore of the suction pipe as well as in the discharge endcan be carried out in a time-saving and simple manner.
  • the suction pipe can be manufactured together with all fastening and support means for actuating linkage whereby the stepped bore can be cast-in or molded-in at the time of the manufacture so that separate after-finishing operations of the suction pipe are dispensed with.
  • FIG. 1 is a schematic view of a cold-starter installation for a multi-cylinder internal combustion engine in accordance with the present invention
  • FIG. 2 is a partial longitudinal cross-sectional view through one of the suction pipes of the internal com bustion engine according to FIG. 1 with the fastening of a pot-shaped nozzle by means of the injection line in accordance with the present invention
  • FIG. 3 is a partial longitudinal cross-sectional view through the walls of the suction pipe within the area'of the stepped bore according to FIG. 2 with a modified fastening of a disk-shaped nozzle by the injection line in accordance with the present invention.
  • the fuel system of a multi-cylinder internal combustion engine consists of the fuel tank 1 which is connected by way of a line 2 with a fuel tank 1 which is connected by way of a line 2 with a fuel pump 3. From the fuel pump 3 a further fuel line 4 leads to the individual carburetors 5 of the internal combustion engine.
  • the fuel line 4 further terminates in a cold-starting valve 6 from which injection lines 7 (FIGS. 1 and 2) or 7' (FIG. 3) lead to the individual suction pipes 8 which are arranged between the carburetors and the cylinder heads (not shown) of the internal combustion engine.
  • Bosses 9, 9' are laterally cast-on or molded-on at the suction pipes 8.
  • the boss 9 serves for the accommodation of a stepped bore 10 extending obliquely to the direction of flow of the gas mixture and the boss 9' for the fastening of an actuating linkage (not shown) for the throttle valves of the carburetors 5.
  • An injection line 7 or 7 is inserted into the stepped bore 10 of the suction pipe 8 and is held in its position by a spring clamp 11 secured at the boss 9. All the other injection lines 7, 7' are arranged in the same manner and secured in the manner to be described more fully hereinafter.
  • the discharge ends 12 (FIG. 2) or 13 (FIG.
  • the discharge end 12 is constructed conically at its outer diameter and serves for receiving a pot-shaped nozzle 14.
  • the discharge end 13 is constructed cylindrically and includes a radial recess 15 into which is inserted a disk-shaped nozzle 16.
  • the nozzles 14 or 16 are constructed as formed or shaped parts of brass whereby the nozzle 14 abuts on the shoulder 17 formed by the stepped bore 10 and is held there against by the discharge end 12 of the injection line 7.
  • the discharge end 13 rests on the shoulder 17 of the stepped bore 10.
  • the cold-starter valve 6 opens the supply of the fuel from the fuel line 4 into the injection lines 7 or 7 over a certain period of time depending on the temperature of the internal combustion engine.
  • the fuel supplied by the pump 3 reaches by way of the nozzles 14 or 16 the interior space of the suction pipe 8 whereby the internal combustion engine is fed additionally with fuel during the starting operation.
  • the starting operation is facilitated thereby.
  • the cold starting valve 6 closes the feed line to the injection lines 7 or 7 whereby simultaneously the residual fuel quantity, which remains in the injection lines 7 or 7' is drawn off by the suction stroke of the internal combustion engine.
  • the latter can be disassembled and reassembled without auxiliary tools in that only the spring clamps 11 have to be lifted off from the abutment at the injection lines 7v or 7' whereby the injection lines 7 or 7' together with the nozzles 14 or 16 can be removed from the stepped bore 10 of the suction pipe 8.
  • a cold-starting installation for internal combustion engines with suction pipe means which includes individual injection lines connected with a fuel line and an electrically controlled cold-starting valve means for the control of the fuel injection quantity which is operable to inject a predetermined fuel quantity into the suction pipe means of the internal combustion engine during the starting of the internal combustion engine by way of the injection lines, characterized in that a stepped bore means is provided laterally at the suction pipe means of the internal combustion engine for the accommodation of a respective injection line, the discharge ends of the injection lines provided with nozzle means being inserted into the stepped bore means and being retained therein, characterized in that the discharge ends of the injection lines are constructed conically and extend in the interior space of a respective nozzle means which is constructed pot-shaped and rests on a shoulder of the stepped bore means, and characterized in that the nozzle means is retained in its position by the discharge end of the corresponding injection line.
  • a cold-starting installation for internal combustion engines with suction pipe means which includes individual injection lines connected with a fuel line and an electrically controlled cold-starting valve means for the control of the fuel injection quantity, which is operable to inject a predetermined fuel quantity into the section pipe means of the internal combustion engine during the starting of the internal combustion engine by way of the injection lines, characterized in that a stepped bore means is provided laterally at the suction pipe means of the internal combustion engine for the accommodation of a respective injection line, the discharge ends of the injection lines provided with nozzle means being inserted into the stepped bore means and being retained therein, and characterized in' that the discharge ends of the injection lines are constructed cylindrically and are provided with a radial recess into which is inserted a disk-shaped nozzle means.
  • a cold-starting installation for internal combustion engines characterized in that the engine is a multi-cylinderinternal combustion engine for motor vehicles which includes a separate suction pipe means for each cylinder equipped with its own carburetor.
  • a cold-starting installation for internal combustion engines with suction pipe means which includes individual injection lines connected with a fuel line and an electrically controlled cold-starting valve means for the control of the fuel injection quantity, which is operable to inject a predetermined fuel quantity into the suction pipe means of the internal combustion engine during the starting of the internal combustion engine by way of the injection lines, characterized in that a stepped bore means is provided laterally at the suction pipe means of the internal combustion engine for the accommodation of a respective injection line, the discharge ends of the injection lines provided with nozzle means being inserted into the stepped bore means and being retained therein, characterized in that the injection lines consist of synthetic resinous material and are held in the suction pipe means also consisting of synthetic resinous material by spring clamp means, the suction pipe means including integrally formed boss means for the fastening thereon of actuating linkage means for carburetor means of the internal combustion engine, characterized in that the spring clamp means are arranged laterally at the suction pipe means within the area of the stepped bore and abut with a free
  • a cold-starting installation for internal combustion engines with suction pipe means which includes indi vidual injection lines connected with a fuel line and an electrically controlled cold-starting valve means for the control of the fuel injection quantity, which is operable to inject a predetermined fuel quantity into the suction pipe means of the internal combustion engine during the starting of the internal combustion engine by way of the injection lines, characterized in that a stepped bore means is provided laterally at the suction pipe means of the internal combustion engine for the accommodation of a respective injection line, the discharge ends of the injection lines provided with nozzle means being inserted into the stepped bore means and being retained therein, characterized in that the injection lines consist of synthetic resinous material and are held in the suction pipe means also consisting of synthetic resinous material by spring clamp means, the suction pipe means including integrally formed boss means for the fastening thereon of actuating linkage means for carburetor means of the internal combustion engine, characterized in that the spring clamp means are arranged laterally at the suction pipe means within the area of the stepped bore and abut
  • a cold-starting installation characterized in that the disk-shaped nozzle means is held in position by the clamping force of the material of the injection line.
  • a fuel injection system for internal combustion engines comprising an individual carburator and suction pipe means for each cylinder of the internal combustion engine, each said suction pipe means having a stepped bore means laterally of the suction pipe means; a fuel line extending from a fuel pump to a first set of injection fuel lines, each line of said first set connected to one of said individual carburators; an electrically controlled cold-starting valve means further connected to said fuel line for controlling the injection of a predetermined fuel quantity into the suction pipe means during the starting of the internal combustion engine; a second set of injection fuel lines, each line of said second set extending from said cold-starting valve means to one of said individual suction pipe means and having a discharge end, each said discharge end of said second set of injection fuel lines being inserted into said stepped-bore means of corresponding suction pipe means; and nozzle means provided at the discharge ends of said second set of injection fuel lines in said stepped bores, wherein the discharge ends of the second set of injection lines are conical and wherein each respective nozzle means is pot-
  • spring clamp means are arranged laterally at the suction pipe means within the area of the stepped bore and abut with a free end of said spring clamp means, respectively, against the injection line of said second set, coordinated to the suction pipe means.
  • a fuel injection system for internal combustion engines comprising an individual carburator and suction pipe means for each cylinder of the internal combustion engine, each said suction pipe means having a stepped bore means laterally of the suction pipe means;
  • a fuel line extending from a fuel pump to a first set of injection fuel lines, each line of said first set connected to one of said individual carburators; an electrically controlled cold-starting valve means further connected to said fuel line for controlling the injection of a predetermined fuel quantity into the suction pipe means during the starting of the internal combustion engine; a second set of injection fuel lines, each line of said second set extending from said cold-starting valve means to one of said individual suction pipe means and having a discharge end, each said discharge end of said second set of injection fuel liries being inserted into said stepped-bore means of corresponding suction pipe means, said discharge ends of the second set of injection lines being cylindrical and being provided with a radial recess; and nozzle means provided at the discharge ends of said second set of injection fuel lines in said stepped bores, each respective nozzle means being disk-shaped and being inserted into the radial recess of each discharge end.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
US00234712A 1971-03-23 1972-03-15 Cold starting installation for internal combustion engines Expired - Lifetime US3799138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2114051A DE2114051B2 (de) 1971-03-23 1971-03-23 Kaltstart vorrichtung für Brennkraftmaschinen

Publications (1)

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US3799138A true US3799138A (en) 1974-03-26

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US00234712A Expired - Lifetime US3799138A (en) 1971-03-23 1972-03-15 Cold starting installation for internal combustion engines

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US (1) US3799138A (OSRAM)
DE (1) DE2114051B2 (OSRAM)
FR (1) FR2131334A5 (OSRAM)
GB (1) GB1342850A (OSRAM)
IT (1) IT940711B (OSRAM)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240384A (en) * 1978-06-26 1980-12-23 Centro Ricerche Fiat S.P.A. Induction units for internal combustion engines with petrol injection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2908095C2 (de) * 1979-03-02 1984-02-16 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzanlage für Brennkraftmaschinen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2860617A (en) * 1957-06-21 1958-11-18 Gen Motors Corp Enrichment device for fuel injection system
US2893365A (en) * 1956-05-31 1959-07-07 Gen Motors Corp Fuel injection means
US3494340A (en) * 1966-07-13 1970-02-10 Daimler Benz Ag Installation for producing a starting mixture for injection-type internal combustion engines
US3704702A (en) * 1969-10-22 1972-12-05 Nissan Motor Start-up fuel injection system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2893365A (en) * 1956-05-31 1959-07-07 Gen Motors Corp Fuel injection means
US2860617A (en) * 1957-06-21 1958-11-18 Gen Motors Corp Enrichment device for fuel injection system
US3494340A (en) * 1966-07-13 1970-02-10 Daimler Benz Ag Installation for producing a starting mixture for injection-type internal combustion engines
US3704702A (en) * 1969-10-22 1972-12-05 Nissan Motor Start-up fuel injection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240384A (en) * 1978-06-26 1980-12-23 Centro Ricerche Fiat S.P.A. Induction units for internal combustion engines with petrol injection

Also Published As

Publication number Publication date
DE2114051A1 (de) 1972-10-05
IT940711B (it) 1973-02-20
DE2114051C3 (OSRAM) 1974-12-12
FR2131334A5 (OSRAM) 1972-11-10
GB1342850A (en) 1974-01-03
DE2114051B2 (de) 1974-05-09

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