EP3198133A1 - Saugrohr für eine brennkraftmaschine - Google Patents
Saugrohr für eine brennkraftmaschineInfo
- Publication number
- EP3198133A1 EP3198133A1 EP15767113.2A EP15767113A EP3198133A1 EP 3198133 A1 EP3198133 A1 EP 3198133A1 EP 15767113 A EP15767113 A EP 15767113A EP 3198133 A1 EP3198133 A1 EP 3198133A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- suction tube
- combustion engine
- internal combustion
- fuel
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 26
- 239000000446 fuel Substances 0.000 claims abstract description 56
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 239000004033 plastic Substances 0.000 claims description 2
- 239000012815 thermoplastic material Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 230000003313 weakening effect Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
- F02M61/145—Arrangements of injectors with respect to engines; Mounting of injectors the injection nozzle opening into the air intake conduit
-
- 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
- F02M35/10216—Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
-
- 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
- F02M35/16—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines characterised by use in vehicles
- F02M35/161—Arrangement of the air intake system in the engine compartment, e.g. with respect to the bonnet or the vehicle front face
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/18—Fuel-injection apparatus having means for maintaining safety not otherwise provided for
- F02M2200/185—Fuel-injection apparatus having means for maintaining safety not otherwise provided for means for improving crash safety
Definitions
- the invention relates to a suction pipe for an internal combustion engine with the features of the preamble of claim 1.
- An intake system with a suction pipe plays an important role in a motor vehicle.
- the intake manifold often serves to accommodate individual components of a fuel system.
- the fuel rail supplies fuel to the injectors, even in an accident situation.
- An essential requirement is the tightness of the fuel system under all operating conditions of the internal combustion engine.
- gaskets for example, gaskets, used, the injectors are often pressed with a spring to the cylinder head.
- An intake manifold for an internal combustion engine of a motor vehicle is known from EP 0 732 495 B1, in which the intake manifold has a predetermined breaking region that extends substantially parallel to a longitudinal direction of the intake manifold. This leads to an improved crash behavior of the intake manifold. In the event of a crash, the intake manifold breaks along the breakaway region of the longitudinal axis to absorb energy from the crash. At its connection end, the intake manifold can therefore maintain its normal cross-section, so that the connecting parts are protected.
- a protective device for a fuel rail is known, which is arranged below a suction pipe and attached to the fuel rail and in the event of a crash plastically deforming around the fuel bar sets around the fuel line from damage by the deforming intake manifold to protect.
- the intake manifold absorbs part of the impact energy and the fuel line remains undamaged, preventing fuel leakage.
- DE 10 2004 061 505 A1 already discloses an internal combustion engine for a motor vehicle with a cylinder head, an intake manifold and a fuel rail.
- a guard which extends at least over the entire width of the flange and is arranged such that, seen in the direction of the crash force, the guard is spaced from the fuel rail.
- the suction pipe additionally has a portion of the intake manifold with a predetermined breaking point as a breaking line in the form of reduced wall thickness at which breaks in the case of a crash of the intake manifold. In this way, a region of the suction tube is created between the guard and the flange, which is secured against deformation in the event of a crash.
- this break is correspondingly spaced from the fuel rail so that any fragments of the intake manifold far from the fuel rail and thus can not damage them and in particular no fuel leaks. Also, a break in the region of the flange is prevented by the guard, so that thereby no damage to the fuel rail can occur. Likewise, the seat of the injection valves formed below the fuel rail is not destroyed, since a deformation-free area is maintained between the guard and the flange.
- the aforementioned devices have the common disadvantage that their effectiveness is substantially dependent on the direction of the acting deformation force.
- a protective bar has only a low effectiveness in a different direction of the force.
- a change in the installation situation for example, the use of the internal combustion engine in another motor vehicle, leads to completely different conditions, so that in principle a change of the protective bracket is required.
- DE 10 2004 037 1 17 A1 still discloses a holder of an injection valve of an internal combustion engine, wherein the holder securely holds the injection valve in consideration of relatively high injection and combustion pressures.
- the injection valve is fixed in the circumferential direction by means of a fixing device and forms a rigid assembly with the fuel rail, which is connected by the intermediary of at least one fastening screw with the cylinder head.
- the injection valve extends with a first valve portion in a first receiving bore of the fuel rail and a second valve portion in a second receiving bore of the cylinder head, wherein the fuel rail is supported on the cylinder head.
- A1 discloses an internal combustion engine for a motor vehicle with a cylinder head and a suction pipe is known, which is connected to a second valve portion of the fuel injection valve receiving flange. Furthermore, the internal combustion engine a fuel rail which is equipped with a receptacle for a first valve portion of a fuel injection valve. Through the inlet channel, a fuel-air mixture is conveyed into the combustion chamber. The flange is coaxially enclosed by the receptacle, so that together they form a dimensionally stable and loadable unit. In a mouth region of the flange in the suction pipe, the flange and the suction pipe have a constricted portion designed as an annular groove with a reduced wall thickness.
- the flange is separated from the intake manifold in a predetermined manner, the connection between the receptacle and the flange, however, in no way impaired, so that no fuel can escape from the pressurized fuel rail in the event of a crash.
- the weakening is provided in the region of the suction tube.
- the object of the invention is to reliably and effectively prevent the escape of fuel with simple means in the event of an accident-related deformation.
- this should be dispensed with additional protective devices, such as deformation elements, for receiving the acting deformation forces.
- an intake manifold for an internal combustion engine suitable for detachable connection to a fuel rail comprising a flange receiving a valve portion of the fuel injection valve, the flange having an upper portion facing the injection valve and a lower portion facing the intake manifold.
- the flange In the upper region of the flange there is an element with a section, the section having a reduced strength at least partially with respect to its respective adjacent regions.
- the deliberately reduced strength in the element of the flange means that when a maximum force is reached, not the connection between the receptacle and the flange is released, but rather the flange is separated from the suction tube, specifically in the region where the element diminished it Has strength.
- the invention is thus based on the finding that not a material reinforcement of the fuel-carrying elements leads to an increase in passive safety, but on the contrary a material weakening by a disruption of the wiring specifically in a non-critical, from the fuel pressure of the fuel rail not acted upon area occurs .
- the term intake manifold is to be comprehensively hen and not limited to a non-supercharged internal combustion engine.
- guards and the like in any way.
- the solution described can be implemented cost and space neutral. It does not pursue the strategy to prevent the action of forces on the fuel-carrying components, but to allow the release of the component from its attachment already at low fuel level without damage.
- the weakening in the element of the upper flange portion of the suction tube does not cause any acoustic disadvantages, in contrast to the prior art, where the weakening is provided in the region of the air channel.
- Another advantage is the reduced vibration load. The fact that the connection between the fuel rail and intake manifold through the sleeve is not so rigid, vibrations of the fuel rail do not affect directly on the constriction of serious, which can not lead to vibration breakage during operation.
- the element with the flange can be detachably connected and / or releasably connected.
- the element can be designed independently of the flange, manufactured and then connected to the flange.
- the element may be part of the flange and fabricated together with the flange.
- it can be a pipe socket.
- the element can be designed cup-shaped.
- the shape of the element has a shape of a cup or a cup.
- cups and cups are made in different shapes.
- the cups are cylindrically, conically or straight up, formed with the diameter larger than a height. They have a curvature. Inwardly, they are concave and convexly curved outward.
- the straight upwardly extending shape of the cup can be used, whose diameter is substantially greater than the height thereof.
- a convex-concave curvature of the mold is particularly advantageous for the mold according to the invention.
- An advantageous embodiment of the present invention is also achieved when the element has at least one notch.
- the notch can be configured axially and / or radially.
- the area of reduced strength is marked particularly clearly and the separation of the areas is controlled in the designated area.
- the portion of the element is formed by a reduced wall thickness.
- the reduced strength can be achieved for example by a targeted change in the material properties, for example by irradiation with electromagnetic radiation, or by the use of partially dissimilar materials.
- the section is formed by a reduced wall thickness, so as to achieve the desired increase in passive safety with a comparatively low effort and without significant structural changes compared to known fuel feeds.
- a correspondingly reduced wall thickness can already be generated during the shaping or a near-surface layer can be removed in a separate operation.
- a near-surface layer can be removed in a separate operation.
- arranged in series recesses which can be brought about, for example, by a chemical reaction.
- Another, also particularly useful embodiment of the present invention is achieved in that the section is executed partially differently depending on an expected direction of an accidental force, so as to be able to take into account in particular the installation situation of the internal combustion engine in the front of the motor vehicle.
- the section of the element may consist of a material which leads to a brittle fracture.
- a modification has already proven to be particularly promising, in which the section consists of a plastic, in particular of a thermoplastic material.
- Another, also particularly simple embodiment of the present invention is achieved even if the element is formed by a reduced-strength portion as a separate component.
- the suction tube which on the one hand carries the flange and on the other hand represents the connection to the inlet channel.
- the realization of the invention is further simplified in this way. It is particularly practical when the invention in an internal combustion engine for a motor vehicle with a cylinder head, a suction pipe according to the invention, which is connected to an intake port in the cylinder head of the internal combustion engine, and a fuel rail which is equipped with a receptacle for a first valve portion of a fuel injection valve, is installed.
- the MPI engines can benefit from the solution according to the invention, in which a multi-point injection is provided in which an injection valve is located close to the inlet valve for each cylinder. During cold start, this can not precipitate so much fuel in the intake manifold.
- Fig. 1 is a schematic representation of an embodiment of erfindungsmä.
- Fig. 2 shows an embodiment of the cup-shaped element according to the invention
- Fig. 3 shows a motor vehicle with an internal combustion engine and with the invention
- the suction pipe 1 shows a suction pipe 1 shown only in sections and a fuel rail 2 of an internal combustion engine 6 not shown.
- the suction pipe 1 is provided with a flange 3 inclined to the flow direction, which sealingly receives a fuel injection valve, not shown.
- an element 4 which is cup-shaped.
- the shape of the element is characterized by a straight upwardly extending shape whose diameter is substantially greater than its height.
- the element 4 has a portion 5 which has a reduced strength at least partially with respect to their respective adjacent regions. The reduced strength is caused by a portion 5 having a notch, which forms a predetermined breaking point 5. This leads to the fact that the flange 3 is separated from the suction pipe 1 at a high external force.
- FIG. 2 schematically shows an embodiment of the element 4 according to the invention.
- the section 5 in the form of a notch is configured axially (around the element 4) and radially (in the height of the element 4).
- the section 5 of reduced strength is marked particularly clearly and the separation of the areas controlled in this notch 5 run off.
- the element 4 forms part of the flange 3 in the illustrated embodiment.
- FIG. 3 an embodiment of the motor vehicle 8 according to the invention is partially shown schematically, wherein the motor vehicle, which is cut in the front region, is shown.
- the motor vehicle which is cut in the front region
- the intake manifold 1 In the front region of the motor vehicle 8 there are an internal combustion engine 6 and the intake manifold 1 according to the invention.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014219036.3A DE102014219036A1 (de) | 2014-09-22 | 2014-09-22 | Saugrohr für eine Brennkraftmaschine |
| PCT/EP2015/070646 WO2016045972A1 (de) | 2014-09-22 | 2015-09-09 | Saugrohr für eine brennkraftmaschine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3198133A1 true EP3198133A1 (de) | 2017-08-02 |
| EP3198133B1 EP3198133B1 (de) | 2020-01-08 |
Family
ID=54151257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15767113.2A Active EP3198133B1 (de) | 2014-09-22 | 2015-09-09 | Saugrohr für eine brennkraftmaschine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3198133B1 (de) |
| CN (1) | CN107076066B (de) |
| DE (1) | DE102014219036A1 (de) |
| WO (1) | WO2016045972A1 (de) |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2242824C3 (de) * | 1972-08-31 | 1975-05-15 | Dr.-Ing.H.C. F. Porsche Ag, 7000 Stuttgart | Brennstoffeinspritzdüsenbefestigung |
| DE2653674A1 (de) * | 1976-11-26 | 1978-06-01 | Bosch Gmbh Robert | Einspritzventil fuer eine brennkraftmaschine |
| US4727843A (en) * | 1982-09-29 | 1988-03-01 | General Motors Corporation | Mounting retainer for electromagnetic fuel injector |
| DE3406487A1 (de) * | 1984-02-23 | 1985-08-29 | Bayerische Motoren Werke AG, 8000 München | Einspritzventil fuer gemischverdichtende brennkraftmaschinen, insbesondere fuer einzelsaugrohr-einspritzung |
| JP2699915B2 (ja) * | 1995-03-13 | 1998-01-19 | トヨタ自動車株式会社 | 吸気マニホールド |
| SE9900049D0 (sv) * | 1999-01-12 | 1999-01-12 | Volvo Ab | Anordning vid förbränningsmotorer |
| JP3812403B2 (ja) | 2001-10-19 | 2006-08-23 | 日産自動車株式会社 | 内燃機関の吸気装置 |
| US7007674B2 (en) * | 2003-04-01 | 2006-03-07 | Robert Bosch Corporation | Fuel rail assembly |
| DE102004037117B4 (de) | 2004-07-30 | 2013-05-29 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Einspritzventil sowie ein Verfahren zur Befestigung dieses Einspritzventils an einer Brennkraftmaschine |
| DE102004061505B4 (de) | 2004-12-21 | 2021-08-26 | Volkswagen Ag | Brennkraftmaschine für ein Kraftfahrzeug |
| DE102009015061A1 (de) | 2009-03-26 | 2010-09-30 | Volkswagen Ag | Brennkraftmaschine für ein Kraftfahrzeug und Anordnung einer Kraftstoffverteilerleiste |
| CN203488301U (zh) * | 2013-09-06 | 2014-03-19 | 胡永军 | 汽车燃料喷射器的固定装置 |
-
2014
- 2014-09-22 DE DE102014219036.3A patent/DE102014219036A1/de not_active Withdrawn
-
2015
- 2015-09-09 WO PCT/EP2015/070646 patent/WO2016045972A1/de not_active Ceased
- 2015-09-09 CN CN201580050892.9A patent/CN107076066B/zh not_active Expired - Fee Related
- 2015-09-09 EP EP15767113.2A patent/EP3198133B1/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107076066B (zh) | 2019-10-01 |
| DE102014219036A1 (de) | 2016-04-07 |
| EP3198133B1 (de) | 2020-01-08 |
| CN107076066A (zh) | 2017-08-18 |
| WO2016045972A1 (de) | 2016-03-31 |
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