EP3027882B1 - Brennstoffverteiler und brennstoffeinspritzsystem - Google Patents

Brennstoffverteiler und brennstoffeinspritzsystem Download PDF

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Publication number
EP3027882B1
EP3027882B1 EP14734757.9A EP14734757A EP3027882B1 EP 3027882 B1 EP3027882 B1 EP 3027882B1 EP 14734757 A EP14734757 A EP 14734757A EP 3027882 B1 EP3027882 B1 EP 3027882B1
Authority
EP
European Patent Office
Prior art keywords
fuel
sensor
distributor
main body
fuel injection
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.)
Active
Application number
EP14734757.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3027882A1 (de
Inventor
Martin RIEGEL
Jan Kafka
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3027882A1 publication Critical patent/EP3027882A1/de
Application granted granted Critical
Publication of EP3027882B1 publication Critical patent/EP3027882B1/de
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Anticipated expiration legal-status Critical

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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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
    • F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
    • F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
    • F02M21/0245—High pressure fuel supply systems; Rails; Pumps; Arrangement of valves
    • 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
    • F02M2200/24—Fuel-injection apparatus with sensors

Definitions

  • the invention relates to a fuel distributor, which serves to distribute fuel to a plurality of fuel injection valves, and a fuel injection system having such a fuel distributor and a plurality of fuel injection valves.
  • the invention relates to the field of fuel injection systems that are used for injection, in particular for port injection, of natural gas in internal combustion engines.
  • the known injector assembly includes a fuel rail, an anvil, and injectors.
  • the fuel rail is used to distribute compressed natural gas to the injectors.
  • a sensor is mounted to the fuel rail, which serves for example for measuring the pressure and the temperature of the natural gas in the fuel rail.
  • the from the DE 10 2010 064 115 A1 known injector arrangement has the disadvantage that the production of the fuel rail, which is formed of aluminum or a stainless steel, especially for larger production volume is uneconomical to manufacture. Further, a sensor and a connection element must be mounted on the fuel rail to connect the sensor on the one hand with the fuel rail and on the other hand with a control device. This requires additional work steps in the production. In addition, the sealing point between the sensor and the fuel rail must be reliably formed, over the life of which there is a risk that the sealing point will leak.
  • the fuel distributor according to the invention with the features of claim 1 and the fuel injection system according to the invention with the features of claim 8 have the advantage that an improved design is possible.
  • economical production of the fuel distributor and of the fuel injection system is possible, at the same time enabling simple production or assembly as well as improved sealing in the region of the sensor.
  • the measures listed in the dependent claims advantageous developments of the fuel distributor specified in claim 1 are possible.
  • the fuel injectors are not part of the fuel distributor.
  • the fuel distributor can also be manufactured and distributed independently of the fuel injection valves.
  • the fuel distributor and the sensor are separate components, which are connected to one another, for example, during a pre-assembly.
  • the sensor and the sensor connection can also be realized by separate components.
  • the senor is part of the fuel distributor. Furthermore, the sensor connection of the sensor is also part of the fuel distributor. Because the sensor connection of the sensor is integrated in the body of the fuel distributor. Depending on the configuration, the entire sensor may be located in the base body. However, the sensor can also protrude at least partially into the fuel space of the main body. Then at least the sensor connection of the sensor is integrated into the main body. It is advantageous that the main body has a manifold which is formed of a plastic. The fuel space is then preferably configured within the manifold. Thus, the fuel can be routed through the manifold and split among the various fuel injectors. If necessary, the fuel space can also serve as a fuel storage. Specifically, the fuel can be introduced as compressed natural gas in the fuel space. While the compressed natural gas is then introduced into the fuel space, the fuel space in the manifold due to its storage function can ensure that the short-term removal of natural gas, the required pressure is ensured.
  • the fuel distributor thus serves advantageously for distributing natural gas to the fuel injection valves.
  • the internal combustion engine can be designed in particular as a diesel or gasoline engine.
  • the natural gas is stored here preferably as compressed natural gas in a gas storage, for example at pressures of about 20 MPa (200 bar). Such a compressed natural gas is also called CNG.
  • CNG compressed natural gas
  • the concept of natural gas is not limited to natural gas but is generally understood.
  • the natural gas can also be obtained artificially by coal gasification. Therefore, the term natural gas and natural gas-like fuels to understand.
  • the main body can thus be at least partially formed of a plastic.
  • the base body may also be formed at least partially from a plastic extrusion.
  • the integration of the sensor in the body can be done by the plastic extrusion.
  • the sensor can be designed as a functional module, which is thereby advantageously integrated into the fuel distributor.
  • the outputs via which the fuel from the fuel chamber to the fuel valves can be performed, are integrated into the main body.
  • the outputs may be formed by cups, to which the fuel injection valves can be fastened, the cups being integrated into the basic body.
  • inlet ports of the fuel injectors can then be inserted into the cups.
  • the fastening of the fuel injection valves can take place, for example, via fastening means configured as clamps.
  • Such fastening means are preferably attached to the cups, wherein the fastening means then fix the inlet nozzle of the respective fuel injection valve to the cup.
  • the fuel injection system can be made of a small number of components and assembled in a simple manner.
  • the cups may be advantageously formed from a plastic.
  • the cups can also be integrated in an advantageous manner in the body.
  • the base body can be advantageously stabilized by a plurality of stiffening ribs.
  • the use of materials can be reduced and the production costs are reduced.
  • the sensor can be configured advantageously both as a pressure sensor and as a temperature sensor.
  • a further sensor is provided with a sensor connection, wherein at least the sensor connection of the further sensor is integrated into the base body.
  • more than two sensors are more than two sensors, if this makes sense in the respective application.
  • only one sensor connection is provided, as this reduces the space required and the assembly is simplified.
  • Fig. 1 shows a fuel injection system 1 with a fuel distributor 2 and a plurality of fuel injection valves 3, 4 in a three-dimensional representation according to an embodiment of the invention.
  • the fuel distributor 2 is particularly suitable for distributing natural gas, in particular CNG, to the fuel injection valves 3, 4.
  • the fuel distributor 2 can also be used to distribute other fuels.
  • the fuel injection system 1 is particularly suitable for the intake manifold injection of natural gas in internal combustion engines.
  • the fuel injection system 1 of the invention is also suitable for other applications.
  • the fuel distributor 2 has a main body 5 with a distributor pipe 6. Furthermore, a sensor 7 with a sensor connection 8 is provided. At least the sensor connection 8 of the sensor 7 is integrated in the main body 5. As a result, the sensor connection 8 is connected to the distributor tube 6. In this case, the sensor connection 8 is preferably configured in one piece with the distributor tube 6.
  • the main body can be formed for this purpose in particular from a plastic. In the embodiment of the main body 5, however, different plastics can be used.
  • the main body 5 with the distributor tube 6 and the sensor connection 8 can be formed at least partially from a plastic extrusion coating. As a result, the sensor connection 8 can be integrated into the main body 5 by the plastic extrusion coating.
  • the interior space 9 serves as a fuel space 9.
  • a fuel line can be connected to a connection 10 of the main body 5 in order to introduce compressed natural gas or other fuels into the fuel space 9.
  • the fuel distributor 2 also has outputs 11, 12.
  • the outputs 11, 12 are formed by cups 11, 12, to which the fuel injection valves 3, 4 are attached.
  • inlet stubs 13, 14 of the fuel injection valves 3, 4 are inserted into the cups 11, 12 at least in sections.
  • fasteners 15, 16 configured as brackets 15, 16, the respective fuel injection valve 3, 4 is then connected to the cup 11, 12 at its inlet connection 13, 14.
  • the fuel injection valves 3, 4 are then fixed to the cups 11, 12 of the fuel distributor 2.
  • the cups 11, 12 are formed of a plastic.
  • the cups 11, 12 are integrated into the main body 5.
  • the cups 11, 12 may be formed together with the manifold 6 of a molded plastic.
  • the outputs 11, 12 can be integrated into the main body 5 in an advantageous manner.
  • the outputs 11, 12 can also be designed modified.
  • fuel in particular natural gas
  • the sensor 7 is preferably designed as a pressure and temperature sensor 7.
  • a signal and / or power line can be connected to the sensor connection 8 in order to transmit at least one measurement signal and if necessary to supply the sensor 7 with energy.
  • the manifold 6 extends along a longitudinal axis 20.
  • the main body 5 in this embodiment on the manifold 6 a plurality of stiffening ribs 21, 22, 23.
  • stiffening ribs 21, 22, 23 are marked here.
  • a part of the stiffening ribs 21, 22 extends in a circumferential direction with respect to the longitudinal axis 20.
  • Another part of the stiffening ribs 23 extends parallel to the longitudinal axis 20.
  • the fuel distributor 2 and the fuel injection system 1 can be made in a compact construction.
  • the required work steps can be reduced.
  • a cost reduction is possible.
  • the risk of leaking sealing points between the manifold 6 and the sensor port 8 and the manifold 6 and the cups 11, 12 avoided from the outset, since such sealing points due to the integration of the sensor terminal 8 in the main body 5 and the cups 11, 12 in the Base 5 omitted.
  • the fuel injection system 1 may also have more than two fuel injection valves 3, 4.
  • the number of outputs 11, 12, in particular cups 11, 12, can be adapted to the particular application.
  • an extension of the distributor tube 6 along the longitudinal axis 20 can be predetermined accordingly.
  • a suitable embodiment of the fuel distributor 2 and of the fuel injection system 1 can be selected.
  • the fuel injection system 1 and the fuel distributor 2 have the advantage that a compact design is made possible. Because of the integration of the sensor terminal 8 in the main body 5 related separate connectors are saved, with a space-saving design is possible. Accordingly, the space requirement in the area of the outlets 11, 12 or the cups 11, 12 of the distributor tube 6 can be reduced. In particular, mechanical connection points between the cups 11, 12 and the distributor tube 6, in particular screw thread, can be omitted here. This also approaches or the like can be omitted, which are otherwise required for the mechanical stability of such screw thread or other mechanical connection points.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP14734757.9A 2013-07-31 2014-06-13 Brennstoffverteiler und brennstoffeinspritzsystem Active EP3027882B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013214965.4A DE102013214965A1 (de) 2013-07-31 2013-07-31 Brennstoffverteiler und Brennstoffeinspritzsystem
PCT/EP2014/062357 WO2015014526A1 (de) 2013-07-31 2014-06-13 Brennstoffverteiler und brennstoffeinspritzsystem

Publications (2)

Publication Number Publication Date
EP3027882A1 EP3027882A1 (de) 2016-06-08
EP3027882B1 true EP3027882B1 (de) 2018-01-10

Family

ID=51062782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14734757.9A Active EP3027882B1 (de) 2013-07-31 2014-06-13 Brennstoffverteiler und brennstoffeinspritzsystem

Country Status (5)

Country Link
EP (1) EP3027882B1 (zh)
CN (1) CN105556109B (zh)
BR (1) BR112016001752A2 (zh)
DE (1) DE102013214965A1 (zh)
WO (1) WO2015014526A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108930612A (zh) * 2017-05-27 2018-12-04 罗伯特·博世有限公司 燃料喷射装置以及燃料加热方法

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010064115A1 (de) * 2010-12-23 2012-06-28 Robert Bosch Gmbh Injektoranordnung, die vorzugsweise für Erdgas dient

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19746563A1 (de) * 1997-10-22 1999-04-29 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen
US6247450B1 (en) * 1999-12-27 2001-06-19 Detroit Diesel Corporation Electronic controlled diesel fuel injection system
DE10058130A1 (de) * 2000-11-22 2002-05-23 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen
JP4134681B2 (ja) * 2002-10-31 2008-08-20 日産自動車株式会社 内燃機関の高圧燃料配管
ITBO20040114A1 (it) * 2004-02-27 2004-05-27 Magneti Marelli Powertrain Spa Collettore carburante bi-materiale per un motore a combustione interna con iniezione diretta del carburante e metodo per la sua realizzazione
JP4695042B2 (ja) * 2006-08-10 2011-06-08 株式会社ニッキ アドオン・ガス燃料噴射システム
DE102008040901A1 (de) * 2008-07-31 2010-02-04 Robert Bosch Gmbh Kraftstoffdruckspeicher für ein Einspritzsystem für Brennkraftmaschinen
DE102012001076A1 (de) * 2012-01-20 2013-07-25 Veritas Ag Verfahren zur Erhöhung einer Dauerfestigkeit eines Hohlkörpers und dazugehörigen Hohlkörper

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010064115A1 (de) * 2010-12-23 2012-06-28 Robert Bosch Gmbh Injektoranordnung, die vorzugsweise für Erdgas dient

Also Published As

Publication number Publication date
CN105556109A (zh) 2016-05-04
CN105556109B (zh) 2018-10-02
WO2015014526A1 (de) 2015-02-05
EP3027882A1 (de) 2016-06-08
DE102013214965A1 (de) 2015-02-05
BR112016001752A2 (pt) 2017-08-01

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