WO2015014529A1 - Fuel injection system - Google Patents
Fuel injection system Download PDFInfo
- Publication number
- WO2015014529A1 WO2015014529A1 PCT/EP2014/062386 EP2014062386W WO2015014529A1 WO 2015014529 A1 WO2015014529 A1 WO 2015014529A1 EP 2014062386 W EP2014062386 W EP 2014062386W WO 2015014529 A1 WO2015014529 A1 WO 2015014529A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- injection
- fuel
- injection unit
- connecting means
- units
- Prior art date
Links
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
- 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
- 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
- F02M21/0248—Injectors
- F02M21/0281—Adapters, sockets or the like to mount injection valves onto engines; Fuel guiding passages between injectors and the air intake system or the combustion chamber
-
- 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
- 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
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- 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
- F02M21/0248—Injectors
- F02M21/0251—Details of actuators therefor
- F02M21/0254—Electric actuators, e.g. solenoid or piezoelectric
-
- 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
- F02M21/0296—Manufacturing or assembly; Materials, e.g. coatings
-
- 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
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Definitions
- the invention relates to a fuel injection system, in particular for
- Intake manifold injection of natural gas in internal combustion engines is used.
- the invention relates to the field of fuel injection systems having a plurality of injectors that inject into intake manifolds of a gasoline or diesel engine, wherein the natural gas is supplied in compressed form as CNG.
- an injector arrangement which preferably serves for natural gas.
- the known injector assembly has a fuel rail, which serves to distribute compressed natural gas to a plurality of injectors.
- Fuel manifold is mounted a connector to which, for example, via a piping, a fuel tank is connected.
- the fuel tank may serve for storing natural gas, in particular compressed natural gas (CNG).
- CNG compressed natural gas
- 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 fuel injection system according to the invention with the features of claim 1 has the advantage that an improved structure and in particular a greater flexibility are possible. Specifically, a simple adaptation to different applications can be realized by a modular design.
- the fuel injection system is preferably for distributing and injecting natural gas via the injection units.
- the fuel injection system can serve here for port injection of natural gas in internal combustion engines.
- Fuel injection system is also suitable for mixed operation in one
- the fuel injection system can be used in gasoline or diesel engines.
- the natural gas is preferably supplied to the fuel injection system as compressed natural gas.
- the natural gas may be compressed at a pressure of about 20 MPa (200 bar).
- Such a compressed natural gas is also called CNG.
- the concept of natural gas is not limited to natural gas but is generally understood.
- the natural gas can also be artificially
- the injectors are advantageously integrated in the injection units.
- the fuel may be guided through an internal space inside the injection unit. From this interior can then according to the injection processes required by the injection valve
- the fuel may also be conducted via a channel through the injection unit, wherein, for example via a tee, fuel is diverted from the channel between the inlet port and the outlet port for the injection valve of the injection unit.
- Injectors are integrated into the injection units and that the injection units are interconnected by the at least one connecting means.
- the required number of connecting means is used.
- each injection unit which has both an inlet port and an outlet port, a further injection unit can be connected via a connecting means.
- the injection units are successively connected to one another via the connection means, which connect two injection units in each case, and / or that an injection unit has only one input connection.
- a chain of injection units can be formed in which exactly one
- Injection unit namely the last injection unit in the chain, only one
- two such chains may be arranged parallel to each other on the internal combustion engine, which are supplied together or separately with fuel.
- At least one connecting means is designed as a flexible connecting means, which is bendable at least during assembly. This can be the
- Connecting means for example, from a suitably selected metal and with a suitable configuration, in particular wall thickness, be formed to allow during assembly by bending trimming. Bending can then preferably take place in a preparatory assembly step, wherein adaptation to the specific application is possible.
- the connecting means is designed as a flexible connecting means.
- the flexibility of the connecting means can be achieved by a geometric design and / or by a suitable choice of material.
- the connecting means may be formed in an advantageous manner as a tubular connecting means.
- Use case can be used in assembling the fuel injection system at different locations and different connecting means used.
- a flexible or flexible connection means is used only at a location where bending of the connection means is also required. This can possibly be saved material costs.
- Output terminal and the connecting means is enabled.
- a tolerance compensation with respect to the output terminal can be ensured.
- such a tolerance compensation may optionally be provided on individual or only on an injection unit, if this is sufficient and appropriate for the specific application.
- At least one injection unit has a sensor and that the sensor has a pressure and / or a temperature of the fuel in the
- Injection unit measures.
- a pressure and / or temperature sensor can be realized, which is integrated in the injection unit. This simplifies assembly, since the number of components to be assembled is reduced. Furthermore, this can have an advantageous effect on the required installation space, since a flexibility with respect to the arrangement of the sensor in a chain or series of successive injection units is made possible. It is also advantageous here that an electrical connection for the sensor is integrated in a housing of the injection unit which has the sensor.
- the injection unit has a housing into which an electrical connection for the associated connection valve is integrated. If the
- Injection unit is then attached to the internal combustion engine, then at the same time the electrical connection for the injection valve of the injection unit is fixed.
- the assembly of the electrical connection lines from a control unit to the injection units or the injection valves is then particularly simple.
- the input connection for the fuel and optionally the output connection for the fuel can also be integrated into the housing in an advantageous manner.
- the housing of an injection unit may be at least partially formed by a plastic extrusion. Further, it is possible that the housing is at least partially formed by plastic parts welded together. In particular, a reliable connection with metallic parts can be realized by plastic extrusion.
- Fig. 1 shows a fuel injection system and an internal combustion engine in a partial, spatial representation according to a possible embodiment of the invention.
- Fig. 2 is an injection unit of the fuel injection system shown in Fig. 1 according to a first embodiment of the invention;
- Fig. 3 is an injection unit of the fuel injection system shown in Fig. 1 according to a second embodiment of the invention
- Fig. 4 is an injection unit of the fuel injection system shown in Fig. 1 according to a third embodiment of the invention.
- Fig. 5 is an injection unit of the fuel injection system shown in Fig. 1 according to a fourth embodiment of the invention.
- Fig. 1 shows a fuel injection system 1 and an internal combustion engine 2 in a partial, spatial representation according to a possible embodiment of the
- the fuel injection system 1 is particularly suitable for
- Natural gas injection in suction pipes of the internal combustion engine 2 may be designed as a gasoline or diesel engine.
- the natural gas can in this case be supplied to the fuel injection system 1 in the form of CNG.
- the fuel injection system 1 of the invention is also suitable for other applications.
- the fuel injection system 1 has injection units 3 to 8. Possible
- the fuel injection system 1 also has connecting means 9 to 14.
- the connecting means 9 is connected only to the injection unit 3 and designed as an inlet. Further, the injection units 3 to 8 are connected to each other via the connecting means 10 to 14.
- clamps 15, 16. are for simplicity of illustration only the clamps 15, 16th characterized.
- the clamp 15 is used to attach the connecting means 10 to the injection unit 3.
- the clamp 16 serves to connect the connecting means 10 to the injection unit 4. Further, holders 17 to 22 are provided, which in the respective
- Injection unit 3 to 8 are integrated. Designed as screws 23
- Attachment means 23 the injection units 3 to 8 are attached via their holders 17 to 22 to the internal combustion engine 2. To simplify the illustration, in this case only the fastening means 23 is marked.
- the connecting means 10 to 14 connect the injection units 3 to 8 consecutively.
- the injection units 3 to 8 are arranged in a row.
- the connecting means 9 is formed as a flexible connecting means 9, which is bendable at least during assembly.
- the connecting means 9 can also be considered flexible
- Connecting means 9 may be formed.
- the connecting means 9 to 14 may also be configured uniformly. Specifically, the connecting means 9 to 14 as
- a tolerance compensation can be made possible, which also facilitates the assembly.
- the injection units can be 3 to 8 twisted slightly during attachment. The resulting angular misalignment between adjacent injection units 3 to 8 can then be compensated by the respectively intermediate connecting means 10 to 14.
- Connecting means 9 to 14 can thus be configured as connecting hoses 9 to 14 in an advantageous manner.
- FIG. 2 shows by way of example the injection unit 3 of the one shown in FIG.
- Fuel injection system 1 which is designed according to a first embodiment of one of the injection units 3 to 8.
- the injection unit 3 has a housing 25 into which the holder 17 is integrated. Furthermore, the injection unit 3 has a
- the input port 26 for the fuel and the output port 27 for the fuel are integrated into the housing 25.
- the housing 25 can thereby be at least partially formed by plastic parts 17, 26, 27 welded together, namely the holder 17, the input connection 26 and the output connection 27, if plastics are used in this respect.
- the housing 25 may also be formed at least partially by a plastic extrusion.
- the injection unit 3 has an injection valve 28 which is integrated into the injection unit 3.
- an electrical connection 29 is provided for the injection valve 28.
- the electrical connection 29 for the injection valve 28 is also integrated in the housing 25.
- the connecting means 9 is attached to the input terminal 26 and then fixed with a clamp. Accordingly, the connecting means 10 is attached during installation on the output terminal 27 and fixed by means of the clamp 15.
- the injection unit 3 has a sensor 30 with an electrical connection 31.
- the sensor 30 measures a pressure and a temperature of the fuel, which is located in the injection unit 3 and is passed through the injection unit 3 or to the injection valve 28.
- the electrical connection 31 for the sensor 30 is integrated in the housing 25 of the injection unit 3.
- the input terminal 26 and that attached to the input terminal 26 are identical.
- Connecting means 9 are designed so that a tolerance compensation between the input terminal 26 and the connecting means 9 is made possible.
- the output terminal 27 and the connection means 10 fastened to the output terminal 27 are designed so that a tolerance compensation between the
- Fig. 3 shows the injection unit 4 of the fuel injection system 1 shown in Fig. 1, which is configured according to a second embodiment of the injection units 3 to 8.
- the injection unit 4 comprises a housing 25A, an input port 26A for the fuel, and an output port 27A for the fuel. Further, an injection valve 28A is integrated in the injection unit 4. Further, an electric
- Fig. 4 shows the injection unit 8 of the fuel injection system 1 shown in Fig. 1, which is configured according to a third embodiment of the injection units 3 to 8.
- the injection unit 8 has only one input port 26B while the output terminal 27, as provided in the first embodiment described with reference to FIG. 2, is eliminated.
- the injection unit 8 has a sensor 30B with an electrical connection 31B for the sensor 30B.
- the electrical connection 31 B is in this case integrated into a housing 25 B of the injection unit 8.
- the injection unit 8 has an injection valve 28B and an electrical connection 29B for the injection valve 28B.
- Apart from the missing output terminal 27 corresponds to the configuration of the injection unit 8 according to the third embodiment of the described with reference to FIG. 2 embodiment of the injection unit 3 according to the first embodiment.
- FIG. 5 shows the injection unit 8 of the fuel injection system 1 shown in FIG. 1, which is designed according to a fourth exemplary embodiment of the injection units 3 to 8.
- the injection unit 8 has the input port 26B integrated with the housing 25B.
- Embodiment eliminates an output terminal 27, 27A. Further, in the
- no sensor 30B and therefore also no electrical connection 31B are provided for the sensor 30B.
- the fuel injection system 1 is preferably exactly one injection unit 3, 8 is used, which has a sensor 30 for pressure and temperature measurement.
- multiple injection units 3, 8 can be used with a sensor 30, 30B. This may be particularly advantageous when one of the sensors 30, 30B is used for pressure measurement, while the other sensor 30, 30B is used for temperature measurement.
- an injection unit 8 is preferably used as the end piece, which is formed according to the third embodiment or the fourth embodiment, which are described with reference to FIGS. 4 and 5.
- Embodiment can be used in a structure of the fuel injection system 1 as T variants with or without sensor 30.
- An injection unit 8 according to the third embodiment or the fourth embodiment may be an L variant with or without sensor 30B are used. Due to the available variants, namely the two T variants and the two L variants, a suitable combination can be selected with respect to the respective application in order to construct the fuel injection system 1 in a modular manner. This allows a big one
- Injection units 3 to 8 are used, which reduces the variant frame. Furthermore, the fuel injection system 1 can also be retrofitted hereby if necessary. As a result, a conversion to a natural gas operation is possible.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14731216.9A EP3027878A1 (en) | 2013-07-31 | 2014-06-13 | Fuel injection system |
CN201480043493.5A CN105431625A (en) | 2013-07-31 | 2014-06-13 | Fuel injection system |
BR112016001797A BR112016001797A2 (en) | 2013-07-31 | 2014-06-13 | fuel injection system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013214960.3 | 2013-07-31 | ||
DE201310214960 DE102013214960A1 (en) | 2013-07-31 | 2013-07-31 | fuel injection system |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015014529A1 true WO2015014529A1 (en) | 2015-02-05 |
Family
ID=50976621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2014/062386 WO2015014529A1 (en) | 2013-07-31 | 2014-06-13 | Fuel injection system |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP3027878A1 (en) |
CN (1) | CN105431625A (en) |
BR (1) | BR112016001797A2 (en) |
DE (1) | DE102013214960A1 (en) |
WO (1) | WO2015014529A1 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008004866A1 (en) * | 2006-07-03 | 2008-01-10 | Vialle Alternative Fuel Systems B.V. | Injector assembly |
US20080135020A1 (en) * | 2006-11-29 | 2008-06-12 | Hornby Michael J | Automotive modular LPG injector |
US7415968B1 (en) * | 2007-04-24 | 2008-08-26 | Lycoming Engines, A Division Of Avco Corporation | Modular fuel delivery assembly for an aircraft engine |
WO2014076367A1 (en) * | 2012-11-13 | 2014-05-22 | Wärtsilä Finland Oy | Gas feed system for reciprocating engine and installation method |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19860468A1 (en) * | 1998-12-28 | 2000-07-06 | Bosch Gmbh Robert | Fuel injection system |
DE10058130A1 (en) * | 2000-11-22 | 2002-05-23 | Bosch Gmbh Robert | Fuel injection system for internal combustion engine has high pressure collection chamber in which fuel is held under high pressure and at least one fuel injection valve connected to the collection chamber |
JP2005146882A (en) * | 2003-11-11 | 2005-06-09 | Toyota Motor Corp | Fuel injection device for internal combustion engine |
US7552717B2 (en) * | 2007-08-07 | 2009-06-30 | Delphi Technologies, Inc. | Fuel injector and method for controlling fuel injectors |
JP5079643B2 (en) * | 2007-11-02 | 2012-11-21 | 株式会社デンソー | Fuel injection valve and fuel injection device |
JP5079650B2 (en) * | 2007-11-02 | 2012-11-21 | 株式会社デンソー | Fuel injection valve and fuel injection device |
JP5064341B2 (en) * | 2007-11-02 | 2012-10-31 | 株式会社デンソー | Fuel injection valve and fuel injection device |
DE102009047611A1 (en) * | 2009-12-08 | 2011-06-09 | Robert Bosch Gmbh | Fuel injection device with needle position determination |
DE102010064115A1 (en) | 2010-12-23 | 2012-06-28 | Robert Bosch Gmbh | Injector arrangement, which preferably serves for natural gas |
-
2013
- 2013-07-31 DE DE201310214960 patent/DE102013214960A1/en not_active Withdrawn
-
2014
- 2014-06-13 EP EP14731216.9A patent/EP3027878A1/en not_active Withdrawn
- 2014-06-13 CN CN201480043493.5A patent/CN105431625A/en active Pending
- 2014-06-13 WO PCT/EP2014/062386 patent/WO2015014529A1/en active Application Filing
- 2014-06-13 BR BR112016001797A patent/BR112016001797A2/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008004866A1 (en) * | 2006-07-03 | 2008-01-10 | Vialle Alternative Fuel Systems B.V. | Injector assembly |
US20080135020A1 (en) * | 2006-11-29 | 2008-06-12 | Hornby Michael J | Automotive modular LPG injector |
US7415968B1 (en) * | 2007-04-24 | 2008-08-26 | Lycoming Engines, A Division Of Avco Corporation | Modular fuel delivery assembly for an aircraft engine |
WO2014076367A1 (en) * | 2012-11-13 | 2014-05-22 | Wärtsilä Finland Oy | Gas feed system for reciprocating engine and installation method |
Non-Patent Citations (1)
Title |
---|
See also references of EP3027878A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105431625A (en) | 2016-03-23 |
DE102013214960A1 (en) | 2015-02-05 |
EP3027878A1 (en) | 2016-06-08 |
BR112016001797A2 (en) | 2017-08-01 |
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