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
  • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
  • F02M35/10—Air intakes; Induction systems
  • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
  • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
• • 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
  • F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
  • F02M25/06—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding lubricant vapours
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
  • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
  • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
  • G01F1/68—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using thermal effects
  • G01F1/684—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow
  • G01F1/6842—Structural arrangements; Mounting of elements, e.g. in relation to fluid flow with means for influencing the fluid flow
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
  • G01F15/18—Supports or connecting means for meters
  • G01F15/185—Connecting means, e.g. bypass conduits
• • G—PHYSICS
  • G01—MEASURING; TESTING
  • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
  • G01F5/00—Measuring a proportion of the volume flow
• • 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 present invention relates to a Saugrohrabrough for installation in an intake system of an internal combustion engine, in particular a motor vehicle.
• the invention also relates to an intake system of an internal combustion engine, in particular of a motor vehicle, which is equipped with such a suction pipe section.
• An intake system for supplying fresh air to an internal combustion engine is usually equipped with an air mass meter, with the aid of which an engine control cooperates in order to be able to operate the internal combustion engine as desired.
• parameters for the fuel injection, for a throttle valve, for valve timing, for an exhaust gas recirculation and the like depend on the currently supplied air mass.
• Such an air mass meter which can be configured in particular as a hot-film knife, is comparatively sensitive to impurities. Accordingly, the air mass meter in the intake system is usually arranged downstream of an air filter. Furthermore, it is customary to initiate blow-by gases, which are recirculated from a crankcase of the internal combustion engine into the intake system, downstream of the air mass meter.
• the present invention is concerned with the problem of providing for an intake system of the aforementioned type or for an associated Saugrohrabites an improved or at least another embodiment, the characterized in particular by the fact that a simplified assembly and / or production and / or functional reliability results.
• the invention is based on the general idea, a tubular body which can be installed in the intake system, on the one hand with the air mass meter and on the other hand equipped with a bypass channel, the bypass channel is on the one hand connected to a blow-by-gas path and on the other hand extending in the tubular body Fresh air path section bypasses.
• the blow-by-gas path leads blow-by gas from the crankcase or from a cylinder head cover to the intake system, wherein the introduction into the intake system according to the proposal according to the invention now takes place via the bypass channel of the tubular body.
• the fresh air path is passed through the tubular body. In this fresh air path, the air mass meter protrudes inside the pipe body.
• the invention thus provides a suction pipe section which can be produced separately from the rest of the intake system and which comprises the pipe body with air mass meter and bypass duct.
• This integral design makes it particularly easy to ensure the introduction of the blow-by gas downstream of the air mass meter.
• the connections with which the suction pipe section is integrated into the intake system can be designed particularly simply such that, on the one hand, the connection to the fresh air path of the intake system and, on the other hand, the connection to the blow-by Gas path are easier to implement, in particular, a simultaneous connectability of the various paths can be realized.
• an integration of the two inlet-side connection points into a common interface is conceivable.
• bypass channel is integrally formed on the tubular body. It is conceivable in particular a production of the tubular body with the bypass duct made of plastic, in particular as a one-piece injection molded part.
• the pipe body with its inlet opening can be connected to an outlet of an upstream component of the intake system and be connectable with its outlet opening to an inlet of a downstream component of the intake system.
• defined interfaces can thereby be created which simplify the integration or installation of the suction pipe section into the suction system.
• the bypass channel opens into the downstream component of the intake system on the outlet side.
• both the fresh air path section of the pipe body and the bypass channel open into the downstream component of the intake system.
• this results in a common connection point or interface, which connects the Saugrohrabites with the downstream component of the intake system, at the same time the fresh air path and the bypass channel open into this downstream component, which in this downstream component, the admixture or initiation of the recirculated blow by-gases for fresh air flow takes place.
• the bypass channel can project on the outlet side in the fresh air flow direction via the outlet opening of the tubular body. As a result, the risk of backflow from blow-by gas to the air mass meter can be reduced.
• the suction pipe section proposed according to the invention makes it possible, in particular, to equip the bypass channel on the inlet side with a connecting piece which can be connected to an outlet of the blow-by gas path, basically any configurations being conceivable for this outlet.
• said outlet may be arranged on an upstream component of the intake system and, in particular, may even be integrally formed thereon.
• the connecting piece of the bypass channel can also be used, for example, to connect a hose, via which the blow-by gas is recycled.
• appropriate coupling agents can be used, which allow mounting and dismounting of the hose.
• Fig. 2 is a perspective view as in Fig. 1, but from another
• FIG. 3 shows a longitudinal section of an intake system in the region of the suction pipe section.
• an intake system 1 which is only partially shown, and which serves to supply fresh air to an internal combustion engine (not shown), which can be arranged in particular in a motor vehicle, comprises a suction pipe section 2 and at least one upstream component 3 as well as at least one downstream component 4.
• a fresh air path 5 indicated by arrows.
• a flow direction 6 of the fresh air flow 5 following fresh air flow is indicated by an arrow.
• the upstream component 3 is arranged upstream of the suction pipe section 2 with respect to the flow direction 6, while the downstream component 4 is arranged downstream of the suction pipe section 2 with respect to the flow direction 6.
• a blow-by-gas path 7, which is also indicated by arrows.
• the suction pipe section 2 comprises a pipe body 8, an air mass meter 9 and a bypass channel 10.
• the pipe body 8 has an inlet opening 11 and an outlet opening 12 and comprises a fresh air path section 13 which is indicated by arrows in FIG and from the inlet port 1 1 to the outlet opening 12 leads.
• the fresh air path section 13 of the tubular body 8 is divided into the fresh air path 5 of the intake system 1.
• the air mass meter 9, which may preferably be a H designedfilmmesser is attached to the tubular body 8 and projects into the fresh air path section 13 inside.
• the bypass channel 10 is arranged on the tubular body 8 and bypasses the fresh air path section 13. Furthermore, the bypass channel 10 can be connected to the blow-by gas path 7 on the inlet side. In the mounted state, the bypass channel 10 leads to an end section 14 of the blow-by-gas path 7. In that regard, the blow-by-gas path 7 and said blow-by-gas path end section 14 coincide in the bypass channel 10.
• the bypass channel 10 is arranged on the outside of the tube body 8, while inside the tube body 8 the fresh air path section 13 runs or is guided. Particularly advantageous is the embodiment shown here, in which the bypass channel 10 is integrally formed on the tubular body 8.
• the tubular body 8 and the bypass channel 10 are made of plastic and designed as an injection molded part.
• the bypass channel 10 has an inlet section 15 which, for example, has a circular cross-section, and an outlet portion 16 which may have a different cross section from the inlet portion 15.
• the flow cross section of the outlet section 16 is substantially rectangular, this "rectangular shape" being slightly curved, which can be seen in Figures 1 and 2.
• a transition section 17 connects the inlet section 15 to the outlet section 16 and guides the inlet cross section, in particular continuously,
• the outlet section 16 is integral with the suction tube section 2.
• the outlet section 16 may also be designed as a separate component and plugged, welded or screwed onto the inlet section 15.
• the outlet section 16 can be made longer and / or bent, and in the region of the inlet section 15, a gap 18 can be provided between the bypass channel 10 and the tube body 8 be.
• the tubular body 8 with its inlet opening 11 is connected to an outlet 19 of the upstream component 3, while it is connected with its outlet opening 12 to an inlet 20 of the downstream component 4.
• the bypass duct 10 according to FIG. 3 opens on the outlet side, that is to say here with its outlet section 16, into the downstream component 4.
• an outlet opening 21 of the bypass channel 10 opens into the downstream component 4 a. Accordingly, recirculated blow-by gas can enter the fresh air flow of the intake system 1 there. As a result, it comes in an area 22 to an admixture of blow-by gas to the fresh air.
• this admixing point 22 is downstream of the air mass meter 9, whereby contamination of the air mass meter 9 can be avoided by recycled blow-by gas.
• Particularly useful is the embodiment shown here, in which the bypass channel 10 protrudes on the outlet side in the flow direction 6 of the fresh air flow via the outlet opening 12 of the tubular body 8.
• the outlet section 16 projects significantly beyond the outlet end of the tubular body 8.
• the bypass channel 10 protrudes by at least 30%, in this case by about 50%, of the axial length of the tubular body 8 downstream of the tubular body 8. This measure significantly reduces the risk of backflow from blow-by gas to the air mass meter 9.
• the tubular body 8 is expediently equipped with an outlet-side outlet port 23, via which it can be connected to the downstream component 4.
• this outlet connection 23 encloses or surrounds the outlet opening 12 of the tubular body 8 and the outlet section 16 of the bypass channel 10.
• the outlet connection 23 can have an inner skin 24 laterally delimiting the outlet opening 12, which has a round inner cross section
• the outlet connection 23 has an outer skin 25 surrounding the inner skin 24 and the bypass duct 10 or the outlet section 16 of the bypass duct 10, which has a round outer cross section.
• the outer cross section is greater than the inner cross section, such that the bypass channel 10 between the inner skin 24 and the outer skin 25 can be arranged.
• Inner skin 24 and outer skin 25 are arranged eccentrically with respect to their cross sections, such that they are maximally spaced apart in the region of the bypass channel 10, while they have their smallest distance to each other diametrically opposite. This results in the region of the bypass channel 10, a gap 26 between the inner skin 24 and the outer skin 25, in which the bypass channel 10 is inserted or fitted.
• a sleeve-shaped section 27 of the outflow-side component 4 can be pushed onto the outlet connection 23 on the outside be, so be pushed outside on the outer skin 25.
• This compound can be fixed for example by means of a clamp.
• the outlet port 23 outside, so on the outer skin 25 is provided with an annular circumferential outer groove 28, in which a seal is used.
• the inner cross section is preferably circular, while the outer cross section is preferably elliptical or oval, or vice versa.
• the bypass channel 10 can be equipped on the inlet side, that is to say at its inlet section 15, with a connecting piece 29. With this connection piece 29 of the bypass channel 10 can be connected to an outlet 30 of a blow-by-gas line 31.
• This blow-by-gas line 31 leads the blow-by-gas path 7 to the bypass channel 10.
• This outlet 30 or a section 30 of the blow-by-gas line 31 having the outlet 30 can according to the in FIG. 3 embodiment may be arranged on the upstream component 3. In this case, this outlet 30 or the section of the blow-by gas line 31 having the outlet 30 can be integrally formed in particular on the upstream component 3.
• the blow-by-gas line 31 is formed by a channel which is bounded on a fresh air path 5 side facing by a wall portion 32 of an air filter housing 33 and the air path on a side facing away from the fresh 5 by a Wall portion 34 of a cylinder head cover 35 is limited.
• the air filter housing 33 and the cylinder head cover 35 in this case together form the inflow-side component 3, to which the suction pipe section 2 is connected.
• This integral construction it is particularly easy to provide a common interface for the fresh air path 5 on the one hand and the blow-by gas path 7 on the other.
• the suction pipe section 2 can simply be attached axially with its inlet end to the upstream component 3, wherein the closing nozzle 29 penetrates into the configured as a channel blow-by-gas line 31, while an inlet flange 36 of the tubular body 8 is frontally connected to the upstream component 3 and to the air filter housing 33.
• This inlet flange 36 encloses the inlet opening 19 and may be equipped, for example, with an axial seal 37, which is inserted into an axial groove 38 annularly enclosing the inlet opening 11. In this way, an axial seal is realized at the inlet flange 36.
• a radial seal can be realized by an annular seal 39 is inserted into an outer annular groove 40 which is externally attached to the connecting piece 29.
• a hose can be shot onto the connecting piece 29, which then forms part of the blow-by-gas line 31.
• an oil separator (not shown), whose blow-by-gas outlet then forms the outlet 30, to which the bypass channel 10 can be connected.
• Such an oil separator can be integrated, for example, in the upstream component 3 and in particular in the air filter housing 33.
• the inlet opening 1 1 of the tubular body 8 and an inlet opening 41 of the bypass channel 10 have the same orientation, that is, the planes in which the inlet opening 1 1 on the one hand and the inlet opening 41 are on the other hand, extend parallel to each other. Also, the flow directions of fresh air on the one hand and blow-by gas on the other hand in these openings 1 1, 41 extend substantially parallel to each other. Nevertheless, the inlet opening 1 1 and the inlet opening 41 structurally separated or spaced from each other on the tubular body 8 are formed. In this way, a separate connection of the tubular body 8 or of the suction tube section 2 on the one hand to the fresh air path 5 and on the other hand to the blowby gas path 7 is simplified.
• the air mass meter 9 has a housing 42 which can be glued or welded to the tubular body 9. In this way, a sufficient seal between the housing 42 and the tubular body 8 can be ensured.
• the housing 42 and the tubular body 8 are each made of plastic, whereby it is particularly easy to weld the housing 42 to the tubular body 8.
• the air mass meter 9 also has a port 43, via which the air mass meter 9 can be connected to a controller or the like.
• the suction pipe section 2 forms a preassembled unit which can be produced separately from the rest of the intake system 1 and can be installed in it particularly easily. Particularly useful is the ability to calibrate the air mass meter 9, if it is already installed in the pipe section 8, while the suction pipe section 2 itself is not yet installed in the intake system 1. In this way, the Saugrohrabites 2 can be installed with calibrated air mass meter 9 in the intake system 1. This leads to a considerable simplification in the assembly of the intake system. 1

Landscapes

• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Fluid Mechanics (AREA)
• General Physics & Mathematics (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
• Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=43540728

Family Applications (1)

Country Status (7)

Families Citing this family (10)

Citations (4)

Family Cites Families (24)

• 2009
  • 2009-11-17 DE DE102009053433A patent/DE102009053433A1/de not_active Withdrawn
• 2010
  • 2010-11-15 WO PCT/EP2010/067484 patent/WO2011061148A1/de not_active Ceased
  • 2010-11-15 BR BR112012011831A patent/BR112012011831A2/pt not_active Application Discontinuation
  • 2010-11-15 CN CN201080052008.2A patent/CN102713229B/zh not_active Expired - Fee Related
  • 2010-11-15 US US13/510,238 patent/US8991352B2/en not_active Expired - Fee Related
  • 2010-11-15 EP EP10779779.7A patent/EP2501922B1/de not_active Not-in-force
  • 2010-11-15 JP JP2012539288A patent/JP5675835B2/ja not_active Expired - Fee Related

Patent Citations (4)

Also Published As

Similar Documents

Legal Events