WO2014128342A1 - Fuel feeding arrangement - Google Patents

Fuel feeding arrangement Download PDF

Info

Publication number
WO2014128342A1
WO2014128342A1 PCT/FI2013/051129 FI2013051129W WO2014128342A1 WO 2014128342 A1 WO2014128342 A1 WO 2014128342A1 FI 2013051129 W FI2013051129 W FI 2013051129W WO 2014128342 A1 WO2014128342 A1 WO 2014128342A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
cylinder
valve
valve seat
intake
Prior art date
Application number
PCT/FI2013/051129
Other languages
French (fr)
Inventor
Jari HYVÖNEN
Original Assignee
Wärtsilä Finland Oy
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Wärtsilä Finland Oy filed Critical Wärtsilä Finland Oy
Publication of WO2014128342A1 publication Critical patent/WO2014128342A1/en

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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/04—Fuel-injectors combined or associated with other devices the devices being combustion-air intake or exhaust valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/22—Valve-seats not provided for in preceding subgroups of this group; Fixing of valve-seats
    • 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
    • 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
    • F02M21/04—Gas-air mixing apparatus
    • F02M21/042—Mixer comprising a plurality of bores or flow passages
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/04—Injectors peculiar thereto
    • F02M69/042—Positioning of injectors with respect to engine, e.g. in the air intake conduit
    • F02M69/045—Positioning of injectors with respect to engine, e.g. in the air intake conduit for injecting into 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
    • 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
    • F02M21/0278—Port fuel injectors for single or multipoint injection into the air intake system
    • 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
    • F02M35/10006—Air intakes; Induction systems characterised by the position of elements of the air intake system in direction of the air intake flow, i.e. between ambient air inlet and supply to the combustion chamber
    • F02M35/10072—Intake runners
    • 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
    • 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 present invention relates to a fuel feeding arrangement for feeding gaseous fuel into a cylinder of a piston engine, as defined in the preamble of claim 1 .
  • the fuel In piston engines, which are operated on gaseous fuel, such as natural gas, the fuel is usually introduced into the intake duct.
  • a separate gas admission valve is needed for each cylinder of the engine for regulating the amount of the gaseous fuel that is supplied into the intake duct.
  • the gas admission valve is often located at a relatively long distance from the intake valves of the cylinders, which can cause that fuel is trapped in the intake duct when the intake valves are closed. Also the mixing of the fuel and intake air can be insufficient when separate gas admission valves are used.
  • the object of the present invention is to provide an improved fuel feeding arrangement for introducing gaseous fuel into a cylinder of a piston engine.
  • the engine is provided with a cylinder head for each cylinder of the engine, and each cylinder head comprises an intake port, at least one intake valve for opening and closing fluid communication between the intake port and the cylinder, a valve seat cooperating with the valve head of the intake valve, and a fuel feeding duct.
  • the characterizing features of the arrangement according to the invention are given in the characterizing part of claim 1 .
  • the valve seat is provided with at least one fuel outlet for introducing gaseous fuel into the cylinder, the fuel outlet being in fluid communication with the fuel feeding duct of the cylinder head.
  • the fuel outlet is arranged on the inner perimeter of the valve seat.
  • the intake valves can be used for initiating and terminating fuel feeding into the cylinder, and no separate gas admission valve is needed.
  • the fuel outlet is arranged in an area, which is covered by the valve head of the intake valve when the intake valve is closed. The intake valve thus blocks the fuel outlets when being closed, and fuel flow into the intake port is prevented.
  • the fuel feeding starts simultaneously with the intake valve opening, and the valve opening duration is thus utilized maximally. This is beneficial especially when short intake valve opening duration is used. Also, no gas is trapped in the intake port.
  • the valve seat is provided with a plurality of fuel outlets.
  • the fuel outlets are distributed evenly around the valve seat. With a plurality of fuel outlets, a uniform gas flow into the cylinder can be achieved. Mixing of the fuel and the intake air is more effective than in engines with separate gas admission valves.
  • the fuel outlets are inclined towards the cylinder.
  • the fuel outlets are inclined towards the tangent of the valve seat. By inclining the fuel outlets towards the cylinder, the flow can be enhanced. Inclination towards the tangent creates swirl, which enhances mixing.
  • the valve seat is a separate insert.
  • the valve seat insert can comprise an annular channel, which is arranged inside the valve seat insert and to which the fuel outlets and the fuel feeding duct are connected.
  • the fuel outlets can be connected to the fuel feeding duct also by an annular channel, which is arranged between the valve seat insert and the cylinder head.
  • Fig. 1 shows a cross-sectional view of a cylinder head of a piston engine ac- cording to an embodiment of the invention
  • Fig. 2 shows a cross-sectional view of a cylinder head according to another embodiment of the invention.
  • FIG 1 is shown as a simplified illustration a cross-sectional view of part of a cylinder head 1 of a piston engine.
  • the engine is a large internal combustion engine, such as a main or an auxiliary engine of a ship or an engine that is used at a power plant for producing electricity.
  • the engine is operated on gaseous fuel, such as natural gas.
  • the engine can comprise spark plugs for ignit- ing the gaseous fuel, or liquid fuel can be used as pilot fuel, which ignites the gaseous fuel.
  • the engine comprises a plurality of cylinders 2. Each cylinder 2 of the engine is provided with an own cylinder head 2.
  • the cylinder head 1 comprises an intake port 3, through which intake air is introduced into the cylinder 2, and an exhaust port 10 for conducting exhaust gases out of the cylin- der 2.
  • the cylinder head 1 also comprises at least one intake valve 4, which is used for opening and closing fluid communication between the intake port 3 and the cylinder 2, and at least one exhaust valve 1 1 for opening and closing fluid communication between the exhaust port 10 and the cylinder 2.
  • the intake valve 4 comprises a valve stem 4a and a valve head 4b.
  • the cylinder head 1 is further provided with a valve seat 5.
  • the valve seat 5 is a separate part that is attached to the cylinder head 1 .
  • the valve seat 5 is arranged in the lower part of the cylinder head 1 and cooperates with the valve head 4b of the intake valve 4.
  • the inner perimeter of the valve seat 5 is provided with a chamfered section 5a.
  • the valve head 4b of the intake valve 4 is provided with a similar surface 4c.
  • the cylinder head 1 also comprises a fuel feeding duct 9, through which gaseous fuel can be fed into the cylinder 2.
  • the valve seat 5 is provided with fuel outlets 6, which are in fluid communication with the fuel feeding duct 9 of the cylinder head 1 .
  • the valve seat 5 comprises a plurality of fuel outlets 6. The fuel outlets 6 are distributed evenly around the valve seat 5.
  • the valve seat 5 also comprises an annular channel 8, to which the fuel outlets 6 are connected.
  • a fuel inlet 7 connects the annular channel 8 to the fuel feeding duct 9 of the cylinder head 1 .
  • the fuel outlets 6 are inclined towards the cylinder 2. The fuel flow is thus pointed towards the combustion chamber.
  • the fuel outlets 6 are also inclined towards the tangent of the valve seat 5. By the inclination towards the tangent, a swirling movement is induced, which facilitates mixing of the fuel and the intake air.
  • the fuel outlets 6 are arranged on the inner perimeter of the valve seat 5. The fluid communication between the fuel outlets 6 and the cylinder 2 is thus closed when the intake valve 4 is closed.
  • the fuel outlets 6 are in the area that is covered by the valve head 4b of the intake valve 4 when the intake valve 4 is closed, i.e. in the chamfered section 5a of the valve seat 5. The fuel is thus prevented from flowing into the intake port 3 when the intake valve 4 is closed.
  • the intake valve 4 thus regulates the supply of the gaseous fuel and no separate gas admission valve is needed.
  • the embodiment of figure 2 differs from the embodiment of figure 1 in that the annular channel 8, through which the fuel is supplied to the fuel outlets 6 of the valve seat 5, is not arranged inside the valve seat insert 5. Instead, the annular channel 8 is between the cylinder head 1 and the valve seat insert 5.
  • the cylinder head 1 is provided with a groove, which forms the annular channel 8, but the groove could also be arranged on the outer perimeter or on the upper surface of the valve seat insert 5.
  • the annular channel 8 could also be located above the valve seat insert 5.
  • the annular channel 8 is connected directly to the fuel feeding duct 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The fuel feeding arrangement for introducing gaseous fuel into a cylinder (2) of a piston engine is used in engines that are provided with a cylinder head (1) for each cylinder (2) of the engine, and each cylinder head (1) comprises an intake port (3), at least one intake valve (4) for opening and closing fluid communication between the intake port (3) and the cylinder (2), a valve seat (5) cooperating with the valve head (4b) of the intake valve (4), and a fuel feeding duct (9). The valve seat (5) is provided with at least one fuel outlet (6) for introducing gaseous fuel into the cylinder (2), and the fuel outlet (6) is in fluid communication with the fuel feeding duct (9) of the cylinder head (1).

Description

Fuel feeding arrangement
Technical field of the invention
The present invention relates to a fuel feeding arrangement for feeding gaseous fuel into a cylinder of a piston engine, as defined in the preamble of claim 1 .
Background of the invention
In piston engines, which are operated on gaseous fuel, such as natural gas, the fuel is usually introduced into the intake duct. A separate gas admission valve is needed for each cylinder of the engine for regulating the amount of the gaseous fuel that is supplied into the intake duct. For practical reasons, the gas admission valve is often located at a relatively long distance from the intake valves of the cylinders, which can cause that fuel is trapped in the intake duct when the intake valves are closed. Also the mixing of the fuel and intake air can be insufficient when separate gas admission valves are used.
Summary of the invention
The object of the present invention is to provide an improved fuel feeding arrangement for introducing gaseous fuel into a cylinder of a piston engine. The engine is provided with a cylinder head for each cylinder of the engine, and each cylinder head comprises an intake port, at least one intake valve for opening and closing fluid communication between the intake port and the cylinder, a valve seat cooperating with the valve head of the intake valve, and a fuel feeding duct. The characterizing features of the arrangement according to the invention are given in the characterizing part of claim 1 .
According to the invention, the valve seat is provided with at least one fuel outlet for introducing gaseous fuel into the cylinder, the fuel outlet being in fluid communication with the fuel feeding duct of the cylinder head.
When gaseous fuel is introduced into the cylinders of the engine via fuel out- lets that are arranged in valve seats, the fuel can be introduced close to the intake valves. The high flow velocity of the intake air through the gap between the valve seat and the intake valve lowers the static pressure in the gap, and lower pressure is needed for the gas supply.
According to an embodiment of the invention, the fuel outlet is arranged on the inner perimeter of the valve seat. When the fuel outlets are on the inner perim- eter of the valve seat, the intake valves can be used for initiating and terminating fuel feeding into the cylinder, and no separate gas admission valve is needed. According to another embodiment of the invention, the fuel outlet is arranged in an area, which is covered by the valve head of the intake valve when the intake valve is closed. The intake valve thus blocks the fuel outlets when being closed, and fuel flow into the intake port is prevented. The fuel feeding starts simultaneously with the intake valve opening, and the valve opening duration is thus utilized maximally. This is beneficial especially when short intake valve opening duration is used. Also, no gas is trapped in the intake port. According to an embodiment of the invention, the valve seat is provided with a plurality of fuel outlets. Preferably, the fuel outlets are distributed evenly around the valve seat. With a plurality of fuel outlets, a uniform gas flow into the cylinder can be achieved. Mixing of the fuel and the intake air is more effective than in engines with separate gas admission valves. According to another embodiment of the invention, the fuel outlets are inclined towards the cylinder. According to another embodiment of the invention, the fuel outlets are inclined towards the tangent of the valve seat. By inclining the fuel outlets towards the cylinder, the flow can be enhanced. Inclination towards the tangent creates swirl, which enhances mixing. According to an embodiment of the invention, the valve seat is a separate insert. The valve seat insert can comprise an annular channel, which is arranged inside the valve seat insert and to which the fuel outlets and the fuel feeding duct are connected. The fuel outlets can be connected to the fuel feeding duct also by an annular channel, which is arranged between the valve seat insert and the cylinder head. Brief description of the drawings
Embodiments of the invention are described below in more detail with reference to the accompanying drawings, in which
Fig. 1 shows a cross-sectional view of a cylinder head of a piston engine ac- cording to an embodiment of the invention, and
Fig. 2 shows a cross-sectional view of a cylinder head according to another embodiment of the invention.
Description of embodiments of the invention In figure 1 is shown as a simplified illustration a cross-sectional view of part of a cylinder head 1 of a piston engine. The engine is a large internal combustion engine, such as a main or an auxiliary engine of a ship or an engine that is used at a power plant for producing electricity. The engine is operated on gaseous fuel, such as natural gas. The engine can comprise spark plugs for ignit- ing the gaseous fuel, or liquid fuel can be used as pilot fuel, which ignites the gaseous fuel. The engine comprises a plurality of cylinders 2. Each cylinder 2 of the engine is provided with an own cylinder head 2. The cylinder head 1 comprises an intake port 3, through which intake air is introduced into the cylinder 2, and an exhaust port 10 for conducting exhaust gases out of the cylin- der 2. The cylinder head 1 also comprises at least one intake valve 4, which is used for opening and closing fluid communication between the intake port 3 and the cylinder 2, and at least one exhaust valve 1 1 for opening and closing fluid communication between the exhaust port 10 and the cylinder 2. The intake valve 4 comprises a valve stem 4a and a valve head 4b. The cylinder head 1 is further provided with a valve seat 5. In the embodiment of the figure 1 , the valve seat 5 is a separate part that is attached to the cylinder head 1 . The valve seat 5 is arranged in the lower part of the cylinder head 1 and cooperates with the valve head 4b of the intake valve 4. The inner perimeter of the valve seat 5 is provided with a chamfered section 5a. The valve head 4b of the intake valve 4 is provided with a similar surface 4c. When the intake valve 4 is closed, the chamfered surface 4c of the intake valve 4 rests against the chamfered section 5a of the valve seat 5 and the intake valve 4 is tightly closed. The cylinder head 1 also comprises a fuel feeding duct 9, through which gaseous fuel can be fed into the cylinder 2. For feeding the fuel into the cylinder 2, the valve seat 5 is provided with fuel outlets 6, which are in fluid communication with the fuel feeding duct 9 of the cylinder head 1 . In the embodiment of figure 1 , the valve seat 5 comprises a plurality of fuel outlets 6. The fuel outlets 6 are distributed evenly around the valve seat 5. The valve seat 5 also comprises an annular channel 8, to which the fuel outlets 6 are connected. A fuel inlet 7 connects the annular channel 8 to the fuel feeding duct 9 of the cylinder head 1 . In the embodiment of figure 1 , the fuel outlets 6 are inclined towards the cylinder 2. The fuel flow is thus pointed towards the combustion chamber. The fuel outlets 6 are also inclined towards the tangent of the valve seat 5. By the inclination towards the tangent, a swirling movement is induced, which facilitates mixing of the fuel and the intake air. The fuel outlets 6 are arranged on the inner perimeter of the valve seat 5. The fluid communication between the fuel outlets 6 and the cylinder 2 is thus closed when the intake valve 4 is closed. In the embodiment of figure 1 , the fuel outlets 6 are in the area that is covered by the valve head 4b of the intake valve 4 when the intake valve 4 is closed, i.e. in the chamfered section 5a of the valve seat 5. The fuel is thus prevented from flowing into the intake port 3 when the intake valve 4 is closed. The intake valve 4 thus regulates the supply of the gaseous fuel and no separate gas admission valve is needed.
The embodiment of figure 2 differs from the embodiment of figure 1 in that the annular channel 8, through which the fuel is supplied to the fuel outlets 6 of the valve seat 5, is not arranged inside the valve seat insert 5. Instead, the annular channel 8 is between the cylinder head 1 and the valve seat insert 5. In the embodiment of figure 2, the cylinder head 1 is provided with a groove, which forms the annular channel 8, but the groove could also be arranged on the outer perimeter or on the upper surface of the valve seat insert 5. The annular channel 8 could also be located above the valve seat insert 5. In the embodi- ment of figure 2, the annular channel 8 is connected directly to the fuel feeding duct 9.
It will be appreciated by a person skilled in the art that the invention is not limited to the embodiments described above, but may vary within the scope of the appended claims.

Claims

Claims
1 . A fuel feeding arrangement for introducing gaseous fuel into a cylinder (2) of a piston engine, which engine is provided with a cylinder head (1 ) for each cylinder (2) of the engine, and each cylinder head (1 ) comprises
- an intake port (3),
- at least one intake valve (4) for opening and closing fluid communication between the intake port (3) and the cylinder (2),
- a valve seat (5) cooperating with the valve head (4b) of the intake valve (4), and
- a fuel feeding duct (9),
characterized in that the valve seat (5) is provided with a plurality of fuel outlets (6) for introducing gaseous fuel into the cylinder (2), the fuel outlets (6) being in fluid communication with the fuel feeding duct (9) of the cylinder head
(1 )-
2. An arrangement according to claim 1 , characterized in that the fuel outlets (6) are arranged on the inner perimeter of the valve seat (5).
3. An arrangement according to claim 2, characterized in that the fuel outlets (6) are arranged in the area, which is covered by the valve head (4b) of the intake valve (4) when the intake valve (4) is closed.
4. An arrangement according to any of the preceding claims, characterized in that the fuel outlets (6) are distributed evenly around the valve seat (5).
5. An arrangement according to any of the preceding claims, characterized in that the fuel outlets (6) are inclined towards the cylinder (2).
6. An arrangement according to any of the preceding claims, characterized in that the fuel outlets (6) are inclined towards the tangent of the valve seat (5).
7. An arrangement according to any of the preceding claims, characterized in that the valve seat (5) is a separate insert.
8. An arrangement according to claim 7, characterized in that the valve seat insert (5) comprises an annular channel (8), which is arranged inside the valve seat insert (5) and to which the fuel outlets (6) and the fuel feeding duct (9) are connected.
9. An arrangement according to claim 7, characterized in that an annular channel (8) is arranged between the cylinder head (1 ) and the valve seat insert (5) for establishing fluid communication between the fuel feeding duct (9) and the fuel outlets (6).
PCT/FI2013/051129 2013-02-22 2013-12-03 Fuel feeding arrangement WO2014128342A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20135158 2013-02-22
FI20135158 2013-02-22

Publications (1)

Publication Number Publication Date
WO2014128342A1 true WO2014128342A1 (en) 2014-08-28

Family

ID=49816939

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FI2013/051129 WO2014128342A1 (en) 2013-02-22 2013-12-03 Fuel feeding arrangement

Country Status (1)

Country Link
WO (1) WO2014128342A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20200149497A1 (en) * 2018-11-08 2020-05-14 Ford Global Technologies, Llc System and method for valve seat injection
US10989146B2 (en) * 2018-11-05 2021-04-27 Caterpillar Inc. Oil injection methods for combustion enhancement in natural gas reciprocating engines

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799397A (en) * 1927-04-25 1931-04-07 Taylor Cecil Hamelin Internal-combustion engine
JP2005273600A (en) * 2004-03-26 2005-10-06 Nissan Diesel Motor Co Ltd Fuel injection device
JP2008232062A (en) * 2007-03-22 2008-10-02 Ihi Corp Fuel injection method and device for internal combustion engine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1799397A (en) * 1927-04-25 1931-04-07 Taylor Cecil Hamelin Internal-combustion engine
JP2005273600A (en) * 2004-03-26 2005-10-06 Nissan Diesel Motor Co Ltd Fuel injection device
JP2008232062A (en) * 2007-03-22 2008-10-02 Ihi Corp Fuel injection method and device for internal combustion engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10989146B2 (en) * 2018-11-05 2021-04-27 Caterpillar Inc. Oil injection methods for combustion enhancement in natural gas reciprocating engines
US20200149497A1 (en) * 2018-11-08 2020-05-14 Ford Global Technologies, Llc System and method for valve seat injection
US10808650B2 (en) * 2018-11-08 2020-10-20 Ford Global Technologies, Llc System and method for valve seat injection

Similar Documents

Publication Publication Date Title
US10072560B2 (en) Precombustion-chamber fuel supply device for gas internal combustion engine
KR101385248B1 (en) Two cycle internal combustion engine and method for the engine
CN204572180U (en) Precombustion chamber body
CN105781799B (en) The gas supply and igniter of gas engine
CN105525981B (en) Pre-combustion chamber assembly for internal combustion engine
JP2017510745A5 (en)
US4503817A (en) Annular valve stratified charge spark ignition engines
EP3118433B1 (en) Pre-combustion chamber assembly for internal combustion engines
US9702327B2 (en) System and method for introducing gas into engine cylinder
CN107002549A (en) Uniflow scavenging formula two-cycle engine
CN108035818A (en) The cylinder head of pre-chamber spark plug
US3980060A (en) Internal combustion engine
RU170790U1 (en) Fuel injector for main combustion chamber
WO2014128342A1 (en) Fuel feeding arrangement
GB1231474A (en)
CN105756832B (en) Combined mechanical oil spout electromagnetism jet hybrid fuel jet device
CN112867858B (en) Cylinder head for an internal combustion engine and method for supplying prechamber gas in a cylinder head
CN106523165B (en) Mechanically and electrically magnetic mixing controls dual fuel injection device to integrated form
CN115288886B (en) Two electromagnetic control formula ammonia fuel injector of collection micro-jetting in an organic whole
KR102629283B1 (en) Multi-engine plant
BR0311989A (en) Fuel injection system for an internal combustion engine
CN103993945B (en) The dual path SAIR of exhaust manifold is integrated for biplane
WO2015199868A1 (en) Integrated gas nozzle check valve and engine using same
US6666186B2 (en) Spark ignited internal combustion engine with at least one cylinder
EP3431745A1 (en) Spark plug for an internal combustion engine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13810974

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13810974

Country of ref document: EP

Kind code of ref document: A1