EP0302438B1 - Intake conduit part of an internal-combustion engine - Google Patents

Intake conduit part of an internal-combustion engine Download PDF

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Publication number
EP0302438B1
EP0302438B1 EP88112500A EP88112500A EP0302438B1 EP 0302438 B1 EP0302438 B1 EP 0302438B1 EP 88112500 A EP88112500 A EP 88112500A EP 88112500 A EP88112500 A EP 88112500A EP 0302438 B1 EP0302438 B1 EP 0302438B1
Authority
EP
European Patent Office
Prior art keywords
combustion engine
throttle valve
trough
internal combustion
intake pipe
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.)
Expired - Lifetime
Application number
EP88112500A
Other languages
German (de)
French (fr)
Other versions
EP0302438A1 (en
Inventor
Anton Schäffer
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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Filing date
Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP0302438A1 publication Critical patent/EP0302438A1/en
Application granted granted Critical
Publication of EP0302438B1 publication Critical patent/EP0302438B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02M15/00—Carburettors with heating, cooling or thermal insulating means for combustion-air, fuel, or fuel-air mixture
    • F02M15/02—Carburettors with heating, cooling or thermal insulating means for combustion-air, fuel, or fuel-air mixture with heating means, e.g. to combat ice-formation
    • F02M15/022—Carburettors with heating, cooling or thermal insulating means for combustion-air, fuel, or fuel-air mixture with heating means, e.g. to combat ice-formation near to manually operated throttle valve
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling

Definitions

  • the invention relates to a suction line part of the type specified in the preamble of the first claim and is based on the generic DE-OS 1576355.
  • a device for venting the housing of injection internal combustion engines in which a ventilation line connected to the machine housing is connected to the line system for the intake air at a point upstream of the throttle valve.
  • the flap connection for the throttle valve or an adjacent line part has a heat exchanger for a heating medium.
  • ice formation in the throttle valve area can still be determined in some cases. Those ice formations are caused by condensate accumulating after the internal combustion engine has been switched off, which finally freezes - since there is no heating effect when the internal combustion engine is at a standstill.
  • the object of the invention is therefore to develop such a suction line part in such a way that the risk of icing of the throttle valve caused by the latter effect is also prevented.
  • crankcase ventilation line By opening the crankcase ventilation line into a geodetically underlying trough-shaped recess of the intake line part, it is ensured that the condensate that accumulates in the mouth region after the internal combustion engine has been switched off collects in that trough-shaped recess and possibly causes ice formation there. This reliably prevents the throttle valve from icing up.
  • heating is carried out according to claim 2 by means of a heated fluid (for example the coolant of the internal combustion engine), it is particularly advantageous to provide the trough-shaped depression in an attachment element, the wall of which is flowed through by this fluid and which is detachably connected to the intake line part, since this when disassembling the intake line part, the fluid circuit does not have to be opened, but that attachment element can simply be separated from the intake line part.
  • a heated fluid for example the coolant of the internal combustion engine
  • a throttle body is shown as an intake line part with a flange-mounted attachment element in section.
  • a schematically illustrated throttle valve connector (intake duct part 1) is arranged in the intake tract of an internal combustion engine (not shown) and is provided with a throttle valve 3 which can be pivoted about the shaft 2. Upstream of that throttle valve 3 opens into a breakthrough 4 of the intake line part 1, a crankcase ventilation line 5, which branches off from a suitable location of the crankcase, not shown, of the internal combustion engine.
  • the crankcase ventilation line 5 is plugged onto a connecting piece 6 of an attachment element 7, which has a trough-shaped recess 8 and is flanged to the intake line part 1 by means of two screw connections 9a, 9b.
  • an annular channel 10 is provided, which is connected to the coolant circuit of the internal combustion engine via an inlet connection 11 and an outlet connection 12.
  • Condensate which forms in the area of the opening 4 when the fresh air guided through the intake line part 1 meets the blow-by gases guided through the crankcase ventilation line 5, partially collects in the trough-shaped depression 8.
  • the add-on element 7 is heated, icing up of this condensate is reliably ruled out.
  • condensate residues can freeze inside the trough-shaped depression 8, but do not have a disruptive effect. Without that trough-shaped depression 8, however, condensate residues would accumulate in the gap area 13 between the throttle valve 3 and the inner wall of the intake line part 1. Icing at this point would impede the freedom of movement or mobility of the throttle valve 3.
  • the trough-shaped depression 8 lying below is provided on the intake line part 1 in the mouth area of the ventilation line 5, that is to say in the area of the opening 4.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)

Description

Die Erfindung bezieht sich auf ein Ansaugleitungsteil der im Oberbegriff des ersten Anspruchs angegebenen Art und geht aus von der gattungsbildenden DE-OS 1576355.The invention relates to a suction line part of the type specified in the preamble of the first claim and is based on the generic DE-OS 1576355.

Beschrieben ist darin eine Vorrichtung zum Entlüften des Gehäuses von Einspritz-Brennkraftmaschinen, bei der eine an das Maschinengehäuse angeschlossene Entlüftungsleitung an einer Stelle stromauf zur Drosselklappe mit dem Leitungssystem für die Ansaugluft in Verbindung steht. Um zu vermeiden, daß an der Drosselklappe bzw. an den benachbarten Wandungen bei tieferen Temperaturen Eisbildung, hervorgerufen durch Kondensate aus der Entlüftungsleitung, auftritt, weist der Klappenstutzen für die Drosselklappe bzw. ein benachbartes Leitungsteil einen Wärmetauscher für ein Heizmittel auf.Described therein is a device for venting the housing of injection internal combustion engines, in which a ventilation line connected to the machine housing is connected to the line system for the intake air at a point upstream of the throttle valve. In order to avoid the formation of ice on the throttle valve or on the adjacent walls at lower temperatures, caused by condensates from the ventilation line, the flap connection for the throttle valve or an adjacent line part has a heat exchanger for a heating medium.

Wenngleich mit Hilfe jener Vorrichtung die Vereisungsgefahr der Drosselklappe deutlich herabgesetzt werden kann, sind damit dennoch teilweise Eisbildungen im Drosselklappenbereich feststellbar. Jene Eisbildungen werden hervorgerufen durch sich nach Abstellen der Brennkraftmaschine ansammelndes Kondensat, welches schließlich - da bei stillstehender Brennkraftmaschine keine Heizwirkung erfolgt - gefriert.Although the risk of icing up of the throttle valve can be significantly reduced with the aid of that device, ice formation in the throttle valve area can still be determined in some cases. Those ice formations are caused by condensate accumulating after the internal combustion engine has been switched off, which finally freezes - since there is no heating effect when the internal combustion engine is at a standstill.

Aufgabe der Erfindung ist es daher, ein derartiges Ansaugleitungsteil so weiterzubilden, daß auch jene durch den letztgenannten Effekt bedingte Vereisungsgefahr der Drosselklappe verhindert wird.The object of the invention is therefore to develop such a suction line part in such a way that the risk of icing of the throttle valve caused by the latter effect is also prevented.

Diese Aufgabe wird durch die kennzeichnenden Merkmale des ersten Anspruchs gelöst.This object is achieved by the characterizing features of the first claim.

Indem die Kurbelgehäuse-Entlüftungsleitung in eine geodätisch untenliegende wannenförmige Vertiefung des Ansaugleitungsteiles mündet, ist sichergestellt, daß sich das nach dem Abstellen der Brennkraftmaschine im Mündungsbereich ansammelnde Kondensat in jener wannenförmigen Vertiefung sammelt und allenfalls dort Eisbildung hervorruft. Ein Vereisen der Drosselklappe ist auf diese Weise sicher vermieden.By opening the crankcase ventilation line into a geodetically underlying trough-shaped recess of the intake line part, it is ensured that the condensate that accumulates in the mouth region after the internal combustion engine has been switched off collects in that trough-shaped recess and possibly causes ice formation there. This reliably prevents the throttle valve from icing up.

Erfolgt gemäß Anspruch 2 die Beheizung mittels eines erwärmten Fluids (beispielsweise dem Kühlmittel der Brennkraftmaschine), so ist es besonders vorteilhaft, die wannenförmige Vertiefung in einem Anbauelement vorzusehen, dessen Wandung von diesem Fluid durchströmt ist und welches lösbar mit dem Ansaugleitungsteil verbunden ist, da hiermit bei einer Demontage des Ansaugleitungsteiles der Fluidkreislauf nicht geöffnet werden muß, sondern einfach jenes Anbauelement vom Ansaugleitungsteil getrennt werden kann.If heating is carried out according to claim 2 by means of a heated fluid (for example the coolant of the internal combustion engine), it is particularly advantageous to provide the trough-shaped depression in an attachment element, the wall of which is flowed through by this fluid and which is detachably connected to the intake line part, since this when disassembling the intake line part, the fluid circuit does not have to be opened, but that attachment element can simply be separated from the intake line part.

Im folgenden wird die vorliegende Erfindung anhand eines bevorzugten Ausführungsbeispieles näher beschrieben. Dargestellt ist ein Drosselklappenstutzen als Ansaugleitungsteil mit angeflanschtem Anbauelement im Schnitt.The present invention is described in more detail below on the basis of a preferred exemplary embodiment. A throttle body is shown as an intake line part with a flange-mounted attachment element in section.

Ein schematisch dargestellter Drosselklappenstutzen (Ansaugleitungsteil 1) ist im nicht gezeigten Ansaugtrakt einer Brennkraftmaschine angeordnet und mit einer um die Welle 2 schwenkbaren Drosselklappe 3 versehen. Stromauf jener Drosselklappe 3 mündet in einen Durch bruch 4 des Ansaugleitungsteiles 1 eine Kurbelgehäuse-Entlüftungsleitung 5, welche abzweigt von einer geeigneten Stelle des nicht dargestellten Kurbelgehäuses der Brennkraftmaschine. Die Kurbelgehäuse-Entlüftungsleitung 5 ist dabei auf einen Stutzen 6 eines Anbauelementes 7 aufgesteckt, welches eine wannenförmige Vertiefung 8 aufweist und mittels zweier Schraubverbindungen 9a, 9b am Ansaugleitungsteil 1 angeflanscht ist. In der Wandung des Anbauelementes 7 ist ein Ringkanal 10 vorgesehen, welcher über einen Zulaufstutzen 11 sowie einen Ablaufstutzen 12 mit dem Kühlmittelkreislauf der Brennkraftmaschine in Verbindung steht.A schematically illustrated throttle valve connector (intake duct part 1) is arranged in the intake tract of an internal combustion engine (not shown) and is provided with a throttle valve 3 which can be pivoted about the shaft 2. Upstream of that throttle valve 3 opens into a breakthrough 4 of the intake line part 1, a crankcase ventilation line 5, which branches off from a suitable location of the crankcase, not shown, of the internal combustion engine. The crankcase ventilation line 5 is plugged onto a connecting piece 6 of an attachment element 7, which has a trough-shaped recess 8 and is flanged to the intake line part 1 by means of two screw connections 9a, 9b. In the wall of the add-on element 7, an annular channel 10 is provided, which is connected to the coolant circuit of the internal combustion engine via an inlet connection 11 and an outlet connection 12.

Kondensat, welches sich im Bereich des Durchbruchs 4 beim Zusammentreffen der durch das Ansaugleitungsteil 1 geführten Frischluft mit den durch die Kurbelgehäuse-Entlüftungsleitung 5 geführten Blow-by-Gasen bildet, sammelt sich teilweise in der wannenförmigen Vertiefung 8 an. Solange das Anbauelement 7 beheizt ist, ist ein Vereisen dieses Kondensates sicher ausgeschlossen. Bei stillstehender Brennkraftmaschine sowie sich abkühlendem Anbauelement 7 können zwar Kondensatreste innerhalb der wannenförmigen Vertiefung 8 vereisen, wirken sich dabei aber nicht störend aus. Ohne jene wannenförmige Vertiefung 8 hingegen würden sich Kondensatreste im Spaltbereich 13 zwischen der Drosselklappe 3 sowie der Innenwand des Ansaugleitungsteiles 1 ansammeln. Eine Vereisung an dieser Stelle wäre der Freigängigkeit bzw. Bewegbarkeit der Drosselklappe 3 hinderlich.Condensate, which forms in the area of the opening 4 when the fresh air guided through the intake line part 1 meets the blow-by gases guided through the crankcase ventilation line 5, partially collects in the trough-shaped depression 8. As long as the add-on element 7 is heated, icing up of this condensate is reliably ruled out. When the internal combustion engine is at a standstill and the add-on element 7 is cooling, condensate residues can freeze inside the trough-shaped depression 8, but do not have a disruptive effect. Without that trough-shaped depression 8, however, condensate residues would accumulate in the gap area 13 between the throttle valve 3 and the inner wall of the intake line part 1. Icing at this point would impede the freedom of movement or mobility of the throttle valve 3.

Um also ein mögliches Vereisen der Drosselklappe 3 auch bei stillstehender Brennkraftmaschine zu vermeiden, ist erfindungsgemäß am Ansaugleitungsteil 1 im Mündungsbereich der Entlüftungsleitung 5, also im Bereich des Durchbruches 4, die geodätisch unten liegende wannenförmige Vertiefung 8 vorgesehen.In order to avoid possible icing of the throttle valve 3 even when the internal combustion engine is at a standstill, according to the invention, the trough-shaped depression 8 lying below is provided on the intake line part 1 in the mouth area of the ventilation line 5, that is to say in the area of the opening 4.

Claims (2)

1. An intake pipe part of an internal combustion engine with a crankcase air vent pipe opening out in the vicinity of a throttle valve and also with a heated orifice region, characterised in that the crankcase air vent pipe (5) opens out into a trough-shaped depression (8) of the intake pipe part (1) lying geodetically beneath.
2. An intake pipe part according to claim 1, characterised in that the trough-shaped depression (8) is provided in an attachment element (7) which is detachably connected with the intake pipe part (2), and the wall of which has a heated fluid flowing through it.
EP88112500A 1987-08-07 1988-08-02 Intake conduit part of an internal-combustion engine Expired - Lifetime EP0302438B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3726332A DE3726332C1 (en) 1987-08-07 1987-08-07 Intake pipe part of an internal combustion engine
DE3726332 1987-08-07

Publications (2)

Publication Number Publication Date
EP0302438A1 EP0302438A1 (en) 1989-02-08
EP0302438B1 true EP0302438B1 (en) 1990-08-01

Family

ID=6333304

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88112500A Expired - Lifetime EP0302438B1 (en) 1987-08-07 1988-08-02 Intake conduit part of an internal-combustion engine

Country Status (3)

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EP (1) EP0302438B1 (en)
DE (1) DE3726332C1 (en)
ES (1) ES2017111B3 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3824791A1 (en) * 1988-07-21 1990-01-25 Porsche Ag CRANKCASE VENTILATION
DE3932300C2 (en) * 1989-09-28 2003-03-06 Siemens Ag throttle body
GB9311883D0 (en) * 1993-06-09 1993-07-28 Gen Motors Corp A throttle mechanism
DE4433285A1 (en) * 1994-09-19 1996-03-21 Motoren Werke Mannheim Ag Combustion air line of an internal combustion engine
DE19512941C2 (en) * 1995-04-06 1997-02-20 Bosch Gmbh Robert Device for connecting an exhaust gas recirculation system to a suction system of an internal combustion engine
DE29516861U1 (en) * 1995-10-25 1996-04-11 Witzenmann GmbH, Metallschlauch-Fabrik Pforzheim, 75175 Pforzheim Fastener
DE19709910C2 (en) 1997-03-11 1999-05-20 Daimler Chrysler Ag Crankcase ventilation for an internal combustion engine
DE19911214A1 (en) * 1999-03-12 2000-09-21 Daimler Chrysler Ag Method for operating an internal combustion engine includes a regulating control unit for generating adjustment signals and a throttle valve adjusted by a modulator in a suction pipe.
DE19928727C2 (en) 1999-06-23 2001-04-26 Daimler Chrysler Ag Device for venting the crankcase of an at least largely throttle-free internal combustion engine
DE10237762A1 (en) * 2002-08-17 2004-02-26 Mahle Filtersysteme Gmbh Heating module for recycled vehicle engine crankcase gases, is located near entry to air inlet manifold, and includes two sets of electrical heater windings
DE10326881A1 (en) * 2003-06-14 2004-12-30 Daimlerchrysler Ag Throttle assembly for engine having vent line upstream of heated butterfly valve, has additional heater for vent line
DE102004013763A1 (en) * 2004-03-20 2005-10-13 Audi Ag Automotive piston engine has crankcase air bleed pipe via oil trap to carburettor inlet
DE102004031499B4 (en) * 2004-06-30 2009-08-13 Daimler Ag Crankcase vent line
DE102004043545A1 (en) * 2004-09-09 2006-03-30 Audi Ag Method for venting gasses from crankcase especially in IC engine has the venting duct fed into the inlet manifold duct at an acute angle with flow control profiles
ITMI20060942A1 (en) * 2006-05-12 2007-11-13 Iveco Spa HEATING SYSTEM OF OIL VAPORS IN EXTERNAL CIRCULATION AT A VEHICLE ENGINE
DE102007016205B4 (en) 2007-04-04 2015-06-25 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Apparatus for heating a crankcase breather in a hybrid vehicle
DE102010024172B4 (en) * 2010-06-17 2021-02-11 Volkswagen Ag Internal combustion engine and method for operating an internal combustion engine

Family Cites Families (6)

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FR890659A (en) * 1942-07-17 1944-02-15 Processes and installation for supplying internal combustion engines with alcohol or other fuels
FR1283901A (en) * 1960-12-23 1962-02-09 Sibe Improvements to carburettors for internal combustion engines
US3088447A (en) * 1961-12-05 1963-05-07 Alvin H Tutt Control for automotive exhaust air pollution
US3277876A (en) * 1964-09-30 1966-10-11 Ford Motor Co Crankcase ventilation system for an internal combustion system
US3280808A (en) * 1965-01-04 1966-10-25 Ford Motor Co Engine crankcase ventilating system
DE1576355A1 (en) * 1967-03-21 1970-04-09 Daimler Benz Ag Device for venting the housing of injection internal combustion engines

Also Published As

Publication number Publication date
ES2017111B3 (en) 1991-01-01
DE3726332C1 (en) 1988-06-23
EP0302438A1 (en) 1989-02-08

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